Type name: application Subtype name: alto-updatestreamcontrol+json Required parameters: n/a Optional parameters: n/a Encoding considerations: Encoding considerations are identical to those specified for the "application/json" media type. See [RFC8259]. Security considerations: Security considerations relating to the generation and consumption of ALTO Protocol messages are discussed in Section 10 of [RFC8895] and Section 15 of [RFC7285]. Interoperability considerations: [RFC8895] specifies format of conforming messages and the interpretation thereof. Published specification: Section 5.3 of [RFC8895]. Applications that use this media type: ALTO servers and ALTO clients either stand alone or are embedded within other applications. Fragment identifier considerations: n/a Additional information: Magic number(s): n/a File extension(s): [RFC8895] uses the mime type to refer to protocol messages and thus does not require a file extension. Macintosh file type code(s): n/a Person & email address to contact for further information: See Authors' Addresses section. Intended usage: COMMON Restrictions on usage: n/a Author: See Authors' Addresses section. Change controller: Internet Engineering Task Force (mailto:iesg&ietf.org).