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ckpts/universal/global_step40/zero/8.mlp.dense_h_to_4h_swiglu.weight/exp_avg_sq.pt

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venv/lib/python3.10/site-packages/aiohttp/.hash/_websocket.pyx.hash

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venv/lib/python3.10/site-packages/aiohttp/.hash/hdrs.py.hash

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venv/lib/python3.10/site-packages/aiohttp/__init__.py

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+__version__ = "3.9.5"
+
+from typing import TYPE_CHECKING, Tuple
+
+from . import hdrs as hdrs
+from .client import (
+    BaseConnector as BaseConnector,
+    ClientConnectionError as ClientConnectionError,
+    ClientConnectorCertificateError as ClientConnectorCertificateError,
+    ClientConnectorError as ClientConnectorError,
+    ClientConnectorSSLError as ClientConnectorSSLError,
+    ClientError as ClientError,
+    ClientHttpProxyError as ClientHttpProxyError,
+    ClientOSError as ClientOSError,
+    ClientPayloadError as ClientPayloadError,
+    ClientProxyConnectionError as ClientProxyConnectionError,
+    ClientRequest as ClientRequest,
+    ClientResponse as ClientResponse,
+    ClientResponseError as ClientResponseError,
+    ClientSession as ClientSession,
+    ClientSSLError as ClientSSLError,
+    ClientTimeout as ClientTimeout,
+    ClientWebSocketResponse as ClientWebSocketResponse,
+    ContentTypeError as ContentTypeError,
+    Fingerprint as Fingerprint,
+    InvalidURL as InvalidURL,
+    NamedPipeConnector as NamedPipeConnector,
+    RequestInfo as RequestInfo,
+    ServerConnectionError as ServerConnectionError,
+    ServerDisconnectedError as ServerDisconnectedError,
+    ServerFingerprintMismatch as ServerFingerprintMismatch,
+    ServerTimeoutError as ServerTimeoutError,
+    TCPConnector as TCPConnector,
+    TooManyRedirects as TooManyRedirects,
+    UnixConnector as UnixConnector,
+    WSServerHandshakeError as WSServerHandshakeError,
+    request as request,
+)
+from .cookiejar import CookieJar as CookieJar, DummyCookieJar as DummyCookieJar
+from .formdata import FormData as FormData
+from .helpers import BasicAuth, ChainMapProxy, ETag
+from .http import (
+    HttpVersion as HttpVersion,
+    HttpVersion10 as HttpVersion10,
+    HttpVersion11 as HttpVersion11,
+    WebSocketError as WebSocketError,
+    WSCloseCode as WSCloseCode,
+    WSMessage as WSMessage,
+    WSMsgType as WSMsgType,
+)
+from .multipart import (
+    BadContentDispositionHeader as BadContentDispositionHeader,
+    BadContentDispositionParam as BadContentDispositionParam,
+    BodyPartReader as BodyPartReader,
+    MultipartReader as MultipartReader,
+    MultipartWriter as MultipartWriter,
+    content_disposition_filename as content_disposition_filename,
+    parse_content_disposition as parse_content_disposition,
+)
+from .payload import (
+    PAYLOAD_REGISTRY as PAYLOAD_REGISTRY,
+    AsyncIterablePayload as AsyncIterablePayload,
+    BufferedReaderPayload as BufferedReaderPayload,
+    BytesIOPayload as BytesIOPayload,
+    BytesPayload as BytesPayload,
+    IOBasePayload as IOBasePayload,
+    JsonPayload as JsonPayload,
+    Payload as Payload,
+    StringIOPayload as StringIOPayload,
+    StringPayload as StringPayload,
+    TextIOPayload as TextIOPayload,
+    get_payload as get_payload,
+    payload_type as payload_type,
+)
+from .payload_streamer import streamer as streamer
+from .resolver import (
+    AsyncResolver as AsyncResolver,
+    DefaultResolver as DefaultResolver,
+    ThreadedResolver as ThreadedResolver,
+)
+from .streams import (
+    EMPTY_PAYLOAD as EMPTY_PAYLOAD,
+    DataQueue as DataQueue,
+    EofStream as EofStream,
+    FlowControlDataQueue as FlowControlDataQueue,
+    StreamReader as StreamReader,
+)
+from .tracing import (
+    TraceConfig as TraceConfig,
+    TraceConnectionCreateEndParams as TraceConnectionCreateEndParams,
+    TraceConnectionCreateStartParams as TraceConnectionCreateStartParams,
+    TraceConnectionQueuedEndParams as TraceConnectionQueuedEndParams,
+    TraceConnectionQueuedStartParams as TraceConnectionQueuedStartParams,
+    TraceConnectionReuseconnParams as TraceConnectionReuseconnParams,
+    TraceDnsCacheHitParams as TraceDnsCacheHitParams,
+    TraceDnsCacheMissParams as TraceDnsCacheMissParams,
+    TraceDnsResolveHostEndParams as TraceDnsResolveHostEndParams,
+    TraceDnsResolveHostStartParams as TraceDnsResolveHostStartParams,
+    TraceRequestChunkSentParams as TraceRequestChunkSentParams,
+    TraceRequestEndParams as TraceRequestEndParams,
+    TraceRequestExceptionParams as TraceRequestExceptionParams,
+    TraceRequestRedirectParams as TraceRequestRedirectParams,
+    TraceRequestStartParams as TraceRequestStartParams,
+    TraceResponseChunkReceivedParams as TraceResponseChunkReceivedParams,
+)
+
+if TYPE_CHECKING:
+    # At runtime these are lazy-loaded at the bottom of the file.
+    from .worker import (
+        GunicornUVLoopWebWorker as GunicornUVLoopWebWorker,
+        GunicornWebWorker as GunicornWebWorker,
+    )
+
+__all__: Tuple[str, ...] = (
+    "hdrs",
+    # client
+    "BaseConnector",
+    "ClientConnectionError",
+    "ClientConnectorCertificateError",
+    "ClientConnectorError",
+    "ClientConnectorSSLError",
+    "ClientError",
+    "ClientHttpProxyError",
+    "ClientOSError",
+    "ClientPayloadError",
+    "ClientProxyConnectionError",
+    "ClientResponse",
+    "ClientRequest",
+    "ClientResponseError",
+    "ClientSSLError",
+    "ClientSession",
+    "ClientTimeout",
+    "ClientWebSocketResponse",
+    "ContentTypeError",
+    "Fingerprint",
+    "InvalidURL",
+    "RequestInfo",
+    "ServerConnectionError",
+    "ServerDisconnectedError",
+    "ServerFingerprintMismatch",
+    "ServerTimeoutError",
+    "TCPConnector",
+    "TooManyRedirects",
+    "UnixConnector",
+    "NamedPipeConnector",
+    "WSServerHandshakeError",
+    "request",
+    # cookiejar
+    "CookieJar",
+    "DummyCookieJar",
+    # formdata
+    "FormData",
+    # helpers
+    "BasicAuth",
+    "ChainMapProxy",
+    "ETag",
+    # http
+    "HttpVersion",
+    "HttpVersion10",
+    "HttpVersion11",
+    "WSMsgType",
+    "WSCloseCode",
+    "WSMessage",
+    "WebSocketError",
+    # multipart
+    "BadContentDispositionHeader",
+    "BadContentDispositionParam",
+    "BodyPartReader",
+    "MultipartReader",
+    "MultipartWriter",
+    "content_disposition_filename",
+    "parse_content_disposition",
+    # payload
+    "AsyncIterablePayload",
+    "BufferedReaderPayload",
+    "BytesIOPayload",
+    "BytesPayload",
+    "IOBasePayload",
+    "JsonPayload",
+    "PAYLOAD_REGISTRY",
+    "Payload",
+    "StringIOPayload",
+    "StringPayload",
+    "TextIOPayload",
+    "get_payload",
+    "payload_type",
+    # payload_streamer
+    "streamer",
+    # resolver
+    "AsyncResolver",
+    "DefaultResolver",
+    "ThreadedResolver",
+    # streams
+    "DataQueue",
+    "EMPTY_PAYLOAD",
+    "EofStream",
+    "FlowControlDataQueue",
+    "StreamReader",
+    # tracing
+    "TraceConfig",
+    "TraceConnectionCreateEndParams",
+    "TraceConnectionCreateStartParams",
+    "TraceConnectionQueuedEndParams",
+    "TraceConnectionQueuedStartParams",
+    "TraceConnectionReuseconnParams",
+    "TraceDnsCacheHitParams",
+    "TraceDnsCacheMissParams",
+    "TraceDnsResolveHostEndParams",
+    "TraceDnsResolveHostStartParams",
+    "TraceRequestChunkSentParams",
+    "TraceRequestEndParams",
+    "TraceRequestExceptionParams",
+    "TraceRequestRedirectParams",
+    "TraceRequestStartParams",
+    "TraceResponseChunkReceivedParams",
+    # workers (imported lazily with __getattr__)
+    "GunicornUVLoopWebWorker",
+    "GunicornWebWorker",
+)
+
+
+def __dir__() -> Tuple[str, ...]:
+    return __all__ + ("__author__", "__doc__")
+
+
+def __getattr__(name: str) -> object:
+    global GunicornUVLoopWebWorker, GunicornWebWorker
+
+    # Importing gunicorn takes a long time (>100ms), so only import if actually needed.
+    if name in ("GunicornUVLoopWebWorker", "GunicornWebWorker"):
+        try:
+            from .worker import GunicornUVLoopWebWorker as guv, GunicornWebWorker as gw
+        except ImportError:
+            return None
+
+        GunicornUVLoopWebWorker = guv  # type: ignore[misc]
+        GunicornWebWorker = gw  # type: ignore[misc]
+        return guv if name == "GunicornUVLoopWebWorker" else gw
+
+    raise AttributeError(f"module {__name__} has no attribute {name}")

venv/lib/python3.10/site-packages/aiohttp/_cparser.pxd

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+from libc.stdint cimport int32_t, uint8_t, uint16_t, uint64_t
+
+
+cdef extern from "../vendor/llhttp/build/llhttp.h":
+
+    struct llhttp__internal_s:
+        int32_t _index
+        void* _span_pos0
+        void* _span_cb0
+        int32_t error
+        const char* reason
+        const char* error_pos
+        void* data
+        void* _current
+        uint64_t content_length
+        uint8_t type
+        uint8_t method
+        uint8_t http_major
+        uint8_t http_minor
+        uint8_t header_state
+        uint8_t lenient_flags
+        uint8_t upgrade
+        uint8_t finish
+        uint16_t flags
+        uint16_t status_code
+        void* settings
+
+    ctypedef llhttp__internal_s llhttp__internal_t
+    ctypedef llhttp__internal_t llhttp_t
+
+    ctypedef int (*llhttp_data_cb)(llhttp_t*, const char *at, size_t length) except -1
+    ctypedef int (*llhttp_cb)(llhttp_t*) except -1
+
+    struct llhttp_settings_s:
+        llhttp_cb      on_message_begin
+        llhttp_data_cb on_url
+        llhttp_data_cb on_status
+        llhttp_data_cb on_header_field
+        llhttp_data_cb on_header_value
+        llhttp_cb      on_headers_complete
+        llhttp_data_cb on_body
+        llhttp_cb      on_message_complete
+        llhttp_cb      on_chunk_header
+        llhttp_cb      on_chunk_complete
+
+        llhttp_cb      on_url_complete
+        llhttp_cb      on_status_complete
+        llhttp_cb      on_header_field_complete
+        llhttp_cb      on_header_value_complete
+
+    ctypedef llhttp_settings_s llhttp_settings_t
+
+    enum llhttp_errno:
+        HPE_OK,
+        HPE_INTERNAL,
+        HPE_STRICT,
+        HPE_LF_EXPECTED,
+        HPE_UNEXPECTED_CONTENT_LENGTH,
+        HPE_CLOSED_CONNECTION,
+        HPE_INVALID_METHOD,
+        HPE_INVALID_URL,
+        HPE_INVALID_CONSTANT,
+        HPE_INVALID_VERSION,
+        HPE_INVALID_HEADER_TOKEN,
+        HPE_INVALID_CONTENT_LENGTH,
+        HPE_INVALID_CHUNK_SIZE,
+        HPE_INVALID_STATUS,
+        HPE_INVALID_EOF_STATE,
+        HPE_INVALID_TRANSFER_ENCODING,
+        HPE_CB_MESSAGE_BEGIN,
+        HPE_CB_HEADERS_COMPLETE,
+        HPE_CB_MESSAGE_COMPLETE,
+        HPE_CB_CHUNK_HEADER,
+        HPE_CB_CHUNK_COMPLETE,
+        HPE_PAUSED,
+        HPE_PAUSED_UPGRADE,
+        HPE_USER
+
+    ctypedef llhttp_errno llhttp_errno_t
+
+    enum llhttp_flags:
+        F_CHUNKED,
+        F_CONTENT_LENGTH
+
+    enum llhttp_type:
+        HTTP_REQUEST,
+        HTTP_RESPONSE,
+        HTTP_BOTH
+
+    enum llhttp_method:
+        HTTP_DELETE,
+        HTTP_GET,
+        HTTP_HEAD,
+        HTTP_POST,
+        HTTP_PUT,
+        HTTP_CONNECT,
+        HTTP_OPTIONS,
+        HTTP_TRACE,
+        HTTP_COPY,
+        HTTP_LOCK,
+        HTTP_MKCOL,
+        HTTP_MOVE,
+        HTTP_PROPFIND,
+        HTTP_PROPPATCH,
+        HTTP_SEARCH,
+        HTTP_UNLOCK,
+        HTTP_BIND,
+        HTTP_REBIND,
+        HTTP_UNBIND,
+        HTTP_ACL,
+        HTTP_REPORT,
+        HTTP_MKACTIVITY,
+        HTTP_CHECKOUT,
+        HTTP_MERGE,
+        HTTP_MSEARCH,
+        HTTP_NOTIFY,
+        HTTP_SUBSCRIBE,
+        HTTP_UNSUBSCRIBE,
+        HTTP_PATCH,
+        HTTP_PURGE,
+        HTTP_MKCALENDAR,
+        HTTP_LINK,
+        HTTP_UNLINK,
+        HTTP_SOURCE,
+        HTTP_PRI,
+        HTTP_DESCRIBE,
+        HTTP_ANNOUNCE,
+        HTTP_SETUP,
+        HTTP_PLAY,
+        HTTP_PAUSE,
+        HTTP_TEARDOWN,
+        HTTP_GET_PARAMETER,
+        HTTP_SET_PARAMETER,
+        HTTP_REDIRECT,
+        HTTP_RECORD,
+        HTTP_FLUSH
+
+    ctypedef llhttp_method llhttp_method_t;
+
+    void llhttp_settings_init(llhttp_settings_t* settings)
+    void llhttp_init(llhttp_t* parser, llhttp_type type,
+                 const llhttp_settings_t* settings)
+
+    llhttp_errno_t llhttp_execute(llhttp_t* parser, const char* data, size_t len)
+
+    int llhttp_should_keep_alive(const llhttp_t* parser)
+
+    void llhttp_resume_after_upgrade(llhttp_t* parser)
+
+    llhttp_errno_t llhttp_get_errno(const llhttp_t* parser)
+    const char* llhttp_get_error_reason(const llhttp_t* parser)
+    const char* llhttp_get_error_pos(const llhttp_t* parser)
+
+    const char* llhttp_method_name(llhttp_method_t method)
+
+    void llhttp_set_lenient_headers(llhttp_t* parser, int enabled)
+    void llhttp_set_lenient_optional_cr_before_lf(llhttp_t* parser, int enabled)
+    void llhttp_set_lenient_spaces_after_chunk_size(llhttp_t* parser, int enabled)

venv/lib/python3.10/site-packages/aiohttp/_find_header.pxd

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+cdef extern from "_find_header.h":
+    int find_header(char *, int)

venv/lib/python3.10/site-packages/aiohttp/_headers.pxi

@@ -0,0 +1,83 @@
+# The file is autogenerated from aiohttp/hdrs.py
+# Run ./tools/gen.py to update it after the origin changing.
+
+from . import hdrs
+cdef tuple headers = (
+    hdrs.ACCEPT,
+    hdrs.ACCEPT_CHARSET,
+    hdrs.ACCEPT_ENCODING,
+    hdrs.ACCEPT_LANGUAGE,
+    hdrs.ACCEPT_RANGES,
+    hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+    hdrs.ACCESS_CONTROL_ALLOW_HEADERS,
+    hdrs.ACCESS_CONTROL_ALLOW_METHODS,
+    hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+    hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+    hdrs.ACCESS_CONTROL_MAX_AGE,
+    hdrs.ACCESS_CONTROL_REQUEST_HEADERS,
+    hdrs.ACCESS_CONTROL_REQUEST_METHOD,
+    hdrs.AGE,
+    hdrs.ALLOW,
+    hdrs.AUTHORIZATION,
+    hdrs.CACHE_CONTROL,
+    hdrs.CONNECTION,
+    hdrs.CONTENT_DISPOSITION,
+    hdrs.CONTENT_ENCODING,
+    hdrs.CONTENT_LANGUAGE,
+    hdrs.CONTENT_LENGTH,
+    hdrs.CONTENT_LOCATION,
+    hdrs.CONTENT_MD5,
+    hdrs.CONTENT_RANGE,
+    hdrs.CONTENT_TRANSFER_ENCODING,
+    hdrs.CONTENT_TYPE,
+    hdrs.COOKIE,
+    hdrs.DATE,
+    hdrs.DESTINATION,
+    hdrs.DIGEST,
+    hdrs.ETAG,
+    hdrs.EXPECT,
+    hdrs.EXPIRES,
+    hdrs.FORWARDED,
+    hdrs.FROM,
+    hdrs.HOST,
+    hdrs.IF_MATCH,
+    hdrs.IF_MODIFIED_SINCE,
+    hdrs.IF_NONE_MATCH,
+    hdrs.IF_RANGE,
+    hdrs.IF_UNMODIFIED_SINCE,
+    hdrs.KEEP_ALIVE,
+    hdrs.LAST_EVENT_ID,
+    hdrs.LAST_MODIFIED,
+    hdrs.LINK,
+    hdrs.LOCATION,
+    hdrs.MAX_FORWARDS,
+    hdrs.ORIGIN,
+    hdrs.PRAGMA,
+    hdrs.PROXY_AUTHENTICATE,
+    hdrs.PROXY_AUTHORIZATION,
+    hdrs.RANGE,
+    hdrs.REFERER,
+    hdrs.RETRY_AFTER,
+    hdrs.SEC_WEBSOCKET_ACCEPT,
+    hdrs.SEC_WEBSOCKET_EXTENSIONS,
+    hdrs.SEC_WEBSOCKET_KEY,
+    hdrs.SEC_WEBSOCKET_KEY1,
+    hdrs.SEC_WEBSOCKET_PROTOCOL,
+    hdrs.SEC_WEBSOCKET_VERSION,
+    hdrs.SERVER,
+    hdrs.SET_COOKIE,
+    hdrs.TE,
+    hdrs.TRAILER,
+    hdrs.TRANSFER_ENCODING,
+    hdrs.URI,
+    hdrs.UPGRADE,
+    hdrs.USER_AGENT,
+    hdrs.VARY,
+    hdrs.VIA,
+    hdrs.WWW_AUTHENTICATE,
+    hdrs.WANT_DIGEST,
+    hdrs.WARNING,
+    hdrs.X_FORWARDED_FOR,
+    hdrs.X_FORWARDED_HOST,
+    hdrs.X_FORWARDED_PROTO,
+)

venv/lib/python3.10/site-packages/aiohttp/_helpers.pyx

@@ -0,0 +1,35 @@
+cdef class reify:
+    """Use as a class method decorator.  It operates almost exactly like
+    the Python `@property` decorator, but it puts the result of the
+    method it decorates into the instance dict after the first call,
+    effectively replacing the function it decorates with an instance
+    variable.  It is, in Python parlance, a data descriptor.
+
+    """
+
+    cdef object wrapped
+    cdef object name
+
+    def __init__(self, wrapped):
+        self.wrapped = wrapped
+        self.name = wrapped.__name__
+
+    @property
+    def __doc__(self):
+        return self.wrapped.__doc__
+
+    def __get__(self, inst, owner):
+        try:
+            try:
+                return inst._cache[self.name]
+            except KeyError:
+                val = self.wrapped(inst)
+                inst._cache[self.name] = val
+                return val
+        except AttributeError:
+            if inst is None:
+                return self
+            raise
+
+    def __set__(self, inst, value):
+        raise AttributeError("reified property is read-only")

