mirror of
https://github.com/LonamiWebs/Telethon.git
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75 lines
2.0 KiB
Python
75 lines
2.0 KiB
Python
"""
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This module holds the abstract `Connection` class.
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The `Connection.send` and `Connection.recv` methods need **not** to be
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safe across several tasks and may use any amount of ``await`` keywords.
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The code using these `Connection`'s should be responsible for using
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an ``async with asyncio.Lock:`` block when calling said methods.
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Said subclasses need not to worry about reconnecting either, and
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should let the errors propagate instead.
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"""
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import abc
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class Connection(abc.ABC):
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"""
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Represents an abstract connection for Telegram.
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Subclasses should implement the actual protocol
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being used when encoding/decoding messages.
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"""
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def __init__(self, *, loop, timeout, proxy=None):
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"""
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Initializes a new connection.
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:param loop: the event loop to be used.
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:param timeout: timeout to be used for all operations.
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:param proxy: whether to use a proxy or not.
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"""
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self._loop = loop
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self._proxy = proxy
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self._timeout = timeout
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@abc.abstractmethod
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async def connect(self, ip, port):
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raise NotImplementedError
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@abc.abstractmethod
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def get_timeout(self):
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"""Returns the timeout used by the connection."""
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raise NotImplementedError
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@abc.abstractmethod
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def is_connected(self):
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"""
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Determines whether the connection is alive or not.
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:return: true if it's connected.
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"""
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raise NotImplementedError
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@abc.abstractmethod
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async def close(self):
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"""Closes the connection."""
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raise NotImplementedError
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def clone(self):
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"""Creates a copy of this Connection."""
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return self.__class__(
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loop=self._loop,
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proxy=self._proxy,
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timeout=self._timeout
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)
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@abc.abstractmethod
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async def recv(self):
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"""Receives and unpacks a message"""
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raise NotImplementedError
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@abc.abstractmethod
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async def send(self, message):
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"""Encapsulates and sends the given message"""
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raise NotImplementedError
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