+ if(!c->outbuf.len)
+ io_set(&mesh->loop, &c->io, IO_READ);
+}
+
+static void handle_meta_io(event_loop_t *loop, void *data, int flags) {
+ meshlink_handle_t *mesh = loop->data;
+ connection_t *c = data;
+
+ if(c->status.connecting) {
+ c->status.connecting = false;
+
+ int result;
+ socklen_t len = sizeof(result);
+ getsockopt(c->socket, SOL_SOCKET, SO_ERROR, (void *)&result, &len);
+
+ if(!result)
+ finish_connecting(mesh, c);
+ else {
+ logger(mesh, MESHLINK_DEBUG, "Error while connecting to %s (%s): %s", c->name, c->hostname, sockstrerror(result));
+ terminate_connection(mesh, c, false);
+ return;
+ }
+ }
+
+ if(flags & IO_WRITE)
+ handle_meta_write(mesh, c);
+ else
+ handle_meta_connection_data(mesh, c);
+}
+
+// Find edges pointing to this node, and use them to build a list of unique, known addresses.
+static struct addrinfo *get_known_addresses(node_t *n) {
+ struct addrinfo *ai = NULL;
+
+ for splay_each(edge_t, e, n->edge_tree) {
+ if(!e->reverse)
+ continue;
+
+ bool found = false;
+ for(struct addrinfo *aip = ai; aip; aip = aip->ai_next) {
+ if(!sockaddrcmp(&e->reverse->address, (sockaddr_t *)aip->ai_addr)) {
+ found = true;
+ break;
+ }
+ }
+ if(found)
+ continue;
+
+ // Create a new struct addrinfo, and put it at the head of the list.
+ struct addrinfo *nai = xzalloc(sizeof(*nai) + SALEN(e->reverse->address.sa));
+ nai->ai_next = ai;
+ ai = nai;
+
+ ai->ai_family = e->reverse->address.sa.sa_family;
+ ai->ai_socktype = SOCK_STREAM;
+ ai->ai_protocol = IPPROTO_TCP;
+ ai->ai_addrlen = SALEN(e->reverse->address.sa);
+ ai->ai_addr = (struct sockaddr *)(nai + 1);
+ memcpy(ai->ai_addr, &e->reverse->address, ai->ai_addrlen);
+ }
+
+ return ai;