[英]How to emit from Client Side to a routes file with Socket.io in Node.js
So I'm using a singleton pattern to set up my websocket. 因此,我使用单例模式来设置我的websocket。
var sio = require('socket.io')
var io = null;
exports.io = function () {
var socket;
if(io === null){ // Initialise if not already made
io = initialize(server);
}
return io;
};
exports.initialize = function(server) {
io = sio.listen(server);
var connections = [];
console.log('IO Initialized!\n')
io.on('connection', function(socket){
connections.push(socket);
console.log('Connected: %s sockets connected', connections.length);
socket.on('disconnect', function(data){
connections.splice(connections.indexOf(socket), 1);
console.log('Disconnected: %s sockets connected', connections.length);
});
// Update function used to send messages to and from backend
socket.on('update', function(data){
io.sockets.emit('new message', {msg: data});
});
});
};
And then in my public/javascript files I can call these like so 然后在我的public / javascript文件中,我可以这样称呼它们
$(function(){
var socket = io.connect();
socket.emit('update', 'Test Update');
socket.on('update', function(data){
console.log('here: ' + data);
});
});
and in my route file I have 在我的路线文件中
router.use(function(req, res, next){
if(socket === undefined){
socket = io.io();
}
next();
});
router.get('/', function(req, res, next){
socket.on('update', function(data){
console.log('in routes');
});
socket.emit('update', 'leaving routes');
});
I can emit successfully from the routes file to the public js file (from back end to front end). 我可以成功地将路由文件发送到公共js文件(从后端到前端)。 However, I can't send information from the public js file to the routes file, it only sends to the singleton pattern js file.
但是,我无法将信息从公共js文件发送到路由文件,而只能发送到单例模式js文件。 How can I get it to send to the routes file instead?
我如何才能将其发送到路由文件? If I'm going about this the wrong way could somebody please provide an exapmle of how to communicate between a route and a public js file?
如果我使用的是错误的方式,请问有人可以提供路线与公共js文件之间如何通信的示例吗?
As far as I can tell, there's nothing wrong with your singleton setup. 据我所知,您的单例设置没有任何问题。
However , every place where you're going to be listening for events, you have to wrap it in io.on('connection', ...)
. 但是 ,在要监听事件的每个地方,都必须将其包装在
io.on('connection', ...)
。 Making it a singleton doesn't prevent this from being a requirement. 将其设置为单例并不能阻止此要求。
Edit: I may be wrong here, I've just noticed that exports.initialize
isn't actually returning connections
. 编辑:我可能在这里错了,我刚刚注意到
exports.initialize
实际上并没有返回connections
。 Tried that? 试过了吗?
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