How to handle socket.io disconnect by client by le

2019-07-18 01:27发布

站内问答 / JavaScript
1924 3 5

I have a socket.io application with node.js and was wondering what possibilities exist to respond to a client simply closing their browser window. Is there anyway to know that this has been done? What kinda of signal can been sent to the server?

If I don't have a way of doing telling if a particular client has disconnected what else can I do?

3条回答
ら.Afraid
2楼-- · 2019-07-18 01:59

I have a socket.io application with node.js and was wondering what possibilities exist to respond to a client simply closing their browser window. Is there anyway to know that this has been done? What kinda of signal can been sent to the server?

Your socket on the node.js side will receive a "disconnect" event when the browser closes the connection, which you can then react to.

查看更多
0人赞 添加讨论(0) 举报
女痞
3楼-- · 2019-07-18 02:16

When a client closes their browser window, socket.io fires a special 'disconnect' event.

Assuming you've required socket.io in your node server file

var io = require('socket.io');

then you can listen for the 'disconnect' event fired by each socket:

io.on('connection', function(socket){
  console.log('a user connected');
  socket.on('disconnect', function(){
    console.log('user disconnected');
  });
});

Note - socket here is given by:

io.on('connection', function(socket){
  console.log('a user connected');
});

source: http://socket.io/get-started/chat/

查看更多
0人赞 添加讨论(0) 举报
太酷不给撩
4楼-- · 2019-07-18 02:20

You want to fire a message over your socket in an unload trigger.

<body onunload="sendBrowserClosedMessageToServer()">

Or whatever you call your hook.

查看更多
0人赞 添加讨论(0) 举报
登录 后发表回答
相关问题
查看全部
相关文章
查看全部
收藏的人(5)