MQTT 通讯测试
服务器C代码：
//编译gcc -o mqttclient mqttclient.c -lpaho-mqtt3c -I ./../paho.mqtt.c/src/ -L ../paho.mqtt.c/build -pthread -Imqtt
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "MQTTClient.h"
#include <unistd.h>
#include <sys/stat.h>
#define NUM_THREADS 2
#define ADDRESS "tcp://192.168.123.172:1883"
#define CLIENTID "ExampleClient_pub"
#define SUB_CLIENTID "ExampleClient_sub" //更改此处客户端ID
#define TOPICPUB "Question" //更改发送的话题
#define TOPICSUB "temperature"
#define QOS 1
#define TIMEOUT 10000L
#define DISCONNECT "out"
int CONNECT = 1;
volatile MQTTClient_deliveryToken deliverytoken;
long PAYLOADLEN;
char* PAYLOAD;
char data[10];
void delivered(void *context, MQTTClient_deliveryToken dt)
{
printf("消息 token %d 确认发送\n", dt);
deliverytoken = dt;
}
int msgarrvd(void *context, char *topicName, int topicLen, MQTTClient_message *message)
{
int i;
char* payloadptr;
printf("消息到达\n");
printf(" 主题: %s\n", topicName);
printf(" 消息: \n");
payloadptr = message->payload;
if (strcmp(payloadptr, DISCONNECT) == 0) {
printf("\n out!! ");
CONNECT = 0;
}
for (i = 0; i < message->payloadlen; i++) {
putchar(*payloadptr++);
}
printf("\n\n");
printf("接受的消息：\n id=%s version=%d len=%d load=%s qos=%d dup=%d gid=%d \n",
message->struct_id,message->struct_version,message->payloadlen,(char *)message->payload,
message->qos,message->retained,message->dup,message->msgid);
printf("payloadptr=%s \n\n",payloadptr);
//strncpy(dest, src, 10);
strncpy(data,message->payload,message->payloadlen);
printf("消息: %s\n\n",data);
MQTTClient_freeMessage(&message);
MQTTClient_free(topicName);
return 1;
}
void connlost(void *context, char *cause)
{
printf("\n连接中\n");
printf(" 原因: %s\n", cause);
}
//发布消息
void *pubClient(void *threadid) {
long tid;
tid = (long)threadid;
int count = 0;
printf("pub线程 #%ld!\n", tid);
//声明一个MQTTClient
MQTTClient client;
//初始化MQTT Client选项
MQTTClient_connectOptions conn_opts = MQTTClient_connectOptions_initializer;
//#define MQTTClient_message_initializer { {'M', 'Q', 'T', 'M'}, 0, 0, NULL, 0, 0, 0, 0 }
MQTTClient_message pubmsg = MQTTClient_message_initializer;
//声明消息token
MQTTClient_deliveryToken token;
int rc;
//使用参数创建一个client，并将其赋值给之前声明的client
MQTTClient_create(&client, ADDRESS, CLIENTID,
MQTTCLIENT_PERSISTENCE_NONE, NULL);
conn_opts.keepAliveInterval = 20;
conn_opts.cleansession = 1;
//使用MQTTClient_connect将client连接到服务器，使用指定的连接选项。成功则返回MQTTCLIENT_SUCCESS
if ((rc = MQTTClient_connect(client, &conn_opts)) != MQTTCLIENT_SUCCESS)
{
printf("连接失败 返回值 %d\n", rc);
exit(EXIT_FAILURE);
}
PAYLOAD = "What's the temperature";
// printf("%s\n", PAYLOAD);
pubmsg.payload = PAYLOAD;
pubmsg.payloadlen = (int)strlen(PAYLOAD);
pubmsg.qos = QOS;
pubmsg.retained = 0;
//循环发布
while (CONNECT) {
MQTTClient_publishMessage(client, TOPICPUB, &pubmsg, &token);
printf("等待 %d 秒 发布:%s\n"
"发布:%s 客户端ID: %s\n",
(int)(TIMEOUT/1000), PAYLOAD, TOPICPUB, CLIENTID);
rc = MQTTClient_waitForCompletion(client, token, TIMEOUT);
printf("消息token %d 传递\n", token);
// thread sleep
usleep(2000000L);//接受延时时间
}
MQTTClient_disconnect(client, 10000);
MQTTClient_destroy(&client);
}
//订阅消息
void *subClient(void *threadid) {
long tid;
tid = (long)threadid;
printf("sub线程 #%ld!\n", tid);
MQTTClient client;
MQTTClient_connectOptions conn_opts = MQTTClient_connectOptions_initializer;
int rc;
int ch;
MQTTClient_create(&client, ADDRESS, SUB_CLIENTID,
MQTTCLIENT_PERSISTENCE_NONE, NULL);
conn_opts.keepAliveInterval = 20;
