Qt ZMQ通信效率测试

1、zmq相关库编译：https://www.cnblogs.com/tyche116/p/12102761.html

cmake后打开ZeroMQ.sln解决方案，在解决方案配置以及解决方案平台选择需要编译的版本后，右键仅生成libzmq项目，即可在bin及lib中生成生成对应的dll,lib.

 2、Qt中测试所编译zmq是否正确可用

1）新建qt项目；

2）pro项目文件中添加依赖路径及依赖文件：

LIBS += -L$$PWD/../ZMQ/lib/Release -llibzmq-v140-mt-4_3_2
INCLUDEPATH += $$PWD/../ZMQ/include
DEPENDPATH += $$PWD/../ZMQ/include

3）pro项目文件添加 CONFIG += console 打开调试信息输出（命令行）窗口；

4）将编译生成的zmq dll复制到可执行文件exe目录下；

5）测试代码及测试结果：

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "zmq.h"

#include <iostream>

#include <QMessageBox>
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    int a,b,c;
    zmq_version(&a,&b,&c);
    std::cout << "zmq-version:" << a << "-" << b << "-" << c;
}

MainWindow::~MainWindow()
{
    delete ui;
}

6）编译正确且可以正常使用.

3、进程间通信测试

1）新建两个工程 server跟client

2）测试代码编写

server端代码

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "zmq.h"
#include <QThread>
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    server();
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::server(void)
{
    //Socket to talk to clients
    void *context = zmq_ctx_new ();
    void *responder = zmq_socket (context, ZMQ_REP);
    int rc = zmq_bind (responder, "tcp://*:5555");
    assert (rc == 0);
    while (1)
    {
        char buffer [20];
        const char * sendMsg = "[server]";
        int bytes = zmq_recv (responder, buffer, 20, 0);
        buffer[bytes] = '\0';
        printf ("Server have received %d bytes == \"%s\"\n",bytes,buffer);
        QThread::msleep (1);       //  Do some 'work'
        zmq_send (responder, sendMsg, strlen(sendMsg), 0);
    }
}

client端代码

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "zmq.h"
#include <QThread>

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    client();
}

MainWindow::~MainWindow()
{
    delete ui;
}

bool MainWindow::client()
{
    printf("Connecting to server...\n");

        void * context = zmq_ctx_new();
        void * socket = zmq_socket(context, ZMQ_REQ);
        zmq_connect(socket, "tcp://localhost:5555");

        for(int i = 0; i < 10; ++i)
        {
            char buffer[20];
            const char * snedMsg = "[client]";
            int bytes = zmq_send(socket, snedMsg, strlen(snedMsg), 0);

            bytes = zmq_recv(socket, buffer, 20, 0);
            buffer[bytes] = '\0';
            printf ("Client have received %d bytes == \"%s\"\n",bytes,buffer);

        }

        zmq_close(socket);
        zmq_ctx_destroy(context);

        return true;
}

3）分别编译并在同一台电脑上打开