Coding for failure (http://tinyurl.com/5gdee9)

gistfile1.rb

begin
  response = Net::HTTP.post_form("...")
rescue Timeout::Error,
       Errno::EINVAL,
       Errno::ECONNRESET,
       EOFError,
       Net::HTTPBadResponse
       Net::HTTPHeaderSyntaxError,
       Net::ProtocolError => e
# ...
end