* Add the possibility to set a separate connection timeout for backend

workers.

PR: 45445
Submitted by: rahul <rahul sun.com>
Reviewed by: rpluem


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@684341 13f79535-47bb-0310-9956-ffa450edef68

CHANGES

@@ -2,6 +2,10 @@
 Changes with Apache 2.3.0
 [ When backported to 2.2.x, remove entry from this file ]
 
+  *) mod_proxy: Add connectiontimeout parameter for proxy workers in order to
+     be able to set the timeout for connecting to the backend separately.
+     PR 45445. [Ruediger Pluem, rahul <rahul sun.com>]
+
   *) mod_dav_fs: Retrieve minimal system information about directory 
      entries when walking a DAV fs, resolving a performance degradation on 
      Windows.  PR 45464.  [Jeff Trawick]

docs/manual/mod/mod_proxy.xml

@@ -697,6 +697,12 @@ expressions</description>
     connections in the pool the Apache will return <code>SERVER_BUSY</code>
     status to the client.
     </td></tr>
+    <tr><td>connectiontimeout</td>
+        <td>timeout</td>
+        <td>Connect timeout in seconds.
+        The number of seconds Apache waits for the creation of a connection to
+        the backend to complete.
+    </td></tr>
     <tr><td>disablereuse</td>
         <td>Off</td>
         <td>This parameter should be used when you want to force mod_proxy

include/ap_mmn.h

@@ -163,6 +163,9 @@
  *                         Rationale: see r661069.
  * 20080528.1 (2.3.0-dev)  add has_realm_hash() to authn_provider struct
  * 20080722.0 (2.3.0-dev)  remove has_realm_hash() from authn_provider struct
+ * 20080722.1 (2.3.0-dev)  Add conn_timeout and conn_timeout_set to
+ *                         proxy_worker struct.
+ *
  */
 
 #define MODULE_MAGIC_COOKIE 0x41503234UL /* "AP24" */
@@ -170,7 +173,7 @@
 #ifndef MODULE_MAGIC_NUMBER_MAJOR
 #define MODULE_MAGIC_NUMBER_MAJOR 20080722
 #endif
-#define MODULE_MAGIC_NUMBER_MINOR 0                     /* 0...n */
+#define MODULE_MAGIC_NUMBER_MINOR 1                     /* 0...n */
 
 /**
  * Determine if the server's current MODULE_MAGIC_NUMBER is at least a

modules/proxy/mod_proxy.c

@@ -281,6 +281,16 @@ static const char *set_worker_param(apr_pool_t *p,
             return "lbset must be between 0 and 99";
         worker->lbset = ival;
     }
+    else if (!strcasecmp(key, "connectiontimeout")) {
+        /* Request timeout in seconds.
+         * Defaults to connection timeout
+         */
+        ival = atoi(val);
+        if (ival < 1)
+            return "Connectiontimeout must be at least one second.";
+        worker->conn_timeout = apr_time_from_sec(ival);
+        worker->conn_timeout_set = 1;
+    }
     else {
         return "unknown Worker parameter";
     }

modules/proxy/mod_proxy.h

@@ -352,6 +352,8 @@ struct proxy_worker {
     char            retry_set;
     char            disablereuse;
     char            disablereuse_set;
+    apr_interval_time_t conn_timeout;
+    char            conn_timeout_set;
 };
 
 /*

modules/proxy/proxy_util.c

@@ -2325,8 +2325,11 @@ PROXY_DECLARE(int) ap_proxy_connect_backend(const char *proxy_function,
                           "Failed to set");
         }
 
-        /* Set a timeout on the socket */
+        /* Set a timeout for connecting to the backend on the socket */
-        if (worker->timeout_set == 1) {
+        if (worker->conn_timeout_set) {
+            apr_socket_timeout_set(newsock, worker->conn_timeout);
+        }
+        else if (worker->timeout_set == 1) {
             apr_socket_timeout_set(newsock, worker->timeout);
         }
         else if (conf->timeout_set == 1) {
@@ -2364,6 +2367,17 @@ PROXY_DECLARE(int) ap_proxy_connect_backend(const char *proxy_function,
             continue;
         }
 
+        /* Set a timeout on the socket */
+        if (worker->timeout_set == 1) {
+            apr_socket_timeout_set(newsock, worker->timeout);
+        }
+        else if (conf->timeout_set == 1) {
+            apr_socket_timeout_set(newsock, conf->timeout);
+        }
+        else {
+             apr_socket_timeout_set(newsock, s->timeout);
+        }
+
         conn->sock   = newsock;
         connected    = 1;
     }