MTPyroger/pyrogram/connection/connection.py

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# Pyrogram - Telegram MTProto API Client Library for Python
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# Copyright (C) 2017-present 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
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (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,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# 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
# along with Pyrogram. If not, see <http://www.gnu.org/licenses/>.
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import asyncio
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import logging
from typing import Optional
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from .transport import *
from ..session.internals import DataCenter
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log = logging.getLogger(__name__)
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class Connection:
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MAX_RETRIES = 3
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MODES = {
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0: TCPFull,
1: TCPAbridged,
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2: TCPIntermediate,
3: TCPAbridgedO,
4: TCPIntermediateO,
5: TCPPaddedIntermediate,
6: TCPPaddedIntermediateO
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}
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def __init__(self, dc_id: int, test_mode: bool, ipv6: bool, proxy: dict, media: bool = False, mode: int = 3):
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self.dc_id = dc_id
self.test_mode = test_mode
self.ipv6 = ipv6
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self.proxy = proxy
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self.media = media
self.address = DataCenter(dc_id, test_mode, ipv6, media)
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self.mode = self.MODES.get(mode, TCPAbridged)
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self.protocol = None # type: Optional[TCP]
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async def connect(self):
for i in range(Connection.MAX_RETRIES):
self.protocol = self.mode(self.ipv6, self.proxy)
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try:
log.info("Connecting...")
await self.protocol.connect(self.address)
except OSError as e:
log.warning(f"Unable to connect due to network issues: {e}")
self.protocol.close()
await asyncio.sleep(1)
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else:
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log.info("Connected! {} DC{}{} - IPv{} - {}".format(
"Test" if self.test_mode else "Production",
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self.dc_id,
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" (media)" if self.media else "",
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"6" if self.ipv6 else "4",
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self.mode.__name__,
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))
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break
else:
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log.warning("Connection failed! Retrying...")
raise TimeoutError
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def close(self):
self.protocol.close()
log.info("Disconnected")
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async def send(self, data: bytes):
try:
await self.protocol.send(data)
except Exception:
raise OSError
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async def recv(self) -> Optional[bytes]:
return await self.protocol.recv()