Question

我正试图让人看到＆＃39;我的socket.io聊天功能。为此，我需要知道接收器客户端在哪个房间。我怎么能这样做？例如，如果用户向组发送消息我想要检查所有用户当前在该组中的房间，然后说明他们是否在这个房间内。

Answer 1

The way I do this, is by maintaining a list of connected sockets on the server, add them as they connect (but check for duplicates). You can see what rooms a socket is part of by using socket.rooms. A user can be part of multiple rooms also, so iirc, socket.rooms is an array or collection of some variety.

Using the below code, you can get a list of users that share a room with the requesting socket.

var connected_sockets = [];

io.on("connection",function(socket){
    socket.on("request", function(msg){
        var socket = get_user_connection(socket.id);
        if(socket == null){
            connected_sockets.push(socket); //add if not already
        }
        var users_in_same_room = [];
        for(var x = 0; x < socket.rooms.length; x++){
            for(var y = 0 ; y < connected_sockets.length; y++){
                if(connected_sockets[y].id == socket.id) continue;
                if(is_user_in_room(connected_sockets[y],socket.rooms[x])){
                    //they share a room
                    users_in_same_room.push(connected_sockets[y]);
                } else {
                    //they do not share a room
                }
            }
        }
    }
});

var get_user_connection = function(socket_id){
    for(var x = 0 ; x < connected_sockets; x++){
        if(connected_sockets[x].id == socket_id){
            return connected_sockets[x];
        }
    }
    return null;
}

var is_user_in_room = function(socket,room_name){
    for(var x = 0 ; x < connected_sockets[x].rooms.length; x++){
        if(connected_sockets[x].rooms[y] == room_name){
            return true;
        }
    }
    return false;
}

Something like the above. I'm sure you could optimize it, but that's the jist of things.

检查指定客户端套接字的空间

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