Hi Shawn, I am pretty sure that HAProxy cannot retry requests themselves because it does not know what side effects the request had. It can retry connections but once the session is assigned it returns results or fails.
See Willy's response for some more detail: http://marc.info/?l=haproxy&m=141225667313851&w=2 (you can also search the mailing list archives and this has come up a lot). Good luck finding the bug! -Joey On Wed, Oct 7, 2015 at 1:44 PM, Shawn Heisey <[email protected]> wrote: > Before I get started with this, I know and acknowledge that the problem > I'm trying to solve is not in haproxy. I suspect that haproxy cannot do > what I'm going to ask, but I was asked if it could do it, so I am > passing the question along to make sure. > > We are having a problem with our Liferay webapp (running in tomcat, > fronted by apache) where it sometimes returns a completely blank page. > If the user refreshes, it works. Near as I can tell, when this problem > happens, the response that haproxy gets from Apache only contains > headers, the body is empty. > > Can haproxy be configured to retry the request if it gets an empty > response body from the server? > > Thanks, > Shawn >
