> OK, got it. > > What should I do with HAProxy to handle with them? (option > accept-invalid-http-request is set already)
You can't. HAproxy will not support those URI's. accept-invalid-http-request allows a limited set of forbidden chars, but not the ones you are using (> 127/0x7f ASCII). You will have to fix your application. Note that this is specified in RFC3986 and haproxy checks it for a reason: security. Also see [1]. Lukas [1] http://support.microsoft.com/kb/925261/en-us
