add conditional inclusion for header

mcm · Mar 3, 2021 · e884fc6 · e884fc6
1 parent 7e63ded
commit e884fc6
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/udp-listener.h b/udp-listener.h
@@ -1,5 +1,11 @@
+#ifndef UDPLISTENER_H
+#define UDPLISTENER_H
 
 /* UDP listener: upon incoming packet, find where it should go
  * This is run in its own process and never returns.
  */
 void udp_listener(struct listen_endpoint* endpoint, int num_endpoints, int active_endpoint);
+
+
+
+#endif /* UDPLISTENER_H */