I can't get a Pubnub presence timeout to reliably use the heartbeat value - what am I missing? - pubnub

Question

We have a variety of pubnub clients: javascript, ruby, actionscript
Its important that I know if/when clients leave a channel; even if a browser or desktop application (Native Air app) crashes. I'm updating the ActionScript library to support presence, so I cribbed from the JavaScript and Ruby implementations, I have presence working when everything is behaving nicely, but heartbeat doesn't appear to work in detecting clients that crash in my version.
So, I tried the following in Ruby using irb (gem version 3.6.7):
require 'pubnub'
pn = Pubnub.new(:subscribe_key => 'my_sub_key', :uuid => 'my_uuid', :heartbeat => 30)
pn.subscribe(:channel => 'my_channel') { |d| d.msg }
Then I entered the subscribe_key and channel into the Pubnub console. As expected, my subscription was there.
I exited out of irb and waited. I expected to see a presence timeout at about the 30 second mark, but needed to have to wait the entire 6 minutes before I received the timeout.
Note also: things do appear to work with the Javascript client.
Do I need to turn something else on beyond 'presence' to get this to work as expected, or am I misunderstanding what heartbeat does?

Answer 1

After looking at the difference between what Javascript sets up and Ruby 3.6.7 I noticed that the Ruby heartbeat posts were not passing the heartbeat as a parameter.
When I added the heartbeat parameter to my ActionScript version, it began working as it should.
I'm still puzzled as to why the Ruby gem works for others though.

Answer 2

I just did the same test, using our web console at http://www.pubnub.com/console/?channel=my_channel&origin=pubsub.pubnub.com&sub=demo-36&pub=demo-36 (using the demo keys)
I ran your above code, then CTRL-D out of IRB.
And it works as expected, 30s after:
Fri Oct 31 2014 15:35:38:597 : <my_channel
{"action":"timeout","timestamp":1414794938,"uuid":"my_uuid","occupancy":1}
Fri Oct 31 2014 15:35:08:527 : <my_channel>
{"action":"join","timestamp":1414794908,"uuid":"my_uuid","occupancy":2}
Which version of the gem are you on? I just tested with 3.6.7 from RubyGems.
geremy