venv/lib/python3.10/site-packages/aiohttp/_http_parser.pyx

@@ -0,0 +1,838 @@
+#cython: language_level=3
+#
+# Based on https://github.com/MagicStack/httptools
+#
+
+from cpython cimport (
+    Py_buffer,
+    PyBUF_SIMPLE,
+    PyBuffer_Release,
+    PyBytes_AsString,
+    PyBytes_AsStringAndSize,
+    PyObject_GetBuffer,
+)
+from cpython.mem cimport PyMem_Free, PyMem_Malloc
+from libc.limits cimport ULLONG_MAX
+from libc.string cimport memcpy
+
+from multidict import CIMultiDict as _CIMultiDict, CIMultiDictProxy as _CIMultiDictProxy
+from yarl import URL as _URL
+
+from aiohttp import hdrs
+from aiohttp.helpers import DEBUG, set_exception
+
+from .http_exceptions import (
+    BadHttpMessage,
+    BadStatusLine,
+    ContentLengthError,
+    InvalidHeader,
+    InvalidURLError,
+    LineTooLong,
+    PayloadEncodingError,
+    TransferEncodingError,
+)
+from .http_parser import DeflateBuffer as _DeflateBuffer
+from .http_writer import (
+    HttpVersion as _HttpVersion,
+    HttpVersion10 as _HttpVersion10,
+    HttpVersion11 as _HttpVersion11,
+)
+from .streams import EMPTY_PAYLOAD as _EMPTY_PAYLOAD, StreamReader as _StreamReader
+
+cimport cython
+
+from aiohttp cimport _cparser as cparser
+
+include "_headers.pxi"
+
+from aiohttp cimport _find_header
+
+DEF DEFAULT_FREELIST_SIZE = 250
+
+cdef extern from "Python.h":
+    int PyByteArray_Resize(object, Py_ssize_t) except -1
+    Py_ssize_t PyByteArray_Size(object) except -1
+    char* PyByteArray_AsString(object)
+
+__all__ = ('HttpRequestParser', 'HttpResponseParser',
+           'RawRequestMessage', 'RawResponseMessage')
+
+cdef object URL = _URL
+cdef object URL_build = URL.build
+cdef object CIMultiDict = _CIMultiDict
+cdef object CIMultiDictProxy = _CIMultiDictProxy
+cdef object HttpVersion = _HttpVersion
+cdef object HttpVersion10 = _HttpVersion10
+cdef object HttpVersion11 = _HttpVersion11
+cdef object SEC_WEBSOCKET_KEY1 = hdrs.SEC_WEBSOCKET_KEY1
+cdef object CONTENT_ENCODING = hdrs.CONTENT_ENCODING
+cdef object EMPTY_PAYLOAD = _EMPTY_PAYLOAD
+cdef object StreamReader = _StreamReader
+cdef object DeflateBuffer = _DeflateBuffer
+
+
+cdef inline object extend(object buf, const char* at, size_t length):
+    cdef Py_ssize_t s
+    cdef char* ptr
+    s = PyByteArray_Size(buf)
+    PyByteArray_Resize(buf, s + length)
+    ptr = PyByteArray_AsString(buf)
+    memcpy(ptr + s, at, length)
+
+
+DEF METHODS_COUNT = 46;
+
+cdef list _http_method = []
+
+for i in range(METHODS_COUNT):
+    _http_method.append(
+        cparser.llhttp_method_name(<cparser.llhttp_method_t> i).decode('ascii'))
+
+
+cdef inline str http_method_str(int i):
+    if i < METHODS_COUNT:
+        return <str>_http_method[i]
+    else:
+        return "<unknown>"
+
+cdef inline object find_header(bytes raw_header):
+    cdef Py_ssize_t size
+    cdef char *buf
+    cdef int idx
+    PyBytes_AsStringAndSize(raw_header, &buf, &size)
+    idx = _find_header.find_header(buf, size)
+    if idx == -1:
+        return raw_header.decode('utf-8', 'surrogateescape')
+    return headers[idx]
+
+
+@cython.freelist(DEFAULT_FREELIST_SIZE)
+cdef class RawRequestMessage:
+    cdef readonly str method
+    cdef readonly str path
+    cdef readonly object version  # HttpVersion
+    cdef readonly object headers  # CIMultiDict
+    cdef readonly object raw_headers  # tuple
+    cdef readonly object should_close
+    cdef readonly object compression
+    cdef readonly object upgrade
+    cdef readonly object chunked
+    cdef readonly object url  # yarl.URL
+
+    def __init__(self, method, path, version, headers, raw_headers,
+                 should_close, compression, upgrade, chunked, url):
+        self.method = method
+        self.path = path
+        self.version = version
+        self.headers = headers
+        self.raw_headers = raw_headers
+        self.should_close = should_close
+        self.compression = compression
+        self.upgrade = upgrade
+        self.chunked = chunked
+        self.url = url
+
+    def __repr__(self):
+        info = []
+        info.append(("method", self.method))
+        info.append(("path", self.path))
+        info.append(("version", self.version))
+        info.append(("headers", self.headers))
+        info.append(("raw_headers", self.raw_headers))
+        info.append(("should_close", self.should_close))
+        info.append(("compression", self.compression))
+        info.append(("upgrade", self.upgrade))
+        info.append(("chunked", self.chunked))
+        info.append(("url", self.url))
+        sinfo = ', '.join(name + '=' + repr(val) for name, val in info)
+        return '<RawRequestMessage(' + sinfo + ')>'
+
+    def _replace(self, **dct):
+        cdef RawRequestMessage ret
+        ret = _new_request_message(self.method,
+                                   self.path,
+                                   self.version,
+                                   self.headers,
+                                   self.raw_headers,
+                                   self.should_close,
+                                   self.compression,
+                                   self.upgrade,
+                                   self.chunked,
+                                   self.url)
+        if "method" in dct:
+            ret.method = dct["method"]
+        if "path" in dct:
+            ret.path = dct["path"]
+        if "version" in dct:
+            ret.version = dct["version"]
+        if "headers" in dct:
+            ret.headers = dct["headers"]
+        if "raw_headers" in dct:
+            ret.raw_headers = dct["raw_headers"]
+        if "should_close" in dct:
+            ret.should_close = dct["should_close"]
+        if "compression" in dct:
+            ret.compression = dct["compression"]
+        if "upgrade" in dct:
+            ret.upgrade = dct["upgrade"]
+        if "chunked" in dct:
+            ret.chunked = dct["chunked"]
+        if "url" in dct:
+            ret.url = dct["url"]
+        return ret
+
+cdef _new_request_message(str method,
+                           str path,
+                           object version,
+                           object headers,
+                           object raw_headers,
+                           bint should_close,
+                           object compression,
+                           bint upgrade,
+                           bint chunked,
+                           object url):
+    cdef RawRequestMessage ret
+    ret = RawRequestMessage.__new__(RawRequestMessage)
+    ret.method = method
+    ret.path = path
+    ret.version = version
+    ret.headers = headers
+    ret.raw_headers = raw_headers
+    ret.should_close = should_close
+    ret.compression = compression
+    ret.upgrade = upgrade
+    ret.chunked = chunked
+    ret.url = url
+    return ret
+
+
+@cython.freelist(DEFAULT_FREELIST_SIZE)
+cdef class RawResponseMessage:
+    cdef readonly object version  # HttpVersion
+    cdef readonly int code
+    cdef readonly str reason
+    cdef readonly object headers  # CIMultiDict
+    cdef readonly object raw_headers  # tuple
+    cdef readonly object should_close
+    cdef readonly object compression
+    cdef readonly object upgrade
+    cdef readonly object chunked
+
+    def __init__(self, version, code, reason, headers, raw_headers,
+                 should_close, compression, upgrade, chunked):
+        self.version = version
+        self.code = code
+        self.reason = reason
+        self.headers = headers
+        self.raw_headers = raw_headers
+        self.should_close = should_close
+        self.compression = compression
+        self.upgrade = upgrade
+        self.chunked = chunked
+
+    def __repr__(self):
+        info = []
+        info.append(("version", self.version))
+        info.append(("code", self.code))
+        info.append(("reason", self.reason))
+        info.append(("headers", self.headers))
+        info.append(("raw_headers", self.raw_headers))
+        info.append(("should_close", self.should_close))
+        info.append(("compression", self.compression))
+        info.append(("upgrade", self.upgrade))
+        info.append(("chunked", self.chunked))
+        sinfo = ', '.join(name + '=' + repr(val) for name, val in info)
+        return '<RawResponseMessage(' + sinfo + ')>'
+
+
+cdef _new_response_message(object version,
+                           int code,
+                           str reason,
+                           object headers,
+                           object raw_headers,
+                           bint should_close,
+                           object compression,
+                           bint upgrade,
+                           bint chunked):
+    cdef RawResponseMessage ret
+    ret = RawResponseMessage.__new__(RawResponseMessage)
+    ret.version = version
+    ret.code = code
+    ret.reason = reason
+    ret.headers = headers
+    ret.raw_headers = raw_headers
+    ret.should_close = should_close
+    ret.compression = compression
+    ret.upgrade = upgrade
+    ret.chunked = chunked
+    return ret
+
+
+@cython.internal
+cdef class HttpParser:
+
+    cdef:
+        cparser.llhttp_t* _cparser
+        cparser.llhttp_settings_t* _csettings
+
+        bytearray _raw_name
+        bytearray _raw_value
+        bint      _has_value
+
+        object _protocol
+        object _loop
+        object _timer
+
+        size_t _max_line_size
+        size_t _max_field_size
+        size_t _max_headers
+        bint _response_with_body
+        bint _read_until_eof
+
+        bint    _started
+        object  _url
+        bytearray   _buf
+        str     _path
+        str     _reason
+        object  _headers
+        list    _raw_headers
+        bint    _upgraded
+        list    _messages
+        object  _payload
+        bint    _payload_error
+        object  _payload_exception
+        object  _last_error
+        bint    _auto_decompress
+        int     _limit
+
+        str     _content_encoding
+
+        Py_buffer py_buf
+
+    def __cinit__(self):
+        self._cparser = <cparser.llhttp_t*> \
+                                PyMem_Malloc(sizeof(cparser.llhttp_t))
+        if self._cparser is NULL:
+            raise MemoryError()
+
+        self._csettings = <cparser.llhttp_settings_t*> \
+                                PyMem_Malloc(sizeof(cparser.llhttp_settings_t))
+        if self._csettings is NULL:
+            raise MemoryError()
+
+    def __dealloc__(self):
+        PyMem_Free(self._cparser)
+        PyMem_Free(self._csettings)
+
+    cdef _init(
+        self, cparser.llhttp_type mode,
+        object protocol, object loop, int limit,
+        object timer=None,
+        size_t max_line_size=8190, size_t max_headers=32768,
+        size_t max_field_size=8190, payload_exception=None,
+        bint response_with_body=True, bint read_until_eof=False,
+        bint auto_decompress=True,
+    ):
+        cparser.llhttp_settings_init(self._csettings)
+        cparser.llhttp_init(self._cparser, mode, self._csettings)
+        self._cparser.data = <void*>self
+        self._cparser.content_length = 0
+
+        self._protocol = protocol
+        self._loop = loop
+        self._timer = timer
+
+        self._buf = bytearray()
+        self._payload = None
+        self._payload_error = 0
+        self._payload_exception = payload_exception
+        self._messages = []
+
+        self._raw_name = bytearray()
+        self._raw_value = bytearray()
+        self._has_value = False
+
+        self._max_line_size = max_line_size
+        self._max_headers = max_headers
+        self._max_field_size = max_field_size
+        self._response_with_body = response_with_body
+        self._read_until_eof = read_until_eof
+        self._upgraded = False
+        self._auto_decompress = auto_decompress
+        self._content_encoding = None
+
+        self._csettings.on_url = cb_on_url
+        self._csettings.on_status = cb_on_status
+        self._csettings.on_header_field = cb_on_header_field
+        self._csettings.on_header_value = cb_on_header_value
+        self._csettings.on_headers_complete = cb_on_headers_complete
+        self._csettings.on_body = cb_on_body
+        self._csettings.on_message_begin = cb_on_message_begin
+        self._csettings.on_message_complete = cb_on_message_complete
+        self._csettings.on_chunk_header = cb_on_chunk_header
+        self._csettings.on_chunk_complete = cb_on_chunk_complete
+
+        self._last_error = None
+        self._limit = limit
+
+    cdef _process_header(self):
+        if self._raw_name:
+            raw_name = bytes(self._raw_name)
+            raw_value = bytes(self._raw_value)
+
+            name = find_header(raw_name)
+            value = raw_value.decode('utf-8', 'surrogateescape')
+
+            self._headers.add(name, value)
+
+            if name is CONTENT_ENCODING:
+                self._content_encoding = value
+
+            PyByteArray_Resize(self._raw_name, 0)
+            PyByteArray_Resize(self._raw_value, 0)
+            self._has_value = False
+            self._raw_headers.append((raw_name, raw_value))
+
+    cdef _on_header_field(self, char* at, size_t length):
+        cdef Py_ssize_t size
+        cdef char *buf
+        if self._has_value:
+            self._process_header()
+
+        size = PyByteArray_Size(self._raw_name)
+        PyByteArray_Resize(self._raw_name, size + length)
+        buf = PyByteArray_AsString(self._raw_name)
+        memcpy(buf + size, at, length)
+
+    cdef _on_header_value(self, char* at, size_t length):
+        cdef Py_ssize_t size
+        cdef char *buf
+
+        size = PyByteArray_Size(self._raw_value)
+        PyByteArray_Resize(self._raw_value, size + length)
+        buf = PyByteArray_AsString(self._raw_value)
+        memcpy(buf + size, at, length)
+        self._has_value = True
+
+    cdef _on_headers_complete(self):
+        self._process_header()
+
+        method = http_method_str(self._cparser.method)
+        should_close = not cparser.llhttp_should_keep_alive(self._cparser)
+        upgrade = self._cparser.upgrade
+        chunked = self._cparser.flags & cparser.F_CHUNKED
+
+        raw_headers = tuple(self._raw_headers)
+        headers = CIMultiDictProxy(self._headers)
+
+        if upgrade or self._cparser.method == cparser.HTTP_CONNECT:
+            self._upgraded = True
+
+        # do not support old websocket spec
+        if SEC_WEBSOCKET_KEY1 in headers:
+            raise InvalidHeader(SEC_WEBSOCKET_KEY1)
+
+        encoding = None
+        enc = self._content_encoding
+        if enc is not None:
+            self._content_encoding = None
+            enc = enc.lower()
+            if enc in ('gzip', 'deflate', 'br'):
+                encoding = enc
+
+        if self._cparser.type == cparser.HTTP_REQUEST:
+            msg = _new_request_message(
+                method, self._path,
+                self.http_version(), headers, raw_headers,
+                should_close, encoding, upgrade, chunked, self._url)
+        else:
+            msg = _new_response_message(
+                self.http_version(), self._cparser.status_code, self._reason,
+                headers, raw_headers, should_close, encoding,
+                upgrade, chunked)
+
+        if (
+            ULLONG_MAX > self._cparser.content_length > 0 or chunked or
+            self._cparser.method == cparser.HTTP_CONNECT or
+            (self._cparser.status_code >= 199 and
+             self._cparser.content_length == 0 and
+             self._read_until_eof)
+        ):
+            payload = StreamReader(
+                self._protocol, timer=self._timer, loop=self._loop,
+                limit=self._limit)
+        else:
+            payload = EMPTY_PAYLOAD
+
+        self._payload = payload
+        if encoding is not None and self._auto_decompress:
+            self._payload = DeflateBuffer(payload, encoding)
+
+        if not self._response_with_body:
+            payload = EMPTY_PAYLOAD
+
+        self._messages.append((msg, payload))
+
+    cdef _on_message_complete(self):
+        self._payload.feed_eof()
+        self._payload = None
+
+    cdef _on_chunk_header(self):
+        self._payload.begin_http_chunk_receiving()
+
+    cdef _on_chunk_complete(self):
+        self._payload.end_http_chunk_receiving()
+
+    cdef object _on_status_complete(self):
+        pass
+
+    cdef inline http_version(self):
+        cdef cparser.llhttp_t* parser = self._cparser
+
+        if parser.http_major == 1:
+            if parser.http_minor == 0:
+                return HttpVersion10
+            elif parser.http_minor == 1:
+                return HttpVersion11
+
+        return HttpVersion(parser.http_major, parser.http_minor)
+
+    ### Public API ###
+
+    def feed_eof(self):
+        cdef bytes desc
+
+        if self._payload is not None:
+            if self._cparser.flags & cparser.F_CHUNKED:
+                raise TransferEncodingError(
+                    "Not enough data for satisfy transfer length header.")
+            elif self._cparser.flags & cparser.F_CONTENT_LENGTH:
+                raise ContentLengthError(
+                    "Not enough data for satisfy content length header.")
+            elif cparser.llhttp_get_errno(self._cparser) != cparser.HPE_OK:
+                desc = cparser.llhttp_get_error_reason(self._cparser)
+                raise PayloadEncodingError(desc.decode('latin-1'))
+            else:
+                self._payload.feed_eof()
+        elif self._started:
+            self._on_headers_complete()
+            if self._messages:
+                return self._messages[-1][0]
+
+    def feed_data(self, data):
+        cdef:
+            size_t data_len
+            size_t nb
+            cdef cparser.llhttp_errno_t errno
+
+        PyObject_GetBuffer(data, &self.py_buf, PyBUF_SIMPLE)
+        data_len = <size_t>self.py_buf.len
+
+        errno = cparser.llhttp_execute(
+            self._cparser,
+            <char*>self.py_buf.buf,
+            data_len)
+
+        if errno is cparser.HPE_PAUSED_UPGRADE:
+            cparser.llhttp_resume_after_upgrade(self._cparser)
+
+            nb = cparser.llhttp_get_error_pos(self._cparser) - <char*>self.py_buf.buf
+
+        PyBuffer_Release(&self.py_buf)
+
+        if errno not in (cparser.HPE_OK, cparser.HPE_PAUSED_UPGRADE):
+            if self._payload_error == 0:
+                if self._last_error is not None:
+                    ex = self._last_error
+                    self._last_error = None
+                else:
+                    after = cparser.llhttp_get_error_pos(self._cparser)
+                    before = data[:after - <char*>self.py_buf.buf]
+                    after_b = after.split(b"\r\n", 1)[0]
+                    before = before.rsplit(b"\r\n", 1)[-1]
+                    data = before + after_b
+                    pointer = " " * (len(repr(before))-1) + "^"
+                    ex = parser_error_from_errno(self._cparser, data, pointer)
+                self._payload = None
+                raise ex
+
+        if self._messages:
+            messages = self._messages
+            self._messages = []
+        else:
+            messages = ()
+
+        if self._upgraded:
+            return messages, True, data[nb:]
+        else:
+            return messages, False, b''
+
+    def set_upgraded(self, val):
+        self._upgraded = val
+
+
+cdef class HttpRequestParser(HttpParser):
+
+    def __init__(
+        self, protocol, loop, int limit, timer=None,
+        size_t max_line_size=8190, size_t max_headers=32768,
+        size_t max_field_size=8190, payload_exception=None,
+        bint response_with_body=True, bint read_until_eof=False,
+        bint auto_decompress=True,
+    ):
+        self._init(cparser.HTTP_REQUEST, protocol, loop, limit, timer,
+                   max_line_size, max_headers, max_field_size,
+                   payload_exception, response_with_body, read_until_eof,
+                   auto_decompress)
+
+    cdef object _on_status_complete(self):
+        cdef int idx1, idx2
+        if not self._buf:
+            return
+        self._path = self._buf.decode('utf-8', 'surrogateescape')
+        try:
+            idx3 = len(self._path)
+            if self._cparser.method == cparser.HTTP_CONNECT:
+                # authority-form,
+                # https://datatracker.ietf.org/doc/html/rfc7230#section-5.3.3
+                self._url = URL.build(authority=self._path, encoded=True)
+            elif idx3 > 1 and self._path[0] == '/':
+                # origin-form,
+                # https://datatracker.ietf.org/doc/html/rfc7230#section-5.3.1
+                idx1 = self._path.find("?")
+                if idx1 == -1:
+                    query = ""
+                    idx2 = self._path.find("#")
+                    if idx2 == -1:
+                        path = self._path
+                        fragment = ""
+                    else:
+                        path = self._path[0: idx2]
+                        fragment = self._path[idx2+1:]
+
+                else:
+                    path = self._path[0:idx1]
+                    idx1 += 1
+                    idx2 = self._path.find("#", idx1+1)
+                    if idx2 == -1:
+                        query = self._path[idx1:]
+                        fragment = ""
+                    else:
+                        query = self._path[idx1: idx2]
+                        fragment = self._path[idx2+1:]
+
+                self._url = URL.build(
+                    path=path,
+                    query_string=query,
+                    fragment=fragment,
+                    encoded=True,
+                )
+            else:
+                # absolute-form for proxy maybe,
+                # https://datatracker.ietf.org/doc/html/rfc7230#section-5.3.2
+                self._url = URL(self._path, encoded=True)
+        finally:
+            PyByteArray_Resize(self._buf, 0)
+
+
+cdef class HttpResponseParser(HttpParser):
+
+    def __init__(
+        self, protocol, loop, int limit, timer=None,
+            size_t max_line_size=8190, size_t max_headers=32768,
+            size_t max_field_size=8190, payload_exception=None,
+            bint response_with_body=True, bint read_until_eof=False,
+            bint auto_decompress=True
+    ):
+        self._init(cparser.HTTP_RESPONSE, protocol, loop, limit, timer,
+                   max_line_size, max_headers, max_field_size,
+                   payload_exception, response_with_body, read_until_eof,
+                   auto_decompress)
+        # Use strict parsing on dev mode, so users are warned about broken servers.
+        if not DEBUG:
+            cparser.llhttp_set_lenient_headers(self._cparser, 1)
+            cparser.llhttp_set_lenient_optional_cr_before_lf(self._cparser, 1)
+            cparser.llhttp_set_lenient_spaces_after_chunk_size(self._cparser, 1)
+
+    cdef object _on_status_complete(self):
+        if self._buf:
+            self._reason = self._buf.decode('utf-8', 'surrogateescape')
+            PyByteArray_Resize(self._buf, 0)
+        else:
+            self._reason = self._reason or ''
+
+cdef int cb_on_message_begin(cparser.llhttp_t* parser) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+
+    pyparser._started = True
+    pyparser._headers = CIMultiDict()
+    pyparser._raw_headers = []
+    PyByteArray_Resize(pyparser._buf, 0)
+    pyparser._path = None
+    pyparser._reason = None
+    return 0
+
+
+cdef int cb_on_url(cparser.llhttp_t* parser,
+                   const char *at, size_t length) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    try:
+        if length > pyparser._max_line_size:
+            raise LineTooLong(
+                'Status line is too long', pyparser._max_line_size, length)
+        extend(pyparser._buf, at, length)
+    except BaseException as ex:
+        pyparser._last_error = ex
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_status(cparser.llhttp_t* parser,
+                      const char *at, size_t length) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    cdef str reason
+    try:
+        if length > pyparser._max_line_size:
+            raise LineTooLong(
+                'Status line is too long', pyparser._max_line_size, length)
+        extend(pyparser._buf, at, length)
+    except BaseException as ex:
+        pyparser._last_error = ex
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_header_field(cparser.llhttp_t* parser,
+                            const char *at, size_t length) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    cdef Py_ssize_t size
+    try:
+        pyparser._on_status_complete()
+        size = len(pyparser._raw_name) + length
+        if size > pyparser._max_field_size:
+            raise LineTooLong(
+                'Header name is too long', pyparser._max_field_size, size)
+        pyparser._on_header_field(at, length)
+    except BaseException as ex:
+        pyparser._last_error = ex
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_header_value(cparser.llhttp_t* parser,
+                            const char *at, size_t length) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    cdef Py_ssize_t size
+    try:
+        size = len(pyparser._raw_value) + length
+        if size > pyparser._max_field_size:
+            raise LineTooLong(
+                'Header value is too long', pyparser._max_field_size, size)
+        pyparser._on_header_value(at, length)
+    except BaseException as ex:
+        pyparser._last_error = ex
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_headers_complete(cparser.llhttp_t* parser) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    try:
+        pyparser._on_status_complete()
+        pyparser._on_headers_complete()
+    except BaseException as exc:
+        pyparser._last_error = exc
+        return -1
+    else:
+        if (
+            pyparser._cparser.upgrade or
+            pyparser._cparser.method == cparser.HTTP_CONNECT
+        ):
+            return 2
+        else:
+            return 0
+
+
+cdef int cb_on_body(cparser.llhttp_t* parser,
+                    const char *at, size_t length) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    cdef bytes body = at[:length]
+    try:
+        pyparser._payload.feed_data(body, length)
+    except BaseException as underlying_exc:
+        reraised_exc = underlying_exc
+        if pyparser._payload_exception is not None:
+            reraised_exc = pyparser._payload_exception(str(underlying_exc))
+
+        set_exception(pyparser._payload, reraised_exc, underlying_exc)
+
+        pyparser._payload_error = 1
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_message_complete(cparser.llhttp_t* parser) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    try:
+        pyparser._started = False
+        pyparser._on_message_complete()
+    except BaseException as exc:
+        pyparser._last_error = exc
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_chunk_header(cparser.llhttp_t* parser) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    try:
+        pyparser._on_chunk_header()
+    except BaseException as exc:
+        pyparser._last_error = exc
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_chunk_complete(cparser.llhttp_t* parser) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    try:
+        pyparser._on_chunk_complete()
+    except BaseException as exc:
+        pyparser._last_error = exc
+        return -1
+    else:
+        return 0
+
+
+cdef parser_error_from_errno(cparser.llhttp_t* parser, data, pointer):
+    cdef cparser.llhttp_errno_t errno = cparser.llhttp_get_errno(parser)
+    cdef bytes desc = cparser.llhttp_get_error_reason(parser)
+
+    err_msg = "{}:\n\n  {!r}\n  {}".format(desc.decode("latin-1"), data, pointer)
+
+    if errno in {cparser.HPE_CB_MESSAGE_BEGIN,
+                 cparser.HPE_CB_HEADERS_COMPLETE,
+                 cparser.HPE_CB_MESSAGE_COMPLETE,
+                 cparser.HPE_CB_CHUNK_HEADER,
+                 cparser.HPE_CB_CHUNK_COMPLETE,
+                 cparser.HPE_INVALID_CONSTANT,
+                 cparser.HPE_INVALID_HEADER_TOKEN,
+                 cparser.HPE_INVALID_CONTENT_LENGTH,
+                 cparser.HPE_INVALID_CHUNK_SIZE,
+                 cparser.HPE_INVALID_EOF_STATE,
+                 cparser.HPE_INVALID_TRANSFER_ENCODING}:
+        return BadHttpMessage(err_msg)
+    elif errno in {cparser.HPE_INVALID_STATUS,
+                   cparser.HPE_INVALID_METHOD,
+                   cparser.HPE_INVALID_VERSION}:
+        return BadStatusLine(error=err_msg)
+    elif errno == cparser.HPE_INVALID_URL:
+        return InvalidURLError(err_msg)
+
+    return BadHttpMessage(err_msg)

venv/lib/python3.10/site-packages/aiohttp/_http_writer.pyx

@@ -0,0 +1,163 @@
+from cpython.bytes cimport PyBytes_FromStringAndSize
+from cpython.exc cimport PyErr_NoMemory
+from cpython.mem cimport PyMem_Free, PyMem_Malloc, PyMem_Realloc
+from cpython.object cimport PyObject_Str
+from libc.stdint cimport uint8_t, uint64_t
+from libc.string cimport memcpy
+
+from multidict import istr
+
+DEF BUF_SIZE = 16 * 1024  # 16KiB
+cdef char BUFFER[BUF_SIZE]
+
+cdef object _istr = istr
+
+
+# ----------------- writer ---------------------------
+
+cdef struct Writer:
+    char *buf
+    Py_ssize_t size
+    Py_ssize_t pos
+
+
+cdef inline void _init_writer(Writer* writer):
+    writer.buf = &BUFFER[0]
+    writer.size = BUF_SIZE
+    writer.pos = 0
+
+
+cdef inline void _release_writer(Writer* writer):
+    if writer.buf != BUFFER:
+        PyMem_Free(writer.buf)
+
+
+cdef inline int _write_byte(Writer* writer, uint8_t ch):
+    cdef char * buf
+    cdef Py_ssize_t size
+
+    if writer.pos == writer.size:
+        # reallocate
+        size = writer.size + BUF_SIZE
+        if writer.buf == BUFFER:
+            buf = <char*>PyMem_Malloc(size)
+            if buf == NULL:
+                PyErr_NoMemory()
+                return -1
+            memcpy(buf, writer.buf, writer.size)
+        else:
+            buf = <char*>PyMem_Realloc(writer.buf, size)
+            if buf == NULL:
+                PyErr_NoMemory()
+                return -1
+        writer.buf = buf
+        writer.size = size
+    writer.buf[writer.pos] = <char>ch
+    writer.pos += 1
+    return 0
+
+
+cdef inline int _write_utf8(Writer* writer, Py_UCS4 symbol):
+    cdef uint64_t utf = <uint64_t> symbol
+
+    if utf < 0x80:
+        return _write_byte(writer, <uint8_t>utf)
+    elif utf < 0x800:
+        if _write_byte(writer, <uint8_t>(0xc0 | (utf >> 6))) < 0:
+            return -1
+        return _write_byte(writer,  <uint8_t>(0x80 | (utf & 0x3f)))
+    elif 0xD800 <= utf <= 0xDFFF:
+        # surogate pair, ignored
+        return 0
+    elif utf < 0x10000:
+        if _write_byte(writer, <uint8_t>(0xe0 | (utf >> 12))) < 0:
+            return -1
+        if _write_byte(writer, <uint8_t>(0x80 | ((utf >> 6) & 0x3f))) < 0:
+            return -1
+        return _write_byte(writer, <uint8_t>(0x80 | (utf & 0x3f)))
+    elif utf > 0x10FFFF:
+        # symbol is too large
+        return 0
+    else:
+        if _write_byte(writer,  <uint8_t>(0xf0 | (utf >> 18))) < 0:
+            return -1
+        if _write_byte(writer,
+                       <uint8_t>(0x80 | ((utf >> 12) & 0x3f))) < 0:
+           return -1
+        if _write_byte(writer,
+                       <uint8_t>(0x80 | ((utf >> 6) & 0x3f))) < 0:
+            return -1
+        return _write_byte(writer, <uint8_t>(0x80 | (utf & 0x3f)))
+
+
+cdef inline int _write_str(Writer* writer, str s):
+    cdef Py_UCS4 ch
+    for ch in s:
+        if _write_utf8(writer, ch) < 0:
+            return -1
+
+
+# --------------- _serialize_headers ----------------------
+
+cdef str to_str(object s):
+    typ = type(s)
+    if typ is str:
+        return <str>s
+    elif typ is _istr:
+        return PyObject_Str(s)
+    elif not isinstance(s, str):
+        raise TypeError("Cannot serialize non-str key {!r}".format(s))
+    else:
+        return str(s)
+
+
+cdef void _safe_header(str string) except *:
+    if "\r" in string or "\n" in string:
+        raise ValueError(
+            "Newline or carriage return character detected in HTTP status message or "
+            "header. This is a potential security issue."
+        )
+
+
+def _serialize_headers(str status_line, headers):
+    cdef Writer writer
+    cdef object key
+    cdef object val
+    cdef bytes ret
+
+    _init_writer(&writer)
+
+    for key, val in headers.items():
+        _safe_header(to_str(key))
+        _safe_header(to_str(val))
+
+    try:
+        if _write_str(&writer, status_line) < 0:
+            raise
+        if _write_byte(&writer, b'\r') < 0:
+            raise
+        if _write_byte(&writer, b'\n') < 0:
+            raise
+
+        for key, val in headers.items():
+            if _write_str(&writer, to_str(key)) < 0:
+                raise
+            if _write_byte(&writer, b':') < 0:
+                raise
+            if _write_byte(&writer, b' ') < 0:
+                raise
+            if _write_str(&writer, to_str(val)) < 0:
+                raise
+            if _write_byte(&writer, b'\r') < 0:
+                raise
+            if _write_byte(&writer, b'\n') < 0:
+                raise
+
+        if _write_byte(&writer, b'\r') < 0:
+            raise
+        if _write_byte(&writer, b'\n') < 0:
+            raise
+
+        return PyBytes_FromStringAndSize(writer.buf, writer.pos)
+    finally:
+        _release_writer(&writer)

venv/lib/python3.10/site-packages/aiohttp/_websocket.pyx

@@ -0,0 +1,56 @@
+from cpython cimport PyBytes_AsString
+
+
+#from cpython cimport PyByteArray_AsString # cython still not exports that
+cdef extern from "Python.h":
+    char* PyByteArray_AsString(bytearray ba) except NULL
+
+from libc.stdint cimport uint32_t, uint64_t, uintmax_t
+
+
+def _websocket_mask_cython(object mask, object data):
+    """Note, this function mutates its `data` argument
+    """
+    cdef:
+        Py_ssize_t data_len, i
+        # bit operations on signed integers are implementation-specific
+        unsigned char * in_buf
+        const unsigned char * mask_buf
+        uint32_t uint32_msk
+        uint64_t uint64_msk
+
+    assert len(mask) == 4
+
+    if not isinstance(mask, bytes):
+        mask = bytes(mask)
+
+    if isinstance(data, bytearray):
+        data = <bytearray>data
+    else:
+        data = bytearray(data)
+
+    data_len = len(data)
+    in_buf = <unsigned char*>PyByteArray_AsString(data)
+    mask_buf = <const unsigned char*>PyBytes_AsString(mask)
+    uint32_msk = (<uint32_t*>mask_buf)[0]
+
+    # TODO: align in_data ptr to achieve even faster speeds
+    # does it need in python ?! malloc() always aligns to sizeof(long) bytes
+
+    if sizeof(size_t) >= 8:
+        uint64_msk = uint32_msk
+        uint64_msk = (uint64_msk << 32) | uint32_msk
+
+        while data_len >= 8:
+            (<uint64_t*>in_buf)[0] ^= uint64_msk
+            in_buf += 8
+            data_len -= 8
+
+
+    while data_len >= 4:
+        (<uint32_t*>in_buf)[0] ^= uint32_msk
+        in_buf += 4
+        data_len -= 4
+
+    for i in range(0, data_len):
+        in_buf[i] ^= mask_buf[i]

venv/lib/python3.10/site-packages/aiohttp/abc.py

@@ -0,0 +1,209 @@
+import asyncio
+import logging
+from abc import ABC, abstractmethod
+from collections.abc import Sized
+from http.cookies import BaseCookie, Morsel
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Awaitable,
+    Callable,
+    Dict,
+    Generator,
+    Iterable,
+    List,
+    Optional,
+    Tuple,
+)
+
+from multidict import CIMultiDict
+from yarl import URL
+
+from .helpers import get_running_loop
+from .typedefs import LooseCookies
+
+if TYPE_CHECKING:
+    from .web_app import Application
+    from .web_exceptions import HTTPException
+    from .web_request import BaseRequest, Request
+    from .web_response import StreamResponse
+else:
+    BaseRequest = Request = Application = StreamResponse = None
+    HTTPException = None
+
+
+class AbstractRouter(ABC):
+    def __init__(self) -> None:
+        self._frozen = False
+
+    def post_init(self, app: Application) -> None:
+        """Post init stage.
+
+        Not an abstract method for sake of backward compatibility,
+        but if the router wants to be aware of the application
+        it can override this.
+        """
+
+    @property
+    def frozen(self) -> bool:
+        return self._frozen
+
+    def freeze(self) -> None:
+        """Freeze router."""
+        self._frozen = True
+
+    @abstractmethod
+    async def resolve(self, request: Request) -> "AbstractMatchInfo":
+        """Return MATCH_INFO for given request"""
+
+
+class AbstractMatchInfo(ABC):
+    @property  # pragma: no branch
+    @abstractmethod
+    def handler(self) -> Callable[[Request], Awaitable[StreamResponse]]:
+        """Execute matched request handler"""
+
+    @property
+    @abstractmethod
+    def expect_handler(
+        self,
+    ) -> Callable[[Request], Awaitable[Optional[StreamResponse]]]:
+        """Expect handler for 100-continue processing"""
+
+    @property  # pragma: no branch
+    @abstractmethod
+    def http_exception(self) -> Optional[HTTPException]:
+        """HTTPException instance raised on router's resolving, or None"""
+
+    @abstractmethod  # pragma: no branch
+    def get_info(self) -> Dict[str, Any]:
+        """Return a dict with additional info useful for introspection"""
+
+    @property  # pragma: no branch
+    @abstractmethod
+    def apps(self) -> Tuple[Application, ...]:
+        """Stack of nested applications.
+
+        Top level application is left-most element.
+
+        """
+
+    @abstractmethod
+    def add_app(self, app: Application) -> None:
+        """Add application to the nested apps stack."""
+
+    @abstractmethod
+    def freeze(self) -> None:
+        """Freeze the match info.
+
+        The method is called after route resolution.
+
+        After the call .add_app() is forbidden.
+
+        """
+
+
+class AbstractView(ABC):
+    """Abstract class based view."""
+
+    def __init__(self, request: Request) -> None:
+        self._request = request
+
+    @property
+    def request(self) -> Request:
+        """Request instance."""
+        return self._request
+
+    @abstractmethod
+    def __await__(self) -> Generator[Any, None, StreamResponse]:
+        """Execute the view handler."""
+
+
+class AbstractResolver(ABC):
+    """Abstract DNS resolver."""
+
+    @abstractmethod
+    async def resolve(self, host: str, port: int, family: int) -> List[Dict[str, Any]]:
+        """Return IP address for given hostname"""
+
+    @abstractmethod
+    async def close(self) -> None:
+        """Release resolver"""
+
+
+if TYPE_CHECKING:
+    IterableBase = Iterable[Morsel[str]]
+else:
+    IterableBase = Iterable
+
+
+ClearCookiePredicate = Callable[["Morsel[str]"], bool]
+
+
+class AbstractCookieJar(Sized, IterableBase):
+    """Abstract Cookie Jar."""
+
+    def __init__(self, *, loop: Optional[asyncio.AbstractEventLoop] = None) -> None:
+        self._loop = get_running_loop(loop)
+
+    @abstractmethod
+    def clear(self, predicate: Optional[ClearCookiePredicate] = None) -> None:
+        """Clear all cookies if no predicate is passed."""
+
+    @abstractmethod
+    def clear_domain(self, domain: str) -> None:
+        """Clear all cookies for domain and all subdomains."""
+
+    @abstractmethod
+    def update_cookies(self, cookies: LooseCookies, response_url: URL = URL()) -> None:
+        """Update cookies."""
+
+    @abstractmethod
+    def filter_cookies(self, request_url: URL) -> "BaseCookie[str]":
+        """Return the jar's cookies filtered by their attributes."""
+
+
+class AbstractStreamWriter(ABC):
+    """Abstract stream writer."""
+
+    buffer_size = 0
+    output_size = 0
+    length: Optional[int] = 0
+
+    @abstractmethod
+    async def write(self, chunk: bytes) -> None:
+        """Write chunk into stream."""
+
+    @abstractmethod
+    async def write_eof(self, chunk: bytes = b"") -> None:
+        """Write last chunk."""
+
+    @abstractmethod
+    async def drain(self) -> None:
+        """Flush the write buffer."""
+
+    @abstractmethod
+    def enable_compression(self, encoding: str = "deflate") -> None:
+        """Enable HTTP body compression"""
+
+    @abstractmethod
+    def enable_chunking(self) -> None:
+        """Enable HTTP chunked mode"""
+
+    @abstractmethod
+    async def write_headers(
+        self, status_line: str, headers: "CIMultiDict[str]"
+    ) -> None:
+        """Write HTTP headers"""
+
+
+class AbstractAccessLogger(ABC):
+    """Abstract writer to access log."""
+
+    def __init__(self, logger: logging.Logger, log_format: str) -> None:
+        self.logger = logger
+        self.log_format = log_format
+
+    @abstractmethod
+    def log(self, request: BaseRequest, response: StreamResponse, time: float) -> None:
+        """Emit log to logger."""

