*/
channel *channel_open(node *node, uint16_t port, channel_receive_cb_t cb, const void *data, size_t len) {
channel *ch = (channel *)meshlink_channel_open(handle, node, port, (meshlink_channel_receive_cb_t)cb, data, len);
*/
channel *channel_open(node *node, uint16_t port, channel_receive_cb_t cb, const void *data, size_t len) {
channel *ch = (channel *)meshlink_channel_open(handle, node, port, (meshlink_channel_receive_cb_t)cb, data, len);