IETF 81 - HTTPbis -14/-15 Changes Overview

Julian Reschke, greenbytes

History

• -11: published August 2010 (after IETF 78)
• -12: published October 2010 (before IETF 79, WG did not meet)
• -13: published March 2011 (before IETF 80)
• -14: published April 2011 (after IETF 80)
• -15: published July 2011 (before IETF 81)

Changes

• Default charsets for text media types (Ticket 20)
• Handling multiple Content-Length headers (Ticket 95)
• Content-MD5 and partial responses (Ticket 178)
• message-body in CONNECT request (Ticket 251)
• HTTP-Version should be redefined as fixed length pair of DIGIT . DIGIT (Ticket 273)

Changes (Best Practices)

• Recommend minimum sizes for protocol elements (Ticket 282)
• Set expectations around buffering (Ticket 283)
• Considering messages in isolation (Ticket 288)

Changes (Rewrites)

• If-* and entities (Ticket 89)
• Definition of validator weakness (Ticket 101)
• ETags and Quotes (Ticket 269)

Changes (Status Codes)

• Clarify 203 Non-Authoritative Information (Ticket 203)
• Clarify status code for rate limiting (Ticket 255)
• Clarify 403 forbidden (Ticket 294)
• Clarify 203 Non-Authoritative Information (Ticket 296)

Changes (Caching)

• Mismatch Vary (Ticket 38)
• Cache Invalidation only happens upon successful responses (Ticket 235)
• Proxies don't 'understand' methods (Ticket 289)
• Cache Extensions can override no-store, etc. (Ticket 291)
• Pragma (Ticket 292)

Changes (Editorial)

• Allow is not in 13.5.2 (Ticket 53) (editorial)
• Untangle ABNFs for header fields (Ticket 276) (editorial)
• Confusing undefined parameter in media range example (Ticket 281) (editorial)
• Content-Length ABNF broken (Ticket 286) (editorial)
• Update default reason phrase for 413 (Ticket 298) (editorial)