Question

我用express创建了一个简单的nodejs服务器来监听websocket连接，接收＆＃34; ping＆＃34;字符串并返回＆＃34; pong＆＃34;回到客户端。

除了客户端没有收到＆＃34; pong＆＃34;从服务器，即使服务器据称发送它。不确定问题是在客户端还是服务器端。我也在localhost上运行它，但这不应该是一个问题。

服务器

var express = require('express');
var WebSocketServer = require('ws').Server;
var app = express();

var wsServer = app.listen(3000, function() {
  var host = wsServer.address().address;
  var port = wsServer.address().port;
  console.log('App listening at ws://%s:%s', host, port);
});

var wss = new WebSocketServer({server: wsServer});
wss.on('connection', function connection(ws) {
  ws.on('message', function incoming(message) {
    console.log('Got: %s', message);
    ws.send('Pong');
    console.log('Sent Pong');
  });

  ws.on('close', function() {

    console.log('Closed Connection');
  });
});

module.exports = server;

客户端

<!DOCTYPE HTML>
<html>

<head>
    <script type="text/javascript">
        if ("WebSocket" in window) {
            console.log("WebSocket is supported by your Browser!");
        }
        else {
            console.log("WebSocket NOT supported by your Browser!");
        };
    </script>

    <script type="text/javascript">
        function WebSocketTest() {
            var ws = new WebSocket("ws://localhost:3000");
            ws.onopen = function() {
                var msg = {
                    msg: 'ping'
                };
                ws.send('Ping');
                console.log('Message sent to server');
            };

            ws.onmessage = function(evt) {
                var received_msg = evt.data;
                console.log('Message received from server: ' + received_msg);
            };

            ws.onclose = function() {
                console.log('Connection closed');
            };
        };
    </script>
</head>

<body>
    <div id="sse">
        <a href="javascript:WebSocketTest()">Run WebSocket</a>
    </div>
</body>

</html>

Websocket客户端没有使用express从节点服务器接收响应

0 个答案: