Socket.IO-如何获取已连接套接字/客户端的列表? [英] Socket.IO - how do I get a list of connected sockets/clients?

问题描述

我正在尝试获取当前已连接的所有套接字/客户端的列表.

I'm trying to get a list of all the sockets/clients that are currently connected.

io.sockets不返回数组.

我知道我可以使用数组保留自己的列表，但是出于以下两个原因，这并不是最佳解决方案:

I know I could keep my own list using an array, but don't think this is an optimal solution for 2 reasons:

1. 冗余. Socket.IO已经保留了此列表的副本.

1. Redundancy. Socket.IO already keeps a copy of this list.

Socket.IO提供了为客户端设置任意字段值的方法(即:socket.set('nickname', 'superman'))，因此，如果我要维护自己的列表，则需要跟上这些更改.

Socket.IO provides method to set arbitrary field values for clients (i.e: socket.set('nickname', 'superman')) so I'd need to keep up with these changes if I were to maintain my own list.

帮助?

推荐答案

在Socket.IO 0.7中，命名空间上有一个clients方法，该方法返回所有连接的套接字的数组.

In Socket.IO 0.7 you have a clients method on the namespaces, this returns a array of all connected sockets.

没有命名空间的API:

API for no namespace:

var clients = io.sockets.clients();
var clients = io.sockets.clients('room'); // all users from room `room`

对于命名空间

var clients = io.of('/chat').clients();
var clients = io.of('/chat').clients('room'); // all users from room `room`

希望这对以后的人有帮助

Hopes this helps someone in the future

注意::此解决方案仅适用于1.0之前的版本

NOTE: This Solution ONLY works with version prior to 1.0

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更新2020年3月6日

从1.x及更高版本开始，请参阅此链接:

From 1.x and above, please refer to this link: getting how many people are in a chat room in socket.io

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