+static void channel_accept(struct utcp_connection *utcp_connection, uint16_t port) {
+ node_t *n = utcp_connection->utcp->priv;
+ if(!n)
+ abort();
+ meshlink_handle_t *mesh = n->mesh;
+ if(!mesh->channel_accept_cb)
+ return;
+ meshlink_channel_t *channel = xzalloc(sizeof *channel);
+ channel->node = n;
+ channel->c = utcp_connection;
+ if(mesh->channel_accept_cb(mesh, channel, port, NULL, 0))
+ utcp_accept(utcp_connection, channel_recv, channel);
+ else
+ free(channel);
+}
+
+static ssize_t channel_send(struct utcp *utcp, const void *data, size_t len) {