未收到 Websocket 到客户端的消息 - Cloudflare

问：

您好，我是 cloudflare websockts 的新手。我有下面的 cloudflare worker 代码和 js 代码。当有效负载内容“完成”发送给工作线程时，它应该返回“服务器收到”完成“消息。但我什么也没收到。我正在使用 Chrome 的开发者控制台来执行 JS 代码。

Cf 工人代码 ：

addEventListener('fetch', (event) => {
event.respondWith(handleRequest(event.request));
});
async function handleRequest(request) {
const upgradeHeader = request.headers.get('Upgrade');

if (!upgradeHeader || upgradeHeader !== 'websocket') {
return new Response('Expected Upgrade: websocket', { status: 426 });
}

const webSocketPair = new WebSocketPair();
const [client, server] = Object.values(webSocketPair);

server.accept();

// Event listener for the 'message' event on the server WebSocket
server.addEventListener('message', (event) => {
console.log('Received message from client:', event.data);

// Check if the received message is 'done'
if (event.data === 'done') {
// Send a response back to the client
client.send('Server received "done" message.');
}
});

// Return the server WebSocket without closing it
return new Response(null, {
status: 101,
webSocket: server,
});
}

Js 客户端代码：

const wsUrl = 'wss://worker.subdomain.workers.dev';
const socket = new WebSocket(wsUrl);

socket.addEventListener('open', (event) => {
console.log('WebSocket connection opened:', event);

// Send a plain text message
const plainTextMessage = 'done';  //here is the payload
socket.send(plainTextMessage);
});

socket.addEventListener('message', (event) => {
console.log('Received message:', event.data);

// You can handle the received message here
// If the received message is a JSON string, you can parse it back to an object
try {
const receivedJson = JSON.parse(event.data);
console.log('Parsed JSON:', receivedJson);
} catch (error) {
console.log('Received plain text message:', event.data);
}
});

socket.addEventListener('error', (event) => {
console.error('WebSocket error:', event);
});

socket.addEventListener('close', (event) => {
console.log('WebSocket connection closed:', event);
});

在这里，我要求向客户发送消息。client.send('Server received "done" message.');

当客户端发送“完成”时，cloudflare worker 的预期响应是：“服务器收到”完成“消息。

简而言之，服务器应发送“服务器收到”完成“消息。TO CLIEN，当客户端发送到服务器时完成。