接收WebSocket上的ArrayBuffer（ws）

我想处理使用ws从客户端收到的ArrayBuffer消息。 客户端，我直接收到一个ArrayBuffer感谢ws.binaryType ，但服务器端，我没有收到一个ArrayBuffer，但像这样（string？）：'<缓冲00 00 2a 00 00 00 00 00 00 00 00 00 00 00 00 00>'。

服务器如何接收ArrayBuffer？

客户端 ：

var ws = new WebSocket("ws://localhost:3000/"); ws.binaryType = 'arraybuffer'; ws.onopen = function() { var buffer = new ArrayBuffer(15); var dv = new DataView(buffer); dv.setInt16(1, 42); ws.send(buffer); }; 

服务器端 ：

 var express = require('express'), app = express(), server = require('http').createServer(), WebSocketServer = require('ws').Server, wss = new WebSocketServer({ server: server }); ... wss.on('connection', function(socket) { console.log(message); //log : <Buffer 00 00 2a 00 00 00 00 00 00 00 00 00 00 00 00 00> socket.on('message', function(message) { //would like to read and handle the arraybuffer properly }); }); 

Answer 1

只需要将缓冲区转换为ArrayBuffer

 var buf = new Uint8Array(message).buffer; var dv = new DataView(buf);