On Tue, 22 Feb 2005, Reuben Farrelly wrote:
Want to let them know that they are still sending too many keep-alive headers?
Fortunately for Squid this specific error is harmless to all versions of Squid and completely ignored, and also implicitly cleaned up when the message is forwarded by Squid due to the nature of the HTTP protocol.
More generally, how on earth does software manage to screw up something simple like an HTTP header so much?
Mostly because noone has cared very much about the integrity or quality of HTTP headers in the past I guess. This is likely to start changing real soon I hope.
Is it usually an application that just appends duplicate headers to what was an existing and legitimate header from a web server?
Applications are not supposed to set hop-by-hop headers such as keep-alive.. this is purely the business of the web server core.
Or are there known-to-be broken versions of applications out there?
Plenty, as have been seen in the last weeks here on squid-users..
If you want to see how bad the situation really is then set
relaxed_header_parser off
in your squid.conf and watch several major web sites fall down..
Regards Henrik
