§12 IANA Considerations RFC 9112

The change controller for the following registrations is: "IETF ([email protected]) - Internet Engineering Task Force".

IANA has added the following field names to the "Hypertext Transfer Protocol (HTTP) Field Name Registry" at , as described in HTTP.

Field Name  |  Status  |  Section  |  Comments
Close  |  permanent  |  9.6  |  (reserved)
MIME-Version  |  permanent  |  B.1  |  
Transfer-Encoding  |  permanent  |  6.1  |  

IANA has updated the "Media Types" registry at with the registration information in Sections 10.1 and 10.2 for the media types "message/http" and "application/http", respectively.

IANA has updated the "HTTP Transfer Coding Registry" at with the registration procedure of Section 7.3 and the content coding names summarized in the table below.

Name  |  Description  |  Section
chunked  |  Transfer in a series of chunks  |  7.1
compress  |  UNIX "compress" data format Welch  |  7.2
deflate  |  "deflate" compressed data (RFC1951) inside the "zlib" data format (RFC1950)  |  7.2
gzip  |  GZIP file format RFC1952  |  7.2
trailers  |  (reserved)  |  12.3
x-compress  |  Deprecated (alias for compress)  |  7.2
x-gzip  |  Deprecated (alias for gzip)  |  7.2

Note: the coding name "trailers" is reserved because its use would conflict with the keyword "trailers" in the TE header field (HTTP).

IANA has updated the "TLS Application-Layer Protocol Negotiation (ALPN) Protocol IDs" registry at with the registration below:

Protocol  |  Identification Sequence  |  Reference
HTTP/1.1  |  0x68 0x74 0x74 0x70 0x2f 0x31 0x2e 0x31 ("http/1.1")  |  RFC 9112