如何在socket.io nodejs服务器上列出房间

Question

在关于 如何创建 socket.io 多播组 的问题取得进展后，我发现制作房间是完成我需要的事情的好方法。

但是，如果没有额外的数据结构，了解所有房间会很棒。

是否可以从服务器套接字获取服务器上所有房间的列表？

原文由 pyramation 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

简短的回答：

 io.sockets.adapter.rooms

我分析 io ：

我得到以下输出：

 { server:
   { stack:
      [ [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object] ],
     connections: 3,
     allowHalfOpen: true,
     watcher: { host: [Circular], callback: [Function] },
     _events:
      { request: [Function],
        connection: [Function: connectionListener],
        listening: [Object],
        upgrade: [Object] },
     httpAllowHalfOpen: false,
     cache: {},
     settings: { home: '/', env: 'development', hints: true },
     redirects: {},
     isCallbacks: {},
     _locals: { settings: [Object], app: [Circular] },
     dynamicViewHelpers: {},
     errorHandlers: [],
     route: '/',
     routes:
      { app: [Circular],
        routes: [Object],
        params: {},
        _params: [],
        middleware: [Function] },
     router: [Getter],
     __usedRouter: true,
     type: 'tcp4',
     fd: 7 },
  namespaces:
   { '':
      { manager: [Circular],
        name: '',
        sockets: [Object],
        auth: false,
        flags: [Object],
        _events: [Object] } },
  sockets:
   { manager: [Circular],
     name: '',
     sockets: { '210837319844898486': [Object] },
     auth: false,
     flags: { endpoint: '', exceptions: [] },
     _events: { connection: [Function] } },
  settings:
   { origins: '*:*',
     log: true,
     store:
      { options: undefined,
        clients: [Object],
        manager: [Circular] },
     logger: { colors: true, level: 1 },
     heartbeats: true,
     resource: '/socket.io',
     transports:
      [ 'websocket',
        'htmlfile',
        'xhr-polling',
        'jsonp-polling' ],
     authorization: [Function],
     'log level': 1,
     'close timeout': 25,
     'heartbeat timeout': 15,
     'heartbeat interval': 20,
     'polling duration': 20,
     'flash policy server': true,
     'flash policy port': 843,
     'destroy upgrade': true,
     'browser client': true,
     'browser client minification': false,
     'browser client etag': false,
     'browser client handler': false,
     'client store expiration': 15 },
  handshaken:
   { '210837319844898486':
      { headers: [Object],
        address: [Object],
        time: 'Mon Jul 18 2011 00:53:27 GMT+0200 (CEST)',
        xdomain: false,
        secure: undefined,
        PHPSESSID: '7qo6cht3q0rskhfes4eesb2d05' } },
  connected: { '210837319844898486': true },
  open: { '210837319844898486': true },
  closed: {},
  closedA: [],
  rooms:
   { '': [ '210837319844898486' ],
     '/public-alfred': [ '210837319844898486' ] },
  roomClients: { '210837319844898486': [ '': true, '/public-alfred': true ] },
  oldListeners: [ [Function] ],
  _events:
   { 'set:origins': [Function],
     'set:flash policy port': [Function],
     'set:transports': [Function] } }

从单个客户 io.sockets.adapter.rooms 加入房间“public-alfred”后，包含：

  { '': [ '210837319844898486' ],
         '/public-alfred': [ '210837319844898486' ] }

原文由 Alfred 发布，翻译遵循 CC BY-SA 3.0 许可协议

Answer 2

正如大家所说，在新版本的 socket.io (1.x) 中，可以在以下位置找到房间：

     io.sockets.adapter.rooms

这将返回如下内容：

 {
    'qNADgg3CCxESDLm5AAAA': [ 'qNADgg3CCxESDLm5AAAA': true ],
    'myRoom': [ 'qNADgg3CCxESDLm5AAAA': true,
                '0rCX3v4pufWvQ6uwAAAB': true,
                'iH0wJHGh-qKPRd2RAAAC': true ],
    '0rCX3v4pufWvQ6uwAAAB': [ '0rCX3v4pufWvQ6uwAAAB': true ],
    'iH0wJHGh-qKPRd2RAAAC': [ 'iH0wJHGh-qKPRd2RAAAC': true ]
}

我唯一想得到的房间是“myRoom”，所以我为此编写了以下函数：

 function findRooms() {
    var availableRooms = [];
    var rooms = io.sockets.adapter.rooms;
    if (rooms) {
        for (var room in rooms) {
            if (!rooms[room].hasOwnProperty(room)) {
                availableRooms.push(room);
            }
        }
    }
    return availableRooms;
}

这让我有点困惑，希望这对您有所帮助！

原文由 gastonmancini 发布，翻译遵循 CC BY-SA 3.0 许可协议