#3 POST request processing hangs for a couple of minutes

[Igor G.]

Hi,

I use squid version 3.1.10 and c-icap version 0.1.6

I have a custom ICAP service I wrote. It passes HTTP traffic on to another process where it is either modified or left as is, then sends the result back to the squid.
There are 2 issues i'm currently having:

1. In the c-icap output I see weird error messages. They appear a number of minutes after HTTP activity. The error is as follows:

Error -1 while parsing headers :(0)
Process request timeout or interrupted....
Waiting for a request....

It looks like the issue in the next bullet is also somehow connected to these errors:

1. When there is a single POST request containing form data (~1.2K) the ICAP service behaves as expected, but after sending the result back to the squid the processing thread hangs for 4 minutes. When it resumes a response comes from the web server as if nothing bad has happened.
   Below is the service output at debug level 7:

[GS]: initializing request data
[GS]: preview request, body=yes, pdl=1024 (ALLOW204)
[GS]: url=[POST http://server.com/index.php HTTP/1.1]
[GS]: written 1024 bytes from preview
[GS]: IOR -> 350 bytes read from client (EOF)
[GS]: end of data (ALLOW204), going to send/receive
[GS]: send time: 0 ms
[GS]: receive time: 0 ms
[GS]: send/receive total time: 1 ms
[GS]: 1364 bytes received from message processor (message modified)
[GS]: IOW -> 1364 bytes written back to client
[GS]: IOW -> -2 bytes written back to client
[GS]: releasing request data
Log request to access log file /var/log/guard/icap_access.log
Width: 0, Parameter:
Width: 0, Parameter:
Width: 0, Parameter:
Width: 0, Parameter:
Width: 0, Parameter:
Width: 0, Parameter:

EOF was sent back to the squid, "releasing request data" message printed out from "release_request_data" handler, meaning the the request processing completeby the ICAP server. So what is wrong?
Please let me know if you need any additional information.