[Resolved] Connection Refused

Greetings,

I was wondering if anyone could give some information about the current rate limits. I currently have an application running on Heroku, and I'm getting the following error when I try to make a request to the realm status API:

Errno::ECONNREFUSED: Connection refused - connect(2)

Using the same code from my personal computer results in no error; it's only from Heroku's server that this error occurs. I am assuming that I'm hitting some sort of limit for that IP? Here is the minimal example (in Ruby):

>> api = 'http://us.battle.net/api/wow/realm/status'
=> "http://us.battle.net/api/wow/realm/status"
>> uri = URI.parse api
=> #<URI::HTTP:0x2b7d0996a030 URL:http://us.battle.net/api/wow/realm/status>
>> json = Net::HTTP.get uri
Errno::ECONNREFUSED: Connection refused - connect(2)
/usr/ruby1.8.7/lib/ruby/1.8/net/http.rb:560:in `initialize'
/usr/ruby1.8.7/lib/ruby/1.8/net/http.rb:560:in `open'
/usr/ruby1.8.7/lib/ruby/1.8/net/http.rb:560:in `connect'
/usr/ruby1.8.7/lib/ruby/1.8/timeout.rb:53:in `timeout'

Am I on the right track here, or is there something else going on?

Thanks in advance!

[Edit] Restarting the app (and thus launching it on a new IP) seems to have fixed the issue. It seems odd that I would hit a rate limit, as (1) the data is cached in memcache for 5 minutes before it tries to download again, and (2) if the app is idle for a while (half an hour or so?), Heroku spins down the instance and it comes up again on a new IP the next time it's accessed. So, I'm definitely interested in any thoughts or info. Thanks again!