On Fri, Aug 6, 2010 at 2:50 AM, Timothy Partee <timothy.partee@xxxxxxxxx> wrote: > Basically what's happening is I have a small horde of Perl (not > mod_perl, just plain Perl) scripts which use the CGI.pm module to > parse out incoming CGI parameters and cookies, and about 2% of the > time when I get the POST data params from CGI they are a completely > empty collection. I can consistently reproduce this with a simple POST > form page to a simple Perl CGI script which dumps a set of static form > data (as in the form fields are hidden and therefore no data entry is > needed so I can just hit the submit button over and over again for > rapid testing) to the browser. Everything runs fine, no errors on the > server being reported, no error in the Perl script reported, just a > blank params collection about 2% of the time, seemingly completely at > random. Under high load and under low load there seems to be no > difference. First, confirm exactly what the browser is sending when you encounter the problem symptom: a) Content-Length non-zero + POST data b) Content-Length zero c) Content-Length non-zero but no post data (we'd expect the web server to wait for Timeout seconds before giving up on the POST data) You can easily log the incoming Content-Length in the access log. You can log the incoming headers/POST data with mod_dumpio. You can step outside of the web server process itself and use a packet trace tool such as Wireshark. You can use something like the ieHttpHeaders plug-in for IE, or equivalent for Firefox, to see the perspective of the browser process. --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
|