mirror of
https://github.com/LonamiWebs/Telethon.git
synced 2024-11-23 01:46:35 +03:00
47 lines
1.5 KiB
Python
47 lines
1.5 KiB
Python
"""
|
|
This module contains the class used to communicate with Telegram's servers
|
|
in plain text, when no authorization key has been created yet.
|
|
"""
|
|
import struct
|
|
|
|
from .mtprotostate import MTProtoState
|
|
from ..errors import BrokenAuthKeyError
|
|
from ..extensions import BinaryReader
|
|
|
|
|
|
class MTProtoPlainSender:
|
|
"""
|
|
MTProto Mobile Protocol plain sender
|
|
(https://core.telegram.org/mtproto/description#unencrypted-messages)
|
|
"""
|
|
def __init__(self, connection):
|
|
"""
|
|
Initializes the MTProto plain sender.
|
|
|
|
:param connection: the Connection to be used.
|
|
"""
|
|
self._state = MTProtoState(auth_key=None)
|
|
self._connection = connection
|
|
|
|
async def send(self, request):
|
|
"""
|
|
Sends and receives the result for the given request.
|
|
"""
|
|
body = bytes(request)
|
|
msg_id = self._state._get_new_msg_id()
|
|
await self._connection.send(
|
|
struct.pack('<QQi', 0, msg_id, len(body)) + body
|
|
)
|
|
|
|
body = await self._connection.recv()
|
|
if body == b'l\xfe\xff\xff': # -404 little endian signed
|
|
# Broken authorization, must reset the auth key
|
|
raise BrokenAuthKeyError()
|
|
|
|
with BinaryReader(body) as reader:
|
|
assert reader.read_long() == 0 # auth_key_id
|
|
assert reader.read_long() > msg_id # msg_id
|
|
assert reader.read_int() # length
|
|
# No need to read "length" bytes first, just read the object
|
|
return reader.tgread_object()
|