Extensible XDR Discriminated Union Primitive Type
draft-keiser-afs3-xdr-union-05
| Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Expired".
Expired & archived
|
|
|---|---|---|---|
| Author | Thomas Keiser | ||
| Last updated | 2012-08-06 (Latest revision 2012-02-03) | ||
| RFC stream | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | Expired | |
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
AFS-3 relies upon XDR to carry Rx RPC call payloads. XDR discriminated unions are ill-suited to cases where the protocol needs to evolve without inventing new RPCs, i.e., unknown discriminant values cause the entire XDR payload to fail the decoding step. While this can be circumvented through the use of opaque payloads (and recursive XDR invocations), such solutions are inelegant and difficult to implement. This memo defines a new XDR primitive type, "ext-union", which is derived from the XDR discriminated union primitive type, but with two key variations: 1) each leg contains a length field, and 2) no default leg is supported.
Authors
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)