[libsoup] soup-session.c: always send the "Keep-Alive" header

[Sergio Villar Senin <svillar src gnome org>]

commit 8e99df80d27115a6afce4203ddcc9ce31c4a7ce6
Author: Sergio Villar Senin <svillar igalia com>
Date:   Tue Apr 26 18:47:11 2011 +0200

    soup-session.c: always send the "Keep-Alive" header
    
    This will save us many new connection attempts when connecting to HTTP1.0
    servers that automatically try to close the connection unless specified by
    the client.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=648680

 libsoup/soup-session.c |   45 +++++++--------------------------------------
 1 files changed, 7 insertions(+), 38 deletions(-)
---
diff --git a/libsoup/soup-session.c b/libsoup/soup-session.c
index ba98e65..0a7f7a3 100644
--- a/libsoup/soup-session.c
+++ b/libsoup/soup-session.c
@@ -66,8 +66,6 @@ typedef struct {
 	guint        num_conns;
 
 	guint        num_messages;
-
-	SoupHTTPVersion http_version;
 } SoupSessionHost;
 
 typedef struct {
@@ -1037,7 +1035,6 @@ soup_session_host_new (SoupSession *session, SoupURI *uri)
 	host = g_slice_new0 (SoupSessionHost);
 	host->uri = soup_uri_copy_host (uri);
 	host->addr = soup_address_new (host->uri->host, host->uri->port);
-	host->http_version = SOUP_HTTP_1_1;
 
 	return host;
 }
@@ -1190,8 +1187,7 @@ soup_session_send_queue_item (SoupSession *session,
 			      SoupMessageCompletionFn completion_cb)
 {
 	SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
-	SoupHTTPVersion http_version;
-	SoupSessionHost *host;
+	const char *conn_header;
 
 	if (priv->user_agent) {
 		soup_message_headers_replace (item->msg->request_headers,
@@ -1206,27 +1202,17 @@ soup_session_send_queue_item (SoupSession *session,
 					     priv->accept_language);
 	}
 
-	g_mutex_lock (priv->host_lock);
-	host = get_host_for_message (session, item->msg);
-	http_version = host->http_version;
-	g_mutex_unlock (priv->host_lock);
-
 	/* Force keep alive connections for HTTP 1.0. Performance will
 	 * improve when issuing multiple requests to the same host in
 	 * a short period of time, as we wouldn't need to establish
 	 * new connections. Keep alive is implicit for HTTP 1.1.
 	 */
-	if (http_version == SOUP_HTTP_1_0) {
-		const gchar* conn_header;
-
-		conn_header = soup_message_headers_get_list (item->msg->request_headers, "Connection");
-		if (!conn_header ||
-		    (!soup_header_contains (conn_header, "Keep-Alive") &&
-		     !soup_header_contains (conn_header, "close")))
-
-			soup_message_headers_append (item->msg->request_headers,
-						     "Connection", "Keep-Alive");
-	}
+	conn_header = soup_message_headers_get_list (item->msg->request_headers, "Connection");
+	if (!conn_header ||
+	    (!soup_header_contains (conn_header, "Keep-Alive") &&
+	     !soup_header_contains (conn_header, "close")))
+		soup_message_headers_append (item->msg->request_headers,
+					     "Connection", "Keep-Alive");
 
 	g_signal_emit (session, signals[REQUEST_STARTED], 0,
 		       item->msg, soup_connection_get_socket (item->conn));
@@ -1507,20 +1493,6 @@ soup_session_set_item_status (SoupSession          *session,
 }
 
 static void
-got_headers_cb (SoupMessage *msg, gpointer data)
-{
-	SoupMessageQueueItem *item = data;
-	SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (item->session);
-	SoupSessionHost *host;
-
-	/* Update the HTTP version to use for messages to this host */
-	g_mutex_lock (priv->host_lock);
-	host = get_host_for_message (item->session, SOUP_MESSAGE (msg));
-	host->http_version = soup_message_get_http_version (msg);
-	g_mutex_unlock (priv->host_lock);
-}
-
-static void
 queue_message (SoupSession *session, SoupMessage *msg,
 	       SoupSessionCallback callback, gpointer user_data)
 {
@@ -1541,9 +1513,6 @@ queue_message (SoupSession *session, SoupMessage *msg,
 			G_CALLBACK (redirect_handler), item);
 	}
 
-	/* Used to keep track of the HTTP version used by the host */
-	g_signal_connect (msg, "got-headers", G_CALLBACK (got_headers_cb), item);
-
 	g_signal_emit (session, signals[REQUEST_QUEUED], 0, msg);
 }