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jokes-bot-v3.0/venv/lib/python3.9/site-packages/telegram/request/_httpxrequest.py Normal file
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#!/usr/bin/env python
#
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015-2023
# Leandro Toledo de Souza <devs@python-telegram-bot.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 Public License for more details.
#
# You should have received a copy of the GNU Lesser Public License
# along with this program. If not, see [http://www.gnu.org/licenses/].
"""This module contains methods to make POST and GET requests using the httpx library."""
from typing import Optional, Tuple
import httpx
from telegram._utils.defaultvalue import DefaultValue
from telegram._utils.logging import get_logger
from telegram._utils.types import ODVInput
from telegram.error import NetworkError, TimedOut
from telegram.request._baserequest import BaseRequest
from telegram.request._requestdata import RequestData
# Note to future devs:
# Proxies are currently only tested manually. The httpx development docs have a nice guide on that:
# https://www.python-httpx.org/contributing/#development-proxy-setup (also saved on archive.org)
# That also works with socks5. Just pass `--mode socks5` to mitmproxy
_LOGGER = get_logger(__name__, "HTTPXRequest")
class HTTPXRequest(BaseRequest):
"""Implementation of :class:`~telegram.request.BaseRequest` using the library
`httpx <https://www.python-httpx.org>`_.
.. versionadded:: 20.0
Args:
connection_pool_size (:obj:`int`, optional): Number of connections to keep in the
connection pool. Defaults to ``1``.
Note:
Independent of the value, one additional connection will be reserved for
:meth:`telegram.Bot.get_updates`.
proxy_url (:obj:`str`, optional): The URL to the proxy server. For example
``'http://127.0.0.1:3128'`` or ``'socks5://127.0.0.1:3128'``. Defaults to :obj:`None`.
Note:
* The proxy URL can also be set via the environment variables ``HTTPS_PROXY`` or
``ALL_PROXY``. See `the docs of httpx`_ for more info.
* For Socks5 support, additional dependencies are required. Make sure to install
PTB via :command:`pip install python-telegram-bot[socks]` in this case.
* Socks5 proxies can not be set via environment variables.
.. _the docs of httpx: https://www.python-httpx.org/environment_variables/#proxies
read_timeout (:obj:`float` | :obj:`None`, optional): If passed, specifies the maximum
amount of time (in seconds) to wait for a response from Telegram's server.
This value is used unless a different value is passed to :meth:`do_request`.
Defaults to ``5``.
write_timeout (:obj:`float` | :obj:`None`, optional): If passed, specifies the maximum
amount of time (in seconds) to wait for a write operation to complete (in terms of
a network socket; i.e. POSTing a request or uploading a file).
This value is used unless a different value is passed to :meth:`do_request`.
Defaults to ``5``.
connect_timeout (:obj:`float` | :obj:`None`, optional): If passed, specifies the
maximum amount of time (in seconds) to wait for a connection attempt to a server
to succeed. This value is used unless a different value is passed to
:meth:`do_request`. Defaults to ``5``.
pool_timeout (:obj:`float` | :obj:`None`, optional): If passed, specifies the maximum
amount of time (in seconds) to wait for a connection to become available.
This value is used unless a different value is passed to :meth:`do_request`.
Defaults to ``1``.
Warning:
With a finite pool timeout, you must expect :exc:`telegram.error.TimedOut`
exceptions to be thrown when more requests are made simultaneously than there are
connections in the connection pool!
http_version (:obj:`str`, optional): If ``"2"``, HTTP/2 will be used instead of HTTP/1.1.
Defaults to ``"1.1"``.
.. versionadded:: 20.1
.. versionchanged:: 20.2
Reset the default version to 1.1.
