Telethon/readthedocs/concepts/errors.rst
2019-05-09 12:50:09 +02:00

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.. _rpc-errors:
==========
RPC Errors
==========
RPC stands for Remote Procedure Call, and when the library raises
a ``RPCError``, it's because you have invoked some of the API
methods incorrectly (wrong parameters, wrong permissions, or even
something went wrong on Telegram's server). All the errors are
available in :ref:`telethon-errors`, but some examples are:
- ``FloodWaitError`` (420), the same request was repeated many times.
Must wait ``.seconds`` (you can access this attribute). For example:
.. code-block:: python
...
from telethon import errors
try:
print(client.get_messages(chat)[0].text)
except errors.FloodWaitError as e:
print('Have to sleep', e.seconds, 'seconds')
time.sleep(e.seconds)
- ``SessionPasswordNeededError``, if you have setup two-steps
verification on Telegram.
- ``CdnFileTamperedError``, if the media you were trying to download
from a CDN has been altered.
- ``ChatAdminRequiredError``, you don't have permissions to perform
said operation on a chat or channel. Try avoiding filters, i.e. when
searching messages.
The generic classes for different error codes are:
- ``InvalidDCError`` (303), the request must be repeated on another DC.
- ``BadRequestError`` (400), the request contained errors.
- ``UnauthorizedError`` (401), the user is not authorized yet.
- ``ForbiddenError`` (403), privacy violation error.
- ``NotFoundError`` (404), make sure you're invoking ``Request``\ 's!
If the error is not recognised, it will only be an ``RPCError``.
You can refer to all errors from Python through the ``telethon.errors``
module. If you don't know what attributes they have, try printing their
dir (like ``print(dir(e))``).
Avoiding Limits
===============
Don't spam. You won't get ``FloodWaitError`` or your account banned or
deleted if you use the library *for legit use cases*. Make cool tools.
Don't spam! Nobody knows the exact limits for all requests since they
depend on a lot of factors, so don't bother asking.
Still, if you do have a legit use case and still get those errors, the
library will automatically sleep when they are smaller than 60 seconds
by default. You can set different "auto-sleep" thresholds:
.. code-block:: python
client.flood_sleep_threshold = 0 # Don't auto-sleep
client.flood_sleep_threshold = 24 * 60 * 60 # Sleep always
You can also except it and act as you prefer:
.. code-block:: python
from telethon.errors import FloodWaitError
try:
...
except FloodWaitError as e:
print('Flood waited for', e.seconds)
quit(1)
VoIP numbers are very limited, and some countries are more limited too.