Hi,
We have a web application which had been running unproblematically for
around 6 years until several days ago (approximately 10th May). At this
time we suddenly found that requests sent via POST were intermittently
showing up as GET requests in the Apache access logs. On each such occasion
(around 10% of requests) the application would fail as a consequence with
none of the POSTed data reaching our scripts. On the remaining 90% of
occasions the POST request were getting transmitted successfully.
To see if this was just a local problem, we switched the application to
another server at a different ISP but still the same happened. We then
rewrote the application as an embedded Flash application rather than
traditional HTML forms, but the same continued to happen.
The problem is occurring for users at a variety of locations in different
organisations so is not specific to any particular organisational hardware
or software configuration. Absolutely nothing has changed at our end so we
suspect that a software update of some kind, either at the browser end or at
the server end, is the cause. In the HTML version of the application (a 23
page questionnaire), users are able to submit some pages but other pages
fail, suggesting an interaction between whatever is at the root of the
problem and the specific data posted (strings of digits with occasional
typed comments). We first suspected the recent autoupdate of IE on 8th of
May but so far we have heard of no similar problems from other users. So
the next possibility is a recent Apache update. I'm no expert on Apache so
I'm wondering if anyone can offer some ideas.
Specifically:
(a) has their been a recent update of Apache or related software over the
last 10 days which could possibly have caused this problem?
and
(b) does anyone have any idea of what sort of process could alter a POST
request from a browser in such a manner as it finishes up as a GET request
without any posted data by the time it reaches a CGI scripts? Incidentally,
on this point, we are pretty certain that the form is not broken in any way
and submits a valid POST request.
Any information would be greatly appreciated.
John G
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