反序列化来自 websocket 响应的数据

Deserialize data from websocket response

我正在尝试使用包 msgpacket.

反序列化 WebSocket 响应

尝试反序列化数据包响应时出现错误:

Uncaught Error: Invalid argument: The byte array to deserialize is empty.

这里是一个基本的片段展示了这一点。我正在使用 echo.websocket.org 来测试这个。它发回它收到的相同响应。

this.socket = new WebSocket('wss://echo.websocket.org');

        this.socket.onopen = () => {
            console.log('connected');

            var sourceData = {
                hello: 1,
                world: "test"
            };

            var data = msgpack.serialize(sourceData);
            this.socket.send(data.buffer);

            var after = msgpack.deserialize(data.buffer);
            console.log(after);
        }

        this.socket.onmessage = function (event) {
            var data = msgpack.deserialize(new Uint8Array(event.data));
            console.log(data);
        };
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <script src="https://raw.githack.com/ygoe/msgpack.js/master/msgpack.min.js"></script>
</body>

</html>

我只是在收到 WebSocket 响应后尝试检索数据。

我能够解决问题。

我发现我需要将 blob 转换为数组缓冲区

这就是有效的方法

var blob = event.data;
var arrayBuffer = null;

arrayBuffer = await new Response(blob).arrayBuffer();

var data = msgpack.deserialize(arrayBuffer);
console.log(data);

在此处找到: