nodejs 使用nodejs-websocket模块实现点对点
2018-12-31 本文已影响2人
老王420
1、首先安装好nodejs-websocket
npm install nodejs-websocket --save -g
2、编写服务端
var ws = require("nodejs-websocket")
var AllUserData = new Array()
// Scream server example: "hi" -> "HI!!!"
var server = ws.createServer(function (conn) {
console.log("New connection")
conn.on("text", function (str) {
console.log("Received "+str)
AllUserData.push({
'id':str,
'ws':conn
})
conn.sendText(str.toUpperCase()+"!!!")
})
conn.on("close", function (code, reason) {
console.log("Connection closed")
// 当用户退出的时候捕捉到退出的用户
for (var i=0 in AllUserData) {
if (AllUserData[i].ws == conn) {
console.log(AllUserData[i])
}
}
})
}).listen(8001)
3、简易客户端
<!DOCTYPE html>`
<html>`
<head>`
<title>django-websocket</title>`
script src=``"[http://code.jquery.com/jquery-1.11.1.min.js](http://code.jquery.com/jquery-1.11.1.min.js)"``></script>`
<script type=``"text/javascript"``>``//<"``);`
socket.onopen =` `function` `() {`
console.log(``'WebSocket open'``);``//成功连接上Websocket
};`
socket.onmessage =` `function` `(e) {
console.log(``'message: '` `+ e.data);``//打印出服务端返回过来的数据`
$(``'#messagecontainer'``).prepend(``'<p>'` `+ e.data +` `'</p>'``);`
};`
// Call onopen directly if socket is already open`
if` `(socket.readyState == WebSocket.OPEN) socket.onopen();`
window.s = socket;`
});`
$(``'#send_message'``).click(``function` `() {`
//如果未连接到websocket`
if` `(!window.s) {`
alert(``"websocket未连接."``);`
}` `else` `{`
window.s.send($(``'#message'``).val());``//通过websocket发送数据`
}`
});`
$(``'#close_websocket'``).click(``function` `() {`
if` `(window.s) {`
window.s.close();``//关闭websocket`
console.log(``'websocket已关闭'``);`
}`
});`
});`
//]]></script>`
</head>`
<body>`
<br>`
<input type=``"text"` `id=``"message"` `value=``"user1"``/>`
<button type=``"button"` `id=``"connect_websocket"``>连接 websocket</button>`
<button type=``"button"` `id=``"send_message"``>发送 message</button>`
<button type=``"button"` `id=``"close_websocket"``>关闭 websocket</button>`
<h1>Received Messages</h1>`
<div id=``"messagecontainer"``>`
</div>`
</body>`
</html>`
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