patch_vlc-0.8.2

udp-lite for upd lite linux kernel

--- vlc-0.8.2/modules/misc/network/ipv4.c	2005-06-25 14:43:10.000000000 +0100
+++ vlc-0.8.2UDP-Lite/modules/misc/network/ipv4.c	2006-06-08 20:17:48.000000000 +0100
@@ -168,6 +168,8 @@
  *   Its use leads to great confusion and is currently discouraged.
  * This function returns -1 in case of error.
  *****************************************************************************/
+/* XXX UDP-Lite (RFC 3828) hack */
+#include <netinet/udplite.h>
 static int OpenUDP( vlc_object_t * p_this, network_socket_t * p_socket )
 {
     char * psz_bind_addr = p_socket->psz_bind_addr;
@@ -179,6 +181,7 @@
     socklen_t i_opt_size;
     struct sockaddr_in sock;
     vlc_value_t val;
+    int cscov = 8;               /* (minimal) checksum coverage length for UDP-Lite */
 
     /* If IP_ADD_SOURCE_MEMBERSHIP is not defined in the headers
        (because it's not in glibc for example), we have to define the
@@ -192,18 +195,22 @@
      };
 #endif
 
-    /* Open a SOCK_DGRAM (UDP) socket, in the AF_INET domain, automatic (0)
-     * protocol */
-    if( (i_handle = socket( AF_INET, SOCK_DGRAM, 0 )) == -1 )
+    /* Open a SOCK_DGRAM (*UDP-Lite*) socket, using the PF_INET domain */
+    if( (i_handle = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDPLITE )) == -1 )
     {
 #if defined(WIN32) || defined(UNDER_CE)
         msg_Warn( p_this, "cannot create socket (%i)", WSAGetLastError() );
 #else
-        msg_Warn( p_this, "cannot create socket (%s)", strerror(errno) );
+        msg_Warn( p_this, "Cannot create UDP-Lite socket (%s)", strerror(errno) );
 #endif
         return( -1 );
     }
 
+    /* set socket options at UDP-Lite socket level: receiver specifies minimal
+     * required checksum coverage length, sender sets the exact checksum coverage */
+    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;
     if( setsockopt( i_handle, SOL_SOCKET, SO_REUSEADDR,