An example of creating a download with the github v3 api

github_create_download.rb

require 'rubygems'
require "net/https"
require "uri"
require "json"

login = ENV['BF_GITHUB_USER']
pass  = ENV['BF_GITHUB_PASS']
repos = ENV['BF_GITHUB_REPO']

file_to_upload     = 'http/git.ref'
file_download_name = file_to_download.split("/")[-1]

uri              = URI.parse("https://api.github.com")
http             = Net::HTTP.new(uri.host, uri.port)
http.use_ssl     = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE

payload = {
  "size"         => File.stat(file_to_upload).size,
  "content_type" => `file -Ib #{file_to_upload}`.gsub(/\n/,"").split(";")[0],
  "name"         => file_download_name,
}.to_json

request           = Net::HTTP::Post.new("/repos/#{repos}/downloads", initheader = {'Content-Type' =>'application/json'})
request.basic_auth(login, pass)
request.body      = payload
http              = Net::HTTP.new(uri.host, 443)
http.use_ssl      = true
http.verify_mode  = OpenSSL::SSL::VERIFY_NONE
response          = http.start{|http| http.request(request)}

if response.code == "201"
  json = JSON.parse(response.body)
  `curl \
  -F "key=#{json['path']}" \
  -F "acl=#{json['acl']}" \
  -F "success_action_status=201" \
  -F "Filename=#{json['name']}" \
  -F "AWSAccessKeyId=#{json['accesskeyid']}" \
  -F "Policy=#{json['policy']}" \
  -F "Signature=#{json['signature']}" \
  -F "Content-Type=#{json['content_type']}" \
  -F "file=@#{file_to_upload}" \
  #{json["s3_url"]}`
else
  raise "File upload was unsuccessful\n#{response.body}"
end