On 10/08/2008 10:55 PM, Matt Stevenson wrote: > Hi, > > I've used mod_jk (1/2) for years. I've always had an issue when a backend > server goes down, not tomcat/jboss stopped > but dead. Recently some people I work with have been using mod_proxy and > mod_proxy_ajp. This seems to have the same issue. > > The code (proxy_util.c) assumes that apr_socket_timeout_set works for all > connects. I don't believe it does, not unless > it is in non blocking mode. I wrote the code below > for"ap_proxy_connect_backend" before I looked deeper into the apr libs > (sorry its not in diff format, and for the hard 2 sec timeout). The code > seems to work fine for linux (and probably other > unix). I've basically redone the apr code in apr_wait_for_io_or_timeout > (should have dug deeper first). > > Anyway the current release code doesn't seem to work for me for down boxes > (to test point an ajp proxy at a non existant > IP on the network and a live server). I think if you put the socket in > non-blocking mode first and with a timeout apr will > try to handle a connect timeout (I haven't had a chance to try), switch back > to non blocking after connect.
Exactly. This might be the only thing missing in ap_proxy_connect_backend: Setting the socket to non blocking before calling apr_socket_connect and setting it to blocking again afterwards. Regards Rüdiger
