geopet/1_9_3_result.md

## 1_9_3_result.md

      
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    Ruby MRI 1.9.3 Results

[gpetrie] $ ruby -v
ruby 1.9.3p429 (2013-05-15 revision 40747) [x86_64-darwin11.4.2]

[gpetrie] $ ruby wunderground.rb
Current temperature in Cedar Rapids is: 77.0

  
## 2_0_0_result.md

      
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    Ruby MRI 2.0.0 Results

This is a direct paste from a clean Vagrant Precise32 VM build using RVM as the Ruby version manager.
vagrant@precise32:~$ ruby -v
ruby 2.0.0p195 (2013-05-14 revision 40734) [i686-linux]
vagrant@precise32:~$ ruby /vagrant/wunderground.rb
/home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http/response.rb:357:in `finish': incorrect header check (Zlib::DataError)
  from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http/response.rb:357:in `finish'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http/response.rb:262:in `ensure in inflater'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http/response.rb:262:in `inflater'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http/response.rb:274:in `read_body_0'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http/response.rb:201:in `read_body'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/open-uri.rb:328:in `block (2 levels) in open_http'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http.rb:1413:in `block (2 levels) in transport_request'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http/response.rb:162:in `reading_body'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http.rb:1412:in `block in transport_request'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http.rb:1403:in `catch'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http.rb:1403:in `transport_request'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http.rb:1376:in `request'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/open-uri.rb:319:in `block in open_http'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/net/http.rb:852:in `start'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/open-uri.rb:313:in `open_http'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/open-uri.rb:708:in `buffer_open'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/open-uri.rb:210:in `block in open_loop'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/open-uri.rb:208:in `catch'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/open-uri.rb:208:in `open_loop'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/open-uri.rb:149:in `open_uri'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/open-uri.rb:688:in `open'
	from /home/vagrant/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/open-uri.rb:34:in `open'
	from /vagrant/wunderground.rb:3:in `<main>'

  
## README.md

      
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    README

The Issue

This api call to the Weather Underground service works as expected using MRI ruby-1.9.3-p429 but not when using MRI ruby-2.0.0-p195.
This gist shows the code and the response when using 1.9.3 and 2.0.0.
The code sample is taken directly from the Weather Underground's documentation
Update
After working with @zph and @injekt there have been some interesting findings. I am including wunderground-working-2_0.rb as an example of a working version of the Weather Underground API using Ruby MRI 2.0.0.
The interesting piece was when @injekt showed that the rest-client gem could call the api without error. He then found that the gem was manually rescuing the Zlib::DataError (https://github.com/rest-client/rest-client/blob/master/lib/restclient/request.rb#L258).
So, for now, if I want to use the Weather Underground API and MRI 2.0.0, I'll be doing it with the rest-client gem.
Additionally interesting reading can be found with this Ruby core commit, where a significant update was made to the Zlib libraries.

  
## wunderground-working-2_0.rb
require 'rest-client'
require 'json'

api_key = '' # required by producing your own API key from http://www.wunderground.com/weather/api/
url = "http://api.wunderground.com/api/#{api_key}/geolookup/conditions/q/IA/Cedar_Rapids.json"

res = RestClient.get url
parsed_json = JSON.parse(res)
location = parsed_json['location']['city']
temp_f = parsed_json['current_observation']['temp_f']
print "Current temperature in #{location} is: #{temp_f}\n"

## wunderground.rb
require 'open-uri'
require 'json'

api_key = '' # required by producing your own API key from http://www.wunderground.com/weather/api/

open("http://api.wunderground.com/api/#{api_key}/geolookup/conditions/q/IA/Cedar_Rapids.json") do |f|
  json_string = f.read
  parsed_json = JSON.parse(json_string)
  location = parsed_json['location']['city']
  temp_f = parsed_json['current_observation']['temp_f']
  print "Current temperature in #{location} is: #{temp_f}\n"
end
	require 'rest-client'
	require 'json'

	api_key = '' # required by producing your own API key from http://www.wunderground.com/weather/api/
	url = "http://api.wunderground.com/api/#{api_key}/geolookup/conditions/q/IA/Cedar_Rapids.json"

	res = RestClient.get url
	parsed_json = JSON.parse(res)
	location = parsed_json['location']['city']
	temp_f = parsed_json['current_observation']['temp_f']
	print "Current temperature in #{location} is: #{temp_f}\n"
	require 'open-uri'
	require 'json'

	api_key = '' # required by producing your own API key from http://www.wunderground.com/weather/api/

	open("http://api.wunderground.com/api/#{api_key}/geolookup/conditions/q/IA/Cedar_Rapids.json") do \|f\|
	json_string = f.read
	parsed_json = JSON.parse(json_string)
	location = parsed_json['location']['city']
	temp_f = parsed_json['current_observation']['temp_f']
	print "Current temperature in #{location} is: #{temp_f}\n"
	end