# File lib/mongo/protocol/compressed.rb, line 55
      def initialize(message, compressor, zlib_compression_level = nil)
        @original_message = message
        @original_op_code = message.op_code
        @uncompressed_size = 0
        @compressor_id = COMPRESSOR_ID_MAP[compressor]
        @compressed_message = ''
        @zlib_compression_level = zlib_compression_level if zlib_compression_level && zlib_compression_level != -1
        @request_id = message.request_id
      end