[Zope-dev] ZServer(FCGI) stability

[Pavlos Christoforou]

Hello -

Unfortunately our site which runs both under straight ZServer and through
FastCGI hangs and requires restarting every day. Here is some debuging
info (Zope-2.1.3).

Unhandled exception in thread: Traceback (innermost last):
  File "/usr/local/Zope-2.1.3-src/ZServer/PubCore/ZServerPublisher.py",
line 97, in __init__
    response._finish()
  File "/usr/local/Zope-2.1.3-src/ZServer/FCGIServer.py", line 699, in
_finish
    'log_request'))
  File "/usr/local/Zope-2.1.3-src/ZServer/FCGIServer.py", line 564, in
push
    if send: self.initiate_send()
  File "/usr/local/Zope-2.1.3-src/ZServer/medusa/asynchat.py", line 206,
in initiate_send
    self.refill_buffer()
  File "/usr/local/Zope-2.1.3-src/ZServer/medusa/asynchat.py", line 190,
in refill_buffer
    self.producer_fifo.pop()
  File "/usr/local/Zope-2.1.3-src/ZServer/medusa/asynchat.py", line 264,
in pop
    del self.list[0]
IndexError: list assignment index out of range 


I suppose I could modify the fifo class in asynchat to check for empty
self.list before attempting to index it, but I believe such a situation
should not normally arise (ie calling del self.list[0] on an empty list).
Seems to me that the problem is with FCGIServer.py. 

As I need a temporary solution *quickly* I will modify the fifo class and
hopefully I won't create more problems ...

Any ideas?

Pavlos