venv/lib/python3.10/site-packages/aiohttp/base_protocol.py

@@ -0,0 +1,95 @@
+import asyncio
+from typing import Optional, cast
+
+from .helpers import set_exception
+from .tcp_helpers import tcp_nodelay
+
+
+class BaseProtocol(asyncio.Protocol):
+    __slots__ = (
+        "_loop",
+        "_paused",
+        "_drain_waiter",
+        "_connection_lost",
+        "_reading_paused",
+        "transport",
+    )
+
+    def __init__(self, loop: asyncio.AbstractEventLoop) -> None:
+        self._loop: asyncio.AbstractEventLoop = loop
+        self._paused = False
+        self._drain_waiter: Optional[asyncio.Future[None]] = None
+        self._reading_paused = False
+
+        self.transport: Optional[asyncio.Transport] = None
+
+    @property
+    def connected(self) -> bool:
+        """Return True if the connection is open."""
+        return self.transport is not None
+
+    def pause_writing(self) -> None:
+        assert not self._paused
+        self._paused = True
+
+    def resume_writing(self) -> None:
+        assert self._paused
+        self._paused = False
+
+        waiter = self._drain_waiter
+        if waiter is not None:
+            self._drain_waiter = None
+            if not waiter.done():
+                waiter.set_result(None)
+
+    def pause_reading(self) -> None:
+        if not self._reading_paused and self.transport is not None:
+            try:
+                self.transport.pause_reading()
+            except (AttributeError, NotImplementedError, RuntimeError):
+                pass
+            self._reading_paused = True
+
+    def resume_reading(self) -> None:
+        if self._reading_paused and self.transport is not None:
+            try:
+                self.transport.resume_reading()
+            except (AttributeError, NotImplementedError, RuntimeError):
+                pass
+            self._reading_paused = False
+
+    def connection_made(self, transport: asyncio.BaseTransport) -> None:
+        tr = cast(asyncio.Transport, transport)
+        tcp_nodelay(tr, True)
+        self.transport = tr
+
+    def connection_lost(self, exc: Optional[BaseException]) -> None:
+        # Wake up the writer if currently paused.
+        self.transport = None
+        if not self._paused:
+            return
+        waiter = self._drain_waiter
+        if waiter is None:
+            return
+        self._drain_waiter = None
+        if waiter.done():
+            return
+        if exc is None:
+            waiter.set_result(None)
+        else:
+            set_exception(
+                waiter,
+                ConnectionError("Connection lost"),
+                exc,
+            )
+
+    async def _drain_helper(self) -> None:
+        if not self.connected:
+            raise ConnectionResetError("Connection lost")
+        if not self._paused:
+            return
+        waiter = self._drain_waiter
+        if waiter is None:
+            waiter = self._loop.create_future()
+            self._drain_waiter = waiter
+        await asyncio.shield(waiter)

venv/lib/python3.10/site-packages/aiohttp/client.py

@@ -0,0 +1,1366 @@
+"""HTTP Client for asyncio."""
+
+import asyncio
+import base64
+import hashlib
+import json
+import os
+import sys
+import traceback
+import warnings
+from contextlib import suppress
+from types import SimpleNamespace, TracebackType
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Awaitable,
+    Callable,
+    Coroutine,
+    Final,
+    FrozenSet,
+    Generator,
+    Generic,
+    Iterable,
+    List,
+    Mapping,
+    Optional,
+    Set,
+    Tuple,
+    Type,
+    TypeVar,
+    Union,
+)
+
+import attr
+from multidict import CIMultiDict, MultiDict, MultiDictProxy, istr
+from yarl import URL
+
+from . import hdrs, http, payload
+from .abc import AbstractCookieJar
+from .client_exceptions import (
+    ClientConnectionError as ClientConnectionError,
+    ClientConnectorCertificateError as ClientConnectorCertificateError,
+    ClientConnectorError as ClientConnectorError,
+    ClientConnectorSSLError as ClientConnectorSSLError,
+    ClientError as ClientError,
+    ClientHttpProxyError as ClientHttpProxyError,
+    ClientOSError as ClientOSError,
+    ClientPayloadError as ClientPayloadError,
+    ClientProxyConnectionError as ClientProxyConnectionError,
+    ClientResponseError as ClientResponseError,
+    ClientSSLError as ClientSSLError,
+    ContentTypeError as ContentTypeError,
+    InvalidURL as InvalidURL,
+    ServerConnectionError as ServerConnectionError,
+    ServerDisconnectedError as ServerDisconnectedError,
+    ServerFingerprintMismatch as ServerFingerprintMismatch,
+    ServerTimeoutError as ServerTimeoutError,
+    TooManyRedirects as TooManyRedirects,
+    WSServerHandshakeError as WSServerHandshakeError,
+)
+from .client_reqrep import (
+    ClientRequest as ClientRequest,
+    ClientResponse as ClientResponse,
+    Fingerprint as Fingerprint,
+    RequestInfo as RequestInfo,
+    _merge_ssl_params,
+)
+from .client_ws import ClientWebSocketResponse as ClientWebSocketResponse
+from .connector import (
+    BaseConnector as BaseConnector,
+    NamedPipeConnector as NamedPipeConnector,
+    TCPConnector as TCPConnector,
+    UnixConnector as UnixConnector,
+)
+from .cookiejar import CookieJar
+from .helpers import (
+    _SENTINEL,
+    DEBUG,
+    BasicAuth,
+    TimeoutHandle,
+    ceil_timeout,
+    get_env_proxy_for_url,
+    get_running_loop,
+    method_must_be_empty_body,
+    sentinel,
+    strip_auth_from_url,
+)
+from .http import WS_KEY, HttpVersion, WebSocketReader, WebSocketWriter
+from .http_websocket import WSHandshakeError, WSMessage, ws_ext_gen, ws_ext_parse
+from .streams import FlowControlDataQueue
+from .tracing import Trace, TraceConfig
+from .typedefs import JSONEncoder, LooseCookies, LooseHeaders, StrOrURL
+
+__all__ = (
+    # client_exceptions
+    "ClientConnectionError",
+    "ClientConnectorCertificateError",
+    "ClientConnectorError",
+    "ClientConnectorSSLError",
+    "ClientError",
+    "ClientHttpProxyError",
+    "ClientOSError",
+    "ClientPayloadError",
+    "ClientProxyConnectionError",
+    "ClientResponseError",
+    "ClientSSLError",
+    "ContentTypeError",
+    "InvalidURL",
+    "ServerConnectionError",
+    "ServerDisconnectedError",
+    "ServerFingerprintMismatch",
+    "ServerTimeoutError",
+    "TooManyRedirects",
+    "WSServerHandshakeError",
+    # client_reqrep
+    "ClientRequest",
+    "ClientResponse",
+    "Fingerprint",
+    "RequestInfo",
+    # connector
+    "BaseConnector",
+    "TCPConnector",
+    "UnixConnector",
+    "NamedPipeConnector",
+    # client_ws
+    "ClientWebSocketResponse",
+    # client
+    "ClientSession",
+    "ClientTimeout",
+    "request",
+)
+
+
+if TYPE_CHECKING:
+    from ssl import SSLContext
+else:
+    SSLContext = None
+
+
+@attr.s(auto_attribs=True, frozen=True, slots=True)
+class ClientTimeout:
+    total: Optional[float] = None
+    connect: Optional[float] = None
+    sock_read: Optional[float] = None
+    sock_connect: Optional[float] = None
+    ceil_threshold: float = 5
+
+    # pool_queue_timeout: Optional[float] = None
+    # dns_resolution_timeout: Optional[float] = None
+    # socket_connect_timeout: Optional[float] = None
+    # connection_acquiring_timeout: Optional[float] = None
+    # new_connection_timeout: Optional[float] = None
+    # http_header_timeout: Optional[float] = None
+    # response_body_timeout: Optional[float] = None
+
+    # to create a timeout specific for a single request, either
+    # - create a completely new one to overwrite the default
+    # - or use http://www.attrs.org/en/stable/api.html#attr.evolve
+    # to overwrite the defaults
+
+
+# 5 Minute default read timeout
+DEFAULT_TIMEOUT: Final[ClientTimeout] = ClientTimeout(total=5 * 60)
+
+_RetType = TypeVar("_RetType")
+_CharsetResolver = Callable[[ClientResponse, bytes], str]
+
+
+class ClientSession:
+    """First-class interface for making HTTP requests."""
+
+    ATTRS = frozenset(
+        [
+            "_base_url",
+            "_source_traceback",
+            "_connector",
+            "requote_redirect_url",
+            "_loop",
+            "_cookie_jar",
+            "_connector_owner",
+            "_default_auth",
+            "_version",
+            "_json_serialize",
+            "_requote_redirect_url",
+            "_timeout",
+            "_raise_for_status",
+            "_auto_decompress",
+            "_trust_env",
+            "_default_headers",
+            "_skip_auto_headers",
+            "_request_class",
+            "_response_class",
+            "_ws_response_class",
+            "_trace_configs",
+            "_read_bufsize",
+            "_max_line_size",
+            "_max_field_size",
+            "_resolve_charset",
+        ]
+    )
+
+    _source_traceback: Optional[traceback.StackSummary] = None
+    _connector: Optional[BaseConnector] = None
+
+    def __init__(
+        self,
+        base_url: Optional[StrOrURL] = None,
+        *,
+        connector: Optional[BaseConnector] = None,
+        loop: Optional[asyncio.AbstractEventLoop] = None,
+        cookies: Optional[LooseCookies] = None,
+        headers: Optional[LooseHeaders] = None,
+        skip_auto_headers: Optional[Iterable[str]] = None,
+        auth: Optional[BasicAuth] = None,
+        json_serialize: JSONEncoder = json.dumps,
+        request_class: Type[ClientRequest] = ClientRequest,
+        response_class: Type[ClientResponse] = ClientResponse,
+        ws_response_class: Type[ClientWebSocketResponse] = ClientWebSocketResponse,
+        version: HttpVersion = http.HttpVersion11,
+        cookie_jar: Optional[AbstractCookieJar] = None,
+        connector_owner: bool = True,
+        raise_for_status: Union[
+            bool, Callable[[ClientResponse], Awaitable[None]]
+        ] = False,
+        read_timeout: Union[float, _SENTINEL] = sentinel,
+        conn_timeout: Optional[float] = None,
+        timeout: Union[object, ClientTimeout] = sentinel,
+        auto_decompress: bool = True,
+        trust_env: bool = False,
+        requote_redirect_url: bool = True,
+        trace_configs: Optional[List[TraceConfig]] = None,
+        read_bufsize: int = 2**16,
+        max_line_size: int = 8190,
+        max_field_size: int = 8190,
+        fallback_charset_resolver: _CharsetResolver = lambda r, b: "utf-8",
+    ) -> None:
+        # We initialise _connector to None immediately, as it's referenced in __del__()
+        # and could cause issues if an exception occurs during initialisation.
+        self._connector: Optional[BaseConnector] = None
+        if timeout is sentinel or timeout is None:
+            self._timeout = DEFAULT_TIMEOUT
+            if read_timeout is not sentinel:
+                warnings.warn(
+                    "read_timeout is deprecated, " "use timeout argument instead",
+                    DeprecationWarning,
+                    stacklevel=2,
+                )
+                self._timeout = attr.evolve(self._timeout, total=read_timeout)
+            if conn_timeout is not None:
+                self._timeout = attr.evolve(self._timeout, connect=conn_timeout)
+                warnings.warn(
+                    "conn_timeout is deprecated, " "use timeout argument instead",
+                    DeprecationWarning,
+                    stacklevel=2,
+                )
+        else:
+            if not isinstance(timeout, ClientTimeout):
+                raise ValueError(
+                    f"timeout parameter cannot be of {type(timeout)} type, "
+                    "please use 'timeout=ClientTimeout(...)'",
+                )
+            self._timeout = timeout
+            if read_timeout is not sentinel:
+                raise ValueError(
+                    "read_timeout and timeout parameters "
+                    "conflict, please setup "
+                    "timeout.read"
+                )
+            if conn_timeout is not None:
+                raise ValueError(
+                    "conn_timeout and timeout parameters "
+                    "conflict, please setup "
+                    "timeout.connect"
+                )
+        if loop is None:
+            if connector is not None:
+                loop = connector._loop
+
+        loop = get_running_loop(loop)
+
+        if base_url is None or isinstance(base_url, URL):
+            self._base_url: Optional[URL] = base_url
+        else:
+            self._base_url = URL(base_url)
+            assert (
+                self._base_url.origin() == self._base_url
+            ), "Only absolute URLs without path part are supported"
+
+        if connector is None:
+            connector = TCPConnector(loop=loop)
+
+        if connector._loop is not loop:
+            raise RuntimeError("Session and connector has to use same event loop")
+
+        self._loop = loop
+
+        if loop.get_debug():
+            self._source_traceback = traceback.extract_stack(sys._getframe(1))
+
+        if cookie_jar is None:
+            cookie_jar = CookieJar(loop=loop)
+        self._cookie_jar = cookie_jar
+
+        if cookies is not None:
+            self._cookie_jar.update_cookies(cookies)
+
+        self._connector = connector
+        self._connector_owner = connector_owner
+        self._default_auth = auth
+        self._version = version
+        self._json_serialize = json_serialize
+        self._raise_for_status = raise_for_status
+        self._auto_decompress = auto_decompress
+        self._trust_env = trust_env
+        self._requote_redirect_url = requote_redirect_url
+        self._read_bufsize = read_bufsize
+        self._max_line_size = max_line_size
+        self._max_field_size = max_field_size
+
+        # Convert to list of tuples
+        if headers:
+            real_headers: CIMultiDict[str] = CIMultiDict(headers)
+        else:
+            real_headers = CIMultiDict()
+        self._default_headers: CIMultiDict[str] = real_headers
+        if skip_auto_headers is not None:
+            self._skip_auto_headers = frozenset(istr(i) for i in skip_auto_headers)
+        else:
+            self._skip_auto_headers = frozenset()
+
+        self._request_class = request_class
+        self._response_class = response_class
+        self._ws_response_class = ws_response_class
+
+        self._trace_configs = trace_configs or []
+        for trace_config in self._trace_configs:
+            trace_config.freeze()
+
+        self._resolve_charset = fallback_charset_resolver
+
+    def __init_subclass__(cls: Type["ClientSession"]) -> None:
+        warnings.warn(
+            "Inheritance class {} from ClientSession "
+            "is discouraged".format(cls.__name__),
+            DeprecationWarning,
+            stacklevel=2,
+        )
+
+    if DEBUG:
+
+        def __setattr__(self, name: str, val: Any) -> None:
+            if name not in self.ATTRS:
+                warnings.warn(
+                    "Setting custom ClientSession.{} attribute "
+                    "is discouraged".format(name),
+                    DeprecationWarning,
+                    stacklevel=2,
+                )
+            super().__setattr__(name, val)
+
+    def __del__(self, _warnings: Any = warnings) -> None:
+        if not self.closed:
+            kwargs = {"source": self}
+            _warnings.warn(
+                f"Unclosed client session {self!r}", ResourceWarning, **kwargs
+            )
+            context = {"client_session": self, "message": "Unclosed client session"}
+            if self._source_traceback is not None:
+                context["source_traceback"] = self._source_traceback
+            self._loop.call_exception_handler(context)
+
+    def request(
+        self, method: str, url: StrOrURL, **kwargs: Any
+    ) -> "_RequestContextManager":
+        """Perform HTTP request."""
+        return _RequestContextManager(self._request(method, url, **kwargs))
+
+    def _build_url(self, str_or_url: StrOrURL) -> URL:
+        url = URL(str_or_url)
+        if self._base_url is None:
+            return url
+        else:
+            assert not url.is_absolute() and url.path.startswith("/")
+            return self._base_url.join(url)
+
+    async def _request(
+        self,
+        method: str,
+        str_or_url: StrOrURL,
+        *,
+        params: Optional[Mapping[str, str]] = None,
+        data: Any = None,
+        json: Any = None,
+        cookies: Optional[LooseCookies] = None,
+        headers: Optional[LooseHeaders] = None,
+        skip_auto_headers: Optional[Iterable[str]] = None,
+        auth: Optional[BasicAuth] = None,
+        allow_redirects: bool = True,
+        max_redirects: int = 10,
+        compress: Optional[str] = None,
+        chunked: Optional[bool] = None,
+        expect100: bool = False,
+        raise_for_status: Union[
+            None, bool, Callable[[ClientResponse], Awaitable[None]]
+        ] = None,
+        read_until_eof: bool = True,
+        proxy: Optional[StrOrURL] = None,
+        proxy_auth: Optional[BasicAuth] = None,
+        timeout: Union[ClientTimeout, _SENTINEL] = sentinel,
+        verify_ssl: Optional[bool] = None,
+        fingerprint: Optional[bytes] = None,
+        ssl_context: Optional[SSLContext] = None,
+        ssl: Union[SSLContext, bool, Fingerprint] = True,
+        server_hostname: Optional[str] = None,
+        proxy_headers: Optional[LooseHeaders] = None,
+        trace_request_ctx: Optional[SimpleNamespace] = None,
+        read_bufsize: Optional[int] = None,
+        auto_decompress: Optional[bool] = None,
+        max_line_size: Optional[int] = None,
+        max_field_size: Optional[int] = None,
+    ) -> ClientResponse:
+
+        # NOTE: timeout clamps existing connect and read timeouts.  We cannot
+        # set the default to None because we need to detect if the user wants
+        # to use the existing timeouts by setting timeout to None.
+
+        if self.closed:
+            raise RuntimeError("Session is closed")
+
+        ssl = _merge_ssl_params(ssl, verify_ssl, ssl_context, fingerprint)
+
+        if data is not None and json is not None:
+            raise ValueError(
+                "data and json parameters can not be used at the same time"
+            )
+        elif json is not None:
+            data = payload.JsonPayload(json, dumps=self._json_serialize)
+
+        if not isinstance(chunked, bool) and chunked is not None:
+            warnings.warn("Chunk size is deprecated #1615", DeprecationWarning)
+
+        redirects = 0
+        history = []
+        version = self._version
+        params = params or {}
+
+        # Merge with default headers and transform to CIMultiDict
+        headers = self._prepare_headers(headers)
+        proxy_headers = self._prepare_headers(proxy_headers)
+
+        try:
+            url = self._build_url(str_or_url)
+        except ValueError as e:
+            raise InvalidURL(str_or_url) from e
+
+        skip_headers = set(self._skip_auto_headers)
+        if skip_auto_headers is not None:
+            for i in skip_auto_headers:
+                skip_headers.add(istr(i))
+
+        if proxy is not None:
+            try:
+                proxy = URL(proxy)
+            except ValueError as e:
+                raise InvalidURL(proxy) from e
+
+        if timeout is sentinel:
+            real_timeout: ClientTimeout = self._timeout
+        else:
+            if not isinstance(timeout, ClientTimeout):
+                real_timeout = ClientTimeout(total=timeout)
+            else:
+                real_timeout = timeout
+        # timeout is cumulative for all request operations
+        # (request, redirects, responses, data consuming)
+        tm = TimeoutHandle(
+            self._loop, real_timeout.total, ceil_threshold=real_timeout.ceil_threshold
+        )
+        handle = tm.start()
+
+        if read_bufsize is None:
+            read_bufsize = self._read_bufsize
+
+        if auto_decompress is None:
+            auto_decompress = self._auto_decompress
+
+        if max_line_size is None:
+            max_line_size = self._max_line_size
+
+        if max_field_size is None:
+            max_field_size = self._max_field_size
+
+        traces = [
+            Trace(
+                self,
+                trace_config,
+                trace_config.trace_config_ctx(trace_request_ctx=trace_request_ctx),
+            )
+            for trace_config in self._trace_configs
+        ]
+
+        for trace in traces:
+            await trace.send_request_start(method, url.update_query(params), headers)
+
+        timer = tm.timer()
+        try:
+            with timer:
+                while True:
+                    url, auth_from_url = strip_auth_from_url(url)
+                    if auth and auth_from_url:
+                        raise ValueError(
+                            "Cannot combine AUTH argument with "
+                            "credentials encoded in URL"
+                        )
+
+                    if auth is None:
+                        auth = auth_from_url
+                    if auth is None:
+                        auth = self._default_auth
+                    # It would be confusing if we support explicit
+                    # Authorization header with auth argument
+                    if (
+                        headers is not None
+                        and auth is not None
+                        and hdrs.AUTHORIZATION in headers
+                    ):
+                        raise ValueError(
+                            "Cannot combine AUTHORIZATION header "
+                            "with AUTH argument or credentials "
+                            "encoded in URL"
+                        )
+
+                    all_cookies = self._cookie_jar.filter_cookies(url)
+
+                    if cookies is not None:
+                        tmp_cookie_jar = CookieJar()
+                        tmp_cookie_jar.update_cookies(cookies)
+                        req_cookies = tmp_cookie_jar.filter_cookies(url)
+                        if req_cookies:
+                            all_cookies.load(req_cookies)
+
+                    if proxy is not None:
+                        proxy = URL(proxy)
+                    elif self._trust_env:
+                        with suppress(LookupError):
+                            proxy, proxy_auth = get_env_proxy_for_url(url)
+
+                    req = self._request_class(
+                        method,
+                        url,
+                        params=params,
+                        headers=headers,
+                        skip_auto_headers=skip_headers,
+                        data=data,
+                        cookies=all_cookies,
+                        auth=auth,
+                        version=version,
+                        compress=compress,
+                        chunked=chunked,
+                        expect100=expect100,
+                        loop=self._loop,
+                        response_class=self._response_class,
+                        proxy=proxy,
+                        proxy_auth=proxy_auth,
+                        timer=timer,
+                        session=self,
+                        ssl=ssl if ssl is not None else True,
+                        server_hostname=server_hostname,
+                        proxy_headers=proxy_headers,
+                        traces=traces,
+                        trust_env=self.trust_env,
+                    )
+
+                    # connection timeout
+                    try:
+                        async with ceil_timeout(
+                            real_timeout.connect,
+                            ceil_threshold=real_timeout.ceil_threshold,
+                        ):
+                            assert self._connector is not None
+                            conn = await self._connector.connect(
+                                req, traces=traces, timeout=real_timeout
+                            )
+                    except asyncio.TimeoutError as exc:
+                        raise ServerTimeoutError(
+                            "Connection timeout " "to host {}".format(url)
+                        ) from exc
+
+                    assert conn.transport is not None
+
+                    assert conn.protocol is not None
+                    conn.protocol.set_response_params(
+                        timer=timer,
+                        skip_payload=method_must_be_empty_body(method),
+                        read_until_eof=read_until_eof,
+                        auto_decompress=auto_decompress,
+                        read_timeout=real_timeout.sock_read,
+                        read_bufsize=read_bufsize,
+                        timeout_ceil_threshold=self._connector._timeout_ceil_threshold,
+                        max_line_size=max_line_size,
+                        max_field_size=max_field_size,
+                    )
+
+                    try:
+                        try:
+                            resp = await req.send(conn)
+                            try:
+                                await resp.start(conn)
+                            except BaseException:
+                                resp.close()
+                                raise
+                        except BaseException:
+                            conn.close()
+                            raise
+                    except ClientError:
+                        raise
+                    except OSError as exc:
+                        if exc.errno is None and isinstance(exc, asyncio.TimeoutError):
+                            raise
+                        raise ClientOSError(*exc.args) from exc
+
+                    self._cookie_jar.update_cookies(resp.cookies, resp.url)
+
+                    # redirects
+                    if resp.status in (301, 302, 303, 307, 308) and allow_redirects:
+
+                        for trace in traces:
+                            await trace.send_request_redirect(
+                                method, url.update_query(params), headers, resp
+                            )
+
+                        redirects += 1
+                        history.append(resp)
+                        if max_redirects and redirects >= max_redirects:
+                            resp.close()
+                            raise TooManyRedirects(
+                                history[0].request_info, tuple(history)
+                            )
+
+                        # For 301 and 302, mimic IE, now changed in RFC
+                        # https://github.com/kennethreitz/requests/pull/269
+                        if (resp.status == 303 and resp.method != hdrs.METH_HEAD) or (
+                            resp.status in (301, 302) and resp.method == hdrs.METH_POST
+                        ):
+                            method = hdrs.METH_GET
+                            data = None
+                            if headers.get(hdrs.CONTENT_LENGTH):
+                                headers.pop(hdrs.CONTENT_LENGTH)
+
+                        r_url = resp.headers.get(hdrs.LOCATION) or resp.headers.get(
+                            hdrs.URI
+                        )
+                        if r_url is None:
+                            # see github.com/aio-libs/aiohttp/issues/2022
+                            break
+                        else:
+                            # reading from correct redirection
+                            # response is forbidden
+                            resp.release()
+
+                        try:
+                            parsed_url = URL(
+                                r_url, encoded=not self._requote_redirect_url
+                            )
+
+                        except ValueError as e:
+                            raise InvalidURL(r_url) from e
+
+                        scheme = parsed_url.scheme
+                        if scheme not in ("http", "https", ""):
+                            resp.close()
+                            raise ValueError("Can redirect only to http or https")
+                        elif not scheme:
+                            parsed_url = url.join(parsed_url)
+
+                        if url.origin() != parsed_url.origin():
+                            auth = None
+                            headers.pop(hdrs.AUTHORIZATION, None)
+
+                        url = parsed_url
+                        params = {}
+                        resp.release()
+                        continue
+
+                    break
+
+            # check response status
+            if raise_for_status is None:
+                raise_for_status = self._raise_for_status
+
+            if raise_for_status is None:
+                pass
+            elif callable(raise_for_status):
+                await raise_for_status(resp)
+            elif raise_for_status:
+                resp.raise_for_status()
+
+            # register connection
+            if handle is not None:
+                if resp.connection is not None:
+                    resp.connection.add_callback(handle.cancel)
+                else:
+                    handle.cancel()
+
+            resp._history = tuple(history)
+
+            for trace in traces:
+                await trace.send_request_end(
+                    method, url.update_query(params), headers, resp
+                )
+            return resp
+
+        except BaseException as e:
+            # cleanup timer
+            tm.close()
+            if handle:
+                handle.cancel()
+                handle = None
+
+            for trace in traces:
+                await trace.send_request_exception(
+                    method, url.update_query(params), headers, e
+                )
+            raise
+
+    def ws_connect(
+        self,
+        url: StrOrURL,
+        *,
+        method: str = hdrs.METH_GET,
+        protocols: Iterable[str] = (),
+        timeout: float = 10.0,
+        receive_timeout: Optional[float] = None,
+        autoclose: bool = True,
+        autoping: bool = True,
+        heartbeat: Optional[float] = None,
+        auth: Optional[BasicAuth] = None,
+        origin: Optional[str] = None,
+        params: Optional[Mapping[str, str]] = None,
+        headers: Optional[LooseHeaders] = None,
+        proxy: Optional[StrOrURL] = None,
+        proxy_auth: Optional[BasicAuth] = None,
+        ssl: Union[SSLContext, bool, None, Fingerprint] = True,
+        verify_ssl: Optional[bool] = None,
+        fingerprint: Optional[bytes] = None,
+        ssl_context: Optional[SSLContext] = None,
+        proxy_headers: Optional[LooseHeaders] = None,
+        compress: int = 0,
+        max_msg_size: int = 4 * 1024 * 1024,
+    ) -> "_WSRequestContextManager":
+        """Initiate websocket connection."""
+        return _WSRequestContextManager(
+            self._ws_connect(
+                url,
+                method=method,
+                protocols=protocols,
+                timeout=timeout,
+                receive_timeout=receive_timeout,
+                autoclose=autoclose,
+                autoping=autoping,
+                heartbeat=heartbeat,
+                auth=auth,
+                origin=origin,
+                params=params,
+                headers=headers,
+                proxy=proxy,
+                proxy_auth=proxy_auth,
+                ssl=ssl,
+                verify_ssl=verify_ssl,
+                fingerprint=fingerprint,
+                ssl_context=ssl_context,
+                proxy_headers=proxy_headers,
+                compress=compress,
+                max_msg_size=max_msg_size,
+            )
+        )
+
+    async def _ws_connect(
+        self,
+        url: StrOrURL,
+        *,
+        method: str = hdrs.METH_GET,
+        protocols: Iterable[str] = (),
+        timeout: float = 10.0,
+        receive_timeout: Optional[float] = None,
+        autoclose: bool = True,
+        autoping: bool = True,
+        heartbeat: Optional[float] = None,
+        auth: Optional[BasicAuth] = None,
+        origin: Optional[str] = None,
+        params: Optional[Mapping[str, str]] = None,
+        headers: Optional[LooseHeaders] = None,
+        proxy: Optional[StrOrURL] = None,
+        proxy_auth: Optional[BasicAuth] = None,
+        ssl: Optional[Union[SSLContext, bool, Fingerprint]] = True,
+        verify_ssl: Optional[bool] = None,
+        fingerprint: Optional[bytes] = None,
+        ssl_context: Optional[SSLContext] = None,
+        proxy_headers: Optional[LooseHeaders] = None,
+        compress: int = 0,
+        max_msg_size: int = 4 * 1024 * 1024,
+    ) -> ClientWebSocketResponse:
+
+        if headers is None:
+            real_headers: CIMultiDict[str] = CIMultiDict()
+        else:
+            real_headers = CIMultiDict(headers)
+
+        default_headers = {
+            hdrs.UPGRADE: "websocket",
+            hdrs.CONNECTION: "Upgrade",
+            hdrs.SEC_WEBSOCKET_VERSION: "13",
+        }
+
+        for key, value in default_headers.items():
+            real_headers.setdefault(key, value)
+
+        sec_key = base64.b64encode(os.urandom(16))
+        real_headers[hdrs.SEC_WEBSOCKET_KEY] = sec_key.decode()
+
+        if protocols:
+            real_headers[hdrs.SEC_WEBSOCKET_PROTOCOL] = ",".join(protocols)
+        if origin is not None:
+            real_headers[hdrs.ORIGIN] = origin
+        if compress:
+            extstr = ws_ext_gen(compress=compress)
+            real_headers[hdrs.SEC_WEBSOCKET_EXTENSIONS] = extstr
+
+        # For the sake of backward compatibility, if user passes in None, convert it to True
+        if ssl is None:
+            ssl = True
+        ssl = _merge_ssl_params(ssl, verify_ssl, ssl_context, fingerprint)
+
+        # send request
+        resp = await self.request(
+            method,
+            url,
+            params=params,
+            headers=real_headers,
+            read_until_eof=False,
+            auth=auth,
+            proxy=proxy,
+            proxy_auth=proxy_auth,
+            ssl=ssl,
+            proxy_headers=proxy_headers,
+        )
+
+        try:
+            # check handshake
+            if resp.status != 101:
+                raise WSServerHandshakeError(
+                    resp.request_info,
+                    resp.history,
+                    message="Invalid response status",
+                    status=resp.status,
+                    headers=resp.headers,
+                )
+
+            if resp.headers.get(hdrs.UPGRADE, "").lower() != "websocket":
+                raise WSServerHandshakeError(
+                    resp.request_info,
+                    resp.history,
+                    message="Invalid upgrade header",
+                    status=resp.status,
+                    headers=resp.headers,
+                )
+
+            if resp.headers.get(hdrs.CONNECTION, "").lower() != "upgrade":
+                raise WSServerHandshakeError(
+                    resp.request_info,
+                    resp.history,
+                    message="Invalid connection header",
+                    status=resp.status,
+                    headers=resp.headers,
+                )
+
+            # key calculation
+            r_key = resp.headers.get(hdrs.SEC_WEBSOCKET_ACCEPT, "")
+            match = base64.b64encode(hashlib.sha1(sec_key + WS_KEY).digest()).decode()
+            if r_key != match:
+                raise WSServerHandshakeError(
+                    resp.request_info,
+                    resp.history,
+                    message="Invalid challenge response",
+                    status=resp.status,
+                    headers=resp.headers,
+                )
+
+            # websocket protocol
+            protocol = None
+            if protocols and hdrs.SEC_WEBSOCKET_PROTOCOL in resp.headers:
+                resp_protocols = [
+                    proto.strip()
+                    for proto in resp.headers[hdrs.SEC_WEBSOCKET_PROTOCOL].split(",")
+                ]
+
+                for proto in resp_protocols:
+                    if proto in protocols:
+                        protocol = proto
+                        break
+
+            # websocket compress
+            notakeover = False
+            if compress:
+                compress_hdrs = resp.headers.get(hdrs.SEC_WEBSOCKET_EXTENSIONS)
+                if compress_hdrs:
+                    try:
+                        compress, notakeover = ws_ext_parse(compress_hdrs)
+                    except WSHandshakeError as exc:
+                        raise WSServerHandshakeError(
+                            resp.request_info,
+                            resp.history,
+                            message=exc.args[0],
+                            status=resp.status,
+                            headers=resp.headers,
+                        ) from exc
+                else:
+                    compress = 0
+                    notakeover = False
+
+            conn = resp.connection
+            assert conn is not None
+            conn_proto = conn.protocol
+            assert conn_proto is not None
+            transport = conn.transport
+            assert transport is not None
+            reader: FlowControlDataQueue[WSMessage] = FlowControlDataQueue(
+                conn_proto, 2**16, loop=self._loop
+            )
+            conn_proto.set_parser(WebSocketReader(reader, max_msg_size), reader)
+            writer = WebSocketWriter(
+                conn_proto,
+                transport,
+                use_mask=True,
+                compress=compress,
+                notakeover=notakeover,
+            )
+        except BaseException:
+            resp.close()
+            raise
+        else:
+            return self._ws_response_class(
+                reader,
+                writer,
+                protocol,
+                resp,
+                timeout,
+                autoclose,
+                autoping,
+                self._loop,
+                receive_timeout=receive_timeout,
+                heartbeat=heartbeat,
+                compress=compress,
+                client_notakeover=notakeover,
+            )
+
+    def _prepare_headers(self, headers: Optional[LooseHeaders]) -> "CIMultiDict[str]":
+        """Add default headers and transform it to CIMultiDict"""
+        # Convert headers to MultiDict
+        result = CIMultiDict(self._default_headers)
+        if headers:
+            if not isinstance(headers, (MultiDictProxy, MultiDict)):
+                headers = CIMultiDict(headers)
+            added_names: Set[str] = set()
+            for key, value in headers.items():
+                if key in added_names:
+                    result.add(key, value)
+                else:
+                    result[key] = value
+                    added_names.add(key)
+        return result
+
+    def get(
+        self, url: StrOrURL, *, allow_redirects: bool = True, **kwargs: Any
+    ) -> "_RequestContextManager":
+        """Perform HTTP GET request."""
+        return _RequestContextManager(
+            self._request(hdrs.METH_GET, url, allow_redirects=allow_redirects, **kwargs)
+        )
+
+    def options(
+        self, url: StrOrURL, *, allow_redirects: bool = True, **kwargs: Any
+    ) -> "_RequestContextManager":
+        """Perform HTTP OPTIONS request."""
+        return _RequestContextManager(
+            self._request(
+                hdrs.METH_OPTIONS, url, allow_redirects=allow_redirects, **kwargs
+            )
+        )
+
+    def head(
+        self, url: StrOrURL, *, allow_redirects: bool = False, **kwargs: Any
+    ) -> "_RequestContextManager":
+        """Perform HTTP HEAD request."""
+        return _RequestContextManager(
+            self._request(
+                hdrs.METH_HEAD, url, allow_redirects=allow_redirects, **kwargs
+            )
+        )
+
+    def post(
+        self, url: StrOrURL, *, data: Any = None, **kwargs: Any
+    ) -> "_RequestContextManager":
+        """Perform HTTP POST request."""
+        return _RequestContextManager(
+            self._request(hdrs.METH_POST, url, data=data, **kwargs)
+        )
+
+    def put(
+        self, url: StrOrURL, *, data: Any = None, **kwargs: Any
+    ) -> "_RequestContextManager":
+        """Perform HTTP PUT request."""
+        return _RequestContextManager(
+            self._request(hdrs.METH_PUT, url, data=data, **kwargs)
+        )
+
+    def patch(
+        self, url: StrOrURL, *, data: Any = None, **kwargs: Any
+    ) -> "_RequestContextManager":
+        """Perform HTTP PATCH request."""
+        return _RequestContextManager(
+            self._request(hdrs.METH_PATCH, url, data=data, **kwargs)
+        )
+
+    def delete(self, url: StrOrURL, **kwargs: Any) -> "_RequestContextManager":
+        """Perform HTTP DELETE request."""
+        return _RequestContextManager(self._request(hdrs.METH_DELETE, url, **kwargs))
+
+    async def close(self) -> None:
+        """Close underlying connector.
+
+        Release all acquired resources.
+        """
+        if not self.closed:
+            if self._connector is not None and self._connector_owner:
+                await self._connector.close()
+            self._connector = None
+
+    @property
+    def closed(self) -> bool:
+        """Is client session closed.
+
+        A readonly property.
+        """
+        return self._connector is None or self._connector.closed
+
+    @property
+    def connector(self) -> Optional[BaseConnector]:
+        """Connector instance used for the session."""
+        return self._connector
+
+    @property
+    def cookie_jar(self) -> AbstractCookieJar:
+        """The session cookies."""
+        return self._cookie_jar
+
+    @property
+    def version(self) -> Tuple[int, int]:
+        """The session HTTP protocol version."""
+        return self._version
+
+    @property
+    def requote_redirect_url(self) -> bool:
+        """Do URL requoting on redirection handling."""
+        return self._requote_redirect_url
+
+    @requote_redirect_url.setter
+    def requote_redirect_url(self, val: bool) -> None:
+        """Do URL requoting on redirection handling."""
+        warnings.warn(
+            "session.requote_redirect_url modification " "is deprecated #2778",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        self._requote_redirect_url = val
+
+    @property
+    def loop(self) -> asyncio.AbstractEventLoop:
+        """Session's loop."""
+        warnings.warn(
+            "client.loop property is deprecated", DeprecationWarning, stacklevel=2
+        )
+        return self._loop
+
+    @property
+    def timeout(self) -> ClientTimeout:
+        """Timeout for the session."""
+        return self._timeout
+
+    @property
+    def headers(self) -> "CIMultiDict[str]":
+        """The default headers of the client session."""
+        return self._default_headers
+
+    @property
+    def skip_auto_headers(self) -> FrozenSet[istr]:
+        """Headers for which autogeneration should be skipped"""
+        return self._skip_auto_headers
+
+    @property
+    def auth(self) -> Optional[BasicAuth]:
+        """An object that represents HTTP Basic Authorization"""
+        return self._default_auth
+
+    @property
+    def json_serialize(self) -> JSONEncoder:
+        """Json serializer callable"""
+        return self._json_serialize
+
+    @property
+    def connector_owner(self) -> bool:
+        """Should connector be closed on session closing"""
+        return self._connector_owner
+
+    @property
+    def raise_for_status(
+        self,
+    ) -> Union[bool, Callable[[ClientResponse], Awaitable[None]]]:
+        """Should `ClientResponse.raise_for_status()` be called for each response."""
+        return self._raise_for_status
+
+    @property
+    def auto_decompress(self) -> bool:
+        """Should the body response be automatically decompressed."""
+        return self._auto_decompress
+
+    @property
+    def trust_env(self) -> bool:
+        """
+        Should proxies information from environment or netrc be trusted.
+
+        Information is from HTTP_PROXY / HTTPS_PROXY environment variables
+        or ~/.netrc file if present.
+        """
+        return self._trust_env
+
+    @property
+    def trace_configs(self) -> List[TraceConfig]:
+        """A list of TraceConfig instances used for client tracing"""
+        return self._trace_configs
+
+    def detach(self) -> None:
+        """Detach connector from session without closing the former.
+
+        Session is switched to closed state anyway.
+        """
+        self._connector = None
+
+    def __enter__(self) -> None:
+        raise TypeError("Use async with instead")
+
+    def __exit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc_val: Optional[BaseException],
+        exc_tb: Optional[TracebackType],
+    ) -> None:
+        # __exit__ should exist in pair with __enter__ but never executed
+        pass  # pragma: no cover
+
+    async def __aenter__(self) -> "ClientSession":
+        return self
+
+    async def __aexit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc_val: Optional[BaseException],
+        exc_tb: Optional[TracebackType],
+    ) -> None:
+        await self.close()
+
+
+class _BaseRequestContextManager(Coroutine[Any, Any, _RetType], Generic[_RetType]):
+
+    __slots__ = ("_coro", "_resp")
+
+    def __init__(self, coro: Coroutine["asyncio.Future[Any]", None, _RetType]) -> None:
+        self._coro = coro
+
+    def send(self, arg: None) -> "asyncio.Future[Any]":
+        return self._coro.send(arg)
+
+    def throw(self, *args: Any, **kwargs: Any) -> "asyncio.Future[Any]":
+        return self._coro.throw(*args, **kwargs)
+
+    def close(self) -> None:
+        return self._coro.close()
+
+    def __await__(self) -> Generator[Any, None, _RetType]:
+        ret = self._coro.__await__()
+        return ret
+
+    def __iter__(self) -> Generator[Any, None, _RetType]:
+        return self.__await__()
+
+    async def __aenter__(self) -> _RetType:
+        self._resp = await self._coro
+        return self._resp
+
+
+class _RequestContextManager(_BaseRequestContextManager[ClientResponse]):
+    __slots__ = ()
+
+    async def __aexit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc: Optional[BaseException],
+        tb: Optional[TracebackType],
+    ) -> None:
+        # We're basing behavior on the exception as it can be caused by
+        # user code unrelated to the status of the connection.  If you
+        # would like to close a connection you must do that
+        # explicitly.  Otherwise connection error handling should kick in
+        # and close/recycle the connection as required.
+        self._resp.release()
+        await self._resp.wait_for_close()
+
+
+class _WSRequestContextManager(_BaseRequestContextManager[ClientWebSocketResponse]):
+    __slots__ = ()
+
+    async def __aexit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc: Optional[BaseException],
+        tb: Optional[TracebackType],
+    ) -> None:
+        await self._resp.close()
+
+
+class _SessionRequestContextManager:
+
+    __slots__ = ("_coro", "_resp", "_session")
+
+    def __init__(
+        self,
+        coro: Coroutine["asyncio.Future[Any]", None, ClientResponse],
+        session: ClientSession,
+    ) -> None:
+        self._coro = coro
+        self._resp: Optional[ClientResponse] = None
+        self._session = session
+
+    async def __aenter__(self) -> ClientResponse:
+        try:
+            self._resp = await self._coro
+        except BaseException:
+            await self._session.close()
+            raise
+        else:
+            return self._resp
+
+    async def __aexit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc: Optional[BaseException],
+        tb: Optional[TracebackType],
+    ) -> None:
+        assert self._resp is not None
+        self._resp.close()
+        await self._session.close()
+
+
+def request(
+    method: str,
+    url: StrOrURL,
+    *,
+    params: Optional[Mapping[str, str]] = None,
+    data: Any = None,
+    json: Any = None,
+    headers: Optional[LooseHeaders] = None,
+    skip_auto_headers: Optional[Iterable[str]] = None,
+    auth: Optional[BasicAuth] = None,
+    allow_redirects: bool = True,
+    max_redirects: int = 10,
+    compress: Optional[str] = None,
+    chunked: Optional[bool] = None,
+    expect100: bool = False,
+    raise_for_status: Optional[bool] = None,
+    read_until_eof: bool = True,
+    proxy: Optional[StrOrURL] = None,
+    proxy_auth: Optional[BasicAuth] = None,
+    timeout: Union[ClientTimeout, object] = sentinel,
+    cookies: Optional[LooseCookies] = None,
+    version: HttpVersion = http.HttpVersion11,
+    connector: Optional[BaseConnector] = None,
+    read_bufsize: Optional[int] = None,
+    loop: Optional[asyncio.AbstractEventLoop] = None,
+    max_line_size: int = 8190,
+    max_field_size: int = 8190,
+) -> _SessionRequestContextManager:
+    """Constructs and sends a request.
+
+    Returns response object.
+    method - HTTP method
+    url - request url
+    params - (optional) Dictionary or bytes to be sent in the query
+      string of the new request
+    data - (optional) Dictionary, bytes, or file-like object to
+      send in the body of the request
+    json - (optional) Any json compatible python object
+    headers - (optional) Dictionary of HTTP Headers to send with
+      the request
+    cookies - (optional) Dict object to send with the request
+    auth - (optional) BasicAuth named tuple represent HTTP Basic Auth
+    auth - aiohttp.helpers.BasicAuth
+    allow_redirects - (optional) If set to False, do not follow
+      redirects
+    version - Request HTTP version.
+    compress - Set to True if request has to be compressed
+       with deflate encoding.
+    chunked - Set to chunk size for chunked transfer encoding.
+    expect100 - Expect 100-continue response from server.
+    connector - BaseConnector sub-class instance to support
+       connection pooling.
+    read_until_eof - Read response until eof if response
+       does not have Content-Length header.
+    loop - Optional event loop.
+    timeout - Optional ClientTimeout settings structure, 5min
+       total timeout by default.
+    Usage::
+      >>> import aiohttp
+      >>> resp = await aiohttp.request('GET', 'http://python.org/')
+      >>> resp
+      <ClientResponse(python.org/) [200]>
+      >>> data = await resp.read()
+    """
+    connector_owner = False
+    if connector is None:
+        connector_owner = True
+        connector = TCPConnector(loop=loop, force_close=True)
+
+    session = ClientSession(
+        loop=loop,
+        cookies=cookies,
+        version=version,
+        timeout=timeout,
+        connector=connector,
+        connector_owner=connector_owner,
+    )
+
+    return _SessionRequestContextManager(
+        session._request(
+            method,
+            url,
+            params=params,
+            data=data,
+            json=json,
+            headers=headers,
+            skip_auto_headers=skip_auto_headers,
+            auth=auth,
+            allow_redirects=allow_redirects,
+            max_redirects=max_redirects,
+            compress=compress,
+            chunked=chunked,
+            expect100=expect100,
+            raise_for_status=raise_for_status,
+            read_until_eof=read_until_eof,
+            proxy=proxy,
+            proxy_auth=proxy_auth,
+            read_bufsize=read_bufsize,
+            max_line_size=max_line_size,
+            max_field_size=max_field_size,
+        ),
+        session,
+    )

