Question

是否有适用于Qt的WebSockets示例？

Answer 1

您还可以查看QtWebSockets。 QtWebSockets可用于客户端和服务器应用程序，并通过Autobahn测试套件。

Answer 2

QtWebKit内部的QWebView支持使用Web套接字（来自HTML5标准）。我已多次使用它们而没有任何问题。

Answer 3

我创建了一个例子。这是代码：

inspection_server.hpp：

#ifndef __INSPECTION_SERVER_HPP__
#define __INSPECTION_SERVER_HPP__

#include <QWebSocketServer>
#include <QWebSocket>
#include <QObject>
#include <iostream>
#include <memory>

class InspectionServer;

typedef std::shared_ptr<QWebSocketServer> QWebSocketServerPtr;
typedef std::shared_ptr<QWebSocket> QWebSocketPtr;
typedef std::shared_ptr<InspectionServer> InspectionServerPtr;

class InspectionServer: public QObject
{
    Q_OBJECT

    QWebSocketServerPtr websocketServer;
    QList<QWebSocketPtr> clients;

public:
    InspectionServer(uint16_t port);

signals:
    void closed();

private slots:
    void onNewConnection();
    void processTextMessage(const QString& message);
    void socketDisconnected();

};

#endif

inspection_server.cpp：

#include "inspection_server.hpp"

#include <QDebug>

InspectionServer::InspectionServer(uint16_t port)
    : websocketServer(new QWebSocketServer(QStringLiteral("Inspection server"), QWebSocketServer::NonSecureMode))
{
    if(this->websocketServer->listen(QHostAddress::Any, port))
    {
        QObject::connect(websocketServer.get(), SIGNAL(newConnection()), this, SLOT(onNewConnection()));
    }
    else
    {
        throw std::runtime_error("InspectionServer: failed to listen");
    }
}

void InspectionServer::onNewConnection()
{
    qInfo() << "InspectionServer::onNewConnection";
    QWebSocketPtr socket(this->websocketServer->nextPendingConnection());

    QObject::connect(socket.get(), SIGNAL(textMessageReceived(const QString&)), this, SLOT(processTextMessage(const QString&)));
    QObject::connect(socket.get(), SIGNAL(disconnected()), this, SLOT(socketDisconnected()));

    this->clients.append(socket);
}

void InspectionServer::processTextMessage(const QString& message)
{
    qInfo() << "InspectionServer::processTextMessage: " << message;
}

void InspectionServer::socketDisconnected()
{
    qInfo() << "InspectionServer::socketDisconnected";
}

main.cpp中：

#include "inspection_server.hpp"

#include <QCoreApplication>

int main(int argc, char** argv)
{
    QCoreApplication app(argc, argv);

    InspectionServer server(1234);

    return app.exec();
}

以下是在Web浏览器中测试的方法：

<html>
<body>
<button onClick="initWebSocket();">Connect</button>
<br>
<input type="text" id="messageInput">
<button onClick="sendMessage();">Send message</button>
</body>
</html>

<script type="text/javascript">

var websocket = null;

function initWebSocket()
{
    websocket = new WebSocket("ws://localhost:1234");
}

function sendMessage()
{
    websocket.send(document.getElementById("messageInput").value);
}

</script>

这是一个很好的参考链接： http://code.qt.io/cgit/qt/qtwebsockets.git/tree/examples/websockets/echoserver

Qt有一个WebSockets示例吗？

3 个答案: