The "vnc" URI Scheme
RFC 7869

Document Type RFC - Informational (May 2016; No errata)
Last updated 2016-05-25
Stream ISE
Formats plain text pdf html bibtex
IETF conflict review conflict-review-warden-appsawg-vnc-scheme
Stream ISE state Published RFC
Consensus Boilerplate Unknown
Document shepherd Nevil Brownlee
Shepherd write-up Show (last changed 2016-01-21)
IESG IESG state RFC 7869 (Informational)
Telechat date
Responsible AD (None)
Send notices to "Nevil Brownlee" <rfc-ise@rfc-editor.org>
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Independent Submission                                         D. Warden
Request for Comments: 7869                              Dell Products LP
Category: Informational                                      I. Iordanov
ISSN: 2070-1721                                                 Undatech
                                                                May 2016

                          The "vnc" URI Scheme

Abstract

   Virtual Network Computing (VNC) software provides remote desktop
   functionality.  This document describes a Uniform Resource Identifier
   (URI) scheme enabling the launch of VNC clients from other
   applications.  The scheme specifies parameters useful in securely
   connecting clients with remote hosts.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This is a contribution to the RFC Series, independently of any other
   RFC stream.  The RFC Editor has chosen to publish this document at
   its discretion and makes no statement about its value for
   implementation or deployment.  Documents approved for publication by
   the RFC Editor are not a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7869.

Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.

Warden & Iordanov             Informational                     [Page 1]
RFC 7869                  The "vnc" URI Scheme                  May 2016

Table of Contents

   1. Introduction ....................................................3
      1.1. Requirements Language ......................................3
   2. The "vnc" URI Scheme ............................................3
      2.1. URI Scheme Syntax ..........................................3
           2.1.1. URI Parameters ......................................4
           2.1.2. Data Types ..........................................9
      2.2. Processing URIs ...........................................11
           2.2.1. Error Handling .....................................12
           2.2.2. Connection Profile Matching ........................12
      2.3. Connection Channel Types ..................................12
           2.3.1. The "Integrated SSH" Channel Type ..................12
           2.3.2. The "Secure Tunnel" Channel Type ...................14
   3. Security Considerations ........................................15
      3.1. Application Trust .........................................16
      3.2. URI Handling ..............................................16
      3.3. Host Identification .......................................17
      3.4. Connection Database Integrity .............................18
   4. IANA Considerations ............................................18
      4.1. "vnc" Scheme ..............................................18
      4.2. Remote Framebuffer Security Types .........................18
      4.3. VNC URI Group .............................................19
      4.4. VNC URI Connection Channel Types ..........................19
      4.5. VNC URI ID Hash Algorithms ................................19
      4.6. VNC URI Parameters ........................................21
   5. References .....................................................22
      5.1. Normative References ......................................22
      5.2. Informative References ....................................23
   Appendix A. "vnc" URI Template ....................................24
   Acknowledgments ...................................................25
   Authors' Addresses ................................................25

Warden & Iordanov             Informational                     [Page 2]
RFC 7869                  The "vnc" URI Scheme                  May 2016

1.  Introduction

   Virtual Network Computing (VNC) clients are used to support remote
   desktop connectivity based on the Remote Framebuffer (RFB) Protocol
   [RFC6143].  It is often desirable to integrate such functionality
   with other software.  However, the lack of a standard method for
Show full document text