cf not working with proxy

[amol28kulkarni]

E:\Ruby200\bin>cf target --http_proxy=amol_kulkarni:xxx@xxx.xxx.xx.xx:8080 http://api.run.pivotal.io
--debug
DL is deprecated, please use Fiddle
api.run.pivotal.io
Errno::ETIMEDOUT: A connection attempt failed because the connected party did not properly respond after a period of time, or
established connection failed because connected host has failed to respond. - connect(2)
cat ~/.cf/crash # for more details
E:/Ruby200/lib/ruby/gems/2.0.0/gems/cf-5.2.0/lib/cf/cli.rb:325:in initialize': A connection attempt failed because the conne cted party did not properly respond after a period of time, or established connection failed because connected host has faile d to respond. - connect(2) (Errno::ETIMEDOUT) from E:/Ruby200/lib/ruby/gems/2.0.0/gems/cf-5.2.0/lib/cf/cli.rb:325:innew'
from E:/Ruby200/lib/ruby/gems/2.0.0/gems/cf-5.2.0/lib/cf/cli.rb:325:in sane_target_url' from E:/Ruby200/lib/ruby/gems/2.0.0/gems/cf-5.2.0/lib/cf/cli.rb:346:inclient_target'
from E:/Ruby200/lib/ruby/gems/2.0.0/gems/cf-5.2.0/lib/cf/cli.rb:414:in client' from E:/Ruby200/lib/ruby/gems/2.0.0/gems/cf-5.2.0/lib/cf/cli.rb:194:insave_token_if_it_changes'
from E:/Ruby200/lib/ruby/gems/2.0.0/gems/cf-5.2.0/lib/cf/cli.rb:186:in block in execute' from E:/Ruby200/lib/ruby/gems/2.0.0/gems/cf-5.2.0/lib/cf/cli.rb:122:inwrap_errors'
from E:/Ruby200/lib/ruby/gems/2.0.0/gems/cf-5.2.0/lib/cf/cli.rb:182:in execute' from E:/Ruby200/lib/ruby/gems/2.0.0/gems/mothership-0.5.1/lib/mothership.rb:45:instart'
from E:/Ruby200/lib/ruby/gems/2.0.0/gems/cf-5.2.0/bin/cf:16:in <top (required)>' from E:/Ruby200/bin/cf:23:inload'
from E:/Ruby200/bin/cf:23:in `

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E:\Ruby200\bin>