Only update timestamp and targeting on higher sequence number

2011-08-14 02:31:33 -04:00
parent ec4a75dcaf
commit ee7e9a1e2b
3 changed files with 42 additions and 34 deletions
@@ -196,7 +196,7 @@ void Transport<MyState, RemoteState>::recv( void )
    
    if ( !found ) {
      //    fprintf( stderr, "Ignoring out-of-order packet. Reference state %d has been discarded or hasn't yet been received.\n", int(inst.old_num) );
-      return;
+      return; /* this is security-sensitive and part of how we enforce idempotency */
    }
    
    /* apply diff to reference state */