libmqtt/tests/connect_subscribe.c

75 lines
1.8 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "mqtt.h"
bool leave = false;
#define LOG(fmt, ...) fprintf(stdout, fmt "\n", ## __VA_ARGS__)
bool err_handler(MQTTHandle *handle, MQTTErrorCode error) {
LOG("Error received: %d", error);
return 1;
}
void callback(MQTTHandle *handle, char *topic, char *payload) {
LOG("Received publish: %s -> %s", topic, payload);
MQTTStatus result = mqtt_unsubscribe(handle, "testsuite/mqtt/test");
if (result != MQTT_STATUS_OK) {
LOG("Could not unsubscribe test");
exit(1);
}
result = mqtt_unsubscribe(handle, "testsuite/mqtt/test2");
if (result != MQTT_STATUS_OK) {
LOG("Could not unsubscribe test 2");
exit(1);
}
sleep(1);
leave = true;
}
void mqtt_connected(MQTTHandle *handle, void *context) {
LOG("Connected!");
LOG("Trying subscribe on testsuite/mqtt/test...");
MQTTStatus result = mqtt_subscribe(handle, "testsuite/mqtt/test", MQTT_QOS_0, callback);
if (result != MQTT_STATUS_OK) {
LOG("Could not subscribe test");
exit(1);
}
result = mqtt_subscribe(handle, "testsuite/mqtt/test2", MQTT_QOS_0, callback);
if (result != MQTT_STATUS_OK) {
LOG("Could not subscribe test 2");
exit(1);
}
}
int main(int argc, char **argv) {
MQTTConfig config = { 0 };
config.client_id = "libmqtt_testsuite";
config.hostname = "localhost";
config.clean_session = true;
LOG("Trying to connect to %s...", config.hostname);
MQTTHandle *mqtt = mqtt_connect(&config, mqtt_connected, NULL, err_handler);
if (mqtt == NULL) {
LOG("Connection failed!");
return 1;
}
while (!leave) {
LOG("Waiting...");
sleep(1);
}
LOG("Disconnecting...");
mqtt_disconnect(mqtt, NULL, NULL);
}