venv/lib/python3.10/site-packages/aiohttp/client_exceptions.py

@@ -0,0 +1,346 @@
+"""HTTP related errors."""
+
+import asyncio
+import warnings
+from typing import TYPE_CHECKING, Any, Optional, Tuple, Union
+
+from .http_parser import RawResponseMessage
+from .typedefs import LooseHeaders
+
+try:
+    import ssl
+
+    SSLContext = ssl.SSLContext
+except ImportError:  # pragma: no cover
+    ssl = SSLContext = None  # type: ignore[assignment]
+
+
+if TYPE_CHECKING:
+    from .client_reqrep import ClientResponse, ConnectionKey, Fingerprint, RequestInfo
+else:
+    RequestInfo = ClientResponse = ConnectionKey = None
+
+__all__ = (
+    "ClientError",
+    "ClientConnectionError",
+    "ClientOSError",
+    "ClientConnectorError",
+    "ClientProxyConnectionError",
+    "ClientSSLError",
+    "ClientConnectorSSLError",
+    "ClientConnectorCertificateError",
+    "ServerConnectionError",
+    "ServerTimeoutError",
+    "ServerDisconnectedError",
+    "ServerFingerprintMismatch",
+    "ClientResponseError",
+    "ClientHttpProxyError",
+    "WSServerHandshakeError",
+    "ContentTypeError",
+    "ClientPayloadError",
+    "InvalidURL",
+)
+
+
+class ClientError(Exception):
+    """Base class for client connection errors."""
+
+
+class ClientResponseError(ClientError):
+    """Base class for exceptions that occur after getting a response.
+
+    request_info: An instance of RequestInfo.
+    history: A sequence of responses, if redirects occurred.
+    status: HTTP status code.
+    message: Error message.
+    headers: Response headers.
+    """
+
+    def __init__(
+        self,
+        request_info: RequestInfo,
+        history: Tuple[ClientResponse, ...],
+        *,
+        code: Optional[int] = None,
+        status: Optional[int] = None,
+        message: str = "",
+        headers: Optional[LooseHeaders] = None,
+    ) -> None:
+        self.request_info = request_info
+        if code is not None:
+            if status is not None:
+                raise ValueError(
+                    "Both code and status arguments are provided; "
+                    "code is deprecated, use status instead"
+                )
+            warnings.warn(
+                "code argument is deprecated, use status instead",
+                DeprecationWarning,
+                stacklevel=2,
+            )
+        if status is not None:
+            self.status = status
+        elif code is not None:
+            self.status = code
+        else:
+            self.status = 0
+        self.message = message
+        self.headers = headers
+        self.history = history
+        self.args = (request_info, history)
+
+    def __str__(self) -> str:
+        return "{}, message={!r}, url={!r}".format(
+            self.status,
+            self.message,
+            self.request_info.real_url,
+        )
+
+    def __repr__(self) -> str:
+        args = f"{self.request_info!r}, {self.history!r}"
+        if self.status != 0:
+            args += f", status={self.status!r}"
+        if self.message != "":
+            args += f", message={self.message!r}"
+        if self.headers is not None:
+            args += f", headers={self.headers!r}"
+        return f"{type(self).__name__}({args})"
+
+    @property
+    def code(self) -> int:
+        warnings.warn(
+            "code property is deprecated, use status instead",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        return self.status
+
+    @code.setter
+    def code(self, value: int) -> None:
+        warnings.warn(
+            "code property is deprecated, use status instead",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        self.status = value
+
+
+class ContentTypeError(ClientResponseError):
+    """ContentType found is not valid."""
+
+
+class WSServerHandshakeError(ClientResponseError):
+    """websocket server handshake error."""
+
+
+class ClientHttpProxyError(ClientResponseError):
+    """HTTP proxy error.
+
+    Raised in :class:`aiohttp.connector.TCPConnector` if
+    proxy responds with status other than ``200 OK``
+    on ``CONNECT`` request.
+    """
+
+
+class TooManyRedirects(ClientResponseError):
+    """Client was redirected too many times."""
+
+
+class ClientConnectionError(ClientError):
+    """Base class for client socket errors."""
+
+
+class ClientOSError(ClientConnectionError, OSError):
+    """OSError error."""
+
+
+class ClientConnectorError(ClientOSError):
+    """Client connector error.
+
+    Raised in :class:`aiohttp.connector.TCPConnector` if
+        a connection can not be established.
+    """
+
+    def __init__(self, connection_key: ConnectionKey, os_error: OSError) -> None:
+        self._conn_key = connection_key
+        self._os_error = os_error
+        super().__init__(os_error.errno, os_error.strerror)
+        self.args = (connection_key, os_error)
+
+    @property
+    def os_error(self) -> OSError:
+        return self._os_error
+
+    @property
+    def host(self) -> str:
+        return self._conn_key.host
+
+    @property
+    def port(self) -> Optional[int]:
+        return self._conn_key.port
+
+    @property
+    def ssl(self) -> Union[SSLContext, bool, "Fingerprint"]:
+        return self._conn_key.ssl
+
+    def __str__(self) -> str:
+        return "Cannot connect to host {0.host}:{0.port} ssl:{1} [{2}]".format(
+            self, "default" if self.ssl is True else self.ssl, self.strerror
+        )
+
+    # OSError.__reduce__ does too much black magick
+    __reduce__ = BaseException.__reduce__
+
+
+class ClientProxyConnectionError(ClientConnectorError):
+    """Proxy connection error.
+
+    Raised in :class:`aiohttp.connector.TCPConnector` if
+        connection to proxy can not be established.
+    """
+
+
+class UnixClientConnectorError(ClientConnectorError):
+    """Unix connector error.
+
+    Raised in :py:class:`aiohttp.connector.UnixConnector`
+    if connection to unix socket can not be established.
+    """
+
+    def __init__(
+        self, path: str, connection_key: ConnectionKey, os_error: OSError
+    ) -> None:
+        self._path = path
+        super().__init__(connection_key, os_error)
+
+    @property
+    def path(self) -> str:
+        return self._path
+
+    def __str__(self) -> str:
+        return "Cannot connect to unix socket {0.path} ssl:{1} [{2}]".format(
+            self, "default" if self.ssl is True else self.ssl, self.strerror
+        )
+
+
+class ServerConnectionError(ClientConnectionError):
+    """Server connection errors."""
+
+
+class ServerDisconnectedError(ServerConnectionError):
+    """Server disconnected."""
+
+    def __init__(self, message: Union[RawResponseMessage, str, None] = None) -> None:
+        if message is None:
+            message = "Server disconnected"
+
+        self.args = (message,)
+        self.message = message
+
+
+class ServerTimeoutError(ServerConnectionError, asyncio.TimeoutError):
+    """Server timeout error."""
+
+
+class ServerFingerprintMismatch(ServerConnectionError):
+    """SSL certificate does not match expected fingerprint."""
+
+    def __init__(self, expected: bytes, got: bytes, host: str, port: int) -> None:
+        self.expected = expected
+        self.got = got
+        self.host = host
+        self.port = port
+        self.args = (expected, got, host, port)
+
+    def __repr__(self) -> str:
+        return "<{} expected={!r} got={!r} host={!r} port={!r}>".format(
+            self.__class__.__name__, self.expected, self.got, self.host, self.port
+        )
+
+
+class ClientPayloadError(ClientError):
+    """Response payload error."""
+
+
+class InvalidURL(ClientError, ValueError):
+    """Invalid URL.
+
+    URL used for fetching is malformed, e.g. it doesn't contains host
+    part.
+    """
+
+    # Derive from ValueError for backward compatibility
+
+    def __init__(self, url: Any) -> None:
+        # The type of url is not yarl.URL because the exception can be raised
+        # on URL(url) call
+        super().__init__(url)
+
+    @property
+    def url(self) -> Any:
+        return self.args[0]
+
+    def __repr__(self) -> str:
+        return f"<{self.__class__.__name__} {self.url}>"
+
+
+class ClientSSLError(ClientConnectorError):
+    """Base error for ssl.*Errors."""
+
+
+if ssl is not None:
+    cert_errors = (ssl.CertificateError,)
+    cert_errors_bases = (
+        ClientSSLError,
+        ssl.CertificateError,
+    )
+
+    ssl_errors = (ssl.SSLError,)
+    ssl_error_bases = (ClientSSLError, ssl.SSLError)
+else:  # pragma: no cover
+    cert_errors = tuple()
+    cert_errors_bases = (
+        ClientSSLError,
+        ValueError,
+    )
+
+    ssl_errors = tuple()
+    ssl_error_bases = (ClientSSLError,)
+
+
+class ClientConnectorSSLError(*ssl_error_bases):  # type: ignore[misc]
+    """Response ssl error."""
+
+
+class ClientConnectorCertificateError(*cert_errors_bases):  # type: ignore[misc]
+    """Response certificate error."""
+
+    def __init__(
+        self, connection_key: ConnectionKey, certificate_error: Exception
+    ) -> None:
+        self._conn_key = connection_key
+        self._certificate_error = certificate_error
+        self.args = (connection_key, certificate_error)
+
+    @property
+    def certificate_error(self) -> Exception:
+        return self._certificate_error
+
+    @property
+    def host(self) -> str:
+        return self._conn_key.host
+
+    @property
+    def port(self) -> Optional[int]:
+        return self._conn_key.port
+
+    @property
+    def ssl(self) -> bool:
+        return self._conn_key.is_ssl
+
+    def __str__(self) -> str:
+        return (
+            "Cannot connect to host {0.host}:{0.port} ssl:{0.ssl} "
+            "[{0.certificate_error.__class__.__name__}: "
+            "{0.certificate_error.args}]".format(self)
+        )

