static void ev_handler(struct mg_connection *nc, int ev, void *p) {
struct mg_mqtt_message *msg = (struct mg_mqtt_message *) p;
(void) nc;
#if 0
if (ev != MG_EV_POLL)
printf("USER HANDLER GOT %d\n", ev);
#endif
switch (ev) {
case MG_EV_CONNECT: {
struct mg_send_mqtt_handshake_opts opts;
memset(&opts, 0, sizeof(opts));
opts.user_name = s_user_name;
opts.password = s_password;
mg_set_protocol_mqtt(nc);
mg_send_mqtt_handshake_opt(nc, "dummy", opts);
break;
}
case MG_EV_MQTT_CONNACK:
if (msg->connack_ret_code != MG_EV_MQTT_CONNACK_ACCEPTED) {
printf("Got mqtt connection error: %d\n", msg->connack_ret_code);
exit(1);
}
s_topic_expr.topic = s_topic;
printf("Subscribing to '%s'\n", s_topic);
mg_mqtt_subscribe(nc, &s_topic_expr, 1, 42);
break;
case MG_EV_MQTT_PUBACK:
printf("Message publishing acknowledged (msg_id: %d)\n", msg->message_id);
break;
case MG_EV_MQTT_SUBACK:
printf("Subscription acknowledged, forwarding to '/test'\n");
break;
case MG_EV_MQTT_PUBLISH: {
#if 0
char hex[1024] = {0};
mg_hexdump(nc->recv_mbuf.buf, msg->payload.len, hex, sizeof(hex));
printf("Got incoming message %.*s:\n%s", (int)msg->topic.len, msg->topic.p, hex);
#else
printf("Got incoming message %.*s: %.*s\n", (int) msg->topic.len,
msg->topic.p, (int) msg->payload.len, msg->payload.p);
#endif
printf("Forwarding to /test\n");
mg_mqtt_publish(nc, "/test", 65, MG_MQTT_QOS(0), msg->payload.p,
msg->payload.len);
break;
}
case MG_EV_CLOSE:
printf("Connection closed\n");
exit(1);
}
}
static void ev_handler(struct mg_connection *nc, int ev, void *p) {
struct mg_mqtt_message *msg = (struct mg_mqtt_message *)p;
(void) nc;
#if 0
if (ev != NS_POLL)
printf("USER HANDLER GOT %d\n", ev);
#endif
switch (ev) {
case NS_CONNECT:
mg_set_protocol_mqtt(nc);
mg_send_mqtt_handshake(nc, "dummy");
break;
case NS_MQTT_CONNACK:
if (msg->connack_ret_code != NS_MQTT_CONNACK_ACCEPTED) {
printf("Got mqtt connection error: %d\n", msg->connack_ret_code);
exit(1);
}
printf("Subscribing to '/stuff'\n");
mg_mqtt_subscribe(nc, topic_expressions, sizeof(topic_expressions)/sizeof(*topic_expressions), 42);
break;
case NS_MQTT_PUBACK:
printf("Message publishing acknowledged (msg_id: %d)\n", msg->message_id);
break;
case NS_MQTT_SUBACK:
printf("Subscription acknowledged, forwarding to '/test'\n");
break;
case NS_MQTT_PUBLISH:
{
#if 0
char hex[1024] = {0};
mg_hexdump(nc->recv_mbuf.buf, msg->payload.len, hex, sizeof(hex));
printf("Got incoming message %s:\n%s", msg->topic, hex);
#else
printf("Got incoming message %s: %.*s\n", msg->topic, (int)msg->payload.len, msg->payload.p);
#endif
printf("Forwarding to /test\n");
mg_mqtt_publish(nc, "/test", 65, NS_MQTT_QOS(0), msg->payload.p, msg->payload.len);
}
break;
case NS_CLOSE:
printf("Connection closed\n");
exit(1);
}
}