Fix endianess issues, also obey number of peers requested in udp announces

ot_udp.c

@@ -84,10 +84,12 @@ void handle_udp4( int64 serversocket ) {
 /*      if( !udp_test_connectionid( inpacket, remoteip ))
         fprintf( stderr, "UDP Connection id missmatch.\n" ); */
 
-      numwant = 200;
       /* We do only want to know, if it is zero */
       left  = inpacket[64/4] | inpacket[68/4];
 
+      numwant = ntohl( inpacket[92/4] );
+      if (numwant > 200) numwant = 200;
+
       event = ntohl( inpacket[80/4] );
       port  = *(uint16_t*)( static_inbuf + 96 );
       hash  = (ot_hash*)( static_inbuf + 16 );

trackerlogic.c

@@ -304,8 +304,8 @@ exit_loop:
 
   /* else { Handle UDP reply */
   ((uint32_t*)reply)[2] = htonl( OT_CLIENT_REQUEST_INTERVAL_RANDOM );
-  ((uint32_t*)reply)[3] = peer_list->peer_count - peer_list->seed_count;
-  ((uint32_t*)reply)[4] = peer_list->seed_count;
+  ((uint32_t*)reply)[3] = htonl( peer_list->peer_count - peer_list->seed_count );
+  ((uint32_t*)reply)[4] = htonl( peer_list->seed_count);
 
   mutex_bucket_unlock_by_hash( hash );
   return (size_t)20;