venv/lib/python3.10/site-packages/aiohttp/client_proto.py

@@ -0,0 +1,296 @@
+import asyncio
+from contextlib import suppress
+from typing import Any, Optional, Tuple
+
+from .base_protocol import BaseProtocol
+from .client_exceptions import (
+    ClientOSError,
+    ClientPayloadError,
+    ServerDisconnectedError,
+    ServerTimeoutError,
+)
+from .helpers import (
+    _EXC_SENTINEL,
+    BaseTimerContext,
+    set_exception,
+    status_code_must_be_empty_body,
+)
+from .http import HttpResponseParser, RawResponseMessage
+from .http_exceptions import HttpProcessingError
+from .streams import EMPTY_PAYLOAD, DataQueue, StreamReader
+
+
+class ResponseHandler(BaseProtocol, DataQueue[Tuple[RawResponseMessage, StreamReader]]):
+    """Helper class to adapt between Protocol and StreamReader."""
+
+    def __init__(self, loop: asyncio.AbstractEventLoop) -> None:
+        BaseProtocol.__init__(self, loop=loop)
+        DataQueue.__init__(self, loop)
+
+        self._should_close = False
+
+        self._payload: Optional[StreamReader] = None
+        self._skip_payload = False
+        self._payload_parser = None
+
+        self._timer = None
+
+        self._tail = b""
+        self._upgraded = False
+        self._parser: Optional[HttpResponseParser] = None
+
+        self._read_timeout: Optional[float] = None
+        self._read_timeout_handle: Optional[asyncio.TimerHandle] = None
+
+        self._timeout_ceil_threshold: Optional[float] = 5
+
+    @property
+    def upgraded(self) -> bool:
+        return self._upgraded
+
+    @property
+    def should_close(self) -> bool:
+        if self._payload is not None and not self._payload.is_eof() or self._upgraded:
+            return True
+
+        return (
+            self._should_close
+            or self._upgraded
+            or self.exception() is not None
+            or self._payload_parser is not None
+            or len(self) > 0
+            or bool(self._tail)
+        )
+
+    def force_close(self) -> None:
+        self._should_close = True
+
+    def close(self) -> None:
+        transport = self.transport
+        if transport is not None:
+            transport.close()
+            self.transport = None
+            self._payload = None
+            self._drop_timeout()
+
+    def is_connected(self) -> bool:
+        return self.transport is not None and not self.transport.is_closing()
+
+    def connection_lost(self, exc: Optional[BaseException]) -> None:
+        self._drop_timeout()
+
+        original_connection_error = exc
+        reraised_exc = original_connection_error
+
+        connection_closed_cleanly = original_connection_error is None
+
+        if self._payload_parser is not None:
+            with suppress(Exception):  # FIXME: log this somehow?
+                self._payload_parser.feed_eof()
+
+        uncompleted = None
+        if self._parser is not None:
+            try:
+                uncompleted = self._parser.feed_eof()
+            except Exception as underlying_exc:
+                if self._payload is not None:
+                    client_payload_exc_msg = (
+                        f"Response payload is not completed: {underlying_exc !r}"
+                    )
+                    if not connection_closed_cleanly:
+                        client_payload_exc_msg = (
+                            f"{client_payload_exc_msg !s}. "
+                            f"{original_connection_error !r}"
+                        )
+                    set_exception(
+                        self._payload,
+                        ClientPayloadError(client_payload_exc_msg),
+                        underlying_exc,
+                    )
+
+        if not self.is_eof():
+            if isinstance(original_connection_error, OSError):
+                reraised_exc = ClientOSError(*original_connection_error.args)
+            if connection_closed_cleanly:
+                reraised_exc = ServerDisconnectedError(uncompleted)
+            # assigns self._should_close to True as side effect,
+            # we do it anyway below
+            underlying_non_eof_exc = (
+                _EXC_SENTINEL
+                if connection_closed_cleanly
+                else original_connection_error
+            )
+            assert underlying_non_eof_exc is not None
+            assert reraised_exc is not None
+            self.set_exception(reraised_exc, underlying_non_eof_exc)
+
+        self._should_close = True
+        self._parser = None
+        self._payload = None
+        self._payload_parser = None
+        self._reading_paused = False
+
+        super().connection_lost(reraised_exc)
+
+    def eof_received(self) -> None:
+        # should call parser.feed_eof() most likely
+        self._drop_timeout()
+
+    def pause_reading(self) -> None:
+        super().pause_reading()
+        self._drop_timeout()
+
+    def resume_reading(self) -> None:
+        super().resume_reading()
+        self._reschedule_timeout()
+
+    def set_exception(
+        self,
+        exc: BaseException,
+        exc_cause: BaseException = _EXC_SENTINEL,
+    ) -> None:
+        self._should_close = True
+        self._drop_timeout()
+        super().set_exception(exc, exc_cause)
+
+    def set_parser(self, parser: Any, payload: Any) -> None:
+        # TODO: actual types are:
+        #   parser: WebSocketReader
+        #   payload: FlowControlDataQueue
+        # but they are not generi enough
+        # Need an ABC for both types
+        self._payload = payload
+        self._payload_parser = parser
+
+        self._drop_timeout()
+
+        if self._tail:
+            data, self._tail = self._tail, b""
+            self.data_received(data)
+
+    def set_response_params(
+        self,
+        *,
+        timer: Optional[BaseTimerContext] = None,
+        skip_payload: bool = False,
+        read_until_eof: bool = False,
+        auto_decompress: bool = True,
+        read_timeout: Optional[float] = None,
+        read_bufsize: int = 2**16,
+        timeout_ceil_threshold: float = 5,
+        max_line_size: int = 8190,
+        max_field_size: int = 8190,
+    ) -> None:
+        self._skip_payload = skip_payload
+
+        self._read_timeout = read_timeout
+
+        self._timeout_ceil_threshold = timeout_ceil_threshold
+
+        self._parser = HttpResponseParser(
+            self,
+            self._loop,
+            read_bufsize,
+            timer=timer,
+            payload_exception=ClientPayloadError,
+            response_with_body=not skip_payload,
+            read_until_eof=read_until_eof,
+            auto_decompress=auto_decompress,
+            max_line_size=max_line_size,
+            max_field_size=max_field_size,
+        )
+
+        if self._tail:
+            data, self._tail = self._tail, b""
+            self.data_received(data)
+
+    def _drop_timeout(self) -> None:
+        if self._read_timeout_handle is not None:
+            self._read_timeout_handle.cancel()
+            self._read_timeout_handle = None
+
+    def _reschedule_timeout(self) -> None:
+        timeout = self._read_timeout
+        if self._read_timeout_handle is not None:
+            self._read_timeout_handle.cancel()
+
+        if timeout:
+            self._read_timeout_handle = self._loop.call_later(
+                timeout, self._on_read_timeout
+            )
+        else:
+            self._read_timeout_handle = None
+
+    def start_timeout(self) -> None:
+        self._reschedule_timeout()
+
+    def _on_read_timeout(self) -> None:
+        exc = ServerTimeoutError("Timeout on reading data from socket")
+        self.set_exception(exc)
+        if self._payload is not None:
+            set_exception(self._payload, exc)
+
+    def data_received(self, data: bytes) -> None:
+        self._reschedule_timeout()
+
+        if not data:
+            return
+
+        # custom payload parser
+        if self._payload_parser is not None:
+            eof, tail = self._payload_parser.feed_data(data)
+            if eof:
+                self._payload = None
+                self._payload_parser = None
+
+                if tail:
+                    self.data_received(tail)
+            return
+        else:
+            if self._upgraded or self._parser is None:
+                # i.e. websocket connection, websocket parser is not set yet
+                self._tail += data
+            else:
+                # parse http messages
+                try:
+                    messages, upgraded, tail = self._parser.feed_data(data)
+                except BaseException as underlying_exc:
+                    if self.transport is not None:
+                        # connection.release() could be called BEFORE
+                        # data_received(), the transport is already
+                        # closed in this case
+                        self.transport.close()
+                    # should_close is True after the call
+                    self.set_exception(HttpProcessingError(), underlying_exc)
+                    return
+
+                self._upgraded = upgraded
+
+                payload: Optional[StreamReader] = None
+                for message, payload in messages:
+                    if message.should_close:
+                        self._should_close = True
+
+                    self._payload = payload
+
+                    if self._skip_payload or status_code_must_be_empty_body(
+                        message.code
+                    ):
+                        self.feed_data((message, EMPTY_PAYLOAD), 0)
+                    else:
+                        self.feed_data((message, payload), 0)
+                if payload is not None:
+                    # new message(s) was processed
+                    # register timeout handler unsubscribing
+                    # either on end-of-stream or immediately for
+                    # EMPTY_PAYLOAD
+                    if payload is not EMPTY_PAYLOAD:
+                        payload.on_eof(self._drop_timeout)
+                    else:
+                        self._drop_timeout()
+
+                if tail:
+                    if upgraded:
+                        self.data_received(tail)
+                    else:
+                        self._tail = tail

