telethon.errors.rpcerrorlist.FileReferenceExpiredError: 文件引用已过期且不再有效

Question

版本：

python: 3.10.12
telethon: 1.34.0

下面的代码可以从Telegram下载媒体文件。

import asyncio
import tempfile

from telethon import TelegramClient
from telethon.tl.types import MessageMediaDocument, User


async def download_media(client, dialog):
    total_downloads = 0
    async for message in client.iter_messages(dialog):
        if isinstance(message.media, MessageMediaDocument):
            with tempfile.TemporaryFile('wb') as tmp:
                print(f'\rtotal downloads: {total_downloads}', end='')
                await client.download_media(message, tmp.name)
                process_video(tmp.name)  # time consuming
                total_downloads += 1


async def main():
    api_id = 'API_ID'
    api_hash = 'API_HASH'
    client = TelegramClient('SESSION', api_id, api_hash)
    await client.start(phone='PHONE')
    async for dialog in client.iter_dialogs():
        if isinstance(dialog.entity, User) and dialog.entity.first_name in (
            'NAME1',
            'NAME2',
        ):
            await download_media(client, dialog)


if __name__ == '__main__':
    asyncio.run(main())

它运行得很顺利，下载了一些文件，但过了一段时间后，就开始出现问题。首先，我开始收到像这样的重复消息：

total downloads: 0
Server sent a very old message with ID 7350958896137580545, ignoring (see FAQ for details)
Server sent a very old message with ID 7350958902767389697, ignoring (see FAQ for details)
Server sent a very old message with ID 7350958906952594433, ignoring (see FAQ for details)
Server sent a very old message with ID 7350959031208322049, ignoring (see FAQ for details)
Server sent a very old message with ID 7350959159667548161, ignoring (see FAQ for details)
Server sent a very old message with ID 7350959289209278465, ignoring (see FAQ for details)
Server sent a very old message with ID 7350959417536965633, ignoring (see FAQ for details)
Server sent a very old message with ID 7350959546499766273, ignoring (see FAQ for details)
Server sent a very old message with ID 7350959676516447233, ignoring (see FAQ for details)
Server sent a very old message with ID 7350963570432817153, ignoring (see FAQ for details)
Security error while unpacking a received message: Too many messages had to be ignored consecutively
Server sent a very old message with ID 7350963636540084225, ignoring (see FAQ for details)
Security error while unpacking a received message: Too many messages had to be ignored consecutively
total downloads: 1

它能工作一段时间，文件也能下载，但之后就会出现异常，如果尝试重新下载同一条消息，就会不断出现这个问题。

Traceback (most recent call last):
  File "/download/telegram.py", line 14, in download_video
    await client.download_media(
  File "/usr/local/lib/python3.10/dist-packages/telethon/client/downloads.py", line 422, in download_media
    return await self._download_document(
  File "/usr/local/lib/python3.10/dist-packages/telethon/client/downloads.py", line 895, in _download_document
    result = await self._download_file(
  File "/usr/local/lib/python3.10/dist-packages/telethon/client/downloads.py", line 545, in _download_file
    async for chunk in self._iter_download(
  File "/usr/local/lib/python3.10/dist-packages/telethon/requestiter.py", line 74, in __anext__
    if await self._load_next_chunk():
  File "/usr/local/lib/python3.10/dist-packages/telethon/client/downloads.py", line 66, in _load_next_chunk
    cur = await self._request()
  File "/usr/local/lib/python3.10/dist-packages/telethon/client/downloads.py", line 76, in _request
    result = await self.client._call(self._sender, self.request)
  File "/usr/local/lib/python3.10/dist-packages/telethon/client/users.py", line 87, in _call
    result = await future
telethon.errors.rpcerrorlist.FileReferenceExpiredError: The file reference has expired and is no longer valid or it belongs to self-destructing media and cannot be resent (caused by GetFileRequest)

编辑

我通过把 telethon 替换成 telethon.sync 客户端，并根据 Lonami 的回答按ID获取消息，解决了这个问题。

telegram telethon exception handling media file download file reference error rpc error message retrieval client implementation

telethon.errors.rpcerrorlist.FileReferenceExpiredError: 文件引用已过期且不再有效

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