122 lines
3.7 KiB
Python
122 lines
3.7 KiB
Python
# Pyrogram - Telegram MTProto API Client Library for Python
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# Copyright (C) 2017-2021 Dan <https://github.com/delivrance>
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#
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# This file is part of Pyrogram.
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#
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# Pyrogram is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Pyrogram is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with Pyrogram. If not, see <http://www.gnu.org/licenses/>.
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import asyncio
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import ipaddress
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import logging
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import socket
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import time
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try:
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import socks
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except ImportError as e:
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e.msg = (
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"PySocks is missing and Pyrogram can't run without. "
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"Please install it using \"pip3 install pysocks\"."
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)
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raise e
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log = logging.getLogger(__name__)
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class TCP:
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TIMEOUT = 10
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def __init__(self, ipv6: bool, proxy: dict):
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self.socket = None
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self.reader = None # type: asyncio.StreamReader
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self.writer = None # type: asyncio.StreamWriter
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self.lock = asyncio.Lock()
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self.loop = asyncio.get_event_loop()
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if proxy.get("enabled", False):
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hostname = proxy.get("hostname", None)
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port = proxy.get("port", None)
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try:
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ip_address = ipaddress.ip_address(hostname)
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except ValueError:
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self.socket = socks.socksocket(socket.AF_INET)
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else:
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if isinstance(ip_address, ipaddress.IPv6Address):
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self.socket = socks.socksocket(socket.AF_INET6)
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else:
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self.socket = socks.socksocket(socket.AF_INET)
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self.socket.set_proxy(
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proxy_type=socks.SOCKS5,
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addr=hostname,
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port=port,
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username=proxy.get("username", None),
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password=proxy.get("password", None)
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)
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log.info(f"Using proxy {hostname}:{port}")
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else:
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self.socket = socks.socksocket(
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socket.AF_INET6 if ipv6
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else socket.AF_INET
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)
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self.socket.settimeout(TCP.TIMEOUT)
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async def connect(self, address: tuple):
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self.socket.connect(address)
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self.reader, self.writer = await asyncio.open_connection(sock=self.socket)
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def close(self):
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try:
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self.writer.close()
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except AttributeError:
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try:
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self.socket.shutdown(socket.SHUT_RDWR)
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except OSError:
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pass
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finally:
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# A tiny sleep placed here helps avoiding .recv(n) hanging until the timeout.
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# This is a workaround that seems to fix the occasional delayed stop of a client.
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time.sleep(0.001)
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self.socket.close()
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async def send(self, data: bytes):
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async with self.lock:
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self.writer.write(data)
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await self.writer.drain()
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async def recv(self, length: int = 0):
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data = b""
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while len(data) < length:
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try:
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chunk = await asyncio.wait_for(
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self.reader.read(length - len(data)),
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TCP.TIMEOUT
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)
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except (OSError, asyncio.TimeoutError):
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return None
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else:
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if chunk:
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data += chunk
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else:
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return None
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return data
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