RFC 6093 · PROPOSED STANDARD · 2011

On the Implementation of the TCP Urgent Mechanism

Overview

RFC 6093, “On the Implementation of the TCP Urgent Mechanism”, is a Proposed Standard document published in January 2011 by F. Gont, A. Yourtchenko. It updates RFC 793, RFC 1011, RFC 1122. It has been obsoleted by RFC 9293 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.

Abstract

This document analyzes how current TCP implementations process TCP urgent indications and how the behavior of some widely deployed middleboxes affects how end systems process urgent indications. This document updates the relevant specifications such that they accommodate current practice in processing TCP urgent indications, raises awareness about the reliability of TCP urgent indications in the Internet, and recommends against the use of urgent indications (but provides advice to applications that do). [STANDARDS-TRACK]

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 6093 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
Obsoleted by
RFC 9293
This RFC updates
RFC 793 RFC 1011 RFC 1122
Other RFCs from 2011

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