venv/lib/python3.10/site-packages/aiohttp/client_reqrep.py

@@ -0,0 +1,1207 @@
+import asyncio
+import codecs
+import contextlib
+import functools
+import io
+import re
+import sys
+import traceback
+import warnings
+from hashlib import md5, sha1, sha256
+from http.cookies import CookieError, Morsel, SimpleCookie
+from types import MappingProxyType, TracebackType
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Callable,
+    Dict,
+    Iterable,
+    List,
+    Mapping,
+    Optional,
+    Tuple,
+    Type,
+    Union,
+    cast,
+)
+
+import attr
+from multidict import CIMultiDict, CIMultiDictProxy, MultiDict, MultiDictProxy
+from yarl import URL
+
+from . import hdrs, helpers, http, multipart, payload
+from .abc import AbstractStreamWriter
+from .client_exceptions import (
+    ClientConnectionError,
+    ClientOSError,
+    ClientResponseError,
+    ContentTypeError,
+    InvalidURL,
+    ServerFingerprintMismatch,
+)
+from .compression_utils import HAS_BROTLI
+from .formdata import FormData
+from .helpers import (
+    BaseTimerContext,
+    BasicAuth,
+    HeadersMixin,
+    TimerNoop,
+    basicauth_from_netrc,
+    netrc_from_env,
+    noop,
+    reify,
+    set_exception,
+    set_result,
+)
+from .http import (
+    SERVER_SOFTWARE,
+    HttpVersion,
+    HttpVersion10,
+    HttpVersion11,
+    StreamWriter,
+)
+from .log import client_logger
+from .streams import StreamReader
+from .typedefs import (
+    DEFAULT_JSON_DECODER,
+    JSONDecoder,
+    LooseCookies,
+    LooseHeaders,
+    RawHeaders,
+)
+
+try:
+    import ssl
+    from ssl import SSLContext
+except ImportError:  # pragma: no cover
+    ssl = None  # type: ignore[assignment]
+    SSLContext = object  # type: ignore[misc,assignment]
+
+
+__all__ = ("ClientRequest", "ClientResponse", "RequestInfo", "Fingerprint")
+
+
+if TYPE_CHECKING:
+    from .client import ClientSession
+    from .connector import Connection
+    from .tracing import Trace
+
+
+_CONTAINS_CONTROL_CHAR_RE = re.compile(r"[^-!#$%&'*+.^_`|~0-9a-zA-Z]")
+json_re = re.compile(r"^application/(?:[\w.+-]+?\+)?json")
+
+
+def _gen_default_accept_encoding() -> str:
+    return "gzip, deflate, br" if HAS_BROTLI else "gzip, deflate"
+
+
+@attr.s(auto_attribs=True, frozen=True, slots=True)
+class ContentDisposition:
+    type: Optional[str]
+    parameters: "MappingProxyType[str, str]"
+    filename: Optional[str]
+
+
+@attr.s(auto_attribs=True, frozen=True, slots=True)
+class RequestInfo:
+    url: URL
+    method: str
+    headers: "CIMultiDictProxy[str]"
+    real_url: URL = attr.ib()
+
+    @real_url.default
+    def real_url_default(self) -> URL:
+        return self.url
+
+
+class Fingerprint:
+    HASHFUNC_BY_DIGESTLEN = {
+        16: md5,
+        20: sha1,
+        32: sha256,
+    }
+
+    def __init__(self, fingerprint: bytes) -> None:
+        digestlen = len(fingerprint)
+        hashfunc = self.HASHFUNC_BY_DIGESTLEN.get(digestlen)
+        if not hashfunc:
+            raise ValueError("fingerprint has invalid length")
+        elif hashfunc is md5 or hashfunc is sha1:
+            raise ValueError(
+                "md5 and sha1 are insecure and " "not supported. Use sha256."
+            )
+        self._hashfunc = hashfunc
+        self._fingerprint = fingerprint
+
+    @property
+    def fingerprint(self) -> bytes:
+        return self._fingerprint
+
+    def check(self, transport: asyncio.Transport) -> None:
+        if not transport.get_extra_info("sslcontext"):
+            return
+        sslobj = transport.get_extra_info("ssl_object")
+        cert = sslobj.getpeercert(binary_form=True)
+        got = self._hashfunc(cert).digest()
+        if got != self._fingerprint:
+            host, port, *_ = transport.get_extra_info("peername")
+            raise ServerFingerprintMismatch(self._fingerprint, got, host, port)
+
+
+if ssl is not None:
+    SSL_ALLOWED_TYPES = (ssl.SSLContext, bool, Fingerprint, type(None))
+else:  # pragma: no cover
+    SSL_ALLOWED_TYPES = (bool, type(None))
+
+
+def _merge_ssl_params(
+    ssl: Union["SSLContext", bool, Fingerprint],
+    verify_ssl: Optional[bool],
+    ssl_context: Optional["SSLContext"],
+    fingerprint: Optional[bytes],
+) -> Union["SSLContext", bool, Fingerprint]:
+    if ssl is None:
+        ssl = True  # Double check for backwards compatibility
+    if verify_ssl is not None and not verify_ssl:
+        warnings.warn(
+            "verify_ssl is deprecated, use ssl=False instead",
+            DeprecationWarning,
+            stacklevel=3,
+        )
+        if ssl is not True:
+            raise ValueError(
+                "verify_ssl, ssl_context, fingerprint and ssl "
+                "parameters are mutually exclusive"
+            )
+        else:
+            ssl = False
+    if ssl_context is not None:
+        warnings.warn(
+            "ssl_context is deprecated, use ssl=context instead",
+            DeprecationWarning,
+            stacklevel=3,
+        )
+        if ssl is not True:
+            raise ValueError(
+                "verify_ssl, ssl_context, fingerprint and ssl "
+                "parameters are mutually exclusive"
+            )
+        else:
+            ssl = ssl_context
+    if fingerprint is not None:
+        warnings.warn(
+            "fingerprint is deprecated, " "use ssl=Fingerprint(fingerprint) instead",
+            DeprecationWarning,
+            stacklevel=3,
+        )
+        if ssl is not True:
+            raise ValueError(
+                "verify_ssl, ssl_context, fingerprint and ssl "
+                "parameters are mutually exclusive"
+            )
+        else:
+            ssl = Fingerprint(fingerprint)
+    if not isinstance(ssl, SSL_ALLOWED_TYPES):
+        raise TypeError(
+            "ssl should be SSLContext, bool, Fingerprint or None, "
+            "got {!r} instead.".format(ssl)
+        )
+    return ssl
+
+
+@attr.s(auto_attribs=True, slots=True, frozen=True)
+class ConnectionKey:
+    # the key should contain an information about used proxy / TLS
+    # to prevent reusing wrong connections from a pool
+    host: str
+    port: Optional[int]
+    is_ssl: bool
+    ssl: Union[SSLContext, bool, Fingerprint]
+    proxy: Optional[URL]
+    proxy_auth: Optional[BasicAuth]
+    proxy_headers_hash: Optional[int]  # hash(CIMultiDict)
+
+
+def _is_expected_content_type(
+    response_content_type: str, expected_content_type: str
+) -> bool:
+    if expected_content_type == "application/json":
+        return json_re.match(response_content_type) is not None
+    return expected_content_type in response_content_type
+
+
+class ClientRequest:
+    GET_METHODS = {
+        hdrs.METH_GET,
+        hdrs.METH_HEAD,
+        hdrs.METH_OPTIONS,
+        hdrs.METH_TRACE,
+    }
+    POST_METHODS = {hdrs.METH_PATCH, hdrs.METH_POST, hdrs.METH_PUT}
+    ALL_METHODS = GET_METHODS.union(POST_METHODS).union({hdrs.METH_DELETE})
+
+    DEFAULT_HEADERS = {
+        hdrs.ACCEPT: "*/*",
+        hdrs.ACCEPT_ENCODING: _gen_default_accept_encoding(),
+    }
+
+    body = b""
+    auth = None
+    response = None
+
+    __writer = None  # async task for streaming data
+    _continue = None  # waiter future for '100 Continue' response
+
+    # N.B.
+    # Adding __del__ method with self._writer closing doesn't make sense
+    # because _writer is instance method, thus it keeps a reference to self.
+    # Until writer has finished finalizer will not be called.
+
+    def __init__(
+        self,
+        method: str,
+        url: URL,
+        *,
+        params: Optional[Mapping[str, str]] = None,
+        headers: Optional[LooseHeaders] = None,
+        skip_auto_headers: Iterable[str] = frozenset(),
+        data: Any = None,
+        cookies: Optional[LooseCookies] = None,
+        auth: Optional[BasicAuth] = None,
+        version: http.HttpVersion = http.HttpVersion11,
+        compress: Optional[str] = None,
+        chunked: Optional[bool] = None,
+        expect100: bool = False,
+        loop: Optional[asyncio.AbstractEventLoop] = None,
+        response_class: Optional[Type["ClientResponse"]] = None,
+        proxy: Optional[URL] = None,
+        proxy_auth: Optional[BasicAuth] = None,
+        timer: Optional[BaseTimerContext] = None,
+        session: Optional["ClientSession"] = None,
+        ssl: Union[SSLContext, bool, Fingerprint] = True,
+        proxy_headers: Optional[LooseHeaders] = None,
+        traces: Optional[List["Trace"]] = None,
+        trust_env: bool = False,
+        server_hostname: Optional[str] = None,
+    ):
+        if loop is None:
+            loop = asyncio.get_event_loop()
+
+        match = _CONTAINS_CONTROL_CHAR_RE.search(method)
+        if match:
+            raise ValueError(
+                f"Method cannot contain non-token characters {method!r} "
+                "(found at least {match.group()!r})"
+            )
+
+        assert isinstance(url, URL), url
+        assert isinstance(proxy, (URL, type(None))), proxy
+        # FIXME: session is None in tests only, need to fix tests
+        # assert session is not None
+        self._session = cast("ClientSession", session)
+        if params:
+            q = MultiDict(url.query)
+            url2 = url.with_query(params)
+            q.extend(url2.query)
+            url = url.with_query(q)
+        self.original_url = url
+        self.url = url.with_fragment(None)
+        self.method = method.upper()
+        self.chunked = chunked
+        self.compress = compress
+        self.loop = loop
+        self.length = None
+        if response_class is None:
+            real_response_class = ClientResponse
+        else:
+            real_response_class = response_class
+        self.response_class: Type[ClientResponse] = real_response_class
+        self._timer = timer if timer is not None else TimerNoop()
+        self._ssl = ssl if ssl is not None else True
+        self.server_hostname = server_hostname
+
+        if loop.get_debug():
+            self._source_traceback = traceback.extract_stack(sys._getframe(1))
+
+        self.update_version(version)
+        self.update_host(url)
+        self.update_headers(headers)
+        self.update_auto_headers(skip_auto_headers)
+        self.update_cookies(cookies)
+        self.update_content_encoding(data)
+        self.update_auth(auth, trust_env)
+        self.update_proxy(proxy, proxy_auth, proxy_headers)
+
+        self.update_body_from_data(data)
+        if data is not None or self.method not in self.GET_METHODS:
+            self.update_transfer_encoding()
+        self.update_expect_continue(expect100)
+        if traces is None:
+            traces = []
+        self._traces = traces
+
+    def __reset_writer(self, _: object = None) -> None:
+        self.__writer = None
+
+    @property
+    def _writer(self) -> Optional["asyncio.Task[None]"]:
+        return self.__writer
+
+    @_writer.setter
+    def _writer(self, writer: Optional["asyncio.Task[None]"]) -> None:
+        if self.__writer is not None:
+            self.__writer.remove_done_callback(self.__reset_writer)
+        self.__writer = writer
+        if writer is not None:
+            writer.add_done_callback(self.__reset_writer)
+
+    def is_ssl(self) -> bool:
+        return self.url.scheme in ("https", "wss")
+
+    @property
+    def ssl(self) -> Union["SSLContext", bool, Fingerprint]:
+        return self._ssl
+
+    @property
+    def connection_key(self) -> ConnectionKey:
+        proxy_headers = self.proxy_headers
+        if proxy_headers:
+            h: Optional[int] = hash(tuple((k, v) for k, v in proxy_headers.items()))
+        else:
+            h = None
+        return ConnectionKey(
+            self.host,
+            self.port,
+            self.is_ssl(),
+            self.ssl,
+            self.proxy,
+            self.proxy_auth,
+            h,
+        )
+
+    @property
+    def host(self) -> str:
+        ret = self.url.raw_host
+        assert ret is not None
+        return ret
+
+    @property
+    def port(self) -> Optional[int]:
+        return self.url.port
+
+    @property
+    def request_info(self) -> RequestInfo:
+        headers: CIMultiDictProxy[str] = CIMultiDictProxy(self.headers)
+        return RequestInfo(self.url, self.method, headers, self.original_url)
+
+    def update_host(self, url: URL) -> None:
+        """Update destination host, port and connection type (ssl)."""
+        # get host/port
+        if not url.raw_host:
+            raise InvalidURL(url)
+
+        # basic auth info
+        username, password = url.user, url.password
+        if username:
+            self.auth = helpers.BasicAuth(username, password or "")
+
+    def update_version(self, version: Union[http.HttpVersion, str]) -> None:
+        """Convert request version to two elements tuple.
+
+        parser HTTP version '1.1' => (1, 1)
+        """
+        if isinstance(version, str):
+            v = [part.strip() for part in version.split(".", 1)]
+            try:
+                version = http.HttpVersion(int(v[0]), int(v[1]))
+            except ValueError:
+                raise ValueError(
+                    f"Can not parse http version number: {version}"
+                ) from None
+        self.version = version
+
+    def update_headers(self, headers: Optional[LooseHeaders]) -> None:
+        """Update request headers."""
+        self.headers: CIMultiDict[str] = CIMultiDict()
+
+        # add host
+        netloc = cast(str, self.url.raw_host)
+        if helpers.is_ipv6_address(netloc):
+            netloc = f"[{netloc}]"
+        # See https://github.com/aio-libs/aiohttp/issues/3636.
+        netloc = netloc.rstrip(".")
+        if self.url.port is not None and not self.url.is_default_port():
+            netloc += ":" + str(self.url.port)
+        self.headers[hdrs.HOST] = netloc
+
+        if headers:
+            if isinstance(headers, (dict, MultiDictProxy, MultiDict)):
+                headers = headers.items()  # type: ignore[assignment]
+
+            for key, value in headers:  # type: ignore[misc]
+                # A special case for Host header
+                if key.lower() == "host":
+                    self.headers[key] = value
+                else:
+                    self.headers.add(key, value)
+
+    def update_auto_headers(self, skip_auto_headers: Iterable[str]) -> None:
+        self.skip_auto_headers = CIMultiDict(
+            (hdr, None) for hdr in sorted(skip_auto_headers)
+        )
+        used_headers = self.headers.copy()
+        used_headers.extend(self.skip_auto_headers)  # type: ignore[arg-type]
+
+        for hdr, val in self.DEFAULT_HEADERS.items():
+            if hdr not in used_headers:
+                self.headers.add(hdr, val)
+
+        if hdrs.USER_AGENT not in used_headers:
+            self.headers[hdrs.USER_AGENT] = SERVER_SOFTWARE
+
+    def update_cookies(self, cookies: Optional[LooseCookies]) -> None:
+        """Update request cookies header."""
+        if not cookies:
+            return
+
+        c = SimpleCookie()
+        if hdrs.COOKIE in self.headers:
+            c.load(self.headers.get(hdrs.COOKIE, ""))
+            del self.headers[hdrs.COOKIE]
+
+        if isinstance(cookies, Mapping):
+            iter_cookies = cookies.items()
+        else:
+            iter_cookies = cookies  # type: ignore[assignment]
+        for name, value in iter_cookies:
+            if isinstance(value, Morsel):
+                # Preserve coded_value
+                mrsl_val = value.get(value.key, Morsel())
+                mrsl_val.set(value.key, value.value, value.coded_value)
+                c[name] = mrsl_val
+            else:
+                c[name] = value  # type: ignore[assignment]
+
+        self.headers[hdrs.COOKIE] = c.output(header="", sep=";").strip()
+
+    def update_content_encoding(self, data: Any) -> None:
+        """Set request content encoding."""
+        if data is None:
+            return
+
+        enc = self.headers.get(hdrs.CONTENT_ENCODING, "").lower()
+        if enc:
+            if self.compress:
+                raise ValueError(
+                    "compress can not be set " "if Content-Encoding header is set"
+                )
+        elif self.compress:
+            if not isinstance(self.compress, str):
+                self.compress = "deflate"
+            self.headers[hdrs.CONTENT_ENCODING] = self.compress
+            self.chunked = True  # enable chunked, no need to deal with length
+
+    def update_transfer_encoding(self) -> None:
+        """Analyze transfer-encoding header."""
+        te = self.headers.get(hdrs.TRANSFER_ENCODING, "").lower()
+
+        if "chunked" in te:
+            if self.chunked:
+                raise ValueError(
+                    "chunked can not be set "
+                    'if "Transfer-Encoding: chunked" header is set'
+                )
+
+        elif self.chunked:
+            if hdrs.CONTENT_LENGTH in self.headers:
+                raise ValueError(
+                    "chunked can not be set " "if Content-Length header is set"
+                )
+
+            self.headers[hdrs.TRANSFER_ENCODING] = "chunked"
+        else:
+            if hdrs.CONTENT_LENGTH not in self.headers:
+                self.headers[hdrs.CONTENT_LENGTH] = str(len(self.body))
+
+    def update_auth(self, auth: Optional[BasicAuth], trust_env: bool = False) -> None:
+        """Set basic auth."""
+        if auth is None:
+            auth = self.auth
+        if auth is None and trust_env and self.url.host is not None:
+            netrc_obj = netrc_from_env()
+            with contextlib.suppress(LookupError):
+                auth = basicauth_from_netrc(netrc_obj, self.url.host)
+        if auth is None:
+            return
+
+        if not isinstance(auth, helpers.BasicAuth):
+            raise TypeError("BasicAuth() tuple is required instead")
+
+        self.headers[hdrs.AUTHORIZATION] = auth.encode()
+
+    def update_body_from_data(self, body: Any) -> None:
+        if body is None:
+            return
+
+        # FormData
+        if isinstance(body, FormData):
+            body = body()
+
+        try:
+            body = payload.PAYLOAD_REGISTRY.get(body, disposition=None)
+        except payload.LookupError:
+            body = FormData(body)()
+
+        self.body = body
+
+        # enable chunked encoding if needed
+        if not self.chunked:
+            if hdrs.CONTENT_LENGTH not in self.headers:
+                size = body.size
+                if size is None:
+                    self.chunked = True
+                else:
+                    if hdrs.CONTENT_LENGTH not in self.headers:
+                        self.headers[hdrs.CONTENT_LENGTH] = str(size)
+
+        # copy payload headers
+        assert body.headers
+        for (key, value) in body.headers.items():
+            if key in self.headers:
+                continue
+            if key in self.skip_auto_headers:
+                continue
+            self.headers[key] = value
+
+    def update_expect_continue(self, expect: bool = False) -> None:
+        if expect:
+            self.headers[hdrs.EXPECT] = "100-continue"
+        elif self.headers.get(hdrs.EXPECT, "").lower() == "100-continue":
+            expect = True
+
+        if expect:
+            self._continue = self.loop.create_future()
+
+    def update_proxy(
+        self,
+        proxy: Optional[URL],
+        proxy_auth: Optional[BasicAuth],
+        proxy_headers: Optional[LooseHeaders],
+    ) -> None:
+        if proxy_auth and not isinstance(proxy_auth, helpers.BasicAuth):
+            raise ValueError("proxy_auth must be None or BasicAuth() tuple")
+        self.proxy = proxy
+        self.proxy_auth = proxy_auth
+        self.proxy_headers = proxy_headers
+
+    def keep_alive(self) -> bool:
+        if self.version < HttpVersion10:
+            # keep alive not supported at all
+            return False
+        if self.version == HttpVersion10:
+            if self.headers.get(hdrs.CONNECTION) == "keep-alive":
+                return True
+            else:  # no headers means we close for Http 1.0
+                return False
+        elif self.headers.get(hdrs.CONNECTION) == "close":
+            return False
+
+        return True
+
+    async def write_bytes(
+        self, writer: AbstractStreamWriter, conn: "Connection"
+    ) -> None:
+        """Support coroutines that yields bytes objects."""
+        # 100 response
+        if self._continue is not None:
+            try:
+                await writer.drain()
+                await self._continue
+            except asyncio.CancelledError:
+                return
+
+        protocol = conn.protocol
+        assert protocol is not None
+        try:
+            if isinstance(self.body, payload.Payload):
+                await self.body.write(writer)
+            else:
+                if isinstance(self.body, (bytes, bytearray)):
+                    self.body = (self.body,)  # type: ignore[assignment]
+
+                for chunk in self.body:
+                    await writer.write(chunk)  # type: ignore[arg-type]
+        except OSError as underlying_exc:
+            reraised_exc = underlying_exc
+
+            exc_is_not_timeout = underlying_exc.errno is not None or not isinstance(
+                underlying_exc, asyncio.TimeoutError
+            )
+            if exc_is_not_timeout:
+                reraised_exc = ClientOSError(
+                    underlying_exc.errno,
+                    f"Can not write request body for {self.url !s}",
+                )
+
+            set_exception(protocol, reraised_exc, underlying_exc)
+        except asyncio.CancelledError:
+            await writer.write_eof()
+        except Exception as underlying_exc:
+            set_exception(
+                protocol,
+                ClientConnectionError(
+                    f"Failed to send bytes into the underlying connection {conn !s}",
+                ),
+                underlying_exc,
+            )
+        else:
+            await writer.write_eof()
+            protocol.start_timeout()
+
+    async def send(self, conn: "Connection") -> "ClientResponse":
+        # Specify request target:
+        # - CONNECT request must send authority form URI
+        # - not CONNECT proxy must send absolute form URI
+        # - most common is origin form URI
+        if self.method == hdrs.METH_CONNECT:
+            connect_host = self.url.raw_host
+            assert connect_host is not None
+            if helpers.is_ipv6_address(connect_host):
+                connect_host = f"[{connect_host}]"
+            path = f"{connect_host}:{self.url.port}"
+        elif self.proxy and not self.is_ssl():
+            path = str(self.url)
+        else:
+            path = self.url.raw_path
+            if self.url.raw_query_string:
+                path += "?" + self.url.raw_query_string
+
+        protocol = conn.protocol
+        assert protocol is not None
+        writer = StreamWriter(
+            protocol,
+            self.loop,
+            on_chunk_sent=functools.partial(
+                self._on_chunk_request_sent, self.method, self.url
+            ),
+            on_headers_sent=functools.partial(
+                self._on_headers_request_sent, self.method, self.url
+            ),
+        )
+
+        if self.compress:
+            writer.enable_compression(self.compress)
+
+        if self.chunked is not None:
+            writer.enable_chunking()
+
+        # set default content-type
+        if (
+            self.method in self.POST_METHODS
+            and hdrs.CONTENT_TYPE not in self.skip_auto_headers
+            and hdrs.CONTENT_TYPE not in self.headers
+        ):
+            self.headers[hdrs.CONTENT_TYPE] = "application/octet-stream"
+
+        # set the connection header
+        connection = self.headers.get(hdrs.CONNECTION)
+        if not connection:
+            if self.keep_alive():
+                if self.version == HttpVersion10:
+                    connection = "keep-alive"
+            else:
+                if self.version == HttpVersion11:
+                    connection = "close"
+
+        if connection is not None:
+            self.headers[hdrs.CONNECTION] = connection
+
+        # status + headers
+        status_line = "{0} {1} HTTP/{v.major}.{v.minor}".format(
+            self.method, path, v=self.version
+        )
+        await writer.write_headers(status_line, self.headers)
+
+        self._writer = self.loop.create_task(self.write_bytes(writer, conn))
+
+        response_class = self.response_class
+        assert response_class is not None
+        self.response = response_class(
+            self.method,
+            self.original_url,
+            writer=self._writer,
+            continue100=self._continue,
+            timer=self._timer,
+            request_info=self.request_info,
+            traces=self._traces,
+            loop=self.loop,
+            session=self._session,
+        )
+        return self.response
+
+    async def close(self) -> None:
+        if self._writer is not None:
+            with contextlib.suppress(asyncio.CancelledError):
+                await self._writer
+
+    def terminate(self) -> None:
+        if self._writer is not None:
+            if not self.loop.is_closed():
+                self._writer.cancel()
+            self._writer.remove_done_callback(self.__reset_writer)
+            self._writer = None
+
+    async def _on_chunk_request_sent(self, method: str, url: URL, chunk: bytes) -> None:
+        for trace in self._traces:
+            await trace.send_request_chunk_sent(method, url, chunk)
+
+    async def _on_headers_request_sent(
+        self, method: str, url: URL, headers: "CIMultiDict[str]"
+    ) -> None:
+        for trace in self._traces:
+            await trace.send_request_headers(method, url, headers)
+
+
+class ClientResponse(HeadersMixin):
+
+    # Some of these attributes are None when created,
+    # but will be set by the start() method.
+    # As the end user will likely never see the None values, we cheat the types below.
+    # from the Status-Line of the response
+    version: Optional[HttpVersion] = None  # HTTP-Version
+    status: int = None  # type: ignore[assignment] # Status-Code
+    reason: Optional[str] = None  # Reason-Phrase
+
+    content: StreamReader = None  # type: ignore[assignment]  # Payload stream
+    _headers: CIMultiDictProxy[str] = None  # type: ignore[assignment]
+    _raw_headers: RawHeaders = None  # type: ignore[assignment]
+
+    _connection = None  # current connection
+    _source_traceback: Optional[traceback.StackSummary] = None
+    # set up by ClientRequest after ClientResponse object creation
+    # post-init stage allows to not change ctor signature
+    _closed = True  # to allow __del__ for non-initialized properly response
+    _released = False
+    __writer = None
+
+    def __init__(
+        self,
+        method: str,
+        url: URL,
+        *,
+        writer: "asyncio.Task[None]",
+        continue100: Optional["asyncio.Future[bool]"],
+        timer: BaseTimerContext,
+        request_info: RequestInfo,
+        traces: List["Trace"],
+        loop: asyncio.AbstractEventLoop,
+        session: "ClientSession",
+    ) -> None:
+        assert isinstance(url, URL)
+
+        self.method = method
+        self.cookies = SimpleCookie()
+
+        self._real_url = url
+        self._url = url.with_fragment(None)
+        self._body: Any = None
+        self._writer: Optional[asyncio.Task[None]] = writer
+        self._continue = continue100  # None by default
+        self._closed = True
+        self._history: Tuple[ClientResponse, ...] = ()
+        self._request_info = request_info
+        self._timer = timer if timer is not None else TimerNoop()
+        self._cache: Dict[str, Any] = {}
+        self._traces = traces
+        self._loop = loop
+        # store a reference to session #1985
+        self._session: Optional[ClientSession] = session
+        # Save reference to _resolve_charset, so that get_encoding() will still
+        # work after the response has finished reading the body.
+        if session is None:
+            # TODO: Fix session=None in tests (see ClientRequest.__init__).
+            self._resolve_charset: Callable[
+                ["ClientResponse", bytes], str
+            ] = lambda *_: "utf-8"
+        else:
+            self._resolve_charset = session._resolve_charset
+        if loop.get_debug():
+            self._source_traceback = traceback.extract_stack(sys._getframe(1))
+
+    def __reset_writer(self, _: object = None) -> None:
+        self.__writer = None
+
+    @property
+    def _writer(self) -> Optional["asyncio.Task[None]"]:
+        return self.__writer
+
+    @_writer.setter
+    def _writer(self, writer: Optional["asyncio.Task[None]"]) -> None:
+        if self.__writer is not None:
+            self.__writer.remove_done_callback(self.__reset_writer)
+        self.__writer = writer
+        if writer is not None:
+            writer.add_done_callback(self.__reset_writer)
+
+    @reify
+    def url(self) -> URL:
+        return self._url
+
+    @reify
+    def url_obj(self) -> URL:
+        warnings.warn("Deprecated, use .url #1654", DeprecationWarning, stacklevel=2)
+        return self._url
+
+    @reify
+    def real_url(self) -> URL:
+        return self._real_url
+
+    @reify
+    def host(self) -> str:
+        assert self._url.host is not None
+        return self._url.host
+
+    @reify
+    def headers(self) -> "CIMultiDictProxy[str]":
+        return self._headers
+
+    @reify
+    def raw_headers(self) -> RawHeaders:
+        return self._raw_headers
+
+    @reify
+    def request_info(self) -> RequestInfo:
+        return self._request_info
+
+    @reify
+    def content_disposition(self) -> Optional[ContentDisposition]:
+        raw = self._headers.get(hdrs.CONTENT_DISPOSITION)
+        if raw is None:
+            return None
+        disposition_type, params_dct = multipart.parse_content_disposition(raw)
+        params = MappingProxyType(params_dct)
+        filename = multipart.content_disposition_filename(params)
+        return ContentDisposition(disposition_type, params, filename)
+
+    def __del__(self, _warnings: Any = warnings) -> None:
+        if self._closed:
+            return
+
+        if self._connection is not None:
+            self._connection.release()
+            self._cleanup_writer()
+
+            if self._loop.get_debug():
+                kwargs = {"source": self}
+                _warnings.warn(f"Unclosed response {self!r}", ResourceWarning, **kwargs)
+                context = {"client_response": self, "message": "Unclosed response"}
+                if self._source_traceback:
+                    context["source_traceback"] = self._source_traceback
+                self._loop.call_exception_handler(context)
+
+    def __repr__(self) -> str:
+        out = io.StringIO()
+        ascii_encodable_url = str(self.url)
+        if self.reason:
+            ascii_encodable_reason = self.reason.encode(
+                "ascii", "backslashreplace"
+            ).decode("ascii")
+        else:
+            ascii_encodable_reason = "None"
+        print(
+            "<ClientResponse({}) [{} {}]>".format(
+                ascii_encodable_url, self.status, ascii_encodable_reason
+            ),
+            file=out,
+        )
+        print(self.headers, file=out)
+        return out.getvalue()
+
+    @property
+    def connection(self) -> Optional["Connection"]:
+        return self._connection
+
+    @reify
+    def history(self) -> Tuple["ClientResponse", ...]:
+        """A sequence of of responses, if redirects occurred."""
+        return self._history
+
+    @reify
+    def links(self) -> "MultiDictProxy[MultiDictProxy[Union[str, URL]]]":
+        links_str = ", ".join(self.headers.getall("link", []))
+
+        if not links_str:
+            return MultiDictProxy(MultiDict())
+
+        links: MultiDict[MultiDictProxy[Union[str, URL]]] = MultiDict()
+
+        for val in re.split(r",(?=\s*<)", links_str):
+            match = re.match(r"\s*<(.*)>(.*)", val)
+            if match is None:  # pragma: no cover
+                # the check exists to suppress mypy error
+                continue
+            url, params_str = match.groups()
+            params = params_str.split(";")[1:]
+
+            link: MultiDict[Union[str, URL]] = MultiDict()
+
+            for param in params:
+                match = re.match(r"^\s*(\S*)\s*=\s*(['\"]?)(.*?)(\2)\s*$", param, re.M)
+                if match is None:  # pragma: no cover
+                    # the check exists to suppress mypy error
+                    continue
+                key, _, value, _ = match.groups()
+
+                link.add(key, value)
+
+            key = link.get("rel", url)
+
+            link.add("url", self.url.join(URL(url)))
+
+            links.add(str(key), MultiDictProxy(link))
+
+        return MultiDictProxy(links)
+
+    async def start(self, connection: "Connection") -> "ClientResponse":
+        """Start response processing."""
+        self._closed = False
+        self._protocol = connection.protocol
+        self._connection = connection
+
+        with self._timer:
+            while True:
+                # read response
+                try:
+                    protocol = self._protocol
+                    message, payload = await protocol.read()  # type: ignore[union-attr]
+                except http.HttpProcessingError as exc:
+                    raise ClientResponseError(
+                        self.request_info,
+                        self.history,
+                        status=exc.code,
+                        message=exc.message,
+                        headers=exc.headers,
+                    ) from exc
+
+                if message.code < 100 or message.code > 199 or message.code == 101:
+                    break
+
+                if self._continue is not None:
+                    set_result(self._continue, True)
+                    self._continue = None
+
+        # payload eof handler
+        payload.on_eof(self._response_eof)
+
+        # response status
+        self.version = message.version
+        self.status = message.code
+        self.reason = message.reason
+
+        # headers
+        self._headers = message.headers  # type is CIMultiDictProxy
+        self._raw_headers = message.raw_headers  # type is Tuple[bytes, bytes]
+
+        # payload
+        self.content = payload
+
+        # cookies
+        for hdr in self.headers.getall(hdrs.SET_COOKIE, ()):
+            try:
+                self.cookies.load(hdr)
+            except CookieError as exc:
+                client_logger.warning("Can not load response cookies: %s", exc)
+        return self
+
+    def _response_eof(self) -> None:
+        if self._closed:
+            return
+
+        # protocol could be None because connection could be detached
+        protocol = self._connection and self._connection.protocol
+        if protocol is not None and protocol.upgraded:
+            return
+
+        self._closed = True
+        self._cleanup_writer()
+        self._release_connection()
+
+    @property
+    def closed(self) -> bool:
+        return self._closed
+
+    def close(self) -> None:
+        if not self._released:
+            self._notify_content()
+
+        self._closed = True
+        if self._loop is None or self._loop.is_closed():
+            return
+
+        self._cleanup_writer()
+        if self._connection is not None:
+            self._connection.close()
+            self._connection = None
+
+    def release(self) -> Any:
+        if not self._released:
+            self._notify_content()
+
+        self._closed = True
+
+        self._cleanup_writer()
+        self._release_connection()
+        return noop()
+
+    @property
+    def ok(self) -> bool:
+        """Returns ``True`` if ``status`` is less than ``400``, ``False`` if not.
+
+        This is **not** a check for ``200 OK`` but a check that the response
+        status is under 400.
+        """
+        return 400 > self.status
+
+    def raise_for_status(self) -> None:
+        if not self.ok:
+            # reason should always be not None for a started response
+            assert self.reason is not None
+            self.release()
+            raise ClientResponseError(
+                self.request_info,
+                self.history,
+                status=self.status,
+                message=self.reason,
+                headers=self.headers,
+            )
+
+    def _release_connection(self) -> None:
+        if self._connection is not None:
+            if self._writer is None:
+                self._connection.release()
+                self._connection = None
+            else:
+                self._writer.add_done_callback(lambda f: self._release_connection())
+
+    async def _wait_released(self) -> None:
+        if self._writer is not None:
+            await self._writer
+        self._release_connection()
+
+    def _cleanup_writer(self) -> None:
+        if self._writer is not None:
+            self._writer.cancel()
+        self._session = None
+
+    def _notify_content(self) -> None:
+        content = self.content
+        if content and content.exception() is None:
+            set_exception(content, ClientConnectionError("Connection closed"))
+        self._released = True
+
+    async def wait_for_close(self) -> None:
+        if self._writer is not None:
+            await self._writer
+        self.release()
+
+    async def read(self) -> bytes:
+        """Read response payload."""
+        if self._body is None:
+            try:
+                self._body = await self.content.read()
+                for trace in self._traces:
+                    await trace.send_response_chunk_received(
+                        self.method, self.url, self._body
+                    )
+            except BaseException:
+                self.close()
+                raise
+        elif self._released:  # Response explicitly released
+            raise ClientConnectionError("Connection closed")
+
+        protocol = self._connection and self._connection.protocol
+        if protocol is None or not protocol.upgraded:
+            await self._wait_released()  # Underlying connection released
+        return self._body  # type: ignore[no-any-return]
+
+    def get_encoding(self) -> str:
+        ctype = self.headers.get(hdrs.CONTENT_TYPE, "").lower()
+        mimetype = helpers.parse_mimetype(ctype)
+
+        encoding = mimetype.parameters.get("charset")
+        if encoding:
+            with contextlib.suppress(LookupError):
+                return codecs.lookup(encoding).name
+
+        if mimetype.type == "application" and (
+            mimetype.subtype == "json" or mimetype.subtype == "rdap"
+        ):
+            # RFC 7159 states that the default encoding is UTF-8.
+            # RFC 7483 defines application/rdap+json
+            return "utf-8"
+
+        if self._body is None:
+            raise RuntimeError(
+                "Cannot compute fallback encoding of a not yet read body"
+            )
+
+        return self._resolve_charset(self, self._body)
+
+    async def text(self, encoding: Optional[str] = None, errors: str = "strict") -> str:
+        """Read response payload and decode."""
+        if self._body is None:
+            await self.read()
+
+        if encoding is None:
+            encoding = self.get_encoding()
+
+        return self._body.decode(  # type: ignore[no-any-return,union-attr]
+            encoding, errors=errors
+        )
+
+    async def json(
+        self,
+        *,
+        encoding: Optional[str] = None,
+        loads: JSONDecoder = DEFAULT_JSON_DECODER,
+        content_type: Optional[str] = "application/json",
+    ) -> Any:
+        """Read and decodes JSON response."""
+        if self._body is None:
+            await self.read()
+
+        if content_type:
+            ctype = self.headers.get(hdrs.CONTENT_TYPE, "").lower()
+            if not _is_expected_content_type(ctype, content_type):
+                raise ContentTypeError(
+                    self.request_info,
+                    self.history,
+                    message=(
+                        "Attempt to decode JSON with " "unexpected mimetype: %s" % ctype
+                    ),
+                    headers=self.headers,
+                )
+
+        stripped = self._body.strip()  # type: ignore[union-attr]
+        if not stripped:
+            return None
+
+        if encoding is None:
+            encoding = self.get_encoding()
+
+        return loads(stripped.decode(encoding))
+
+    async def __aenter__(self) -> "ClientResponse":
+        return self
+
+    async def __aexit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc_val: Optional[BaseException],
+        exc_tb: Optional[TracebackType],
+    ) -> None:
+        # similar to _RequestContextManager, we do not need to check
+        # for exceptions, response object can close connection
+        # if state is broken
+        self.release()
+        await self.wait_for_close()

venv/lib/python3.10/site-packages/aiohttp/client_ws.py

@@ -0,0 +1,315 @@
+"""WebSocket client for asyncio."""
+
+import asyncio
+import sys
+from typing import Any, Optional, cast
+
+from .client_exceptions import ClientError
+from .client_reqrep import ClientResponse
+from .helpers import call_later, set_result
+from .http import (
+    WS_CLOSED_MESSAGE,
+    WS_CLOSING_MESSAGE,
+    WebSocketError,
+    WSCloseCode,
+    WSMessage,
+    WSMsgType,
+)
+from .http_websocket import WebSocketWriter  # WSMessage
+from .streams import EofStream, FlowControlDataQueue
+from .typedefs import (
+    DEFAULT_JSON_DECODER,
+    DEFAULT_JSON_ENCODER,
+    JSONDecoder,
+    JSONEncoder,
+)
+
+if sys.version_info >= (3, 11):
+    import asyncio as async_timeout
+else:
+    import async_timeout
+
+
+class ClientWebSocketResponse:
+    def __init__(
+        self,
+        reader: "FlowControlDataQueue[WSMessage]",
+        writer: WebSocketWriter,
+        protocol: Optional[str],
+        response: ClientResponse,
+        timeout: float,
+        autoclose: bool,
+        autoping: bool,
+        loop: asyncio.AbstractEventLoop,
+        *,
+        receive_timeout: Optional[float] = None,
+        heartbeat: Optional[float] = None,
+        compress: int = 0,
+        client_notakeover: bool = False,
+    ) -> None:
+        self._response = response
+        self._conn = response.connection
+
+        self._writer = writer
+        self._reader = reader
+        self._protocol = protocol
+        self._closed = False
+        self._closing = False
+        self._close_code: Optional[int] = None
+        self._timeout = timeout
+        self._receive_timeout = receive_timeout
+        self._autoclose = autoclose
+        self._autoping = autoping
+        self._heartbeat = heartbeat
+        self._heartbeat_cb: Optional[asyncio.TimerHandle] = None
+        if heartbeat is not None:
+            self._pong_heartbeat = heartbeat / 2.0
+        self._pong_response_cb: Optional[asyncio.TimerHandle] = None
+        self._loop = loop
+        self._waiting: Optional[asyncio.Future[bool]] = None
+        self._exception: Optional[BaseException] = None
+        self._compress = compress
+        self._client_notakeover = client_notakeover
+
+        self._reset_heartbeat()
+
+    def _cancel_heartbeat(self) -> None:
+        if self._pong_response_cb is not None:
+            self._pong_response_cb.cancel()
+            self._pong_response_cb = None
+
+        if self._heartbeat_cb is not None:
+            self._heartbeat_cb.cancel()
+            self._heartbeat_cb = None
+
+    def _reset_heartbeat(self) -> None:
+        self._cancel_heartbeat()
+
+        if self._heartbeat is not None:
+            self._heartbeat_cb = call_later(
+                self._send_heartbeat,
+                self._heartbeat,
+                self._loop,
+                timeout_ceil_threshold=self._conn._connector._timeout_ceil_threshold
+                if self._conn is not None
+                else 5,
+            )
+
+    def _send_heartbeat(self) -> None:
+        if self._heartbeat is not None and not self._closed:
+            # fire-and-forget a task is not perfect but maybe ok for
+            # sending ping. Otherwise we need a long-living heartbeat
+            # task in the class.
+            self._loop.create_task(self._writer.ping())
+
+            if self._pong_response_cb is not None:
+                self._pong_response_cb.cancel()
+            self._pong_response_cb = call_later(
+                self._pong_not_received,
+                self._pong_heartbeat,
+                self._loop,
+                timeout_ceil_threshold=self._conn._connector._timeout_ceil_threshold
+                if self._conn is not None
+                else 5,
+            )
+
+    def _pong_not_received(self) -> None:
+        if not self._closed:
+            self._closed = True
+            self._close_code = WSCloseCode.ABNORMAL_CLOSURE
+            self._exception = asyncio.TimeoutError()
+            self._response.close()
+
+    @property
+    def closed(self) -> bool:
+        return self._closed
+
+    @property
+    def close_code(self) -> Optional[int]:
+        return self._close_code
+
+    @property
+    def protocol(self) -> Optional[str]:
+        return self._protocol
+
+    @property
+    def compress(self) -> int:
+        return self._compress
+
+    @property
+    def client_notakeover(self) -> bool:
+        return self._client_notakeover
+
+    def get_extra_info(self, name: str, default: Any = None) -> Any:
+        """extra info from connection transport"""
+        conn = self._response.connection
+        if conn is None:
+            return default
+        transport = conn.transport
+        if transport is None:
+            return default
+        return transport.get_extra_info(name, default)
+
+    def exception(self) -> Optional[BaseException]:
+        return self._exception
+
+    async def ping(self, message: bytes = b"") -> None:
+        await self._writer.ping(message)
+
+    async def pong(self, message: bytes = b"") -> None:
+        await self._writer.pong(message)
+
+    async def send_str(self, data: str, compress: Optional[int] = None) -> None:
+        if not isinstance(data, str):
+            raise TypeError("data argument must be str (%r)" % type(data))
+        await self._writer.send(data, binary=False, compress=compress)
+
+    async def send_bytes(self, data: bytes, compress: Optional[int] = None) -> None:
+        if not isinstance(data, (bytes, bytearray, memoryview)):
+            raise TypeError("data argument must be byte-ish (%r)" % type(data))
+        await self._writer.send(data, binary=True, compress=compress)
+
+    async def send_json(
+        self,
+        data: Any,
+        compress: Optional[int] = None,
+        *,
+        dumps: JSONEncoder = DEFAULT_JSON_ENCODER,
+    ) -> None:
+        await self.send_str(dumps(data), compress=compress)
+
+    async def close(self, *, code: int = WSCloseCode.OK, message: bytes = b"") -> bool:
+        # we need to break `receive()` cycle first,
+        # `close()` may be called from different task
+        if self._waiting is not None and not self._closing:
+            self._closing = True
+            self._reader.feed_data(WS_CLOSING_MESSAGE, 0)
+            await self._waiting
+
+        if not self._closed:
+            self._cancel_heartbeat()
+            self._closed = True
+            try:
+                await self._writer.close(code, message)
+            except asyncio.CancelledError:
+                self._close_code = WSCloseCode.ABNORMAL_CLOSURE
+                self._response.close()
+                raise
+            except Exception as exc:
+                self._close_code = WSCloseCode.ABNORMAL_CLOSURE
+                self._exception = exc
+                self._response.close()
+                return True
+
+            if self._close_code:
+                self._response.close()
+                return True
+
+            while True:
+                try:
+                    async with async_timeout.timeout(self._timeout):
+                        msg = await self._reader.read()
+                except asyncio.CancelledError:
+                    self._close_code = WSCloseCode.ABNORMAL_CLOSURE
+                    self._response.close()
+                    raise
+                except Exception as exc:
+                    self._close_code = WSCloseCode.ABNORMAL_CLOSURE
+                    self._exception = exc
+                    self._response.close()
+                    return True
+
+                if msg.type == WSMsgType.CLOSE:
+                    self._close_code = msg.data
+                    self._response.close()
+                    return True
+        else:
+            return False
+
+    async def receive(self, timeout: Optional[float] = None) -> WSMessage:
+        while True:
+            if self._waiting is not None:
+                raise RuntimeError("Concurrent call to receive() is not allowed")
+
+            if self._closed:
+                return WS_CLOSED_MESSAGE
+            elif self._closing:
+                await self.close()
+                return WS_CLOSED_MESSAGE
+
+            try:
+                self._waiting = self._loop.create_future()
+                try:
+                    async with async_timeout.timeout(timeout or self._receive_timeout):
+                        msg = await self._reader.read()
+                    self._reset_heartbeat()
+                finally:
+                    waiter = self._waiting
+                    self._waiting = None
+                    set_result(waiter, True)
+            except (asyncio.CancelledError, asyncio.TimeoutError):
+                self._close_code = WSCloseCode.ABNORMAL_CLOSURE
+                raise
+            except EofStream:
+                self._close_code = WSCloseCode.OK
+                await self.close()
+                return WSMessage(WSMsgType.CLOSED, None, None)
+            except ClientError:
+                self._closed = True
+                self._close_code = WSCloseCode.ABNORMAL_CLOSURE
+                return WS_CLOSED_MESSAGE
+            except WebSocketError as exc:
+                self._close_code = exc.code
+                await self.close(code=exc.code)
+                return WSMessage(WSMsgType.ERROR, exc, None)
+            except Exception as exc:
+                self._exception = exc
+                self._closing = True
+                self._close_code = WSCloseCode.ABNORMAL_CLOSURE
+                await self.close()
+                return WSMessage(WSMsgType.ERROR, exc, None)
+
+            if msg.type == WSMsgType.CLOSE:
+                self._closing = True
+                self._close_code = msg.data
+                if not self._closed and self._autoclose:
+                    await self.close()
+            elif msg.type == WSMsgType.CLOSING:
+                self._closing = True
+            elif msg.type == WSMsgType.PING and self._autoping:
+                await self.pong(msg.data)
+                continue
+            elif msg.type == WSMsgType.PONG and self._autoping:
+                continue
+
+            return msg
+
+    async def receive_str(self, *, timeout: Optional[float] = None) -> str:
+        msg = await self.receive(timeout)
+        if msg.type != WSMsgType.TEXT:
+            raise TypeError(f"Received message {msg.type}:{msg.data!r} is not str")
+        return cast(str, msg.data)
+
+    async def receive_bytes(self, *, timeout: Optional[float] = None) -> bytes:
+        msg = await self.receive(timeout)
+        if msg.type != WSMsgType.BINARY:
+            raise TypeError(f"Received message {msg.type}:{msg.data!r} is not bytes")
+        return cast(bytes, msg.data)
+
+    async def receive_json(
+        self,
+        *,
+        loads: JSONDecoder = DEFAULT_JSON_DECODER,
+        timeout: Optional[float] = None,
+    ) -> Any:
+        data = await self.receive_str(timeout=timeout)
+        return loads(data)
+
+    def __aiter__(self) -> "ClientWebSocketResponse":
+        return self
+
+    async def __anext__(self) -> WSMessage:
+        msg = await self.receive()
+        if msg.type in (WSMsgType.CLOSE, WSMsgType.CLOSING, WSMsgType.CLOSED):
+            raise StopAsyncIteration
+        return msg

