Question

如何使用socket.io 2.0检索房间中所有已连接的客户端

我已经在类似的问题中尝试了解决方案：https://stackoverflow.com/a/45160538/2189845

var sockets = io.in("room_name")
 Object.keys(sockets.sockets).forEach((item) => {
 console.log("TODO: Item:", sockets.sockets[item].id)            
})

但无论房间如何，这都会遍历所有套接字连接。所以上面的代码给出了相同的结果：

Object.keys(io.sockets.sockets).forEach((item) => {
    console.log("general socket: Item:", item);
});

Answer 1

不幸的是，这个答案并不能完全满足OP的问题。如果您使用socket.io-redis来管理套接字连接，则可以获得连接的客户端，例如

io.of('/').adapter.clients((err, clients) => {
  console.log(clients); // an array containing all connected socket ids
});

io.of('/').adapter.clients(['room1', 'room2'], (err, clients) => {
  console.log(clients); // an array containing socket ids in 'room1' and/or 'room2'
});

// you can also use

io.in('room3').clients((err, clients) => {
  console.log(clients); // an array containing socket ids in 'room3'
});

来自：https://github.com/socketio/socket.io-redis#redisadapterclientsroomsarray-fnfunction

Answer 2

尝试：

io.sockets.clients('room_name').forEach(function(item) {
    console.log(item.id);//any property of socket you want to print
});

或者你可以试试：

var clients = io.sockets.adapter.rooms['room_name'].sockets;
for (var clientId in clients ) {

     //this is the socket of each client in the room.
     var SocketofClient = io.sockets.connected[clientId];
     console.log(SocketofClient.id);
}

Answer 3

检查在socket.io 2.0中运行的此代码

  io.sockets.in(roomID).clients(function(err, clients) {
                            clients.forEach(client => {
                                let user = io.sockets.connected[client];
                                console.log("Connected Client ", user.displayName);
                            });
                        });

socket.io 2.0在一个房间里连接客户端

3 个答案: