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Added SOCKSConnection creation into connection pool. Moved SOCKSConne…
…ction to the dedicated file to hide this class under socksio import check
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| from ssl import SSLContext | ||
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| from socksio import socks5 | ||
|
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||
| from .._backends.auto import AsyncBackend, AsyncSocketStream | ||
| from .._exceptions import ProxyError | ||
| from .._types import Origin, Socks5ProxyCredentials, TimeoutDict | ||
| from .._utils import get_logger | ||
| from .connection import AsyncHTTPConnection | ||
|
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| logger = get_logger(__name__) | ||
|
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| class AsyncSOCKSConnection(AsyncHTTPConnection): | ||
| def __init__( | ||
| self, | ||
| origin: Origin, | ||
| http2: bool = False, | ||
| uds: str = None, | ||
| ssl_context: SSLContext = None, | ||
| socket: AsyncSocketStream = None, | ||
| local_address: str = None, | ||
| backend: AsyncBackend = None, | ||
| *, | ||
| proxy_origin: Origin, | ||
| proxy_credentials: Socks5ProxyCredentials = None, | ||
| ): | ||
| assert proxy_origin[0] in (b"socks5",) | ||
|
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||
| super().__init__( | ||
| origin, http2, uds, ssl_context, socket, local_address, backend | ||
| ) | ||
| self.proxy_origin = proxy_origin | ||
| self.proxy_connection = socks5.SOCKS5Connection() | ||
| self.proxy_credentials = proxy_credentials | ||
|
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| async def _open_socket(self, timeout: TimeoutDict = None) -> AsyncSocketStream: | ||
| _, proxy_hostname, proxy_port = self.proxy_origin | ||
| scheme, hostname, port = self.origin | ||
| ssl_context = self.ssl_context if scheme == b"https" else None | ||
| timeout = timeout or {} | ||
|
|
||
| try: | ||
| proxy_socket = await self.backend.open_tcp_stream( | ||
| proxy_hostname, | ||
| proxy_port, | ||
| None, | ||
| timeout, | ||
| local_address=self.local_address, | ||
| ) | ||
|
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| await self._auth_proxy(proxy_socket, timeout) | ||
| await self._connect_through_proxy(proxy_socket, hostname, port, timeout) | ||
|
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||
| if ssl_context: | ||
| proxy_socket = await proxy_socket.start_tls( | ||
| hostname, ssl_context, timeout | ||
| ) | ||
|
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| return proxy_socket | ||
| except Exception: # noqa: PIE786 | ||
| self.connect_failed = True | ||
| raise | ||
|
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||
| async def _auth_proxy( | ||
| self, socket: AsyncSocketStream, timeout: TimeoutDict | ||
| ) -> None: | ||
| auth_request = socks5.SOCKS5AuthMethodsRequest( | ||
| [ | ||
| socks5.SOCKS5AuthMethod.NO_AUTH_REQUIRED, | ||
| socks5.SOCKS5AuthMethod.USERNAME_PASSWORD, | ||
| ] | ||
| ) | ||
|
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| self.proxy_connection.send(auth_request) | ||
|
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| bytes_to_send = self.proxy_connection.data_to_send() | ||
| await socket.write(bytes_to_send, timeout) | ||
|
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| data = await socket.read(1024, timeout) | ||
| auth_ev = self.proxy_connection.receive_data(data) | ||
|
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| if auth_ev.method == socks5.SOCKS5AuthMethod.USERNAME_PASSWORD: # type: ignore | ||
| if self.proxy_credentials is None: | ||
| raise ProxyError( | ||
| "This proxy requires auth, but you didn't set user/password" | ||
| ) | ||
|
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||
| user, password = self.proxy_credentials | ||
| user_password_request = socks5.SOCKS5UsernamePasswordRequest(user, password) | ||
| self.proxy_connection.send(user_password_request) | ||
| await socket.write(self.proxy_connection.data_to_send(), timeout) | ||
| user_password_response = await socket.read(2048, timeout) | ||
|
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| user_password_event = self.proxy_connection.receive_data( | ||
| user_password_response | ||
| ) | ||
|
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| if not user_password_event.success: # type: ignore | ||
| raise ProxyError("Invalid user/password provided to proxy auth") | ||
|
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| async def _connect_through_proxy( | ||
| self, | ||
| socket: AsyncSocketStream, | ||
| hostname: bytes, | ||
| port: int, | ||
| timeout: TimeoutDict, | ||
| ) -> None: | ||
| connect_request = socks5.SOCKS5CommandRequest.from_address( | ||
| socks5.SOCKS5Command.CONNECT, (hostname, port) | ||
| ) | ||
|
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| self.proxy_connection.send(connect_request) | ||
| bytes_to_send = self.proxy_connection.data_to_send() | ||
|
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| await socket.write(bytes_to_send, timeout) | ||
| data = await socket.read(1024, timeout) | ||
| event = self.proxy_connection.receive_data(data) | ||
|
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| # development only assert | ||
| assert event.reply_code == socks5.SOCKS5ReplyCode.SUCCEEDED # type: ignore |
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