venv/lib/python3.10/site-packages/aiohttp/cookiejar.py

@@ -0,0 +1,419 @@
+import asyncio
+import calendar
+import contextlib
+import datetime
+import os  # noqa
+import pathlib
+import pickle
+import re
+import time
+from collections import defaultdict
+from http.cookies import BaseCookie, Morsel, SimpleCookie
+from math import ceil
+from typing import (  # noqa
+    DefaultDict,
+    Dict,
+    Iterable,
+    Iterator,
+    List,
+    Mapping,
+    Optional,
+    Set,
+    Tuple,
+    Union,
+    cast,
+)
+
+from yarl import URL
+
+from .abc import AbstractCookieJar, ClearCookiePredicate
+from .helpers import is_ip_address
+from .typedefs import LooseCookies, PathLike, StrOrURL
+
+__all__ = ("CookieJar", "DummyCookieJar")
+
+
+CookieItem = Union[str, "Morsel[str]"]
+
+
+class CookieJar(AbstractCookieJar):
+    """Implements cookie storage adhering to RFC 6265."""
+
+    DATE_TOKENS_RE = re.compile(
+        r"[\x09\x20-\x2F\x3B-\x40\x5B-\x60\x7B-\x7E]*"
+        r"(?P<token>[\x00-\x08\x0A-\x1F\d:a-zA-Z\x7F-\xFF]+)"
+    )
+
+    DATE_HMS_TIME_RE = re.compile(r"(\d{1,2}):(\d{1,2}):(\d{1,2})")
+
+    DATE_DAY_OF_MONTH_RE = re.compile(r"(\d{1,2})")
+
+    DATE_MONTH_RE = re.compile(
+        "(jan)|(feb)|(mar)|(apr)|(may)|(jun)|(jul)|" "(aug)|(sep)|(oct)|(nov)|(dec)",
+        re.I,
+    )
+
+    DATE_YEAR_RE = re.compile(r"(\d{2,4})")
+
+    # calendar.timegm() fails for timestamps after datetime.datetime.max
+    # Minus one as a loss of precision occurs when timestamp() is called.
+    MAX_TIME = (
+        int(datetime.datetime.max.replace(tzinfo=datetime.timezone.utc).timestamp()) - 1
+    )
+    try:
+        calendar.timegm(time.gmtime(MAX_TIME))
+    except (OSError, ValueError):
+        # Hit the maximum representable time on Windows
+        # https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/localtime-localtime32-localtime64
+        # Throws ValueError on PyPy 3.8 and 3.9, OSError elsewhere
+        MAX_TIME = calendar.timegm((3000, 12, 31, 23, 59, 59, -1, -1, -1))
+    except OverflowError:
+        # #4515: datetime.max may not be representable on 32-bit platforms
+        MAX_TIME = 2**31 - 1
+    # Avoid minuses in the future, 3x faster
+    SUB_MAX_TIME = MAX_TIME - 1
+
+    def __init__(
+        self,
+        *,
+        unsafe: bool = False,
+        quote_cookie: bool = True,
+        treat_as_secure_origin: Union[StrOrURL, List[StrOrURL], None] = None,
+        loop: Optional[asyncio.AbstractEventLoop] = None,
+    ) -> None:
+        super().__init__(loop=loop)
+        self._cookies: DefaultDict[Tuple[str, str], SimpleCookie] = defaultdict(
+            SimpleCookie
+        )
+        self._host_only_cookies: Set[Tuple[str, str]] = set()
+        self._unsafe = unsafe
+        self._quote_cookie = quote_cookie
+        if treat_as_secure_origin is None:
+            treat_as_secure_origin = []
+        elif isinstance(treat_as_secure_origin, URL):
+            treat_as_secure_origin = [treat_as_secure_origin.origin()]
+        elif isinstance(treat_as_secure_origin, str):
+            treat_as_secure_origin = [URL(treat_as_secure_origin).origin()]
+        else:
+            treat_as_secure_origin = [
+                URL(url).origin() if isinstance(url, str) else url.origin()
+                for url in treat_as_secure_origin
+            ]
+        self._treat_as_secure_origin = treat_as_secure_origin
+        self._next_expiration: float = ceil(time.time())
+        self._expirations: Dict[Tuple[str, str, str], float] = {}
+
+    def save(self, file_path: PathLike) -> None:
+        file_path = pathlib.Path(file_path)
+        with file_path.open(mode="wb") as f:
+            pickle.dump(self._cookies, f, pickle.HIGHEST_PROTOCOL)
+
+    def load(self, file_path: PathLike) -> None:
+        file_path = pathlib.Path(file_path)
+        with file_path.open(mode="rb") as f:
+            self._cookies = pickle.load(f)
+
+    def clear(self, predicate: Optional[ClearCookiePredicate] = None) -> None:
+        if predicate is None:
+            self._next_expiration = ceil(time.time())
+            self._cookies.clear()
+            self._host_only_cookies.clear()
+            self._expirations.clear()
+            return
+
+        to_del = []
+        now = time.time()
+        for (domain, path), cookie in self._cookies.items():
+            for name, morsel in cookie.items():
+                key = (domain, path, name)
+                if (
+                    key in self._expirations and self._expirations[key] <= now
+                ) or predicate(morsel):
+                    to_del.append(key)
+
+        for domain, path, name in to_del:
+            self._host_only_cookies.discard((domain, name))
+            key = (domain, path, name)
+            if key in self._expirations:
+                del self._expirations[(domain, path, name)]
+            self._cookies[(domain, path)].pop(name, None)
+
+        self._next_expiration = (
+            min(*self._expirations.values(), self.SUB_MAX_TIME) + 1
+            if self._expirations
+            else self.MAX_TIME
+        )
+
+    def clear_domain(self, domain: str) -> None:
+        self.clear(lambda x: self._is_domain_match(domain, x["domain"]))
+
+    def __iter__(self) -> "Iterator[Morsel[str]]":
+        self._do_expiration()
+        for val in self._cookies.values():
+            yield from val.values()
+
+    def __len__(self) -> int:
+        return sum(1 for i in self)
+
+    def _do_expiration(self) -> None:
+        self.clear(lambda x: False)
+
+    def _expire_cookie(self, when: float, domain: str, path: str, name: str) -> None:
+        self._next_expiration = min(self._next_expiration, when)
+        self._expirations[(domain, path, name)] = when
+
+    def update_cookies(self, cookies: LooseCookies, response_url: URL = URL()) -> None:
+        """Update cookies."""
+        hostname = response_url.raw_host
+
+        if not self._unsafe and is_ip_address(hostname):
+            # Don't accept cookies from IPs
+            return
+
+        if isinstance(cookies, Mapping):
+            cookies = cookies.items()
+
+        for name, cookie in cookies:
+            if not isinstance(cookie, Morsel):
+                tmp = SimpleCookie()
+                tmp[name] = cookie  # type: ignore[assignment]
+                cookie = tmp[name]
+
+            domain = cookie["domain"]
+
+            # ignore domains with trailing dots
+            if domain.endswith("."):
+                domain = ""
+                del cookie["domain"]
+
+            if not domain and hostname is not None:
+                # Set the cookie's domain to the response hostname
+                # and set its host-only-flag
+                self._host_only_cookies.add((hostname, name))
+                domain = cookie["domain"] = hostname
+
+            if domain.startswith("."):
+                # Remove leading dot
+                domain = domain[1:]
+                cookie["domain"] = domain
+
+            if hostname and not self._is_domain_match(domain, hostname):
+                # Setting cookies for different domains is not allowed
+                continue
+
+            path = cookie["path"]
+            if not path or not path.startswith("/"):
+                # Set the cookie's path to the response path
+                path = response_url.path
+                if not path.startswith("/"):
+                    path = "/"
+                else:
+                    # Cut everything from the last slash to the end
+                    path = "/" + path[1 : path.rfind("/")]
+                cookie["path"] = path
+
+            max_age = cookie["max-age"]
+            if max_age:
+                try:
+                    delta_seconds = int(max_age)
+                    max_age_expiration = min(time.time() + delta_seconds, self.MAX_TIME)
+                    self._expire_cookie(max_age_expiration, domain, path, name)
+                except ValueError:
+                    cookie["max-age"] = ""
+
+            else:
+                expires = cookie["expires"]
+                if expires:
+                    expire_time = self._parse_date(expires)
+                    if expire_time:
+                        self._expire_cookie(expire_time, domain, path, name)
+                    else:
+                        cookie["expires"] = ""
+
+            self._cookies[(domain, path)][name] = cookie
+
+        self._do_expiration()
+
+    def filter_cookies(self, request_url: URL = URL()) -> "BaseCookie[str]":
+        """Returns this jar's cookies filtered by their attributes."""
+        filtered: Union[SimpleCookie, "BaseCookie[str]"] = (
+            SimpleCookie() if self._quote_cookie else BaseCookie()
+        )
+        if not self._cookies:
+            # Skip do_expiration() if there are no cookies.
+            return filtered
+        self._do_expiration()
+        if not self._cookies:
+            # Skip rest of function if no non-expired cookies.
+            return filtered
+        request_url = URL(request_url)
+        hostname = request_url.raw_host or ""
+
+        is_not_secure = request_url.scheme not in ("https", "wss")
+        if is_not_secure and self._treat_as_secure_origin:
+            request_origin = URL()
+            with contextlib.suppress(ValueError):
+                request_origin = request_url.origin()
+            is_not_secure = request_origin not in self._treat_as_secure_origin
+
+        # Point 2: https://www.rfc-editor.org/rfc/rfc6265.html#section-5.4
+        for cookie in sorted(self, key=lambda c: len(c["path"])):
+            name = cookie.key
+            domain = cookie["domain"]
+
+            # Send shared cookies
+            if not domain:
+                filtered[name] = cookie.value
+                continue
+
+            if not self._unsafe and is_ip_address(hostname):
+                continue
+
+            if (domain, name) in self._host_only_cookies:
+                if domain != hostname:
+                    continue
+            elif not self._is_domain_match(domain, hostname):
+                continue
+
+            if not self._is_path_match(request_url.path, cookie["path"]):
+                continue
+
+            if is_not_secure and cookie["secure"]:
+                continue
+
+            # It's critical we use the Morsel so the coded_value
+            # (based on cookie version) is preserved
+            mrsl_val = cast("Morsel[str]", cookie.get(cookie.key, Morsel()))
+            mrsl_val.set(cookie.key, cookie.value, cookie.coded_value)
+            filtered[name] = mrsl_val
+
+        return filtered
+
+    @staticmethod
+    def _is_domain_match(domain: str, hostname: str) -> bool:
+        """Implements domain matching adhering to RFC 6265."""
+        if hostname == domain:
+            return True
+
+        if not hostname.endswith(domain):
+            return False
+
+        non_matching = hostname[: -len(domain)]
+
+        if not non_matching.endswith("."):
+            return False
+
+        return not is_ip_address(hostname)
+
+    @staticmethod
+    def _is_path_match(req_path: str, cookie_path: str) -> bool:
+        """Implements path matching adhering to RFC 6265."""
+        if not req_path.startswith("/"):
+            req_path = "/"
+
+        if req_path == cookie_path:
+            return True
+
+        if not req_path.startswith(cookie_path):
+            return False
+
+        if cookie_path.endswith("/"):
+            return True
+
+        non_matching = req_path[len(cookie_path) :]
+
+        return non_matching.startswith("/")
+
+    @classmethod
+    def _parse_date(cls, date_str: str) -> Optional[int]:
+        """Implements date string parsing adhering to RFC 6265."""
+        if not date_str:
+            return None
+
+        found_time = False
+        found_day = False
+        found_month = False
+        found_year = False
+
+        hour = minute = second = 0
+        day = 0
+        month = 0
+        year = 0
+
+        for token_match in cls.DATE_TOKENS_RE.finditer(date_str):
+
+            token = token_match.group("token")
+
+            if not found_time:
+                time_match = cls.DATE_HMS_TIME_RE.match(token)
+                if time_match:
+                    found_time = True
+                    hour, minute, second = (int(s) for s in time_match.groups())
+                    continue
+
+            if not found_day:
+                day_match = cls.DATE_DAY_OF_MONTH_RE.match(token)
+                if day_match:
+                    found_day = True
+                    day = int(day_match.group())
+                    continue
+
+            if not found_month:
+                month_match = cls.DATE_MONTH_RE.match(token)
+                if month_match:
+                    found_month = True
+                    assert month_match.lastindex is not None
+                    month = month_match.lastindex
+                    continue
+
+            if not found_year:
+                year_match = cls.DATE_YEAR_RE.match(token)
+                if year_match:
+                    found_year = True
+                    year = int(year_match.group())
+
+        if 70 <= year <= 99:
+            year += 1900
+        elif 0 <= year <= 69:
+            year += 2000
+
+        if False in (found_day, found_month, found_year, found_time):
+            return None
+
+        if not 1 <= day <= 31:
+            return None
+
+        if year < 1601 or hour > 23 or minute > 59 or second > 59:
+            return None
+
+        return calendar.timegm((year, month, day, hour, minute, second, -1, -1, -1))
+
+
+class DummyCookieJar(AbstractCookieJar):
+    """Implements a dummy cookie storage.
+
+    It can be used with the ClientSession when no cookie processing is needed.
+
+    """
+
+    def __init__(self, *, loop: Optional[asyncio.AbstractEventLoop] = None) -> None:
+        super().__init__(loop=loop)
+
+    def __iter__(self) -> "Iterator[Morsel[str]]":
+        while False:
+            yield None
+
+    def __len__(self) -> int:
+        return 0
+
+    def clear(self, predicate: Optional[ClearCookiePredicate] = None) -> None:
+        pass
+
+    def clear_domain(self, domain: str) -> None:
+        pass
+
+    def update_cookies(self, cookies: LooseCookies, response_url: URL = URL()) -> None:
+        pass
+
+    def filter_cookies(self, request_url: URL) -> "BaseCookie[str]":
+        return SimpleCookie()

venv/lib/python3.10/site-packages/aiohttp/hdrs.py

@@ -0,0 +1,108 @@
+"""HTTP Headers constants."""
+
+# After changing the file content call ./tools/gen.py
+# to regenerate the headers parser
+from typing import Final, Set
+
+from multidict import istr
+
+METH_ANY: Final[str] = "*"
+METH_CONNECT: Final[str] = "CONNECT"
+METH_HEAD: Final[str] = "HEAD"
+METH_GET: Final[str] = "GET"
+METH_DELETE: Final[str] = "DELETE"
+METH_OPTIONS: Final[str] = "OPTIONS"
+METH_PATCH: Final[str] = "PATCH"
+METH_POST: Final[str] = "POST"
+METH_PUT: Final[str] = "PUT"
+METH_TRACE: Final[str] = "TRACE"
+
+METH_ALL: Final[Set[str]] = {
+    METH_CONNECT,
+    METH_HEAD,
+    METH_GET,
+    METH_DELETE,
+    METH_OPTIONS,
+    METH_PATCH,
+    METH_POST,
+    METH_PUT,
+    METH_TRACE,
+}
+
+ACCEPT: Final[istr] = istr("Accept")
+ACCEPT_CHARSET: Final[istr] = istr("Accept-Charset")
+ACCEPT_ENCODING: Final[istr] = istr("Accept-Encoding")
+ACCEPT_LANGUAGE: Final[istr] = istr("Accept-Language")
+ACCEPT_RANGES: Final[istr] = istr("Accept-Ranges")
+ACCESS_CONTROL_MAX_AGE: Final[istr] = istr("Access-Control-Max-Age")
+ACCESS_CONTROL_ALLOW_CREDENTIALS: Final[istr] = istr("Access-Control-Allow-Credentials")
+ACCESS_CONTROL_ALLOW_HEADERS: Final[istr] = istr("Access-Control-Allow-Headers")
+ACCESS_CONTROL_ALLOW_METHODS: Final[istr] = istr("Access-Control-Allow-Methods")
+ACCESS_CONTROL_ALLOW_ORIGIN: Final[istr] = istr("Access-Control-Allow-Origin")
+ACCESS_CONTROL_EXPOSE_HEADERS: Final[istr] = istr("Access-Control-Expose-Headers")
+ACCESS_CONTROL_REQUEST_HEADERS: Final[istr] = istr("Access-Control-Request-Headers")
+ACCESS_CONTROL_REQUEST_METHOD: Final[istr] = istr("Access-Control-Request-Method")
+AGE: Final[istr] = istr("Age")
+ALLOW: Final[istr] = istr("Allow")
+AUTHORIZATION: Final[istr] = istr("Authorization")
+CACHE_CONTROL: Final[istr] = istr("Cache-Control")
+CONNECTION: Final[istr] = istr("Connection")
+CONTENT_DISPOSITION: Final[istr] = istr("Content-Disposition")
+CONTENT_ENCODING: Final[istr] = istr("Content-Encoding")
+CONTENT_LANGUAGE: Final[istr] = istr("Content-Language")
+CONTENT_LENGTH: Final[istr] = istr("Content-Length")
+CONTENT_LOCATION: Final[istr] = istr("Content-Location")
+CONTENT_MD5: Final[istr] = istr("Content-MD5")
+CONTENT_RANGE: Final[istr] = istr("Content-Range")
+CONTENT_TRANSFER_ENCODING: Final[istr] = istr("Content-Transfer-Encoding")
+CONTENT_TYPE: Final[istr] = istr("Content-Type")
+COOKIE: Final[istr] = istr("Cookie")
+DATE: Final[istr] = istr("Date")
+DESTINATION: Final[istr] = istr("Destination")
+DIGEST: Final[istr] = istr("Digest")
+ETAG: Final[istr] = istr("Etag")
+EXPECT: Final[istr] = istr("Expect")
+EXPIRES: Final[istr] = istr("Expires")
+FORWARDED: Final[istr] = istr("Forwarded")
+FROM: Final[istr] = istr("From")
+HOST: Final[istr] = istr("Host")
+IF_MATCH: Final[istr] = istr("If-Match")
+IF_MODIFIED_SINCE: Final[istr] = istr("If-Modified-Since")
+IF_NONE_MATCH: Final[istr] = istr("If-None-Match")
+IF_RANGE: Final[istr] = istr("If-Range")
+IF_UNMODIFIED_SINCE: Final[istr] = istr("If-Unmodified-Since")
+KEEP_ALIVE: Final[istr] = istr("Keep-Alive")
+LAST_EVENT_ID: Final[istr] = istr("Last-Event-ID")
+LAST_MODIFIED: Final[istr] = istr("Last-Modified")
+LINK: Final[istr] = istr("Link")
+LOCATION: Final[istr] = istr("Location")
+MAX_FORWARDS: Final[istr] = istr("Max-Forwards")
+ORIGIN: Final[istr] = istr("Origin")
+PRAGMA: Final[istr] = istr("Pragma")
+PROXY_AUTHENTICATE: Final[istr] = istr("Proxy-Authenticate")
+PROXY_AUTHORIZATION: Final[istr] = istr("Proxy-Authorization")
+RANGE: Final[istr] = istr("Range")
+REFERER: Final[istr] = istr("Referer")
+RETRY_AFTER: Final[istr] = istr("Retry-After")
+SEC_WEBSOCKET_ACCEPT: Final[istr] = istr("Sec-WebSocket-Accept")
+SEC_WEBSOCKET_VERSION: Final[istr] = istr("Sec-WebSocket-Version")
+SEC_WEBSOCKET_PROTOCOL: Final[istr] = istr("Sec-WebSocket-Protocol")
+SEC_WEBSOCKET_EXTENSIONS: Final[istr] = istr("Sec-WebSocket-Extensions")
+SEC_WEBSOCKET_KEY: Final[istr] = istr("Sec-WebSocket-Key")
+SEC_WEBSOCKET_KEY1: Final[istr] = istr("Sec-WebSocket-Key1")
+SERVER: Final[istr] = istr("Server")
+SET_COOKIE: Final[istr] = istr("Set-Cookie")
+TE: Final[istr] = istr("TE")
+TRAILER: Final[istr] = istr("Trailer")
+TRANSFER_ENCODING: Final[istr] = istr("Transfer-Encoding")
+UPGRADE: Final[istr] = istr("Upgrade")
+URI: Final[istr] = istr("URI")
+USER_AGENT: Final[istr] = istr("User-Agent")
+VARY: Final[istr] = istr("Vary")
+VIA: Final[istr] = istr("Via")
+WANT_DIGEST: Final[istr] = istr("Want-Digest")
+WARNING: Final[istr] = istr("Warning")
+WWW_AUTHENTICATE: Final[istr] = istr("WWW-Authenticate")
+X_FORWARDED_FOR: Final[istr] = istr("X-Forwarded-For")
+X_FORWARDED_HOST: Final[istr] = istr("X-Forwarded-Host")
+X_FORWARDED_PROTO: Final[istr] = istr("X-Forwarded-Proto")

