Faraday::Response::Gzip middleware

gzip.rb

require 'faraday'
require 'zlib'

module Faraday
  class Response::Gzip < Response::Middleware
    def on_complete(env)
      encoding = env[:response_headers]['content-encoding'].to_s.downcase
      case encoding
        when 'gzip'
          env[:body] = Zlib::GzipReader.new(StringIO.new(env[:body]), encoding: 'ASCII-8BIT').read
          env[:response_headers].delete('content-encoding')
        when 'deflate'
          env[:body] = Zlib::Inflate.inflate(env[:body])
          env[:response_headers].delete('content-encoding')
      end
    end
  end
end

Faraday::Response.register_middleware :gzip => Faraday::Response::Gzip