# 12.13 `xdrlib` -- Encode and decode XDR data.

The `xdrlib` module supports the External Data Representation Standard as described in RFC 1014, written by Sun Microsystems, Inc. June 1987. It supports most of the data types described in the RFC.

The `xdrlib` module defines two classes, one for packing variables into XDR representation, and another for unpacking from XDR representation. There are also two exception classes.

`Packer` ()
  `Packer` is the class for packing data into XDR representation. The `Packer` class is instantiated with no arguments.

`Unpacker` (data)
  `Unpacker` is the complementary class which unpacks XDR data values from a string buffer. The input buffer is given as data.

- 12.13.1 Packer Objects
- 12.13.2 Unpacker Objects
- 12.13.3 Exceptions