Close connections if the local address is no longer valid.

[meshlink] / src / net.c

diff --git a/src/net.c b/src/net.c
index a42d933bef822a375fea4c5b4e823d4f6553f683..ddfd2cf09aa828abc5a861742e60172e33b8fddb 100644 (file)
--- a/src/net.c
+++ b/src/net.c
@@ -625,13 +625,61 @@ void retry(meshlink_handle_t *mesh) {
                });
        }
 
-       /* Check for outgoing connections that are in progress, and reset their ping timers */
+#ifdef HAVE_IFADDRS_H
+       struct ifaddrs *ifa = NULL;
+       getifaddrs(&ifa);
+#endif
+
+       /* For active connections, check if their addresses are still valid.
+        * If yes, reset their ping timers, otherwise terminate them. */
        for list_each(connection_t, c, mesh->connections) {
-               if(c->outgoing && !c->node) {
+               if(!c->status.active) {
+                       continue;
+               }
+
+               if(!c->status.pinged) {
                        c->last_ping_time = 0;
                }
+
+#ifdef HAVE_IFADDRS_H
+
+               if(!ifa) {
+                       continue;
+               }
+
+               sockaddr_t sa;
+               socklen_t salen = sizeof(sa);
+
+               if(getsockname(c->socket, &sa.sa, &salen)) {
+                       continue;
+               }
+
+               bool found = false;
+
+               for(struct ifaddrs *ifap = ifa; ifap; ifap = ifap->ifa_next) {
+                       if(ifap->ifa_addr && !sockaddrcmp_noport(&sa, (sockaddr_t *)ifap->ifa_addr)) {
+                               found = true;
+                               break;
+                       }
+
+               }
+
+               if(!found) {
+                       logger(mesh, MESHLINK_DEBUG, "Local address for connection to %s no longer valid, terminating", c->name);
+                       terminate_connection(mesh, c, c->status.active);
+               }
+
+#endif
+       }
+
+#ifdef HAVE_IFADDRS_H
+
+       if(ifa) {
+               freeifaddrs(ifa);
        }
 
+#endif
+
        /* Kick the ping timeout handler */
        timeout_set(&mesh->loop, &mesh->pingtimer, &(struct timeval) {
                0, 0