|httpd error log entries||topic started 9/24/2002; 8:11:46 AM
last post 9/25/2002; 2:41:04 AM
|Zbigniew Fiedorowicz - Re: httpd error log entries
9/25/2002; 2:41:04 AM (reads: 1204, responses: 0)
(Sorry about the previous message, which contained some HTML that the discussion board editor ate.)
I believe that most errors of the first type are caused by the client browser deciding (sometimes capriciously) to forget
INPUT TYPE="HIDDEN" NAME="course" VALUE="math153au02sk"
because it thinks this information is stale. Another possible cause is deep bookmarking by the student trying to avoid the login page.
I believe most SIGPIPEs are due to students impatiently clicking on the SUBMIT button twice. I don't worry about this, unless there is a dramatic upsurge in SIGPIPEs, which might indicate that the web server is getting overloaded, network congestion or similar things.
The last one might be due to some carelessness in coding of some WeBWorK script or problem. It might also be due to forgetfulness by the client browser, like the first problem.