QWebSocket 客户端示例
说明
EchoClient 示例实现了一个 WebSocket 客户端，它向 WebSocket 服务器发送消息，并转储得到的回复。该示例最好与 EchoServer 示例一起使用。
代码
我们首先连接到 `connected()` 信号。
EchoClient::EchoClient(constQUrl&url, bool debug、 QObject*parent) ： QObject(parent),m_debug(debug) {if(m_debug) qDebug() << "WebSocket server:" << url; connect(&m_webSocket, &EchoClient)QWebSocket::connected, this, &EchoClient::onConnected); connect(&m_webSocket, &m_webSocket.open(url); }QWebSocket::disconnected, this, &EchoClient::closed); m_webSocket.open(url); }
连接完成后，我们将打开连接到给定url 的套接字。
voidEchoClient::onConnected() {if(m_debug) qDebug() << "WebSocket connected"; 连接（&m_webSocket, &QWebSockettextMessageReceived, this, &EchoClient::onTextMessageReceived); m_webSocket.sendTextMessage(QStringLiteral("你好，世界！")); }
客户端连接成功后，我们连接到 `onTextMessageReceived()` 信号，并发送 "Hello, world!"。如果与 EchoServer 连接，我们将收到同样的回传信息。
voidEchoClient::onTextMessageReceived(QStringmessage) {if(m_debug) qDebug() << "Message received:" << message; m_webSocket.close(); }
每当收到一条信息，我们就将其写出。
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