Independent Submission K. Meadors, Ed.
Request for Comments: 6017 Drummond Group Inc.
Category: Informational September 2010
Electronic Data Interchange - Internet Integration (EDIINT)
Features Header Field
With the maturity of the Electronic Data Interchange - Internet
Integration (EDIINT) standards of AS1, AS2, and AS3, applications and
additional features are being built upon the basic secure transport
functionality. These features are not necessarily supported by all
EDIINT applications and could cause potential problems with
implementations. The EDIINT-Features header field provides a means
to resolve these problems and support new functionality.
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
Copyright (c) 2010 IETF Trust and the persons identified as the
document authors. All rights reserved.
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Meadors Informational [Page 1]
RFC 6017 September 2010
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 2
2. EDIINT-Features Header Syntax . . . . . . . . . . . . . . . . . 2
3. Implementation and Processing . . . . . . . . . . . . . . . . . 3
4. EDIINT Applications . . . . . . . . . . . . . . . . . . . . . . 3
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 3
6. Security Considerations . . . . . . . . . . . . . . . . . . . . 4
7. Normative References . . . . . . . . . . . . . . . . . . . . . 4
EDIINT applications provide for a secure means of payload document
transport. The original intent was for transport of a single EDI or
XML document. However, as AS1 [RFC3335], AS2 [RFC4130], and AS3
[RFC4823] matured, other features and application logic were
implemented upon EDIINT standards. Since these features go beyond
(but do not violate) the basic premise of EDIINT, a means is needed
to communicate to trading partners features that are supported by the
originating user agent. The EDIINT-Features header indicates the
capability of the user agent to support the listed feature with its
trading partner without out-of-band communication and agreement.
1.1. Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
2. EDIINT-Features Header Syntax
The EDIINT-Features header can appear in the header section of an
AS1, AS2, and AS3 message. Its ABNF [RFC5234] syntax is listed
Feature = "EDIINT-Features:" [WSP] Feature-Name *([WSP] ","
Feature-Name = 1*Feature-Token
Feature-Token = %d48-57 / ; 0-9
%d65-90 / ; A-Z
%d97-122 / ; a-z
"-" ; hyphen is allowed
; blank space " " is not allowed
Meadors Informational [Page 2]
RFC 6017 September 2010
The Feature-Token allows for feature names to be specified and can
only contain alphanumeric characters along with the hyphen. Feature
names are case insensitive.
3. Implementation and Processing
The EDIINT-Features header field indicates the originating user agent
is capable of supporting the features listed. The EDIINT-Features
header field MUST be present in all messages transmitted by the user
agent and not just messages that utilize the feature. Upon
examination of the EDIINT-Features header field, the trading partner
SHOULD assume the user agent is capable of receiving messages
utilizing any of the features listed.
Features that utilize the EDIINT-Features header field MUST be
specified in RFCs. These RFCs MUST describe the feature name that is
listed in the header and the means by which it should be used.
4. EDIINT Applications
AS2 and AS3 applications currently use a version header, AS2-Version
and AS3-Version, respectively, to indicate functional support. The
EDIINT-Features header field tremendously improves the purpose and
function of the old version header. However, to provide a connection
from the old version header and the EDIINT-Features header field, AS2
and AS3 applications that implement the EDIINT-Features header field
MUST use the version value of "1.2" to indicate the support of the
EDIINT-Features header field. Also, since version "1.1" indicates
the implementation supports compression [RFC5402] and "1.2" builds
upon "1.1", AS2-Version or AS3-Version of "1.2" MUST support
compression regardless of whether it is mentioned as a feature in the
EDIINT-Features header field.
AS1 does not use a version header and one is not required for
including the EDIINT-Features header field.
The EDIINT-Features header field is informational, and AS1, AS2, or
AS3 trading partners who have not implemented it can safely ignore
5. IANA Considerations
IANA has registered the following provisional header.
Header field name: EDIINT-Features
Applicable protocol: http and mail
Meadors Informational [Page 3]
RFC 6017 September 2010
Author/Change controller: Kyle Meadors of Drummond Group
Specification document(s): this document
Related information: This header will be used in conjunction with the
EDIINT WG specifications RFC 4130 (AS2), RFC 3335 (AS1) and RFC 4823
6. Security Considerations
Because headers are often un-encrypted, it may be possible for the
EDIINT-Features header field to be altered. Trading partners MAY
consult out-of-band to confirm feature support.
7. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC3335] Harding, T., Drummond, R., and C. Shih, "MIME-based Secure
Peer-to-Peer Business Data Interchange over the Internet",
RFC 3335, September 2002.
[RFC4130] Moberg, D. and R. Drummond, "MIME-Based Secure Peer-to-
Peer Business Data Interchange Using HTTP, Applicability
Statement 2 (AS2)", RFC 4130, July 2005.
[RFC4823] Harding, T. and R. Scott, "FTP Transport for Secure Peer-
to-Peer Business Data Interchange over the Internet", RFC
4823, April 2007.
[RFC5234] Crocker, D. and P. Overell, "Augmented BNF for Syntax
Specifications: ABNF", STD 68, RFC 5234, January 2008.
[RFC5402] Harding, T., Ed., "Compressed Data within an Internet
Electronic Data Interchange (EDI) Message", RFC 5402,
Meadors Informational [Page 4]
RFC 6017 September 2010
Kyle Meadors (editor)
Drummond Group Inc.
Nashville, Tennessee 37221
Phone: +1 (817) 709-1627
Meadors Informational [Page 5]
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