Deque index out of range

[lenisko]

When spamming channel with .ask life or death

then it is responding sometimes.. one time, sometimes two times same reply

[__WRITE FAILED] deque index out of range
Traceback (most recent call last):
File "/usr/lib/python2.7/asyncore.py", line 91, in write
obj.handle_write_event()
File "/usr/lib/python2.7/asyncore.py", line 468, in handle_write_event
self.handle_write()
File "/usr/lib/python2.7/asynchat.py", line 174, in handle_write
self.initiate_send()
File "/usr/lib/python2.7/asynchat.py", line 244, in initiate_send
del self.producer_fifo[0]
IndexError: deque index out of range

Traceback (most recent call last):
File "/usr/lib/python2.7/asyncore.py", line 91, in write
obj.handle_write_event()
File "/usr/lib/python2.7/asyncore.py", line 468, in handle_write_event
self.handle_write()
File "/usr/lib/python2.7/asynchat.py", line 174, in handle_write
self.initiate_send()
File "/usr/lib/python2.7/asynchat.py", line 244, in initiate_send
del self.producer_fifo[0]
IndexError: deque index out of range

Traceback (most recent call last):
File "/usr/lib/python2.7/asyncore.py", line 91, in write
obj.handle_write_event()
File "/usr/lib/python2.7/asyncore.py", line 468, in handle_write_event
self.handle_write()
File "/usr/lib/python2.7/asynchat.py", line 174, in handle_write
self.initiate_send()
File "/usr/lib/python2.7/asynchat.py", line 244, in initiate_send
del self.producer_fifo[0]
IndexError: deque index out of range

1426382434.1
[__WRITE FAILED] deque index out of range
1426382441.33
[__WRITE FAILED] deque index out of range

[kaneda]

This is an inherent issue with multi-threading. Jenni can't have a response lock otherwise it would break threading, therefore this isn't an issue that can be easily solved. @myano any thoughts?

[lenisko]

Hmm, maybe something is wrong with priority, after changing it to medium, it's working like it should.
So.. maybe 'low' priority is 'bad'.

[kaneda]

@lenisko I'm not sure about that. I'll let @myano comment.

[lenisko]

Hmm, even on simple info.py I'm getting:
[__WRITE FAILED] deque index out of range && duplicated respond

edit:
it's weird... after after excluding some scripts:
#'quote', 'remind', 'roulette', 'rss', 'scores', 'slap', 'tell', 'tld', 'unicode', 'weather', 'wikiquote']

I have this error, but without exclude I'm not getting it :o

[kaneda]

@lenisko if I had to guess I'd say you could get this error with any script at any time, depending. It's caused by asynchronicity, meaning that a job may be fired off to the async server twice before call-back is received.

[kaneda]

Discussed w/ @myano, don't think this has any reasonable resolution.

[lenisko]

Ohh... but well, it's weird to see two outputs sometimes... but so far no crash from this.

[myano]

If I remember correctly, the code here was added to prevent crashes when a double message was sent. As for preventing the double-output, there have been numerous attempts at this over the years, as this problem has existed since the days of 'phenny'. There have even been patches back-ported from Willie to attempt to fix this but it doesn't seem there is a solution insight for this, sadly. :-(

[lenisko]

Hmm, weird solution. Sad there is no fix : /

I'm having weird issue right now, maybe it's related, maybe not.
Bot is working like it should, my modules too.
After some time, bot stops responding to anything, then: Ping timeout: 240 seconds, no rejoin.
Inside bot console no errors, script seems to be still working.

[lenisko]

Okay, I have fixed it using sleep....
#160