Http 408 Apache Access
Hiawatha version: 9.5
Operating System: debian 7.1
I've been trying to track down an intermittent 408 error problem which my reverse proxy setup is throwing. All the traffic is being server in TLS/SSL from the proxy.
The first issue that this has thrown up is that it appears that these 408 errors thrown in reverse proxy mode do not appear to be logged anywhere. So I can't tell you how often it is happening relative to the overall load on the server (which is fairly busy - serving over a million hits a month). Having traced specific requests that have thrown the error at the browser, the requests did not appear to be logged at all - nothing in the reverse proxy logs, and nothing at the backend server logs.
I've managed to confirm that the error is being generated at the reverse proxy, not at the backend (Changing the background colour of the standard error.xslt is useful!). Most often it occurs on secondary static image files, but I've seen it occasionally on the primary html/php file, js file etc. so it doesn't look like a CGI or cache issue.
Watching requests go through with Chrome developer tools open, what is most strange is that the error is returned within a few tens or at most a couple of hundred msecs of the request being sent by the browser which look rather odd given that it is a timeout error. I've tinkered with the TimeForRequest settings, MaxKeepAlive, and the new reverse proxy keepalive option. No change.
Any suggestions of where to look, or things to try? Any other info you need to help you with this?
Http 408 Apache 2.4
According to this wikipedia link, 408 means Request Timeout 408 Request Timeout The server timed out waiting for the request.2 According to W3 HTTP specifications: 'The client did not produce a request within the time that the server was prepared to wait. The client MAY repeat the request without modifications at any later time.' When Apache gets too many 408 errors at the beginning of its log file, awstats complains about the log file not being in the correct format and will not proceed until the leading 408 errors are removed. Watch sky through amazon fire stick.