Qt websockets 连接到 Pusher 服务

Question

我有一个 javascript sn-p 连接到我需要转换为 c++ 的推送服务

<script src="//js.pusher.com/2.2/pusher.min.js" type="text/javascript"></script>
<script type="text/javascript">
var pusher = new Pusher("cb65d0a7a72cd94adf1f");
var channel = pusher.subscribe("ticker.155");
channel.bind("message", function(data) {
        //console.log(data);
        var topbuy = data.trade.topbuy;
        var topsell = data.trade.topsell;
        console.log("Buy Price: ", topbuy.price,
                "Buy Quantity:", topbuy.quantity),
        console.log("Sell Price: ", topsell.price,
                "Sell Quantity:", topsell.quantity);
});
</script>

我能够打开连接数据包以了解发生了什么http://i.imgur.com/4iYIdLz.png 但我似乎无法获得连接。

socketclass.cpp

#include "socketclass.h"

socketClass::socketClass(QObject *parent) :
    QObject(parent)
{
}

void socketClass::Test()
{
    socket = new QTcpSocket(this);
    connect(socket,SIGNAL(connected()), this, SLOT(connected()));
    connect(socket,SIGNAL(disconnected()), this, SLOT(disconnected()));
    connect(socket,SIGNAL(readyRead()), this, SLOT(readyRead()));
    connect(socket,SIGNAL(bytesWritten(qint64)), this, SLOT(bytesWritten(qint64)));

    qDebug() << "......Connecting";

    socket->connectToHost("ws.pusherapp.com/app/cb65d0a7a72cd94adf1f?protocol=7&client=js&version=2.2.3&flash=false",80);

    if(!socket->waitForConnected(1000))
    {
        qDebug() << "Error:  "  << socket->errorString();
    }

}

void socketClass::connected()
{
    //meat and potatoes goes here
    qDebug() << "......Connected";
    //socket->write("HEAD / HTTP/1.0\r\n\r\n\r\n");
    socket->event();
}

void socketClass::disconnected()
{
    qDebug() << "......Disconnected";
}

void socketClass::bytesWritten (qint64 bytes)
{
    qDebug() << "We wrote:   " << bytes;
}

void socketClass::readyRead()
{
    qDebug() <<  "Reading..,,";
    qDebug() << socket->readAll();
}

socketclass.h

#ifndef SOCKETCLASS_H
#define SOCKETCLASS_H
#include <QDebug>
#include <QObject>
#include <QTcpSocket>
#include <QAbstractSocket>

class socketClass : public QObject
{
    Q_OBJECT
public:
    explicit socketClass(QObject *parent = 0);
    void Test();

signals:


public slots:
    void connected();
    void disconnected();
    void bytesWritten (qint64 bytes);
    void readyRead();

private:
    QTcpSocket *socket;

};

#endif // SOCKETCLASS_H

main.cpp

#include <QCoreApplication>
#include "socketclass.h"

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    socketClass mTest;
    mTest.Test();

    return a.exec();
}

我应该使用 c++ websockets 来模拟 Javascript 的正确连接参数是什么？ 我只是想接收代码数据并将其分配给一个对象或变量。

Answer 1

我的 Qt 体验有点老了，但据我所知，您不会收到信号，因为您没有运行事件循环。您不应该使用waitForConnected 调用，您应该运行a.exec() 并让它负责处理事件。唯一看起来很奇怪的是你打电话给waitForConnected，很可能得到一个错误但仍然打电话给a.exec() 但在那之后不要收到信号（或者您可能在失败后停止应用程序？）。