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156 lines
5.2 KiB
ReStructuredText
156 lines
5.2 KiB
ReStructuredText
.. _rpc-errors:
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==========
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RPC Errors
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==========
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RPC stands for Remote Procedure Call, and when the library raises
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a ``RPCError``, it's because you have invoked some of the API
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methods incorrectly (wrong parameters, wrong permissions, or even
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something went wrong on Telegram's server).
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You should import the errors from ``telethon.errors`` like so:
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.. code-block:: python
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from telethon import errors
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try:
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async with client.takeout() as takeout:
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...
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except errors.TakeoutInitDelayError as e:
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# ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ here we except TAKEOUT_INIT_DELAY
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print('Must wait', e.seconds, 'before takeout')
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There isn't any official list of all possible RPC errors, so the
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`list of known errors`_ is provided on a best-effort basis. When new methods
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are available, the list may be lacking since we simply don't know what errors
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can raise from them.
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Once we do find out about a new error and what causes it, the list is
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updated, so if you see an error without a specific class, do report it
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(and what method caused it)!.
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This list is used to generate documentation for the `raw API page`_.
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For example, if we want to know what errors can occur from
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`messages.sendMessage`_ we can simply navigate to its raw API page
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and find it has 24 known RPC errors at the time of writing.
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Base Errors
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===========
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All the "base" errors are listed in :ref:`telethon-errors`.
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Any other more specific error will be a subclass of these.
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If the library isn't aware of a specific error just yet, it will instead
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raise one of these superclasses. This means you may find stuff like this:
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.. code-block:: text
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telethon.errors.rpcbaseerrors.BadRequestError: RPCError 400: MESSAGE_POLL_CLOSED (caused by SendVoteRequest)
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If you do, make sure to open an issue or send a pull request to update the
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`list of known errors`_.
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Common Errors
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=============
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These are some of the errors you may normally need to deal with:
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- ``FloodWaitError`` (420), the same request was repeated many times.
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Must wait ``.seconds`` (you can access this attribute). For example:
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.. code-block:: python
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...
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from telethon import errors
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try:
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messages = await client.get_messages(chat)
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print(messages[0].text)
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except errors.FloodWaitError as e:
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print('Have to sleep', e.seconds, 'seconds')
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time.sleep(e.seconds)
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- ``SessionPasswordNeededError``, if you have setup two-steps
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verification on Telegram and are trying to sign in.
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- ``FilePartMissingError``, if you have tried to upload an empty file.
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- ``ChatAdminRequiredError``, you don't have permissions to perform
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said operation on a chat or channel. Try avoiding filters, i.e. when
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searching messages.
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The generic classes for different error codes are:
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- ``InvalidDCError`` (303), the request must be repeated on another DC.
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- ``BadRequestError`` (400), the request contained errors.
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- ``UnauthorizedError`` (401), the user is not authorized yet.
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- ``ForbiddenError`` (403), privacy violation error.
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- ``NotFoundError`` (404), make sure you're invoking ``Request``\ 's!
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If the error is not recognised, it will only be an ``RPCError``.
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You can refer to all errors from Python through the ``telethon.errors``
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module. If you don't know what attributes they have, try printing their
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dir (like ``print(dir(e))``).
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Attributes
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==========
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Some of the errors carry additional data in them. When they look like
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``EMAIL_UNCONFIRMED_X``, the ``_X`` value will be accessible from the
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error instance. The current list of errors that do this is the following:
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- ``EmailUnconfirmedError`` has ``.code_length``.
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- ``FileMigrateError`` has ``.new_dc``.
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- ``FilePartMissingError`` has ``.which``.
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- ``FloodTestPhoneWaitError`` has ``.seconds``.
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- ``FloodWaitError`` has ``.seconds``.
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- ``InterdcCallErrorError`` has ``.dc``.
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- ``InterdcCallRichErrorError`` has ``.dc``.
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- ``NetworkMigrateError`` has ``.new_dc``.
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- ``PhoneMigrateError`` has ``.new_dc``.
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- ``SlowModeWaitError`` has ``.seconds``.
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- ``TakeoutInitDelayError`` has ``.seconds``.
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- ``UserMigrateError`` has ``.new_dc``.
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Avoiding Limits
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===============
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Don't spam. You won't get ``FloodWaitError`` or your account banned or
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deleted if you use the library *for legit use cases*. Make cool tools.
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Don't spam! Nobody knows the exact limits for all requests since they
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depend on a lot of factors, so don't bother asking.
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Still, if you do have a legit use case and still get those errors, the
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library will automatically sleep when they are smaller than 60 seconds
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by default. You can set different "auto-sleep" thresholds:
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.. code-block:: python
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client.flood_sleep_threshold = 0 # Don't auto-sleep
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client.flood_sleep_threshold = 24 * 60 * 60 # Sleep always
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You can also except it and act as you prefer:
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.. code-block:: python
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from telethon.errors import FloodWaitError
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try:
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...
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except FloodWaitError as e:
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print('Flood waited for', e.seconds)
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quit(1)
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VoIP numbers are very limited, and some countries are more limited too.
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.. _list of known errors: https://github.com/LonamiWebs/Telethon/blob/master/telethon_generator/data/errors.csv
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.. _raw API page: https://tl.telethon.dev/
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.. _messages.sendMessage: https://tl.telethon.dev/methods/messages/send_message.html
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