x/net/http2: move frame operations to x/net/http2/http2frame #67819
Description
This issue is part of a project to move x/net/http2 into std: #67810
The golang.org/x/net/http2 package includes support for reading and writing HTTP/2 frames. The http2.Framer type reads and writes frames, and a number of additional types represent specific frames.
Frame support adds a large amount of API surface that few users need. Users who send and receive HTTP/2 requests operate at a higher level than framing, which is an internal protocol detail.
I propose moving Framer and all of its ancillary types into a new golang.org/x/net/http2/http2frame package and eventually deprecating the versions in http2.
Specifically, the following types will move into the new package:
ContinuationFrameDataFrameFrameFrameHeaderFrameTypeFrameWriteRequestFramerGoAwayFrameHeadersFrameHeadersFrameParamMetaHeadersFramePingFramePriorityFramePriorityParamPushPromiseFramePushPromiseParamRSTStreamFrameSettingsFrameUnknownFrameWindowUpdateFrame