In fact I started with an new fresh configuration without all those options and now it works well (I still have http-server-close & forceclose). But I had to remove the "default_backend nginx" directive because it was the root issue. Sometimes HAProxy was going through the acls (below) without selecting the right backend (gateway_bringr). Thus, it was falling back to the default_backend (nginx) and that's why the 502 errors were coming (see http://pastebin.com/yHHkJpcX )
acl is_gateway_bringr hdr_dom(host) -i gateway.brin.gr acl is_gateway_bringr hdr_dom(host) -i gateway.bringr.dev I don't understand your answer ( I'm new to HAProxy ) because gateway_bringr is an http and websockets server so it should have "option http-server-close" and "option forceclose" isn't it ? And I'm running HA-Proxy v1.4.15. On Wed, May 2, 2012 at 11:48 PM, Baptiste <[email protected]> wrote: > on the backend gateway_bringr, please comment the http-server-close > option as well as forceclose. > It will turn this backend in tunnel mode. > > As far as I remember, haproxy fails back automatically to the tunnel mode > for websockets opened in a backend in "http-server-close" mode. > But I don't know from which version of haproxy it is available... > > Which version are you running? > What does the log says??? > > cheers > > > On Tue, May 1, 2012 at 1:26 AM, Francois-Guillaume Ribreau < > [email protected]> wrote: > >> Thanks for your answer >> >> However, I removed the "mode tcp" line from the frontend block and I >> still have the same issue. >> >> Do you have any other ideas ? >> >> Thanks >> >> >> On Mon, Apr 30, 2012 at 11:20 PM, Baptiste <[email protected]> wrote: >> >>> On Mon, Apr 30, 2012 at 3:17 PM, Francois-Guillaume Ribreau >>> <[email protected]> wrote: >>> > On the main page of my website multiple http requests are made on >>> different >>> > domains (brin.gr, static.brin.gr and gateway.brin.gr). >>> > Sometimes everything's fine, sometimes the http request to >>> gateway.brin.gr >>> > returns 502. >>> > >>> > I've started HAProxy in debug mode and found out that the 502 error >>> occur >>> > when the request is done on the wrong backend (the request is done on >>> > default backend "nginx" instead of "gateway"), >>> > see http://pastebin.com/yHHkJpcX. >>> > >>> > So it seems to be a configuration issue. FYI Gateway.brin.gr is >>> process that >>> > act as an http server and a websocket server and runs on the local port >>> > 8080. >>> > >>> > Here is the configuration file: http://pastebin.com/ddmDzZLG >>> > >>> > You can try accessing http://brin.gr by yourself and see that >>> sometimes the >>> > request gateway.brin.gr will throw a 502 error. >>> > >>> > What did I do wrong ? >>> > >>> > Thanks a lot for your time. >>> >>> Hi, >>> >>> It may be due because your frontend is in TCP mode and I'm almost sure >>> that HTTP acls will always return 0. >>> Maybe Willy will confirm, or not :) >>> >>> cheers >>> >> >> >> >> -- >> Francois-Guillaume Ribreau [image: LinkedIn] >> <http://www.linkedin.com/in/francoisguillaumeribreau> >> <http://www.doyoubuzz.com/francois-guillaume-ribreau> [image: >> Twitter] <http://twitter.com/FGRibreau> [image: Site] >> <http://fgribreau.com/> >> <http://www.viadeo.com/fr/profile/francois-guillaume.ribreau> [image: >> Blog] <http://blog.fgribreau.com/> >> >> > -- Francois-Guillaume Ribreau [image: LinkedIn] <http://www.linkedin.com/in/francoisguillaumeribreau> <http://www.doyoubuzz.com/francois-guillaume-ribreau> [image: Twitter] <http://twitter.com/FGRibreau> [image: Site] <http://fgribreau.com/> <http://www.viadeo.com/fr/profile/francois-guillaume.ribreau> [image: Blog] <http://blog.fgribreau.com/>
