> -----Original Message----- > From: Rainer Jung > Sent: Donnerstag, 5. August 2010 11:51 > To: dev@httpd.apache.org > Subject: Changing Connection header use in forward proxy > > It seems the forward proxy by default sets "Connection: Keep-Alive" > although it later closes the connection when it detects > is_address_reusable == 1 in the worker. > > Doesn't it make sense to issue "Connection close" instead? > > Since this happens in the code where we have a connection and > a request, > but no worker struct available, is it safe to apply this whenever > proxyreq is PROXYREQ_PROXY? Or can one somehow configure a > non-default > forward worker with an explicit URL to e.g. a frequently used origin > server which would then be expected to reuse connections? I > don't expect > that to be posible, but I'm not sure.
I haven't tried so far, but IMHO it should be possible to setup pooled connections for frequently used targets of a forward proxy by adding <Proxy http://www.frequentlyused.com/> # Set an arbitrary parameter to trigger the creation of a worker ProxySet keepalive=on </Proxy> If I am correct with this assumption the we should not proceed the way you proposed. How about the following untested patch instead? Index: modules/proxy/proxy_util.c =================================================================== --- modules/proxy/proxy_util.c (revision 982130) +++ modules/proxy/proxy_util.c (working copy) @@ -1568,6 +1568,7 @@ *balancer = NULL; *worker = conf->forward; access_status = OK; + apr_table_set(r->subprocess_env, "proxy-nokeepalive", "1"); } } else if (r->proxyreq == PROXYREQ_REVERSE) { @@ -1578,6 +1579,7 @@ *balancer = NULL; *worker = conf->reverse; access_status = OK; + apr_table_set(r->subprocess_env, "proxy-nokeepalive", "1"); } } } Regards Rüdiger