venv/lib/python3.10/site-packages/aiohttp/helpers.py

@@ -0,0 +1,1029 @@
+"""Various helper functions"""
+
+import asyncio
+import base64
+import binascii
+import contextlib
+import datetime
+import enum
+import functools
+import inspect
+import netrc
+import os
+import platform
+import re
+import sys
+import time
+import warnings
+import weakref
+from collections import namedtuple
+from contextlib import suppress
+from email.parser import HeaderParser
+from email.utils import parsedate
+from math import ceil
+from pathlib import Path
+from types import TracebackType
+from typing import (
+    Any,
+    Callable,
+    ContextManager,
+    Dict,
+    Generator,
+    Generic,
+    Iterable,
+    Iterator,
+    List,
+    Mapping,
+    Optional,
+    Pattern,
+    Protocol,
+    Tuple,
+    Type,
+    TypeVar,
+    Union,
+    get_args,
+    overload,
+)
+from urllib.parse import quote
+from urllib.request import getproxies, proxy_bypass
+
+import attr
+from multidict import MultiDict, MultiDictProxy, MultiMapping
+from yarl import URL
+
+from . import hdrs
+from .log import client_logger, internal_logger
+
+if sys.version_info >= (3, 11):
+    import asyncio as async_timeout
+else:
+    import async_timeout
+
+__all__ = ("BasicAuth", "ChainMapProxy", "ETag")
+
+IS_MACOS = platform.system() == "Darwin"
+IS_WINDOWS = platform.system() == "Windows"
+
+PY_310 = sys.version_info >= (3, 10)
+PY_311 = sys.version_info >= (3, 11)
+
+
+_T = TypeVar("_T")
+_S = TypeVar("_S")
+
+_SENTINEL = enum.Enum("_SENTINEL", "sentinel")
+sentinel = _SENTINEL.sentinel
+
+NO_EXTENSIONS = bool(os.environ.get("AIOHTTP_NO_EXTENSIONS"))
+
+DEBUG = sys.flags.dev_mode or (
+    not sys.flags.ignore_environment and bool(os.environ.get("PYTHONASYNCIODEBUG"))
+)
+
+
+CHAR = {chr(i) for i in range(0, 128)}
+CTL = {chr(i) for i in range(0, 32)} | {
+    chr(127),
+}
+SEPARATORS = {
+    "(",
+    ")",
+    "<",
+    ">",
+    "@",
+    ",",
+    ";",
+    ":",
+    "\\",
+    '"',
+    "/",
+    "[",
+    "]",
+    "?",
+    "=",
+    "{",
+    "}",
+    " ",
+    chr(9),
+}
+TOKEN = CHAR ^ CTL ^ SEPARATORS
+
+
+class noop:
+    def __await__(self) -> Generator[None, None, None]:
+        yield
+
+
+class BasicAuth(namedtuple("BasicAuth", ["login", "password", "encoding"])):
+    """Http basic authentication helper."""
+
+    def __new__(
+        cls, login: str, password: str = "", encoding: str = "latin1"
+    ) -> "BasicAuth":
+        if login is None:
+            raise ValueError("None is not allowed as login value")
+
+        if password is None:
+            raise ValueError("None is not allowed as password value")
+
+        if ":" in login:
+            raise ValueError('A ":" is not allowed in login (RFC 1945#section-11.1)')
+
+        return super().__new__(cls, login, password, encoding)
+
+    @classmethod
+    def decode(cls, auth_header: str, encoding: str = "latin1") -> "BasicAuth":
+        """Create a BasicAuth object from an Authorization HTTP header."""
+        try:
+            auth_type, encoded_credentials = auth_header.split(" ", 1)
+        except ValueError:
+            raise ValueError("Could not parse authorization header.")
+
+        if auth_type.lower() != "basic":
+            raise ValueError("Unknown authorization method %s" % auth_type)
+
+        try:
+            decoded = base64.b64decode(
+                encoded_credentials.encode("ascii"), validate=True
+            ).decode(encoding)
+        except binascii.Error:
+            raise ValueError("Invalid base64 encoding.")
+
+        try:
+            # RFC 2617 HTTP Authentication
+            # https://www.ietf.org/rfc/rfc2617.txt
+            # the colon must be present, but the username and password may be
+            # otherwise blank.
+            username, password = decoded.split(":", 1)
+        except ValueError:
+            raise ValueError("Invalid credentials.")
+
+        return cls(username, password, encoding=encoding)
+
+    @classmethod
+    def from_url(cls, url: URL, *, encoding: str = "latin1") -> Optional["BasicAuth"]:
+        """Create BasicAuth from url."""
+        if not isinstance(url, URL):
+            raise TypeError("url should be yarl.URL instance")
+        if url.user is None:
+            return None
+        return cls(url.user, url.password or "", encoding=encoding)
+
+    def encode(self) -> str:
+        """Encode credentials."""
+        creds = (f"{self.login}:{self.password}").encode(self.encoding)
+        return "Basic %s" % base64.b64encode(creds).decode(self.encoding)
+
+
+def strip_auth_from_url(url: URL) -> Tuple[URL, Optional[BasicAuth]]:
+    auth = BasicAuth.from_url(url)
+    if auth is None:
+        return url, None
+    else:
+        return url.with_user(None), auth
+
+
+def netrc_from_env() -> Optional[netrc.netrc]:
+    """Load netrc from file.
+
+    Attempt to load it from the path specified by the env-var
+    NETRC or in the default location in the user's home directory.
+
+    Returns None if it couldn't be found or fails to parse.
+    """
+    netrc_env = os.environ.get("NETRC")
+
+    if netrc_env is not None:
+        netrc_path = Path(netrc_env)
+    else:
+        try:
+            home_dir = Path.home()
+        except RuntimeError as e:  # pragma: no cover
+            # if pathlib can't resolve home, it may raise a RuntimeError
+            client_logger.debug(
+                "Could not resolve home directory when "
+                "trying to look for .netrc file: %s",
+                e,
+            )
+            return None
+
+        netrc_path = home_dir / ("_netrc" if IS_WINDOWS else ".netrc")
+
+    try:
+        return netrc.netrc(str(netrc_path))
+    except netrc.NetrcParseError as e:
+        client_logger.warning("Could not parse .netrc file: %s", e)
+    except OSError as e:
+        netrc_exists = False
+        with contextlib.suppress(OSError):
+            netrc_exists = netrc_path.is_file()
+        # we couldn't read the file (doesn't exist, permissions, etc.)
+        if netrc_env or netrc_exists:
+            # only warn if the environment wanted us to load it,
+            # or it appears like the default file does actually exist
+            client_logger.warning("Could not read .netrc file: %s", e)
+
+    return None
+
+
+@attr.s(auto_attribs=True, frozen=True, slots=True)
+class ProxyInfo:
+    proxy: URL
+    proxy_auth: Optional[BasicAuth]
+
+
+def basicauth_from_netrc(netrc_obj: Optional[netrc.netrc], host: str) -> BasicAuth:
+    """
+    Return :py:class:`~aiohttp.BasicAuth` credentials for ``host`` from ``netrc_obj``.
+
+    :raises LookupError: if ``netrc_obj`` is :py:data:`None` or if no
+            entry is found for the ``host``.
+    """
+    if netrc_obj is None:
+        raise LookupError("No .netrc file found")
+    auth_from_netrc = netrc_obj.authenticators(host)
+
+    if auth_from_netrc is None:
+        raise LookupError(f"No entry for {host!s} found in the `.netrc` file.")
+    login, account, password = auth_from_netrc
+
+    # TODO(PY311): username = login or account
+    # Up to python 3.10, account could be None if not specified,
+    # and login will be empty string if not specified. From 3.11,
+    # login and account will be empty string if not specified.
+    username = login if (login or account is None) else account
+
+    # TODO(PY311): Remove this, as password will be empty string
+    # if not specified
+    if password is None:
+        password = ""
+
+    return BasicAuth(username, password)
+
+
+def proxies_from_env() -> Dict[str, ProxyInfo]:
+    proxy_urls = {
+        k: URL(v)
+        for k, v in getproxies().items()
+        if k in ("http", "https", "ws", "wss")
+    }
+    netrc_obj = netrc_from_env()
+    stripped = {k: strip_auth_from_url(v) for k, v in proxy_urls.items()}
+    ret = {}
+    for proto, val in stripped.items():
+        proxy, auth = val
+        if proxy.scheme in ("https", "wss"):
+            client_logger.warning(
+                "%s proxies %s are not supported, ignoring", proxy.scheme.upper(), proxy
+            )
+            continue
+        if netrc_obj and auth is None:
+            if proxy.host is not None:
+                try:
+                    auth = basicauth_from_netrc(netrc_obj, proxy.host)
+                except LookupError:
+                    auth = None
+        ret[proto] = ProxyInfo(proxy, auth)
+    return ret
+
+
+def current_task(
+    loop: Optional[asyncio.AbstractEventLoop] = None,
+) -> "Optional[asyncio.Task[Any]]":
+    return asyncio.current_task(loop=loop)
+
+
+def get_running_loop(
+    loop: Optional[asyncio.AbstractEventLoop] = None,
+) -> asyncio.AbstractEventLoop:
+    if loop is None:
+        loop = asyncio.get_event_loop()
+    if not loop.is_running():
+        warnings.warn(
+            "The object should be created within an async function",
+            DeprecationWarning,
+            stacklevel=3,
+        )
+        if loop.get_debug():
+            internal_logger.warning(
+                "The object should be created within an async function", stack_info=True
+            )
+    return loop
+
+
+def isasyncgenfunction(obj: Any) -> bool:
+    func = getattr(inspect, "isasyncgenfunction", None)
+    if func is not None:
+        return func(obj)  # type: ignore[no-any-return]
+    else:
+        return False
+
+
+def get_env_proxy_for_url(url: URL) -> Tuple[URL, Optional[BasicAuth]]:
+    """Get a permitted proxy for the given URL from the env."""
+    if url.host is not None and proxy_bypass(url.host):
+        raise LookupError(f"Proxying is disallowed for `{url.host!r}`")
+
+    proxies_in_env = proxies_from_env()
+    try:
+        proxy_info = proxies_in_env[url.scheme]
+    except KeyError:
+        raise LookupError(f"No proxies found for `{url!s}` in the env")
+    else:
+        return proxy_info.proxy, proxy_info.proxy_auth
+
+
+@attr.s(auto_attribs=True, frozen=True, slots=True)
+class MimeType:
+    type: str
+    subtype: str
+    suffix: str
+    parameters: "MultiDictProxy[str]"
+
+
+@functools.lru_cache(maxsize=56)
+def parse_mimetype(mimetype: str) -> MimeType:
+    """Parses a MIME type into its components.
+
+    mimetype is a MIME type string.
+
+    Returns a MimeType object.
+
+    Example:
+
+    >>> parse_mimetype('text/html; charset=utf-8')
+    MimeType(type='text', subtype='html', suffix='',
+             parameters={'charset': 'utf-8'})
+
+    """
+    if not mimetype:
+        return MimeType(
+            type="", subtype="", suffix="", parameters=MultiDictProxy(MultiDict())
+        )
+
+    parts = mimetype.split(";")
+    params: MultiDict[str] = MultiDict()
+    for item in parts[1:]:
+        if not item:
+            continue
+        key, _, value = item.partition("=")
+        params.add(key.lower().strip(), value.strip(' "'))
+
+    fulltype = parts[0].strip().lower()
+    if fulltype == "*":
+        fulltype = "*/*"
+
+    mtype, _, stype = fulltype.partition("/")
+    stype, _, suffix = stype.partition("+")
+
+    return MimeType(
+        type=mtype, subtype=stype, suffix=suffix, parameters=MultiDictProxy(params)
+    )
+
+
+def guess_filename(obj: Any, default: Optional[str] = None) -> Optional[str]:
+    name = getattr(obj, "name", None)
+    if name and isinstance(name, str) and name[0] != "<" and name[-1] != ">":
+        return Path(name).name
+    return default
+
+
+not_qtext_re = re.compile(r"[^\041\043-\133\135-\176]")
+QCONTENT = {chr(i) for i in range(0x20, 0x7F)} | {"\t"}
+
+
+def quoted_string(content: str) -> str:
+    """Return 7-bit content as quoted-string.
+
+    Format content into a quoted-string as defined in RFC5322 for
+    Internet Message Format. Notice that this is not the 8-bit HTTP
+    format, but the 7-bit email format. Content must be in usascii or
+    a ValueError is raised.
+    """
+    if not (QCONTENT > set(content)):
+        raise ValueError(f"bad content for quoted-string {content!r}")
+    return not_qtext_re.sub(lambda x: "\\" + x.group(0), content)
+
+
+def content_disposition_header(
+    disptype: str, quote_fields: bool = True, _charset: str = "utf-8", **params: str
+) -> str:
+    """Sets ``Content-Disposition`` header for MIME.
+
+    This is the MIME payload Content-Disposition header from RFC 2183
+    and RFC 7579 section 4.2, not the HTTP Content-Disposition from
+    RFC 6266.
+
+    disptype is a disposition type: inline, attachment, form-data.
+    Should be valid extension token (see RFC 2183)
+
+    quote_fields performs value quoting to 7-bit MIME headers
+    according to RFC 7578. Set to quote_fields to False if recipient
+    can take 8-bit file names and field values.
+
+    _charset specifies the charset to use when quote_fields is True.
+
+    params is a dict with disposition params.
+    """
+    if not disptype or not (TOKEN > set(disptype)):
+        raise ValueError("bad content disposition type {!r}" "".format(disptype))
+
+    value = disptype
+    if params:
+        lparams = []
+        for key, val in params.items():
+            if not key or not (TOKEN > set(key)):
+                raise ValueError(
+                    "bad content disposition parameter" " {!r}={!r}".format(key, val)
+                )
+            if quote_fields:
+                if key.lower() == "filename":
+                    qval = quote(val, "", encoding=_charset)
+                    lparams.append((key, '"%s"' % qval))
+                else:
+                    try:
+                        qval = quoted_string(val)
+                    except ValueError:
+                        qval = "".join(
+                            (_charset, "''", quote(val, "", encoding=_charset))
+                        )
+                        lparams.append((key + "*", qval))
+                    else:
+                        lparams.append((key, '"%s"' % qval))
+            else:
+                qval = val.replace("\\", "\\\\").replace('"', '\\"')
+                lparams.append((key, '"%s"' % qval))
+        sparams = "; ".join("=".join(pair) for pair in lparams)
+        value = "; ".join((value, sparams))
+    return value
+
+
+class _TSelf(Protocol, Generic[_T]):
+    _cache: Dict[str, _T]
+
+
+class reify(Generic[_T]):
+    """Use as a class method decorator.
+
+    It operates almost exactly like
+    the Python `@property` decorator, but it puts the result of the
+    method it decorates into the instance dict after the first call,
+    effectively replacing the function it decorates with an instance
+    variable.  It is, in Python parlance, a data descriptor.
+    """
+
+    def __init__(self, wrapped: Callable[..., _T]) -> None:
+        self.wrapped = wrapped
+        self.__doc__ = wrapped.__doc__
+        self.name = wrapped.__name__
+
+    def __get__(self, inst: _TSelf[_T], owner: Optional[Type[Any]] = None) -> _T:
+        try:
+            try:
+                return inst._cache[self.name]
+            except KeyError:
+                val = self.wrapped(inst)
+                inst._cache[self.name] = val
+                return val
+        except AttributeError:
+            if inst is None:
+                return self
+            raise
+
+    def __set__(self, inst: _TSelf[_T], value: _T) -> None:
+        raise AttributeError("reified property is read-only")
+
+
+reify_py = reify
+
+try:
+    from ._helpers import reify as reify_c
+
+    if not NO_EXTENSIONS:
+        reify = reify_c  # type: ignore[misc,assignment]
+except ImportError:
+    pass
+
+_ipv4_pattern = (
+    r"^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}"
+    r"(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"
+)
+_ipv6_pattern = (
+    r"^(?:(?:(?:[A-F0-9]{1,4}:){6}|(?=(?:[A-F0-9]{0,4}:){0,6}"
+    r"(?:[0-9]{1,3}\.){3}[0-9]{1,3}$)(([0-9A-F]{1,4}:){0,5}|:)"
+    r"((:[0-9A-F]{1,4}){1,5}:|:)|::(?:[A-F0-9]{1,4}:){5})"
+    r"(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.){3}"
+    r"(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])|(?:[A-F0-9]{1,4}:){7}"
+    r"[A-F0-9]{1,4}|(?=(?:[A-F0-9]{0,4}:){0,7}[A-F0-9]{0,4}$)"
+    r"(([0-9A-F]{1,4}:){1,7}|:)((:[0-9A-F]{1,4}){1,7}|:)|(?:[A-F0-9]{1,4}:){7}"
+    r":|:(:[A-F0-9]{1,4}){7})$"
+)
+_ipv4_regex = re.compile(_ipv4_pattern)
+_ipv6_regex = re.compile(_ipv6_pattern, flags=re.IGNORECASE)
+_ipv4_regexb = re.compile(_ipv4_pattern.encode("ascii"))
+_ipv6_regexb = re.compile(_ipv6_pattern.encode("ascii"), flags=re.IGNORECASE)
+
+
+def _is_ip_address(
+    regex: Pattern[str], regexb: Pattern[bytes], host: Optional[Union[str, bytes]]
+) -> bool:
+    if host is None:
+        return False
+    if isinstance(host, str):
+        return bool(regex.match(host))
+    elif isinstance(host, (bytes, bytearray, memoryview)):
+        return bool(regexb.match(host))
+    else:
+        raise TypeError(f"{host} [{type(host)}] is not a str or bytes")
+
+
+is_ipv4_address = functools.partial(_is_ip_address, _ipv4_regex, _ipv4_regexb)
+is_ipv6_address = functools.partial(_is_ip_address, _ipv6_regex, _ipv6_regexb)
+
+
+def is_ip_address(host: Optional[Union[str, bytes, bytearray, memoryview]]) -> bool:
+    return is_ipv4_address(host) or is_ipv6_address(host)
+
+
+_cached_current_datetime: Optional[int] = None
+_cached_formatted_datetime = ""
+
+
+def rfc822_formatted_time() -> str:
+    global _cached_current_datetime
+    global _cached_formatted_datetime
+
+    now = int(time.time())
+    if now != _cached_current_datetime:
+        # Weekday and month names for HTTP date/time formatting;
+        # always English!
+        # Tuples are constants stored in codeobject!
+        _weekdayname = ("Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun")
+        _monthname = (
+            "",  # Dummy so we can use 1-based month numbers
+            "Jan",
+            "Feb",
+            "Mar",
+            "Apr",
+            "May",
+            "Jun",
+            "Jul",
+            "Aug",
+            "Sep",
+            "Oct",
+            "Nov",
+            "Dec",
+        )
+
+        year, month, day, hh, mm, ss, wd, *tail = time.gmtime(now)
+        _cached_formatted_datetime = "%s, %02d %3s %4d %02d:%02d:%02d GMT" % (
+            _weekdayname[wd],
+            day,
+            _monthname[month],
+            year,
+            hh,
+            mm,
+            ss,
+        )
+        _cached_current_datetime = now
+    return _cached_formatted_datetime
+
+
+def _weakref_handle(info: "Tuple[weakref.ref[object], str]") -> None:
+    ref, name = info
+    ob = ref()
+    if ob is not None:
+        with suppress(Exception):
+            getattr(ob, name)()
+
+
+def weakref_handle(
+    ob: object,
+    name: str,
+    timeout: float,
+    loop: asyncio.AbstractEventLoop,
+    timeout_ceil_threshold: float = 5,
+) -> Optional[asyncio.TimerHandle]:
+    if timeout is not None and timeout > 0:
+        when = loop.time() + timeout
+        if timeout >= timeout_ceil_threshold:
+            when = ceil(when)
+
+        return loop.call_at(when, _weakref_handle, (weakref.ref(ob), name))
+    return None
+
+
+def call_later(
+    cb: Callable[[], Any],
+    timeout: float,
+    loop: asyncio.AbstractEventLoop,
+    timeout_ceil_threshold: float = 5,
+) -> Optional[asyncio.TimerHandle]:
+    if timeout is not None and timeout > 0:
+        when = loop.time() + timeout
+        if timeout > timeout_ceil_threshold:
+            when = ceil(when)
+        return loop.call_at(when, cb)
+    return None
+
+
+class TimeoutHandle:
+    """Timeout handle"""
+
+    def __init__(
+        self,
+        loop: asyncio.AbstractEventLoop,
+        timeout: Optional[float],
+        ceil_threshold: float = 5,
+    ) -> None:
+        self._timeout = timeout
+        self._loop = loop
+        self._ceil_threshold = ceil_threshold
+        self._callbacks: List[
+            Tuple[Callable[..., None], Tuple[Any, ...], Dict[str, Any]]
+        ] = []
+
+    def register(
+        self, callback: Callable[..., None], *args: Any, **kwargs: Any
+    ) -> None:
+        self._callbacks.append((callback, args, kwargs))
+
+    def close(self) -> None:
+        self._callbacks.clear()
+
+    def start(self) -> Optional[asyncio.Handle]:
+        timeout = self._timeout
+        if timeout is not None and timeout > 0:
+            when = self._loop.time() + timeout
+            if timeout >= self._ceil_threshold:
+                when = ceil(when)
+            return self._loop.call_at(when, self.__call__)
+        else:
+            return None
+
+    def timer(self) -> "BaseTimerContext":
+        if self._timeout is not None and self._timeout > 0:
+            timer = TimerContext(self._loop)
+            self.register(timer.timeout)
+            return timer
+        else:
+            return TimerNoop()
+
+    def __call__(self) -> None:
+        for cb, args, kwargs in self._callbacks:
+            with suppress(Exception):
+                cb(*args, **kwargs)
+
+        self._callbacks.clear()
+
+
+class BaseTimerContext(ContextManager["BaseTimerContext"]):
+    def assert_timeout(self) -> None:
+        """Raise TimeoutError if timeout has been exceeded."""
+
+
+class TimerNoop(BaseTimerContext):
+    def __enter__(self) -> BaseTimerContext:
+        return self
+
+    def __exit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc_val: Optional[BaseException],
+        exc_tb: Optional[TracebackType],
+    ) -> None:
+        return
+
+
+class TimerContext(BaseTimerContext):
+    """Low resolution timeout context manager"""
+
+    def __init__(self, loop: asyncio.AbstractEventLoop) -> None:
+        self._loop = loop
+        self._tasks: List[asyncio.Task[Any]] = []
+        self._cancelled = False
+
+    def assert_timeout(self) -> None:
+        """Raise TimeoutError if timer has already been cancelled."""
+        if self._cancelled:
+            raise asyncio.TimeoutError from None
+
+    def __enter__(self) -> BaseTimerContext:
+        task = current_task(loop=self._loop)
+
+        if task is None:
+            raise RuntimeError(
+                "Timeout context manager should be used " "inside a task"
+            )
+
+        if self._cancelled:
+            raise asyncio.TimeoutError from None
+
+        self._tasks.append(task)
+        return self
+
+    def __exit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc_val: Optional[BaseException],
+        exc_tb: Optional[TracebackType],
+    ) -> Optional[bool]:
+        if self._tasks:
+            self._tasks.pop()
+
+        if exc_type is asyncio.CancelledError and self._cancelled:
+            raise asyncio.TimeoutError from None
+        return None
+
+    def timeout(self) -> None:
+        if not self._cancelled:
+            for task in set(self._tasks):
+                task.cancel()
+
+            self._cancelled = True
+
+
+def ceil_timeout(
+    delay: Optional[float], ceil_threshold: float = 5
+) -> async_timeout.Timeout:
+    if delay is None or delay <= 0:
+        return async_timeout.timeout(None)
+
+    loop = get_running_loop()
+    now = loop.time()
+    when = now + delay
+    if delay > ceil_threshold:
+        when = ceil(when)
+    return async_timeout.timeout_at(when)
+
+
+class HeadersMixin:
+    ATTRS = frozenset(["_content_type", "_content_dict", "_stored_content_type"])
+
+    _headers: MultiMapping[str]
+
+    _content_type: Optional[str] = None
+    _content_dict: Optional[Dict[str, str]] = None
+    _stored_content_type: Union[str, None, _SENTINEL] = sentinel
+
+    def _parse_content_type(self, raw: Optional[str]) -> None:
+        self._stored_content_type = raw
+        if raw is None:
+            # default value according to RFC 2616
+            self._content_type = "application/octet-stream"
+            self._content_dict = {}
+        else:
+            msg = HeaderParser().parsestr("Content-Type: " + raw)
+            self._content_type = msg.get_content_type()
+            params = msg.get_params(())
+            self._content_dict = dict(params[1:])  # First element is content type again
+
+    @property
+    def content_type(self) -> str:
+        """The value of content part for Content-Type HTTP header."""
+        raw = self._headers.get(hdrs.CONTENT_TYPE)
+        if self._stored_content_type != raw:
+            self._parse_content_type(raw)
+        return self._content_type  # type: ignore[return-value]
+
+    @property
+    def charset(self) -> Optional[str]:
+        """The value of charset part for Content-Type HTTP header."""
+        raw = self._headers.get(hdrs.CONTENT_TYPE)
+        if self._stored_content_type != raw:
+            self._parse_content_type(raw)
+        return self._content_dict.get("charset")  # type: ignore[union-attr]
+
+    @property
+    def content_length(self) -> Optional[int]:
+        """The value of Content-Length HTTP header."""
+        content_length = self._headers.get(hdrs.CONTENT_LENGTH)
+
+        if content_length is not None:
+            return int(content_length)
+        else:
+            return None
+
+
+def set_result(fut: "asyncio.Future[_T]", result: _T) -> None:
+    if not fut.done():
+        fut.set_result(result)
+
+
+_EXC_SENTINEL = BaseException()
+
+
+class ErrorableProtocol(Protocol):
+    def set_exception(
+        self,
+        exc: BaseException,
+        exc_cause: BaseException = ...,
+    ) -> None:
+        ...  # pragma: no cover
+
+
+def set_exception(
+    fut: "asyncio.Future[_T] | ErrorableProtocol",
+    exc: BaseException,
+    exc_cause: BaseException = _EXC_SENTINEL,
+) -> None:
+    """Set future exception.
+
+    If the future is marked as complete, this function is a no-op.
+
+    :param exc_cause: An exception that is a direct cause of ``exc``.
+                      Only set if provided.
+    """
+    if asyncio.isfuture(fut) and fut.done():
+        return
+
+    exc_is_sentinel = exc_cause is _EXC_SENTINEL
+    exc_causes_itself = exc is exc_cause
+    if not exc_is_sentinel and not exc_causes_itself:
+        exc.__cause__ = exc_cause
+
+    fut.set_exception(exc)
+
+
+@functools.total_ordering
+class AppKey(Generic[_T]):
+    """Keys for static typing support in Application."""
+
+    __slots__ = ("_name", "_t", "__orig_class__")
+
+    # This may be set by Python when instantiating with a generic type. We need to
+    # support this, in order to support types that are not concrete classes,
+    # like Iterable, which can't be passed as the second parameter to __init__.
+    __orig_class__: Type[object]
+
+    def __init__(self, name: str, t: Optional[Type[_T]] = None):
+        # Prefix with module name to help deduplicate key names.
+        frame = inspect.currentframe()
+        while frame:
+            if frame.f_code.co_name == "<module>":
+                module: str = frame.f_globals["__name__"]
+                break
+            frame = frame.f_back
+
+        self._name = module + "." + name
+        self._t = t
+
+    def __lt__(self, other: object) -> bool:
+        if isinstance(other, AppKey):
+            return self._name < other._name
+        return True  # Order AppKey above other types.
+
+    def __repr__(self) -> str:
+        t = self._t
+        if t is None:
+            with suppress(AttributeError):
+                # Set to type arg.
+                t = get_args(self.__orig_class__)[0]
+
+        if t is None:
+            t_repr = "<<Unknown>>"
+        elif isinstance(t, type):
+            if t.__module__ == "builtins":
+                t_repr = t.__qualname__
+            else:
+                t_repr = f"{t.__module__}.{t.__qualname__}"
+        else:
+            t_repr = repr(t)
+        return f"<AppKey({self._name}, type={t_repr})>"
+
+
+class ChainMapProxy(Mapping[Union[str, AppKey[Any]], Any]):
+    __slots__ = ("_maps",)
+
+    def __init__(self, maps: Iterable[Mapping[Union[str, AppKey[Any]], Any]]) -> None:
+        self._maps = tuple(maps)
+
+    def __init_subclass__(cls) -> None:
+        raise TypeError(
+            "Inheritance class {} from ChainMapProxy "
+            "is forbidden".format(cls.__name__)
+        )
+
+    @overload  # type: ignore[override]
+    def __getitem__(self, key: AppKey[_T]) -> _T:
+        ...
+
+    @overload
+    def __getitem__(self, key: str) -> Any:
+        ...
+
+    def __getitem__(self, key: Union[str, AppKey[_T]]) -> Any:
+        for mapping in self._maps:
+            try:
+                return mapping[key]
+            except KeyError:
+                pass
+        raise KeyError(key)
+
+    @overload  # type: ignore[override]
+    def get(self, key: AppKey[_T], default: _S) -> Union[_T, _S]:
+        ...
+
+    @overload
+    def get(self, key: AppKey[_T], default: None = ...) -> Optional[_T]:
+        ...
+
+    @overload
+    def get(self, key: str, default: Any = ...) -> Any:
+        ...
+
+    def get(self, key: Union[str, AppKey[_T]], default: Any = None) -> Any:
+        try:
+            return self[key]
+        except KeyError:
+            return default
+
+    def __len__(self) -> int:
+        # reuses stored hash values if possible
+        return len(set().union(*self._maps))
+
+    def __iter__(self) -> Iterator[Union[str, AppKey[Any]]]:
+        d: Dict[Union[str, AppKey[Any]], Any] = {}
+        for mapping in reversed(self._maps):
+            # reuses stored hash values if possible
+            d.update(mapping)
+        return iter(d)
+
+    def __contains__(self, key: object) -> bool:
+        return any(key in m for m in self._maps)
+
+    def __bool__(self) -> bool:
+        return any(self._maps)
+
+    def __repr__(self) -> str:
+        content = ", ".join(map(repr, self._maps))
+        return f"ChainMapProxy({content})"
+
+
+# https://tools.ietf.org/html/rfc7232#section-2.3
+_ETAGC = r"[!\x23-\x7E\x80-\xff]+"
+_ETAGC_RE = re.compile(_ETAGC)
+_QUOTED_ETAG = rf'(W/)?"({_ETAGC})"'
+QUOTED_ETAG_RE = re.compile(_QUOTED_ETAG)
+LIST_QUOTED_ETAG_RE = re.compile(rf"({_QUOTED_ETAG})(?:\s*,\s*|$)|(.)")
+
+ETAG_ANY = "*"
+
+
+@attr.s(auto_attribs=True, frozen=True, slots=True)
+class ETag:
+    value: str
+    is_weak: bool = False
+
+
+def validate_etag_value(value: str) -> None:
+    if value != ETAG_ANY and not _ETAGC_RE.fullmatch(value):
+        raise ValueError(
+            f"Value {value!r} is not a valid etag. Maybe it contains '\"'?"
+        )
+
+
+def parse_http_date(date_str: Optional[str]) -> Optional[datetime.datetime]:
+    """Process a date string, return a datetime object"""
+    if date_str is not None:
+        timetuple = parsedate(date_str)
+        if timetuple is not None:
+            with suppress(ValueError):
+                return datetime.datetime(*timetuple[:6], tzinfo=datetime.timezone.utc)
+    return None
+
+
+def must_be_empty_body(method: str, code: int) -> bool:
+    """Check if a request must return an empty body."""
+    return (
+        status_code_must_be_empty_body(code)
+        or method_must_be_empty_body(method)
+        or (200 <= code < 300 and method.upper() == hdrs.METH_CONNECT)
+    )
+
+
+def method_must_be_empty_body(method: str) -> bool:
+    """Check if a method must return an empty body."""
+    # https://datatracker.ietf.org/doc/html/rfc9112#section-6.3-2.1
+    # https://datatracker.ietf.org/doc/html/rfc9112#section-6.3-2.2
+    return method.upper() == hdrs.METH_HEAD
+
+
+def status_code_must_be_empty_body(code: int) -> bool:
+    """Check if a status code must return an empty body."""
+    # https://datatracker.ietf.org/doc/html/rfc9112#section-6.3-2.1
+    return code in {204, 304} or 100 <= code < 200
+
+
+def should_remove_content_length(method: str, code: int) -> bool:
+    """Check if a Content-Length header should be removed.
+
+    This should always be a subset of must_be_empty_body
+    """
+    # https://www.rfc-editor.org/rfc/rfc9110.html#section-8.6-8
+    # https://www.rfc-editor.org/rfc/rfc9110.html#section-15.4.5-4
+    return (
+        code in {204, 304}
+        or 100 <= code < 200
+        or (200 <= code < 300 and method.upper() == hdrs.METH_CONNECT)
+    )