Adds support for sending and receiving the SETTINGS_HEADER_TABLE_SIZE setting in oghttp2.

There is some danger in HPACK limit skew between endpoints, depending on when new limits are applied. For that reason, this change uses the following strategy.
* When sending the setting, the library applies the new limit upon receipt of an acknowledgement of the setting from the peer.
* When receiving the setting, the library applies the limit when sending an acknowledgement to the peer.

PiperOrigin-RevId: 413999148
9 files changed
tree: 31d024834e9e57fbd4f097518ad4d6ba244899fd
  1. common/
  2. epoll_server/
  3. http2/
  4. quic/
  5. spdy/


QUICHE stands for QUIC, Http/2, Etc. It is Google‘s production-ready implementation of QUIC, HTTP/2, HTTP/3, and related protocols and tools. It powers Google’s servers, Chromium, Envoy, and other projects. It is actively developed and maintained.

There are two public QUICHE repositories. Either one may be used by embedders, as they are automatically kept in sync:

To embed QUICHE in your project, platform APIs need to be implemented and build files need to be created. Note that it is on the QUICHE team's roadmap to include default implementation for all platform APIs and to open-source build files. In the meanwhile, take a look at open source embedders like Chromium and Envoy to get started:

To contribute to QUICHE, follow instructions at

QUICHE is only supported on little-endian platforms.