【Qt QLocalSocket 链接本地服务】

// 创建 QLocalSocket 实例
QLocalSocket *socket = new QLocalSocket(this);

// 连接到本地服务器
socket->connectToServer("my_local_service");

// 检查连接状态
if (socket->waitForConnected(1000)) {
    qDebug() << "已连接到本地服务";
    
    // 发送数据
    socket->write("Hello, Server!");
    socket->flush();
    
    // 接收数据
    connect(socket, &QLocalSocket::readyRead, [=]() {
        QByteArray data = socket->readAll();
        qDebug() << "收到响应:" << data;
    });
} else {
    qDebug() << "连接失败:" << socket->errorString();
}

// 断开连接
socket->disconnectFromServer();

// GUI 应用连接到本地后台服务
socket->connectToServer("my_app_service");

// 插件通过本地套接字与主程序交互
socket->connectToServer("main_app_plugin_interface");

// 不同进程的组件通过本地套接字交换数据
socket->connectToServer("component_bridge");

// 客户端与本地守护进程通信
socket->connectToServer("system_daemon");

// 创建本地服务器
QLocalServer *server = new QLocalServer(this);

// 监听连接
if (!server->listen("my_local_service")) {
    qDebug() << "监听失败:" << server->errorString();
    return;
}

// 处理新连接
connect(server, &QLocalServer::newConnection, [=]() {
    QLocalSocket *clientConnection = server->nextPendingConnection();
    
    connect(clientConnection, &QLocalSocket::readyRead, [=]() {
        QByteArray data = clientConnection->readAll();
        qDebug() << "收到数据:" << data;
        
        // 发送响应
        clientConnection->write("Message received");
    });
    
    connect(clientConnection, &QLocalSocket::disconnected,
            clientConnection, &QLocalSocket::deleteLater);
});

QLocalServer::removeServer("my_local_service");

connect(socket, &QLocalSocket::errorOccurred, [=](QLocalSocket::LocalSocketError error) {
    qDebug() << "套接字错误:" << error;
});