RABBIT-MQTT+PMQTT Protocol +paho Library (ubuntu16.04)

RABBIT-MQTT+PMQTT Protocol +paho Library (ubuntu16.04).

Steps

1 Download Installation Rabiit-mq Mqtt-server
Just use the Deb bag.
Another need
sudo apt install Erlang

2 start
Sudo/etc/init.d/rabbitmq-server restart

3 mqtt-3.1 protocol Support
Rabbitmq-plugins Enable Rabbitmq_mqtt

4 Open Start Web Management
Rabbitmq-plugins Enable Rabbitmq_management

5 Download Compile PAHO CPP

6 Running MQTT Pub example, packaged in C + + Hapowapper, combined with Protoc buf

compilation: g++ main.cpp-o-lpaho-mqtt3c--std=c++11 code

C-Call library for lower Hapo is encapsulated in C + +-hapowapper.h

Main.cpp

#include #include #include "hapoWapper.h" using Std::cout; Using Std::endl; Using Std::shared_ptr; #define ADDRESS "127.0.0.1:1883" #define CLIENTID "58daf13e258951000ab2b38f" #define TOPIC1 "#define TOPIC2" Normal man "const char TOKEN =" ybljnekvdovypfjo7ejztfvoya94xv4gbuvb9u85kjy= "; void fdelivered (void *context, Mqttclient_deliverytoken dt) {printf ("message with token value%d IBuySpy confirmed\n", DT ); int Fmsgarrvd (void *context, char *topicname, int topiclen, mqttclient_message *message) {int i; char payloadptr; printf ( "Message arrived\n"); printf ("topic:%s\n", topicname); printf ("message:"); if (!strcmp (Topicname,topic1)) {printf ("Got token size =%d,%s\n", Message->payloadlen, (char) message->payload) ; Payloadptr = (char) message->payload; for (i=0 Ipayloadlen; i++) {Putchar (*payloadptr++);} putchar (' \ n '); Mqttclient_freemessage (&message); Mqttclient_free (topicname); return 1; } void Fconnlost (void *context, char *cause) {printf ("\nconnection lost\n "); printf ("Incorporated:%s\n", Incorporated); int main (int argc, char argv]) {mqttclient_connectoptions conn_opts = Mqttclient_connectoptions_initializer; conn_ Opts.keepaliveinterval = 20; Conn_opts.cleansession = 1; Clientparams paras (address,clientid,conn_opts); Cbgroups CBS (FCONNLOST,FDELIVERED,FMSGARRVD); Pahowapper WAP (paras); Wap.connect (CBS); printf ("Subcribe topic:%s%s\n", topic1,topic2); Wap.subscribe (topic2,1); Wap.subscribe (topic1,1); printf ("Publish with topic:%s\n", TOPIC2); Auto words = "Coooooooool"; Wap.publish (Topic2,words,strlen (words), 1); Char ch; do {ch =getchar (), while (ch!= ' q ' && ch!= ' Q '); return 0; }

HapoWapper.h

#ifndef hapo_wapper_h #define HAPO_WAPPER_H #include "MQTTClient.h" #include #include typedef void (*connlost) (void, char); typedef void (*delivered) (void *context, Mqttclient_deliverytoken dt); typedef INT (* MSGARRVD) (void *context, char *topicname, int topiclen, mqttclient_message *message); Class Clientparams {Public:clientparams () {}; ~clientparams () {}; const char _server_uri; const char _client_id; Mqttclient_connectoptions _conn_opts; Clientparams (const char*a, const char B, const mqttclient_connectoptions & O): _server_uri (a), _client_id (b), _conn_ OPTs (o) {}; Clientparams & operator= (const CLIENTPARAMS & CP) {if (&CP = = this) return *this; _server_uri = Cp._server_uri; _ client_id = cp._client_id; _conn_opts = cp._conn_opts; return *this; }; }; Class Cbgroups {public:connlost CONNECT_CB; delivered DELIVERED_CB; MSGARRVD MSGARRVD_CB (cbgroups C, connlost D, MSGARRVD m): CONNECT_CB (c), DELIVERED_CB (d), MSGARRVD_CB (m) {}; }; Class Pahowapper {public:Pahowapper () {}; ~pahowapper () {}; Pahowapper (const CLIENTPARAMS & paras) {_paras = paras; printf ("Client%s access%s\n", _paras._client_id, _paras._ Server_uri); Mqttclient_create (&_client, _paras._server_uri, _paras._client_id, Mqttclient_persistence_none, NULL); }; int Connect (const cbgroups & CBS) {int rc; Mqttclient_setcallbacks (_client, NULL, CBS.CONNECT_CB, CBS.MSGARRVD_CB, CBS.DELIVERED_CB); if (rc = Mqttclient_connect (_client, & (_paras._conn_opts))!= mqttclient_success) {printf ("Failed to connect, Return code%d\n ", RC); Exit (-1); return RC; }; void Disconnect () {Mqttclient_disconnect (_client, 10000); Mqttclient_destroy (&_client); }; void Publish (const char topic, const void payload, int len, int qos_lvl) {Mqttclient_message pubmsg = Mqttclient_message_ initializer; Mqttclient_deliverytoken token; Pubmsg.payload = (void) payload; Pubmsg.payloadlen = Len; Pubmsg.qos = QOS_LVL; pubmsg.retained = 0; Mqttclient_publishmessage (_client, topic, &pubmsg, &token); printf ("Waiting for publication of%s\n" "" topic%s for client with ClientID:%s\n ", (char) payload, topic, _PARAS._CLIENT_ ID); }; void Subscribe (const char Topic,int qos_lvl) {mqttclient_subscribe (_client, topic, QOS_LVL); Private:mqttclient _client; Clientparams _paras; }; #endif