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			260 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			260 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
from __future__ import annotations
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import io
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import math
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import re
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import urllib.parse
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from ._helper import InstanceStoreMixin, select_proxy
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from .common import (
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    Features,
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    Request,
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    Response,
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    register_preference,
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    register_rh,
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)
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from .exceptions import (
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    CertificateVerifyError,
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    HTTPError,
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    IncompleteRead,
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    ProxyError,
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    SSLError,
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    TransportError,
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)
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from .impersonate import ImpersonateRequestHandler, ImpersonateTarget
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from ..dependencies import curl_cffi, certifi
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from ..utils import int_or_none
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if curl_cffi is None:
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    raise ImportError('curl_cffi is not installed')
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curl_cffi_version = tuple(map(int, re.split(r'[^\d]+', curl_cffi.__version__)[:3]))
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if curl_cffi_version != (0, 5, 10) and not ((0, 7, 0) <= curl_cffi_version < (0, 7, 2)):
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    curl_cffi._yt_dlp__version = f'{curl_cffi.__version__} (unsupported)'
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    raise ImportError('Only curl_cffi versions 0.5.10, 0.7.0 and 0.7.1 are supported')
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import curl_cffi.requests
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from curl_cffi.const import CurlECode, CurlOpt
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class CurlCFFIResponseReader(io.IOBase):
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    def __init__(self, response: curl_cffi.requests.Response):
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        self._response = response
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        self._iterator = response.iter_content()
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        self._buffer = b''
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        self.bytes_read = 0
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    def readable(self):
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        return True
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    def read(self, size=None):
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        exception_raised = True
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        try:
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            while self._iterator and (size is None or len(self._buffer) < size):
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                chunk = next(self._iterator, None)
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                if chunk is None:
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                    self._iterator = None
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                    break
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                self._buffer += chunk
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                self.bytes_read += len(chunk)
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            if size is None:
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                size = len(self._buffer)
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            data = self._buffer[:size]
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            self._buffer = self._buffer[size:]
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            # "free" the curl instance if the response is fully read.
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            # curl_cffi doesn't do this automatically and only allows one open response per thread
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            if not self._iterator and not self._buffer:
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                self.close()
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            exception_raised = False
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            return data
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        finally:
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            if exception_raised:
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                self.close()
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    def close(self):
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        if not self.closed:
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            self._response.close()
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            self._buffer = b''
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        super().close()
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class CurlCFFIResponseAdapter(Response):
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    fp: CurlCFFIResponseReader
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    def __init__(self, response: curl_cffi.requests.Response):
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        super().__init__(
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            fp=CurlCFFIResponseReader(response),
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            headers=response.headers,
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            url=response.url,
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            status=response.status_code)
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    def read(self, amt=None):
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        try:
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            return self.fp.read(amt)
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        except curl_cffi.requests.errors.RequestsError as e:
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            if e.code == CurlECode.PARTIAL_FILE:
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                content_length = int_or_none(e.response.headers.get('Content-Length'))
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                raise IncompleteRead(
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                    partial=self.fp.bytes_read,
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                    expected=content_length - self.fp.bytes_read if content_length is not None else None,
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                    cause=e) from e
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            raise TransportError(cause=e) from e
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@register_rh
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class CurlCFFIRH(ImpersonateRequestHandler, InstanceStoreMixin):
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    RH_NAME = 'curl_cffi'
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    _SUPPORTED_URL_SCHEMES = ('http', 'https')
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    _SUPPORTED_FEATURES = (Features.NO_PROXY, Features.ALL_PROXY)
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    _SUPPORTED_PROXY_SCHEMES = ('http', 'https', 'socks4', 'socks4a', 'socks5', 'socks5h')
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    _SUPPORTED_IMPERSONATE_TARGET_MAP = {
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        **({
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            ImpersonateTarget('chrome', '124', 'macos', '14'): curl_cffi.requests.BrowserType.chrome124,
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            ImpersonateTarget('chrome', '123', 'macos', '14'): curl_cffi.requests.BrowserType.chrome123,
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            ImpersonateTarget('chrome', '120', 'macos', '14'): curl_cffi.requests.BrowserType.chrome120,
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            ImpersonateTarget('chrome', '119', 'macos', '14'): curl_cffi.requests.BrowserType.chrome119,
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            ImpersonateTarget('chrome', '116', 'windows', '10'): curl_cffi.requests.BrowserType.chrome116,
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        } if curl_cffi_version >= (0, 7, 0) else {}),
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        ImpersonateTarget('chrome', '110', 'windows', '10'): curl_cffi.requests.BrowserType.chrome110,
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        ImpersonateTarget('chrome', '107', 'windows', '10'): curl_cffi.requests.BrowserType.chrome107,
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        ImpersonateTarget('chrome', '104', 'windows', '10'): curl_cffi.requests.BrowserType.chrome104,
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        ImpersonateTarget('chrome', '101', 'windows', '10'): curl_cffi.requests.BrowserType.chrome101,
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        ImpersonateTarget('chrome', '100', 'windows', '10'): curl_cffi.requests.BrowserType.chrome100,
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        ImpersonateTarget('chrome', '99', 'windows', '10'): curl_cffi.requests.BrowserType.chrome99,
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        ImpersonateTarget('edge', '101', 'windows', '10'): curl_cffi.requests.BrowserType.edge101,
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        ImpersonateTarget('edge', '99', 'windows', '10'): curl_cffi.requests.BrowserType.edge99,
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        **({
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            ImpersonateTarget('safari', '17.0', 'macos', '14'): curl_cffi.requests.BrowserType.safari17_0,
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        } if curl_cffi_version >= (0, 7, 0) else {}),
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        ImpersonateTarget('safari', '15.5', 'macos', '12'): curl_cffi.requests.BrowserType.safari15_5,
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        ImpersonateTarget('safari', '15.3', 'macos', '11'): curl_cffi.requests.BrowserType.safari15_3,
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        ImpersonateTarget('chrome', '99', 'android', '12'): curl_cffi.requests.BrowserType.chrome99_android,
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        **({
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            ImpersonateTarget('safari', '17.2', 'ios', '17.2'): curl_cffi.requests.BrowserType.safari17_2_ios,
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        } if curl_cffi_version >= (0, 7, 0) else {}),
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    }
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    def _create_instance(self, cookiejar=None):
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        return curl_cffi.requests.Session(cookies=cookiejar)
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    def _check_extensions(self, extensions):
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        super()._check_extensions(extensions)
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        extensions.pop('impersonate', None)
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        extensions.pop('cookiejar', None)
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        extensions.pop('timeout', None)
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        # CurlCFFIRH ignores legacy ssl options currently.
