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node.js - Node.js 中的 Websocket 连接在发送时关闭

转载 作者:太空宇宙 更新时间:2023-11-04 00:34:26 25 4
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我尝试了许多不同的 npm web 套接字库(WebSocket、ws、express-ws 等),并且在每个库中我都有同样的问题。当我尝试发送 websocket 消息时,连接关闭。我接收消息没有问题,只是发送。

这是一个使用express和ws库进行测试的简单示例:Node.JS 端:

var server = require('http').createServer()
, url = require('url')
, WebSocketServer = require('ws').Server
, wss = new WebSocketServer({ server: server })
, express = require('express')
, app = express()
, port = 8080
, fs = require('fs');

app.use(function (req, res) {
var index = fs.readFileSync('./interface/index.html');
res.end(index);
});

wss.on('connection', function connection(ws) {
var location = url.parse(ws.upgradeReq.url, true);
console.log('open ws');
ws.on('message', function incoming(message) {
console.log('received: %s', message);
ws.send('test back');
});

ws.on('close', function () {
console.log('ws connection closed.');
})
});

server.on('request', app);
server.listen(port, function () { console.log('Listening on ' + server.address().port) });

和浏览器端(“./interface/index.html”):

window.WebSocket = window.WebSocket || window.MozWebSocket;
var port = 8080;
var ip = window.location.hostname;
var connection;

connection = new WebSocket('ws://' + ip + ':' + port);

connection.onopen = function () {
// connection is opened and ready to use
console.log('Web socket connection with', ip + ':' + port);
//sendQueue(msgQueue);

};

connection.onerror = function (error) {
// an error occurred when sending/receiving data
console.log('Web socket erorr with', ip + ':' + port + ':', error);
};

connection.onmessage = function (message) {
// try to decode json (I assume that each message from server is json)
console.log("Received ws");
// handle incoming message
};

connection.onclose = function (){
console.log("Web socket connection lost.");
};

function sendws() {
connection.send("test");
console.log("sent ws");
return false;
}
<head>
<meta charset="utf-8">

<title>Simple Web Socket test</title>
<!--<meta name="description" content="Simple Web Socket">-->
<meta name="author" content="Binoman">

<link rel="stylesheet" href="css/styles.css?v=1.0">

<!--[if lt IE 9]>
<script src="https://cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.3/html5shiv.js"></script>
<![endif]-->
</head>

<body>
<button type="button" name="button" onclick="sendws()">Send</button>
</body>

我不知道为什么会发生这种情况。我将 Node.js 更新到 6.7。在 Windows 10 上运行。我很感激你的帮助!谢谢!

最佳答案

我发现是我的防病毒软件的网络保护阻止了连接。我为我的本地主机地址破例,它现在工作正常。

关于node.js - Node.js 中的 Websocket 连接在发送时关闭,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39750993/

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