Discovery Mechanism for QUIC-based, Non-transparent Proxy Services
draft-kuehlewind-quic-proxy-discovery-00

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Last updated 2019-11-04
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Network Working Group                                      M. Kuehlewind
Internet-Draft                                                 Z. Sarker
Intended status: Informational                                  Ericsson
Expires: May 7, 2020                                   November 04, 2019

   Discovery Mechanism for QUIC-based, Non-transparent Proxy Services
                draft-kuehlewind-quic-proxy-discovery-00

Abstract

   Often an intermediate instance (such as a proxy server) is used to
   connect to a web server or a communicating peer if a direct end-to-
   end IP connectivity is not possible or the proxy can provide a
   support service like, e.g., address anonymisation.  To use a non-
   transparent proxy a client explicitly connects to it and requests
   forwarding to the final target server.  The client either knows the
   proxy address as preconfigured in the application or can dynamically
   learn about available proxy services.  This document describes
   different discovery mechanisms for non-transparent proxies that are
   either located in the local network, e.g. home or enterprise network,
   in the access network, or somewhere else on the Internet usually
   close to the target server or even in the same network as the target
   server.

   This document assumes that the non-transparent proxy server is
   connected via QUIC and discusses potential discovery mechanisms for
   such a QUIC-based, non-transparent proxy.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on May 7, 2020.

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Copyright Notice

   Copyright (c) 2019 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Using DHCP for Local Discovery  . . . . . . . . . . . . . . .   3
   3.  Using IPv6 Neighbor Discovery for Local Discovery . . . . . .   5
     3.1.  Using PVDs  . . . . . . . . . . . . . . . . . . . . . . .   6
   4.  DNS Service Discovery (DNS-SD)  . . . . . . . . . . . . . . .   7
     4.1.  Local discovery using mDNS  . . . . . . . . . . . . . . .   7
     4.2.  Discovery for Remote Domains  . . . . . . . . . . . . . .   8
   5.  Using PCP options . . . . . . . . . . . . . . . . . . . . . .   8
   6.  Using Anycast address . . . . . . . . . . . . . . . . . . . .   9
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   8.  Security Consideration  . . . . . . . . . . . . . . . . . . .  10
   9.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  10
   10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  10
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  10
     11.2.  Informative References . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   QUIC is a new transport protocol that was initially developed as a
   way to optimize HTTP traffic by supporting multiplexing without head-
   of-line-blocking and integrating security directly into the
   transport.  This tight integration of security allows the transport
   and security handshakes to be combined into a single round-trip
   exchange, after which both the transport connection and authenticated
   encryption keys are ready.

   Often an intermediate instance (such as a proxy server) is used to
   connect to a web server or a communicating peer if a direct end-to-
   end IP connectivity is not possible or the proxy can provide a

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