Class: ChefZeroHttpProxy

Inherits:
Object
  • Object
show all
Defined in:
lib/chef/provisioning/docker_driver/chef_zero_http_proxy.rb

Instance Method Summary collapse

Constructor Details

#initialize(local_address, local_port, remote_address, remote_port) ⇒ ChefZeroHttpProxy

Returns a new instance of ChefZeroHttpProxy.



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# File 'lib/chef/provisioning/docker_driver/chef_zero_http_proxy.rb', line 6

def initialize(local_address, local_port, remote_address, remote_port)
  @local_address = local_address
  @local_port = local_port
  @remote_address = remote_address
  @remote_port = remote_port
end

Instance Method Details

#handle_request(to_client) ⇒ Object 



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# File 'lib/chef/provisioning/docker_driver/chef_zero_http_proxy.rb', line 31

def handle_request(to_client)
  begin
    request_line = to_client.readline

    verb = request_line[/^\w+/]
    url = request_line[/^\w+\s+(\S+)/, 1]
    version = request_line[/HTTP\/(1\.\d)\s*$/, 1]
    uri = URI::parse url

    # Show what got requested
    Chef::Log.debug("[C->S]: #{verb} ->  #{url}")

    querystr = if uri.query
                 "#{uri.path}?#{uri.query}"
               else
                 uri.path
               end

    to_server = TCPSocket.new(@remote_address, @remote_port)

    to_server.write("#{verb} #{querystr} HTTP/#{version}\r\n")

    content_len = 0

    loop do
      line = to_client.readline

      if line =~ /^Content-Length:\s+(\d+)\s*$/
        content_len = $1.to_i
      end

      # Strip proxy headers
      if line =~ /^proxy/i
        next
      elsif line.strip.empty?
        to_server.write("Connection: close\r\n\r\n")

        if content_len >= 0
          to_server.write(to_client.read(content_len))
          Chef::Log.debug("[C->S]: Wrote #{content_len} bytes")
        end

        break
      else
        to_server.write(line)
      end
    end

    buff = ''
    while to_server.read(8192, buff)
      to_client.write(buff)
    end

  rescue
    Chef::Log.error $!
    raise

  ensure
    # Close the sockets
    to_client.close
    to_server.close
  end
end

#run ⇒ Object 



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# File 'lib/chef/provisioning/docker_driver/chef_zero_http_proxy.rb', line 13

def run
  begin
    Chef::Log.debug("Running proxy main loop on #{@local_address}:#{@local_port}!")

    # Start our server to handle connections (will raise things on errors)
    @socket = TCPServer.new @local_address, @local_port

    # Handle every request in another thread
    loop do
      s = @socket.accept
      Thread.new s, &method(:handle_request)
    end

  ensure
    @socket.close if @socket
  end
end