在使用Websocket protobuf協(xié)議傳輸時(shí)，onmessage收到這樣的對(duì)象，一臉懵逼
file
解碼成protobuf對(duì)象如下：
let reader = new FileReader();
reader.readAsArrayBuffer(data);
reader.onload = () => {
const buf = new Uint8Array(reader.result);
const response = Message.ChatMessage.deserializeBinary(buf);
// 成功回調(diào)
callback(response);
};
