58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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// https://mosquitto.org/api/files/mosquitto-h.html
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#include <mosquitto.h>
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#include "mqtt.h"
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int main(int argc, char *argv[]) {
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int err;
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struct mosquitto *mqtt;
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err = mosquitto_lib_init();
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if (err) {
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fprintf(stderr, "Error initalizing mosquitto lib (%d): %s\n", err, mosquitto_strerror(err));
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exit(EXIT_FAILURE);
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}
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mqtt = mosquitto_new(MQTT_USER, true, NULL);
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if (mqtt == NULL) {
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fprintf(stderr, "Error creating mosquitto instance (%d): %s\n", errno, strerror(errno));
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exit(EXIT_FAILURE);
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}
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err = mosquitto_username_pw_set(mqtt, MQTT_USER, MQTT_PASS);
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if (err) {
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fprintf(stderr, "Error setting username & password (%d): %s\n", err, mosquitto_strerror(err));
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exit(EXIT_FAILURE);
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}
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err = mosquitto_connect(mqtt, "openhab.sugarland.lan", 1883, 10);
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if (err) {
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fprintf(stderr, "Error on connection of type ");
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if (err == MOSQ_ERR_ERRNO) {
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fprintf(stderr, "system (%d): %s\n", errno, strerror(errno));
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} else {
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fprintf(stderr, "mosquitto (%d): %s\n", err, mosquitto_strerror(err));
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}
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exit(EXIT_FAILURE);
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}
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char *foo = "blah";
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err = mosquitto_publish(mqtt, NULL, "/xplane/foo", strlen(foo), foo, 0, false);
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if (err) {
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fprintf(stderr, "Error publishing message (%d): %s\n", err, mosquitto_strerror(err));
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exit(EXIT_FAILURE);
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}
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err = mosquitto_disconnect(mqtt);
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// ignore error
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mosquitto_destroy(mqtt);
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}
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