Updated html man page (using man2html target).

[privoxy.git] / gateway.c

diff --git a/gateway.c b/gateway.c
index adcb11c..bdca2b5 100644 (file)
--- a/gateway.c
+++ b/gateway.c
@@ -1,13 +1,13 @@
-const char gateway_rcs[] = "$Id: gateway.c,v 1.44 2008/11/22 11:54:04 fabiankeil Exp $";
+const char gateway_rcs[] = "$Id: gateway.c,v 1.47 2008/12/24 17:06:19 fabiankeil Exp $";
 /*********************************************************************
  *
  * File        :  $Source: /cvsroot/ijbswa/current/gateway.c,v $
  *
  * Purpose     :  Contains functions to connect to a server, possibly
  *                using a "forwarder" (i.e. HTTP proxy and/or a SOCKS4
- *                proxy).
+ *                or SOCKS5 proxy).
  *
- * Copyright   :  Written by and Copyright (C) 2001-2008 the SourceForge
+ * Copyright   :  Written by and Copyright (C) 2001-2009 the SourceForge
  *                Privoxy team. http://www.privoxy.org/
  *
  *                Based on the Internet Junkbuster originally written
@@ -34,6 +34,17 @@ const char gateway_rcs[] = "$Id: gateway.c,v 1.44 2008/11/22 11:54:04 fabiankeil
  *
  * Revisions   :
  *    $Log: gateway.c,v $
+ *    Revision 1.47  2008/12/24 17:06:19  fabiankeil
+ *    Keep a thread around to timeout alive connections
+ *    even if no new requests are coming in.
+ *
+ *    Revision 1.46  2008/12/13 11:07:23  fabiankeil
+ *    Remove duplicated debugging checks
+ *    in connection_destination_matches().
+ *
+ *    Revision 1.45  2008/12/04 18:17:07  fabiankeil
+ *    Fix some cparser warnings.
+ *
  *    Revision 1.44  2008/11/22 11:54:04  fabiankeil
  *    Move log message around to include the socket number.
  *
@@ -362,13 +373,12 @@ extern void initialize_reusable_connections(void)
 {
    unsigned int slot = 0;
 
+#if !defined(HAVE_POLL) && !defined(_WIN32)
    log_error(LOG_LEVEL_INFO,
-      "Support for 'Connection: keep-alive' is experimental."
-#ifndef HAVE_POLL
-      " Detecting already dead connections might not work"
-      " correctly on your platform."
-#endif /* ndef HAVE_POLL */
-   );
+      "Detecting already dead connections might not work "
+      "correctly on your platform. In case of problems, "
+      "unset the keep-alive-timeout option.");
+#endif
 
    for (slot = 0; slot < SZ(reusable_connection); slot++)
    {
@@ -561,7 +571,7 @@ void forget_connection(jb_socket sfd)
  * Function    :  connection_destination_matches
  *
  * Description :  Determines whether a remembered connection can
- *                be reused. That is whether the destination and
+ *                be reused. That is, whether the destination and
  *                the forwarding settings match.
  *
  * Parameters  :
@@ -576,39 +586,6 @@ static int connection_destination_matches(const struct reusable_connection *conn
                                           const struct http_request *http,
                                           const struct forward_spec *fwd)
 {
-   /* XXX: Start of duplicated checks for debugging purposes. */
-   if (strcmpic(connection->host, http->host))
-   {
-      return FALSE;
-   }
-
-   if (connection->forwarder_type != fwd->type)
-   {
-      log_error(LOG_LEVEL_CONNECT, "Type mismatch: %d %d (%s)",
-         connection->forwarder_type, fwd->type, http->host);
-      return FALSE;
-   }
-   if (connection->gateway_port   != fwd->gateway_port)
-   {
-      log_error(LOG_LEVEL_CONNECT, "Gateway port mismatch: %d %d (%s)",
-         connection->gateway_port, fwd->gateway_port, http->host);
-      return FALSE;
-   }
-   if (connection->forward_port   != fwd->forward_port)
-   {
-      log_error(LOG_LEVEL_CONNECT, "Forward port mismatch: %d %d (%s)",
-         connection->forward_port, fwd->forward_port, http->host);
-      return FALSE;
-   }
-   if (connection->port != http->port)
-   {
-      log_error(LOG_LEVEL_CONNECT, "Server port mismatch: %d %d (%s)",
-         connection->port, http->port, http->host);
-      return FALSE;
-   }
-
-   /* XXX: End of duplicated checks for debugging purposes. */
-
    if ((connection->forwarder_type != fwd->type)
     || (connection->gateway_port   != fwd->gateway_port)
     || (connection->forward_port   != fwd->forward_port)
@@ -649,12 +626,15 @@ static int connection_destination_matches(const struct reusable_connection *conn
  *
  * Parameters  :  none
  *
- * Returns     :  void
+ * Returns     :  Number of connections that are still alive.
  *
  *********************************************************************/
-static void close_unusable_connections(void)
+int close_unusable_connections(void)
 {
    unsigned int slot = 0;
+   int connections_alive = 0;
+
+   privoxy_mutex_lock(&connection_reuse_mutex);
 
    for (slot = 0; slot < SZ(reusable_connection); slot++)
    {
@@ -673,10 +653,8 @@ static void close_unusable_connections(void)
                reusable_connection[slot].sfd, keep_alive_timeout);
             close_socket(reusable_connection[slot].sfd);
             mark_connection_closed(&reusable_connection[slot]);
-            continue;
          }
-
-         if (!socket_is_still_usable(reusable_connection[slot].sfd))
+         else if (!socket_is_still_usable(reusable_connection[slot].sfd))
          {
             log_error(LOG_LEVEL_CONNECT,
                "The connection to %s:%d in slot %d is no longer usable. "
@@ -685,10 +663,18 @@ static void close_unusable_connections(void)
                reusable_connection[slot].sfd);
             close_socket(reusable_connection[slot].sfd);
             mark_connection_closed(&reusable_connection[slot]);
-            continue;
+         }
+         else
+         {
+            connections_alive++;
          }
       }
    }
+
+   privoxy_mutex_unlock(&connection_reuse_mutex);
+
+   return connections_alive;
+
 }
 
 
@@ -773,10 +759,10 @@ static jb_socket get_reusable_connection(const struct http_request *http,
    jb_socket sfd = JB_INVALID_SOCKET;
    unsigned int slot = 0;
 
-   privoxy_mutex_lock(&connection_reuse_mutex);
-
    close_unusable_connections();
 
+   privoxy_mutex_lock(&connection_reuse_mutex);
+
    for (slot = 0; slot < SZ(reusable_connection); slot++)
    {
       if (!reusable_connection[slot].in_use