TypeError: list indices must be integers, not str

[majek]

I receive this error:

Traceback (most recent call last):
  File "venv/lib/python2.6/site-packages/ws4py/client/threadedclient.py", line 93, in _receive
    next_size = s.parser.send(bytes)
  File "venv/lib/python2.6/site-packages/ws4py/streaming.py", line 181, in receiver
    is_valid, _, _, _ = utf8validator.validate(bytes)
  File "venv/lib/python2.6/site-packages/ws4py/utf8validator.py", line 108, in validate
    self.state = Utf8Validator.UTF8VALIDATOR_DFA[256 + (self.state << 4) + Utf8Validator.UTF8VALIDATOR_DFA[ba[i]]]
TypeError: list indices must be integers, not str

[Lawouach]

Hey Majek,

Could your provide more context please?

[majek]

Sure, but that's not going to be easy :)

1. install node and recent faye-websocket-node ( by recent I mean: from sources, not npm)

2. run the code from faye-websocket-node readme. (ie: echo example), like this: https://gist.github.com/b598c88f99b881f296cd

virtualenv venv
./venv/bin/pip install git+https://github.com/Lawouach/WebSocket-for-Python.git

At that point run this code: https://gist.github.com/0418dc998fd7ec5b3d4e

4. Observe:

$ ./venv/bin/python  a.py 
None
Traceback (most recent call last):
  File "/tmp/venv/lib/python2.6/site-packages/ws4py/client/threadedclient.py", line 93, in _receive
    next_size = s.parser.send(bytes)
  File "/tmp/venv/lib/python2.6/site-packages/ws4py/streaming.py", line 181, in receiver
    is_valid, _, _, _ = utf8validator.validate(bytes)
  File "/tmp/venv/lib/python2.6/site-packages/ws4py/utf8validator.py", line 108, in validate
    self.state = Utf8Validator.UTF8VALIDATOR_DFA[256 + (self.state << 4) + Utf8Validator.UTF8VALIDATOR_DFA[ba[i]]]
TypeError: list indices must be integers, not str

[Lawouach]

I see :)

If I may ask you if it's possible that you narrow what bytes were sent to ws4py when it failed? Perhaps catching the exception in ws4py?

[Lawouach]

This should be fixed with commit 37788d7

Don't hesitate to reopen if you see it coming up again.