mod_proxy: Release the backend connection as soon as EOS is detected,

so the backend isn't forced to wait for the client to eventually
acknowledge the data.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1026665 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 18 insertions, 0 deletions

diff --git a/modules/proxy/mod_proxy_http.c b/modules/proxy/mod_proxy_http.c
index e636b73074..9454758d71 100644
--- a/modules/proxy/mod_proxy_http.c
+++ b/modules/proxy/mod_proxy_http.c
@@ -1905,8 +1905,18 @@ apr_status_t ap_proxy_http_process_response(apr_pool_t * p, request_rec *r,
 
                     /* found the last brigade? */
                     if (APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(bb))) {
+
                         /* signal that we must leave */
                         finish = TRUE;
+
+                        /* make sure we release the backend connection as soon
+                         * as we know we are done, so that the backend isn't
+                         * left waiting for a slow client to eventually
+                         * acknowledge the data.
+                         */
+                        ap_proxy_release_connection(backend->worker->scheme,
+                                backend, r->server);
+
                     }
 
                     /* try send what we read */
@@ -1930,6 +1940,14 @@ apr_status_t ap_proxy_http_process_response(apr_pool_t * p, request_rec *r,
             ap_log_error(APLOG_MARK, APLOG_TRACE2, 0, r->server,
                          "proxy: header only");
 
+            /* make sure we release the backend connection as soon
+             * as we know we are done, so that the backend isn't
+             * left waiting for a slow client to eventually
+             * acknowledge the data.
+             */
+            ap_proxy_release_connection(backend->worker->scheme,
+                    backend, r->server);
+
             /* Pass EOS bucket down the filter chain. */
             e = apr_bucket_eos_create(c->bucket_alloc);
             APR_BRIGADE_INSERT_TAIL(bb, e);