

Internet Engineering Task Force                          M. Sustrik, Ed.
Internet-Draft
Intended status: Informational                                G. D'Amore
Expires: August 7, 2015
                                                        February 3, 2015


              WebSocket Mapping for Scalability Protocols
                        sp-websocket-mapping-01

Abstract

   This document defines the WebSocket mapping for scalability
   protocols.

Status of This Memo

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

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   This Internet-Draft will expire on August 7, 2015.

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   (http://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.


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1.  Underlying protocol

   This mapping should be layered on the top of WebSocket protocol as
   defined in RFC 6455.

2.  Connection initiation

   Standard WebSocket handshake is done following RFC 6455.

   The Sec-WebSocket-Protocol field MUST be set in the client's HTTP
   request to match the protocol used by the WebSocket server.
   Accordingly, the following values should be used.

   pair.sp.nanomsg.org (NN_PAIR client and server)

   req.sp.nanomsg.org (NN_REQ server, NN_REP client)

   rep.sp.nanomsg.org (NN_REP server, NN_REQ client)

   pub.sp.nanomsg.org (NN_PUB server, NN_SUB client)

   sub.sp.nanomsg.org (NN_SUB server, NN_PUB client)

   surveyor.sp.nanomsg.org (NN_SURVEYOR server, NN_RESPONDENT client)

   respondent.sp.nanomsg.org (NN_RESPONDENT server, NN_SURVEYOR client)

   push.sp.nanomsg.org (NN_PUSH server, NN_PULL client)

   pull.sp.nanomsg.org (NN_PULL server, NN_PUSH client)

   bus.sp.nanomsg.org (NN_BUS client and server)

   If the server supports the requested SP protocol as indicated by the
   Sec-WebSocket-Protocol header, then it MUST respond with the same
   Sec-WebSocket-Protocol value sent by the client.

   If the server does support the requested SP protocol, then it MUST
   fail the WebSocket connection using the Close code of 1002, as
   specified in RFC 6455.

   For example, an NN_REQ client socket, connecting to an NN_REP server,
   will send the value rep.sp.nanomsg.org in the Sec-WebSocket-Protocol
   field.  The NN_REP socket on the server would then include the same
   rep.sp.nanomsg.org in its response.


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3.  Message

   SP message maps directly to WebSocket message.  The message can be
   fragmented as needed.  Frame boundaries are ignored by the SP layer.

   When possible, binary frames SHOULD be used in preference to text
   frames.  If text frames are in use, then SP message payloads MUST be
   comprised of legal UTF-8 text only.

4.  IANA Considerations

   This memo includes no request to IANA.

5.  Security Considerations

   The mapping isn't intended to provide any additional security in
   addition to what WebSocket does.  DoS concerns are addressed within
   the specification.

Authors' Addresses

   Martin Sustrik (editor)

   Email: sustrik@250bpm.com


   Garrett D'Amore

   Email: garrett@damore.org


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