mosquitto_embedded_server_example.c

// Create a new server
mosq = mosquitto_server_new();

// Configure more stuff
mosquitto_server_set_opt(MOSQUITTO_SERVER_TLS, FALSE);

// Bind server to a socket
mosquitto_server_bind(mosq, 1883);

while (!mosquitto_server_loop(mosq)) {
    // Send message to all subscribers
    char msg* = "My message";
    mosquitto_server_publish_str(mosq, "test/foo", msg);
}

mosquitto_server_destroy(mosq);