patch_vlc-0.8.4

来自「udp-lite for upd lite linux kernel」· 4 代码 · 共 32 行

--- vlc-0.8.4a/modules/misc/network/ipv4.c	2005-12-11 21:36:22.000000000 +0000
+++ vlc-0.8.4aUDP-Lite/modules/misc/network/ipv4.c	2006-06-08 20:14:43.000000000 +0100
@@ -182,6 +182,8 @@
     int i_handle, i_opt;
     struct sockaddr_in sock;
     vlc_value_t val;
+    int cscov = 8;                 /* checksum coverage length, for UDP-Lite */
+	
 #if defined(WIN32) || defined(UNDER_CE)
     char strerror_buf[WINSOCK_STRERROR_SIZE];
 # define strerror( x ) winsock_strerror( strerror_buf )
@@ -201,13 +203,14 @@
 
     p_socket->i_handle = -1;
 
-    /* Open a SOCK_DGRAM (UDP) socket, in the AF_INET domain, automatic (0)
-     * protocol */
-    if( (i_handle = socket( AF_INET, SOCK_DGRAM, 0 )) == -1 )
-    {
-        msg_Warn( p_this, "cannot create socket (%s)", strerror(errno) );
+    /* Open a SOCK_DGRAM (*UDP-Lite*) socket, using the PF_INET domain */
+    if( (i_handle = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDPLITE)) == -1 ) {
+        msg_Warn( p_this, "Cannot create UDP-Lite socket (%s)", strerror(errno) );
         return 0;
     }
+    /* set the checksum coverage length for both receiver and sender */
+    setsockopt(i_handle, SOL_UDPLITE, UDPLITE_RECV_CSCOV, &cscov, sizeof(int));
+    setsockopt(i_handle, SOL_UDPLITE, UDPLITE_SEND_CSCOV, &cscov, sizeof(int));
 
     /* We may want to reuse an already used socket */
     i_opt = 1;