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        # Impersonation generally uses a looser SSL configuration than urllib/requests.
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        extensions.pop('legacy_ssl', None)
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    def send(self, request: Request) -> Response:
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        target = self._get_request_target(request)
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        try:
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            response = super().send(request)
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        except HTTPError as e:
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            e.response.extensions['impersonate'] = target
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            raise
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        response.extensions['impersonate'] = target
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        return response
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    def _send(self, request: Request):
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        max_redirects_exceeded = False
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        session: curl_cffi.requests.Session = self._get_instance(
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            cookiejar=self._get_cookiejar(request) if 'cookie' not in request.headers else None)
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        if self.verbose:
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            session.curl.setopt(CurlOpt.VERBOSE, 1)
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        proxies = self._get_proxies(request)
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        if 'no' in proxies:
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            session.curl.setopt(CurlOpt.NOPROXY, proxies['no'])
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            proxies.pop('no', None)
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        # curl doesn't support per protocol proxies, so we select the one that matches the request protocol
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        proxy = select_proxy(request.url, proxies=proxies)
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        if proxy:
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            session.curl.setopt(CurlOpt.PROXY, proxy)
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            scheme = urllib.parse.urlparse(request.url).scheme.lower()
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            if scheme != 'http':
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                # Enable HTTP CONNECT for HTTPS urls.
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                # Don't use CONNECT for http for compatibility with urllib behaviour.
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                # See: https://curl.se/libcurl/c/CURLOPT_HTTPPROXYTUNNEL.html
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                session.curl.setopt(CurlOpt.HTTPPROXYTUNNEL, 1)
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            # curl_cffi does not currently set these for proxies
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            session.curl.setopt(CurlOpt.PROXY_CAINFO, certifi.where())
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            if not self.verify:
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                session.curl.setopt(CurlOpt.PROXY_SSL_VERIFYPEER, 0)
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                session.curl.setopt(CurlOpt.PROXY_SSL_VERIFYHOST, 0)
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        headers = self._get_impersonate_headers(request)
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        if self._client_cert:
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            session.curl.setopt(CurlOpt.SSLCERT, self._client_cert['client_certificate'])
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            client_certificate_key = self._client_cert.get('client_certificate_key')
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            client_certificate_password = self._client_cert.get('client_certificate_password')
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            if client_certificate_key:
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                session.curl.setopt(CurlOpt.SSLKEY, client_certificate_key)
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            if client_certificate_password:
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                session.curl.setopt(CurlOpt.KEYPASSWD, client_certificate_password)
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        timeout = self._calculate_timeout(request)
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        # set CURLOPT_LOW_SPEED_LIMIT and CURLOPT_LOW_SPEED_TIME to act as a read timeout. [1]
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        # This is required only for 0.5.10 [2]
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        # Note: CURLOPT_LOW_SPEED_TIME is in seconds, so we need to round up to the nearest second. [3]
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        # [1] https://unix.stackexchange.com/a/305311
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        # [2] https://github.com/yifeikong/curl_cffi/issues/156
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        # [3] https://curl.se/libcurl/c/CURLOPT_LOW_SPEED_TIME.html
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        session.curl.setopt(CurlOpt.LOW_SPEED_LIMIT, 1)  # 1 byte per second
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        session.curl.setopt(CurlOpt.LOW_SPEED_TIME, math.ceil(timeout))
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        try:
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            curl_response = session.request(
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                method=request.method,
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                url=request.url,
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                headers=headers,
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                data=request.data,
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                verify=self.verify,
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                max_redirects=5,
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                timeout=(timeout, timeout),
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                impersonate=self._SUPPORTED_IMPERSONATE_TARGET_MAP.get(
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                    self._get_request_target(request)),
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                interface=self.source_address,
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                stream=True,
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            )
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        except curl_cffi.requests.errors.RequestsError as e:
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            if e.code == CurlECode.PEER_FAILED_VERIFICATION:
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                raise CertificateVerifyError(cause=e) from e
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            elif e.code == CurlECode.SSL_CONNECT_ERROR:
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                raise SSLError(cause=e) from e
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            elif e.code == CurlECode.TOO_MANY_REDIRECTS:
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                max_redirects_exceeded = True
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                curl_response = e.response
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            elif (
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                e.code == CurlECode.PROXY
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                or (e.code == CurlECode.RECV_ERROR and 'CONNECT' in str(e))
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            ):
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                raise ProxyError(cause=e) from e
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            else:
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                raise TransportError(cause=e) from e
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        response = CurlCFFIResponseAdapter(curl_response)
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        if not 200 <= response.status < 300:
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            raise HTTPError(response, redirect_loop=max_redirects_exceeded)
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        return response
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@register_preference(CurlCFFIRH)
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def curl_cffi_preference(rh, request):
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    return -100
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