We've got HAProxy sitting in front of a menagerie of web servers, none of which handle `Expect: 100-continue` in any way, shape, or form. When someone hits us with a POST from cURL, there's a kind of irritating 1 second delay while cURL waits for the "HTTP/1.1 100 Continue" response. Rather than try to solve it in every application server, I was wondering if there's any way to force HAProxy to send a "100 Continue" response when it gets a POST with "Expect: 100-continue" (and then delete the Expect from the proxied request, of course).
It seems like there's already code for sending a 100 Continue if the `http-buffer-request` option is set, so I guess I'm just asking about the feasibility of making that behavior a stand-alone option without having to put the whole request in RAM. -- James Brown Engineer
