I am trying to connect to AWS IoT using the MQTT protocol, X508 client certificates, and on port 443. When I try to connect, I am gettingError: [-1] TCP connect completion failureprinted. I have included the cod
connectTimeout 连接超时时间 retryInterval 发布消息但没有收到服务器响应的话,重发retryInterval这么多秒;0关闭重发; ssl ssl操作,设置SSL属性 serverURIcount 服务器数量,默认是0 serverURIs 服务器地址 MQTTVersion MQTT版本:0-默认版本3.1.1,连接失败的话回退使用3.1版本;3-只会尝试用3.1版本和服务器建立连接;...
MQTTClient client; MQTTClient_create(&client, ADDRESS, SUB_CLIENTID, MQTTCLIENT_PERSISTENCE_NONE, NULL); 第二步:设置连接MQTT服务器的选项;MQTTClient_connectOptions conn_opts = MQTTClient_connectOptions_initializer; 第三步:设置回调函数;...
NULL,NULL); } free(hostname_plus_null); } else rc = PAHO_MEMORY_ERROR; } FUNC_EXIT_RC(rc); return rc; } /* * Return value: 1 - success, TCPSOCKET_INTERRUPTED - try again, anything else is failure */ int SSLSocket_connect(SSL* ssl, SOCKET sock, const char* hostname, int ver...
#include<stdio.h>#include<stdlib.h>#include<string.h>#include<MQTTClient.h>#defineADDRESS"tcp://localhost:1883"#defineCLIENTID"Client"#defineTOPIC"test"#defineQOS 1#defineTIMEOUT 10000Lintmain(){ MQTTClient client; MQTTClient_connectOptions conn_opts = MQTTClient_connectOptions_initializer;intrc...
为了简单起见,我们使用Paho自带的示例程序。打开paho.mqtt.c/src/samples下的MQTTClient_publish .c文件。将以下的代码更改: #define ADDRESS “tcp://m2m.eclipse.org:1883” #define CLIENTID “ExampleClientPub” #define TOPIC “MQTT Examples” ...
) paho-mqtt3as : as表示的是 异步+加密asynchronous+OpenSSL。 paho-mqtt3c c 表示的应该是(Synchronize),一般性能较差,是发送+等待模式。 paho-mqtt3cs : 同上,增加了一个OpenSSL而已 于是在build文件夹的src中,有了编译后的库文件,命令执行完成后可以再PAHO_INSTALL_PREFIX设置的路径看到如下的文件 4...
问使用PAHO C的SSL上的MQTTEN安装依赖 yarn add paho-mqtt 新建mqtt模块 // utils/mqtt.ts import ...
https://mqtt.org/software/ https://github.com/eclipse/paho.mqtt.c 基础 mosquitto client是异步库,paho.mqtt.c.git支持同步和异步两种API。paho应用调用MQTTClient_setCallbacks(
24int CONNECT = 1;25volatile MQTTClient_deliveryToken deliveredtoken;26 27void delivered(void *context, MQTTClient_deliveryToken dt)28 { 29 printf("Message with token value %d delivery confirmed\n", dt);30 deliveredtoken = dt;31 } 32 33int msgarrvd(void *context, char *topicName, int ...