Presence

Detect when users enter/leave your app and whether machines are online

What it Does

  • Show who is online and when they leave
  • Trigger events based on audience size
  • Detect machine connections
  • Critical for chat rooms, game lobbies and machine-to-machine

Features

  • Occupancy to monitor user and machine presence in real-time
  • Join/Leave Notification for immediate updates of all client connections
  • Global Scale with synchronized servers across the PubNub Real-Time Network
  • Alexa Robertson
    Offline Online
  • Michael Jonathan
    Offline Online
  • Machine 1
    Offline Online
  • Machine 2
    Offline Online

Resources

Get the Code
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  2. // Get List of Occupants and Occupancy Count.
  3.  
  4. pubnub.here_now({
  5. channel : 'my_channel',
  6. callback : function(m){console.log(m)}
  7. });
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  2. // Get List of Occupants and Occupancy Count.
  3.  
  4. pubnub.HereNow<string>(channel="mychannel",
  5. DisplayReturnMessage, DisplayErrorMessage);
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  2. // Get List of Occupants and Occupancy Count.
  3.  
  4. pubnub.hereNow(channel, new Callback() {
  5. public void successCallback(String channel,
  6. Object message) {
  7. notifyUser(message.toString());
  8. }
  9. public void errorCallback(String channel,
  10. Object message) {
  11. notifyUser(channel + " : " +
  12. message.toString());
  13. }
  14. });
Watch the Video
Read the Case Study
View the Tutorial
Get the Product Guide