generated from guanyuankai/bonus-edge-proxy
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "MQTTClient.h"
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#define ADDRESS "tcp://localhost:1883"
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#define CLIENTID "ExampleClientSub"
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#define TOPIC "MQTT Examples"
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#define PAYLOAD "Hello World!"
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#define QOS 1
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#define TIMEOUT 10000L
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volatile MQTTClient_deliveryToken deliveredtoken;
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void delivered(void *context, MQTTClient_deliveryToken dt)
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{
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printf("Message with token value %d delivery confirmed\n", dt);
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deliveredtoken = dt;
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}
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int msgarrvd(void *context, char *topicName, int topicLen, MQTTClient_message *message)
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{
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int i;
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char *payloadptr;
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printf("Message arrived\n");
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printf(" topic: %s\n", topicName);
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printf(" message: ");
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payloadptr = message->payload;
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for (i = 0; i < message->payloadlen; i++)
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{
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putchar(*payloadptr++);
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}
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putchar('\n');
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MQTTClient_freeMessage(&message);
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MQTTClient_free(topicName);
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return 1;
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}
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void connlost(void *context, char *cause)
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{
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printf("\nConnection lost\n");
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printf(" cause: %s\n", cause);
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}
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int main(int argc, char *argv[])
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{
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printf("\nCreating MQTTClient\n");
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MQTTClient client;
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MQTTClient_connectOptions conn_opts = MQTTClient_connectOptions_initializer;
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MQTTClient_create(&client, ADDRESS, CLIENTID,
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MQTTCLIENT_PERSISTENCE_NONE, NULL);
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conn_opts.keepAliveInterval = 20;
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conn_opts.cleansession = 1;
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MQTTClient_setCallbacks(client, NULL, connlost, msgarrvd, delivered);
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MQTTClient_destroy(&client);
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printf("\nExiting\n");
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return 0;
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} |