ruby_net_http_array_support.rb

# Using custom set_form_data and urlencode
# Ruby NET/HTTP does not support duplicate parameter names
# File net/http.rb, line 1426
def set_form_data(request, params, sep = '&')
  request.body = params.map {|k,v| 
    if v.instance_of?(Array)
      v.map {|e| "#{urlencode(k.to_s)}=#{urlencode(e.to_s)}"}.join(sep)
    else
      "#{urlencode(k.to_s)}=#{urlencode(v.to_s)}"
    end
  }.join(sep)
  request.content_type = 'application/x-www-form-urlencoded'
end

def urlencode(str)
  str.gsub(/[^a-zA-Z0-9_\.\-]/n) {|s| sprintf('%%%02x', s[0]) }
end