(registered 2014-05-14, updated 2014-05-14) Name : Robin Berjon Email : robin&w3.org MIME media type name : Text MIME subtype name : Standards Tree - cache-manifest Required parameters : No parameters Optional parameters : charset The charset parameter may be provided. The parameter's value must be "utf-8". This parameter serves no purpose; it is only allowed for compatibility with legacy servers. Encoding considerations : 8bit Security considerations : Cache manifests themselves contain no executable content and pose no immediate risk unless sensitive information is included within the manifest. Implementations however, are required to follow specific rules when populating a cache based on a cache manifest, to ensure that certain origin-based restrictions are honoured. Failure to correctly implement these rules can result in information leakage, cross-site scripting attacks, and the like. Caching mechanisms are typically subjects of poisoning attacks and the one that this file type supports is no exception. The published specification includes steps intended to mitigate such issues (notably non-malicious cache poisoning from captive portals) but implementers are advised to exercise caution in caching. Additionally, the permanence of this caching mechanism requires care to be taken with respect to users' privacy (http://www.w3.org/TR/html/single-page.html#expiring-application-caches) and storage resources (http://www.w3.org/TR/html/single-page.html#disk-space). Interoperability considerations : Rules for generating and processing text/cache-manifest payloads are defined in the HTML specification. Published specification : http://www.w3.org/TR/html is the relevant specification. Applications which use this media : Web browsers. Fragment identifier considerations : Fragment identifiers have no meaning with the text/cache-manifest type. Restrictions on usage : No restrictions apply. Provisional registration? (standards tree only) : No. Additional information : 1. Deprecated alias names for this type : N/A 2. Magic number(s) : "CACHE MANIFEST" followed by [ \t\r\n] 3. File extension(s) : "appcache", "manifest" 4. Macintosh file type code : No specific Macintosh file type codes are recommended. 5. Object Identifiers: N/A Person to contact for further information : 1. Name : Robin Berjon 2. Email : robin&w3.org Intended usage : Common N/A Author/Change controller : Author/Change controller : Author: Ian Hickson Change controller: W3C