javascript Socket.io - 在 node.js 中的单独文件中监听事件
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Socket.io - listen events in separate files in node.js
提问by Santos
For example my idea is:
例如我的想法是：
File1.js
文件1.js
io.sockets.on('connection', function (socket) {
socket.on('file1Event', function () {
//logic
});
});
File2.js
文件2.js
io.sockets.on('connection', function (socket) {
socket.on('file2Event', function () {
//logic
});
});
This code it's for a node server, I will have problems it this code?
此代码用于节点服务器，此代码有问题吗？
回答by eDwaRd
Nope, just use the same "io" object.
不，只需使用相同的“io”对象。
File1.js
文件1.js
exports = module.exports = function(io){
io.sockets.on('connection', function (socket) {
socket.on('file1Event', function () {
console.log('file1Event triggered');
});
});
}
File2.js
文件2.js
exports = module.exports = function(io){
io.sockets.on('connection', function (socket) {
socket.on('file2Event', function () {
console.log('file2Event triggered');
});
});
}
app.js
应用程序.js
var app = require('http').createServer(handler)
, io = require('socket.io').listen(app)
, fs = require('fs')
, file1 = require('./File1')(io)
, file2 = require('./File2')(io)
app.listen(3000);
function handler (req, res) {
fs.readFile(__dirname + '/index.html',
function (err, data) {
if (err) {
res.writeHead(500);
return res.end('Error loading index.html');
}
res.writeHead(200);
res.end(data);
});
}
index.html
索引.html
<script src="/socket.io/socket.io.js"></script>
<script>
var socket = io.connect('http://localhost');
socket.emit('file1Event'); // 'file1Event triggered' will be shown
socket.emit('file2Event'); // 'file2Event triggered' will be shown
</script>
回答by kaligrafy
Be careful not to generate a new connection event for each file. You should use the same on('connection') event, otherwise after 10 files imported, you will get this error from node: MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 connection listeners added. Use emitter.setMaxListeners() to increase limit.
注意不要为每个文件生成一个新的连接事件。您应该使用相同的 on('connection') 事件，否则在导入 10 个文件后，您将从 node: 收到此错误MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 connection listeners added. Use emitter.setMaxListeners() to increase limit。
The better way is to do like this in your main file:
更好的方法是在主文件中这样做：
io.on('connection', function (socket) {
require('pathToSocketRoutesFile1')(socket);
require('pathToSocketRoutesFile2')(socket);
require('pathToSocketRoutesFileN')(socket);
return io;
};
and in each separate file:
并在每个单独的文件中：
module.exports = function(socket) {
socket.on('eventName1', function() {
//...
});
socket.on('eventName2', function() {
//...
});
};
回答by fengelhardt
Another option is to create a rootSocketwhich handles the initial connection and then passes the socket to other handlers.
另一种选择是创建一个rootSocket来处理初始连接，然后将套接字传递给其他处理程序。
const rootSocket = (io) => {
io.sockets.on('connection', (socket) => {
authorization(socket);
chat(socket);
});
};
exports.default = rootSocket;
