HTTP/2 "Dropped Frame" Frame

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Last updated 2020-02-09 (latest revision 2019-08-08)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document defines an extension to the Hypertext Transfer Protocol Version 2 (HTTP/2) that allows an endpoint to signal to its peer that an unsupported extension frame was discarded. Note to Readers The issues list for this draft can be found at < HTTP%2F2%20NAK%20Frame> The most recent (often unpublished) draft is at <>


Matthew Kerwin (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)