访问socket.on（'connection'）闭包之外的套接字

Below is part of app.js, it has socket connection with client

下面是app.js的一部分，它与客户端有套接字连接

io.sockets.on('connection', function (soc) {
    soc.emit('news', { status: 'connected' });
});

What I want to do is access the soc var outside the connection closure, like this

我想要做的是访问连接闭包之外的soc var，就像这样

io.sockets.on('connection', function (soc) {
        do something magical here so I can access soc from outside
});
soc.emit('news', { status: 'connected' });

What additional technique need to add in to archive this structure?

需要添加哪些其他技术来存档此结构？

2 个解决方案

#1

you need to reference your socket io variable in your server code:

您需要在服务器代码中引用socket io变量：

io.sockets.emit('news', { status: 'connected' });

io.sockets.emit（'news'，{status：'connected'}）;

so in your sample code, it could look something like this:

所以在你的示例代码中，它看起来像这样：

io.sockets.on('connection', function (soc) {
    emit();
});

function emit(){
    io.sockets.emit('news', { status: 'connected' });
}

#2

Maybe you could try something like this:

也许你可以尝试这样的事情：

var foo;

io.on('connection', function(soc){
    foo = new Foo(soc);
});

function Foo (socket){
    this.emit = function () {
        if(socket)
        {
            socket.emit('msg');
        }
    }
}

After somebody is connected you can call foo.emit();

有人连接后你可以调用foo.emit（）;

This answer might help you: Can't emit from method defined outside of socket connection

这个答案可能对您有所帮助：无法从套接字连接外定义的方法发出

#1