Requirements for Open Pluggable Edge Services (OPES) Callout Protocols
RFC 3836
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RFC - Informational
(August 2004; No errata)
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2015-10-14
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IETF
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RFC 3836 (Informational)
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Ned Freed
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<mrose+mtr.ietf@dbc.mtview.ca.us>
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Network Working Group A. Beck
Request for Comments: 3836 M. Hofmann
Category: Informational Lucent Technologies
H. Orman
Purple Streak Development
R. Penno
Nortel Networks
A. Terzis
Johns Hopkins University
August 2004
Requirements for Open Pluggable Edge Services (OPES)
Callout Protocols
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2004).
Abstract
This document specifies the requirements that the OPES (Open
Pluggable Edge Services) callout protocol must satisfy in order to
support the remote execution of OPES services. The requirements are
intended to help evaluate possible protocol candidates, as well as to
guide the development of such protocols.
Beck, et al. Informational [Page 1]
RFC 3836 Requirements for OPES Callout Protocols August 2004
Table of Contents
1. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . 2
3. Functional Requirements . . . . . . . . . . . . . . . . . . . 3
3.1. Reliability . . . . . . . . . . . . . . . . . . . . . . 3
3.2. Congestion Avoidance . . . . . . . . . . . . . . . . . 3
3.3. Callout Transactions . . . . . . . . . . . . . . . . . 3
3.4. Callout Connections . . . . . . . . . . . . . . . . . . 4
3.5. Asynchronous Message Exchange . . . . . . . . . . . . . 5
3.6. Message Segmentation . . . . . . . . . . . . . . . . . 5
3.7. Support for Keep-Alive Mechanism . . . . . . . . . . . 6
3.8. Operation in NAT Environments . . . . . . . . . . . . . 6
3.9. Multiple Callout Servers . . . . . . . . . . . . . . . 6
3.10. Multiple OPES Processors . . . . . . . . . . . . . . . 6
3.11. Support for Different Application Protocols . . . . . . 7
3.12. Capability and Parameter Negotiations . . . . . . . . . 7
3.13. Meta Data and Instructions . . . . . . . . . . . . . . 8
4. Performance Requirements . . . . . . . . . . . . . . . . . . 9
4.1. Protocol Efficiency . . . . . . . . . . . . . . . . . . 9
5. Security Requirements . . . . . . . . . . . . . . . . . . . . 9
5.1. Authentication, Confidentiality, and Integrity . . . . 9
5.2. Hop-by-Hop Confidentiality. . . . . . . . . . . . . . . 10
5.3. Operation Across Untrusted Domains. . . . . . . . . . . 10
5.4. Privacy . . . . . . . . . . . . . . . . . . . . . . . . 10
6. Security Considerations . . . . . . . . . . . . . . . . . . . 10
7. References. . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.1. Normative References. . . . . . . . . . . . . . . . . . 10
7.2. Informative References. . . . . . . . . . . . . . . . . 11
8. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 11
9. Authors' Addresses. . . . . . . . . . . . . . . . . . . . . . 12
10. Full Copyright Statement. . . . . . . . . . . . . . . . . . . 13
1. Terminology
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 BCP 14, RFC 2119 [2].
2. Introduction
The Open Pluggable Edge Services (OPES) architecture [1] enables
cooperative application services (OPES services) between a data
provider, a data consumer, and zero or more OPES processors. The
application services under consideration analyze, and possibly
transform, application-level messages exchanged between the data
provider and the data consumer.
Beck, et al. Informational [Page 2]
RFC 3836 Requirements for OPES Callout Protocols August 2004
The execution of such services is governed by a set of rules
installed on the OPES processor. The enforcement of rules can
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