Speed up tenfourfox12/18/2022 ![]() ![]() SPDY control frames contain 15 dedicated bits to indicate the version of protocol used for the current session. Please help update this article to reflect recent events or newly available information. The reason given is: SPDY was removed from all major implementations in favor of HTTP/2. Apple has deprecated the technology in macOS 10.14.4 and iOS 12.2. ![]() Google removed SPDY support in Google Chrome 51 which was released in 2016. On January 25, 2019, Apple announced that SPDY would be deprecated in favor of HTTP/2, and would be removed in future releases. ![]() On February 11, 2016, Google announced that Chrome would no longer support SPDY after May 15, 2016, the one-year anniversary of RFC 7540 which standardized HTTP/2. On May 15, 2015, HTTP/2 was officially ratified as RFC 7540. In February 2015, Google announced that following ratification of the HTTP/2 standard, support for SPDY would be deprecated, and that support for SPDY would be withdrawn. Throughout the process, the core developers of SPDY have been involved in the development of HTTP/2, including both Mike Belshe and Roberto Peon.Ĭhromium, Mozilla Firefox, Opera, Amazon Silk, Internet Explorer, and Safari expressed support for SPDY at the time. SPDY (draft-mbelshe-httpbis-spdy-00) was chosen as the starting point. The IETF working group for HTTPbis has released the draft of HTTP/2. The first draft of HTTP/2 used SPDY as the working base for its specification draft and editing. Īs of July 2012, the group developing SPDY stated publicly that it was working toward standardisation (available as an Internet Draft). Since then, there have been a number of changes, based on discussion in the Working Group and feedback from implementers. After a call for proposals and a selection process, SPDY was chosen as the basis for HTTP/2. HTTP/2 was first discussed when it became apparent that SPDY was gaining traction with implementers (like Mozilla and nginx), and was showing significant improvements over HTTP/1.x. ![]()
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