"""
__slots__ = ("_client", "_client_kwargs", "_http_version")
def __init__(
self,
connection_pool_size: int = 1,
proxy_url: str = None,
read_timeout: Optional[float] = 5.0,
write_timeout: Optional[float] = 5.0,
connect_timeout: Optional[float] = 5.0,
pool_timeout: Optional[float] = 1.0,
http_version: str = "1.1",
):
self._http_version = http_version
timeout = httpx.Timeout(
connect=connect_timeout,
read=read_timeout,
write=write_timeout,
pool=pool_timeout,
)
limits = httpx.Limits(
max_connections=connection_pool_size,
max_keepalive_connections=connection_pool_size,
)
if http_version not in ("1.1", "2"):
raise ValueError("`http_version` must be either '1.1' or '2'.")
http1 = http_version == "1.1"
# See https://github.com/python-telegram-bot/python-telegram-bot/pull/3542
# for why we need to use `dict()` here.
self._client_kwargs = dict( # pylint: disable=use-dict-literal # noqa: C408
timeout=timeout,
proxies=proxy_url,
limits=limits,
http1=http1,
http2=not http1,
)
try:
self._client = self._build_client()
except ImportError as exc:
if "httpx[http2]" not in str(exc) and "httpx[socks]" not in str(exc):
raise exc
if "httpx[socks]" in str(exc):
raise RuntimeError(
"To use Socks5 proxies, PTB must be installed via `pip install "
"python-telegram-bot[socks]`."
) from exc
raise RuntimeError(
"To use HTTP/2, PTB must be installed via `pip install "
"python-telegram-bot[http2]`."
) from exc
@property
def http_version(self) -> str:
"""
:obj:`str`: Used HTTP version, see :paramref:`http_version`.
.. versionadded:: 20.2
"""
return self._http_version
def _build_client(self) -> httpx.AsyncClient:
return httpx.AsyncClient(**self._client_kwargs) # type: ignore[arg-type]
async def initialize(self) -> None:
"""See :meth:`BaseRequest.initialize`."""
if self._client.is_closed:
self._client = self._build_client()
async def shutdown(self) -> None:
"""See :meth:`BaseRequest.shutdown`."""
if self._client.is_closed:
_LOGGER.debug("This HTTPXRequest is already shut down. Returning.")
return
await self._client.aclose()
async def do_request(
self,
url: str,
method: str,
request_data: RequestData = None,
read_timeout: ODVInput[float] = BaseRequest.DEFAULT_NONE,
write_timeout: ODVInput[float] = BaseRequest.DEFAULT_NONE,
connect_timeout: ODVInput[float] = BaseRequest.DEFAULT_NONE,
pool_timeout: ODVInput[float] = BaseRequest.DEFAULT_NONE,
) -> Tuple[int, bytes]:
"""See :meth:`BaseRequest.do_request`."""
if self._client.is_closed:
raise RuntimeError("This HTTPXRequest is not initialized!")
# If user did not specify timeouts (for e.g. in a bot method), use the default ones when we
# created this instance.
if isinstance(read_timeout, DefaultValue):
read_timeout = self._client.timeout.read
if isinstance(write_timeout, DefaultValue):
write_timeout = self._client.timeout.write
if isinstance(connect_timeout, DefaultValue):
connect_timeout = self._client.timeout.connect
if isinstance(pool_timeout, DefaultValue):
pool_timeout = self._client.timeout.pool
timeout = httpx.Timeout(
connect=connect_timeout,
read=read_timeout,
write=write_timeout,
pool=pool_timeout,
)
# TODO p0: On Linux, use setsockopt to properly set socket level keepalive.
# (socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, 120)
# (socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, 30)
# (socket.IPPROTO_TCP, socket.TCP_KEEPCNT, 8)
# TODO p4: Support setsockopt on lesser platforms than Linux.
files = request_data.multipart_data if request_data else None
data = request_data.json_parameters if request_data else None
try:
res = await self._client.request(
method=method,
url=url,
headers={"User-Agent": self.USER_AGENT},
timeout=timeout,
files=files,
data=data,
)
except httpx.TimeoutException as err:
if isinstance(err, httpx.PoolTimeout):
raise TimedOut(
message=(
"Pool timeout: All connections in the connection pool are occupied. "
"Request was *not* sent to Telegram. Consider adjusting the connection "
"pool size or the pool timeout."
)
) from err
raise TimedOut from err
except httpx.HTTPError as err:
# HTTPError must come last as its the base httpx exception class
# TODO p4: do something smart here; for now just raise NetworkError
# We include the class name for easier debugging. Especially useful if the error
# message of `err` is empty.
raise NetworkError(f"httpx.{err.__class__.__name__}: {err}") from err
return res.status_code, res.content