Restart UDP SPTPS when a node reconnects with a new session ID.

[meshlink] / src / graph.c

diff --git a/src/graph.c b/src/graph.c
index 9955ea41644721a208041de60860329158998e04..d40087d8dc1c65f680c9f55b403f52c3acfc110f 100644 (file)
--- a/src/graph.c
+++ b/src/graph.c
@@ -144,6 +144,23 @@ static void check_reachability(meshlink_handle_t *mesh) {
                        if(n->utcp) {
                                utcp_abort_all_connections(n->utcp);
                        }
+
+                       if(n->status.visited == n->status.reachable) {
+                               /* This session replaces the previous one without changing reachability status.
+                                * We still need to reset the UDP SPTPS state.
+                                */
+                               n->status.validkey = false;
+                               sptps_stop(&n->sptps);
+                               n->status.waitingforkey = false;
+                               n->last_req_key = 0;
+
+                               n->status.udp_confirmed = false;
+                               n->maxmtu = MTU;
+                               n->minmtu = 0;
+                               n->mtuprobes = 0;
+
+                               timeout_del(&mesh->loop, &n->mtutimeout);
+                       }
                }
 
                if(n->status.visited != n->status.reachable) {