Set QoS flag for UDP forwarding

src/redir.c

@@ -147,6 +147,10 @@ int create_and_bind(const char *addr, const char *port)
             LOGI("tcp port reuse enabled");
         }
 
+        // Set QoS flag
+        int tos = 46;
+        setsockopt(remotefd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos))
+
         s = bind(listen_sock, rp->ai_addr, rp->ai_addrlen);
         if (s == 0) {
             /* We managed to bind successfully! */
@@ -643,6 +647,10 @@ static void accept_cb(EV_P_ ev_io *w, int revents)
     setsockopt(remotefd, SOL_TCP, TCP_KEEPINTVL, (void *)&keepInterval, sizeof(keepInterval));
     setsockopt(remotefd, SOL_TCP, TCP_KEEPCNT, (void *)&keepCount, sizeof(keepCount));
 
+    // Set QoS flag
+    int tos = 46;
+    setsockopt(remotefd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos))
+
     // Set non blocking
     setnonblocking(remotefd);