c++ - QWebSocketServer 仍在连接

Question

我正在编写一个简单的服务器，它通过 QWebSocketServer 将一些数据传递给 javascript(与 qt doc 基本相同...)。

还有，请看这里:

void DebuggerServer::onNewConnection() {
    puts("C");
    QWebSocket *pSocket = m_pWebSocketServer->nextPendingConnection();

    connect(pSocket, &QWebSocket::textMessageReceived, this, &DebuggerServer::processMessage);
    connect(pSocket, &QWebSocket::disconnected, this, &DebuggerServer::socketDisconnected);

    printf("onNewConnection");

    m_clients << pSocket;
}

我尝试在此处 puts("C");，但我什么也没得到。

在我的浏览器(最新版本的 chrome)中，如果我向服务器发送请求，我会得到一些信息，比如套接字正在连接。

我试过这些东西:关闭防火墙、更改端口、更改浏览器、更改编译模式。

我不确定这是否涉及这个问题，我正在通过 msvc15 和手动 moc header 编译这些代码。

此代码由 loadlibrary 注入(inject)到其他应用程序中。

服务器的完整源代码如下...

服务器.cpp

#include "Server.h"
#include "Inspector.h"

#include "Server.moc"

#include <QtCore/QCoreApplication>

const int port = 5642;
DebuggerServer *server;

void StartServer() {
    server = new DebuggerServer(port);
}

QT_USE_NAMESPACE

DebuggerServer::DebuggerServer(quint16 port, QObject *parent) :
    QObject(parent),
    m_pWebSocketServer(Q_NULLPTR),
    m_clients()
{
    m_pWebSocketServer = new QWebSocketServer(QStringLiteral("mvInspector"),
        QWebSocketServer::NonSecureMode,
        this);
    puts("A");
    if (m_pWebSocketServer->listen(QHostAddress::Any, port))
    {
        puts("B");
        connect(m_pWebSocketServer, &QWebSocketServer::newConnection,
            this, &DebuggerServer::onNewConnection);
    }
}


DebuggerServer::~DebuggerServer() {
    m_pWebSocketServer->close();
    qDeleteAll(m_clients.begin(), m_clients.end());
}

template<class T>
QString toStr(QList<T> y) {
    QString rst;
    for (T x : y)
        rst += "\n" + QString(x);
    return rst;
}

#define ASSERT_N(x) if (frame.length() != x) rst = "ERRON, wrong number of arguments."; else

void DebuggerServer::processMessage(QString message) {
    QWebSocket *pSender = qobject_cast<QWebSocket *>(sender());
    QStringList frame = message.split("\n");
    QString rst;

    rst += frame[0];
    if (frame[0] == "getRootWindows") {
        ASSERT_N(1)
        rst += toStr(getRootWindows());
    }
    if (frame[0] == "getChildren") {
        ASSERT_N(2)
        rst += toStr(getChildren(frame[1].toInt()));
    }
    if (frame[0] == "getPropertyName") {
        ASSERT_N(2)
        rst += toStr(getPropertyName(frame[1].toInt()));
    }
    if (frame[0] == "getProperty") {
        ASSERT_N(3)
        rst += getProperty(frame[1].toInt(), frame[2].toStdString().c_str()).toBase64();
    }
    if (frame[0] == "getClassname") {
        ASSERT_N(2)
        rst += getClassname(frame[1].toInt());
    }
    if (frame[0] == "getClassname") {
        ASSERT_N(2)
        rst += getObjectname(frame[1].toInt());
    }
    printf(rst.toStdString().c_str());
    pSender->sendTextMessage(rst);
}

void DebuggerServer::socketDisconnected()
{
    QWebSocket *pClient = qobject_cast<QWebSocket *>(sender());
    if (pClient) {
        m_clients.removeAll(pClient);
        pClient->deleteLater();
    }
    printf("socketDisconnected");
}

void DebuggerServer::onNewConnection() {
    puts("C");
    QWebSocket *pSocket = m_pWebSocketServer->nextPendingConnection();

    connect(pSocket, &QWebSocket::textMessageReceived, this, &DebuggerServer::processMessage);
    connect(pSocket, &QWebSocket::disconnected, this, &DebuggerServer::socketDisconnected);

    printf("onNewConnection");

    m_clients << pSocket;
}

服务器.h

#pragma once
#include <QtCore/qobject.h>
#include <QtWebSockets/qwebsocketserver>
#include <QtWebSockets/QWebSocket>

void StartServer();

class DebuggerServer : public QObject {
    Q_OBJECT
public:
    explicit DebuggerServer(quint16 port, QObject *parent = Q_NULLPTR);
    virtual ~DebuggerServer();

private Q_SLOTS:
    void onNewConnection();
    void processMessage(QString message);
    void socketDisconnected();

private:
    QWebSocketServer *m_pWebSocketServer;
    QList<QWebSocket *> m_clients;
};

主程序

#include <Windows.h>

#include "../Server.h"

BOOL APIENTRY DllMain(HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved){
    switch (ul_reason_for_call) {
    case DLL_PROCESS_ATTACH:
        StartServer();
        break;
    case DLL_PROCESS_DETACH:
        break;
    case DLL_THREAD_ATTACH:
        break;
    case DLL_THREAD_DETACH:
        break;
    }
    return TRUE;

}

Answer 1

最后，至少在 windows 10 (msvc) 上，它似乎是 Qt 5.4.1 的一个错误。

我可以让两个 Qt 应用程序通过 websocket 连接，但不能让 At 应用程序与普通浏览器连接。

所以，我使用另一个 websocket 库并尊重原始的 Qt websocket。