Indicating Character Encoding and Language for HTTP Header Field Parameters
draft-ietf-httpbis-rfc5987bis-01
HTTP Working Group J. Reschke
Internet-Draft greenbytes
Obsoletes: 5987 (if approved) March 4, 2016
Intended status: Standards Track
Expires: September 5, 2016
Indicating Character Encoding and Language for HTTP Header Field
Parameters
draft-ietf-httpbis-rfc5987bis-01
Abstract
By default, message header field parameters in Hypertext Transfer
Protocol (HTTP) messages cannot carry characters outside the ISO-
8859-1 character set. RFC 2231 defines an encoding mechanism for use
in Multipurpose Internet Mail Extensions (MIME) headers. This
document specifies an encoding suitable for use in HTTP header fields
that is compatible with a profile of the encoding defined in RFC
2231.
Editorial Note (To be removed by RFC Editor before publication)
Discussion of this draft takes place on the HTTPBIS working group
mailing list (ietf-http-wg@w3.org), which is archived at
<https://lists.w3.org/Archives/Public/ietf-http-wg/>.
Working Group information can be found at <http://httpwg.github.io/>;
source code and issues list for this draft can be found at
<https://github.com/httpwg/http-extensions>.
The changes in this draft are summarized in Appendix C.
Status of This Memo
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provisions of BCP 78 and BCP 79.
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Reschke Expires September 5, 2016 [Page 1]
Internet-Draft Charset/Language Encoding in HTTP March 2016
This Internet-Draft will expire on September 5, 2016.
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Internet-Draft Charset/Language Encoding in HTTP March 2016
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Notational Conventions . . . . . . . . . . . . . . . . . . . . 4
3. Comparison to RFC 2231 and Definition of the Encoding . . . . 4
3.1. Parameter Continuations . . . . . . . . . . . . . . . . . 5
3.2. Parameter Value Character Encoding and Language
Information . . . . . . . . . . . . . . . . . . . . . . . 5
3.2.1. Definition . . . . . . . . . . . . . . . . . . . . . . 5
3.2.2. Historical Notes . . . . . . . . . . . . . . . . . . . 7
3.2.3. Examples . . . . . . . . . . . . . . . . . . . . . . . 8
3.3. Language Specification in Encoded Words . . . . . . . . . 8
4. Guidelines for Usage in HTTP Header Field Definitions . . . . 9
4.1. When to Use the Extension . . . . . . . . . . . . . . . . 9
4.2. Error Handling . . . . . . . . . . . . . . . . . . . . . . 9
5. Security Considerations . . . . . . . . . . . . . . . . . . . 10
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.1. Normative References . . . . . . . . . . . . . . . . . . . 10
7.2. Informative References . . . . . . . . . . . . . . . . . . 12
Appendix A. Changes from RFC 5987 . . . . . . . . . . . . . . . . 13
Appendix B. Implementation Report . . . . . . . . . . . . . . . . 13
Appendix C. Change Log (to be removed by RFC Editor before
publication) . . . . . . . . . . . . . . . . . . . . 14
C.1. Since RFC5987 . . . . . . . . . . . . . . . . . . . . . . 14
C.2. Since draft-reschke-rfc5987bis-00 . . . . . . . . . . . . 14
C.3. Since draft-reschke-rfc5987bis-01 . . . . . . . . . . . . 14
C.4. Since draft-reschke-rfc5987bis-02 . . . . . . . . . . . . 14
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