Qt WebSockets连接到Pusher服务

Question

I have a javascript snippet that connects to a pusher service that I need to convert to c++

<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>

I was able to bust open the connection packet to get a little idea of what is going on http://i.imgur.com/4iYIdLz.png But I can't seem to get a connection.

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();
}

What are the proper connection parameters I should use with c++ websockets to emulate the Javascript? I am just trying to receive the ticker data and assign it to an object or variable.

Answer 1

My Qt experience is a bit old, but from what I see you won't get the signals since you don't have an event loop running. You should not use the waitForConnected call, you should either run the a.exec() and let take it care of pumping the events. The only thing that seems weird is that you call the waitForConnected , most likely get an an error but still call a.exec() but don't get the signals after that (or maybe you are stopping the application after the failure?).