Fixed "proxy_pass" with IP address and no port (ticket #276). Upstreams created by "proxy_pass" with IP address and no port were broken in 1.3.10, by not initializing port in u->sockaddr. API change: ngx_parse_url() was modified to always initialize port (in u->sockaddr and in u->port), even for the u->no_resolve case; ngx_http_upstream() and ngx_http_upstream_add() were adopted.

--- a/src/http/ngx_http_upstream.h
+++ b/src/http/ngx_http_upstream.h
@@ -116,6 +116,7 @@ struct ngx_http_upstream_srv_conf_s {
     ngx_uint_t                       line;
     in_port_t                        port;
     in_port_t                        default_port;
+    ngx_uint_t                       no_port;  /* unsigned no_port:1 */
 };