MTPyroger/pyrogram/connection/transport/tcp/tcp_abridged.py

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# Pyrogram - Telegram MTProto API Client Library for Python
# Copyright (C) 2017-2020 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 logging
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from .tcp import TCP
log = logging.getLogger(__name__)
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class TCPAbridged(TCP):
def __init__(self, ipv6: bool, proxy: dict):
super().__init__(ipv6, proxy)
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async def connect(self, address: tuple):
await super().connect(address)
await super().send(b"\xef")
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async def send(self, data: bytes, *args):
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length = len(data) // 4
await super().send(
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(bytes([length])
if length <= 126
else b"\x7f" + length.to_bytes(3, "little"))
+ data
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)
async def recv(self, length: int = 0) -> bytes or None:
length = await super().recv(1)
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if length is None:
return None
if length == b"\x7f":
length = await super().recv(3)
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if length is None:
return None
return await super().recv(int.from_bytes(length, "little") * 4)