conn_opts.cleansession = 1;
//设置回调函数
MQTTClient_setCallbacks(client, NULL, connlost, msgarrvd, delivered);
if ((rc = MQTTClient_connect(client, &conn_opts)) != MQTTCLIENT_SUCCESS)
{
printf("连接失败 返回值 %d\n", rc);
exit(EXIT_FAILURE);
}
printf("订阅是主题 %s\n 客户端 %s QoS=%d\n\n"
"按 《回车》确认\n\n", TOPICSUB, SUB_CLIENTID, QOS);
MQTTClient_subscribe(client, TOPICSUB, QOS);
do
{
ch = getchar();
} while (ch != 'Q' && ch != 'q');
//quit
MQTTClient_unsubscribe(client, TOPICSUB);
MQTTClient_disconnect(client, 10000);
MQTTClient_destroy(&client);
pthread_exit(NULL);
}
int main(int argc, char* argv[])
{
pthread_t threads[NUM_THREADS];
pthread_create(&threads[0], NULL, subClient, (void *)0);
pthread_create(&threads[1], NULL, pubClient, (void *)1);
pthread_exit(NULL);
}
// Client Android配置：
public static final String URL = "tcp://192.168.123.172:1883";
private String userName = "admin";
private String password = "password";
private String clientId = "901000";
private MqttConnectOptions mMqttConnectOptions;//mqtt 配置
String TAG = "Mqtt:\n";
订阅是主题 temperature
客户端 ExampleClient_sub QoS=1
按 《回车》确认
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 2 传递
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 3 传递
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 4 传递
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 5 传递
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 6 传递
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 7 传递
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 8 传递
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 9 传递
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 10 传递
消息到达
主题: temperature
消息:
88888°
接受的消息：
id=MQTM version=1 len=7 load=88888°ket.c qos=1 dup=0 gid=0
payloadptr=ket.c
消息: 88888°
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 11 传递
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 12 传递
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 13 传递
消息到达
主题: temperature
消息:
88888°
接受的消息：
id=MQTM version=1 len=7 load=88888°ket.c qos=1 dup=0 gid=0
payloadptr=ket.c
消息: 88888°
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 14 传递
消息到达
主题: temperature
消息:
88888°
接受的消息：
id=MQTM version=1 len=7 load=88888°ket.c qos=1 dup=0 gid=0
payloadptr=ket.c
消息: 88888°
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 15 传递
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 16 传递
等待 10 秒 发布:What’s the temperature
发布:Question 客户端ID: ExampleClient_pub
消息token 17 传递
//测试发布消息L
bt_test.setOnClickListener ( new View.OnClickListener ( ) {
@Override
public void onClick(View view) {
final String topic = "temperature";
final String TOPIC_MESSAGE = "88888°";
new Thread ( new Runnable ( ) {
public void run() {
MqttManager.getInstance ().publish ( topic,1,TOPIC_MESSAGE.getBytes () );
tv_mag.append ( "发布测试 :\n topic:"+topic+"\r\r\r message"+TOPIC_MESSAGE+"\n");
tv_mag_move(tv_mag);
}
} ).start ( );
}
});
bt_sub.setOnClickListener ( new View.OnClickListener ( ) {
@Override
public void onClick(View view) {
final String topic = "temperature";
new Thread(new Runnable() {
@Override
public void run() {
MqttManager.getInstance().subscribe(topic, 1);
tv_mag.append ( "订阅主题 SUB:\n topic:"+topic+"\n");
tv_mag_move(tv_mag);
}
}).start();
}
} );
@Subscribe(threadMode = ThreadMode.MAIN,sticky = true)
public void Event(MqttMessage message) {
Log.d ( TAG,"接受到messeage == "+message);
tv_mag.append("\n 接受到:"+message.toString ());
tv_mag_move(tv_mag);
}