Fix calls to setsockopt.

On FreeBSD, the socket option length must be declared as an int.

While I'm here, translate dscp (0x92) to the appropriate constants.

(tested on FreeBSD only so far)

src/network/network.cc

@@ -35,6 +35,7 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <netinet/ip.h>
 #include <arpa/inet.h>
 #include <assert.h>
 #include <errno.h>
@@ -157,14 +158,14 @@ Connection::Socket::Socket()
 #endif
 
   /* set diffserv values to AF42 + ECT */
-  uint8_t dscp = 0x92;
-  if ( setsockopt( _fd, IPPROTO_IP, IP_TOS, &dscp, 1) < 0 ) {
+  int dscp = IPTOS_DSCP_AF42 | IPTOS_ECN_ECT0;
+  if ( setsockopt( _fd, IPPROTO_IP, IP_TOS, &dscp, sizeof (dscp)) < 0 ) {
     //    perror( "setsockopt( IP_TOS )" );
   }
 
   /* request explicit congestion notification on received datagrams */
 #ifdef HAVE_IP_RECVTOS
-  char tosflag = true;
+  int tosflag = true;
   socklen_t tosoptlen = sizeof( tosflag );
   if ( setsockopt( _fd, IPPROTO_IP, IP_RECVTOS, &tosflag, tosoptlen ) < 0 ) {
     perror( "setsockopt( IP_RECVTOS )" );