# 0.4.14 (May 5, 2026)* Add `header_table_size()` option to server builder.* Fix leaking connection flow control of padded DATA frames when stream is reset.* Fix leaking connection flow control when canceling a stream after reserving capacity.* Fix leaking connection flow control when receiving a DATA frame after GOAWAY.* Fix waking the `poll_capacity` when locally reseting a stream from library.* Fix sending HEADERS on a reset stream before the RST_STREAM frame.* Fix receiving GOAWAY to not close peer-initiated streams.* Optimize header value decoding to copy less bytes.# 0.4.13 (January 5, 2026)* Add support for 1xx informational responses on client and server side.* Fix auto-releasing of padding bytes of DATA frames for flow control windows.* Fix to stop assigning capacity to pending streams which can't use it yet.* Fix tracing to not grab the parent for the connection span.# 0.4.12 (August 5, 2025)* Fix default limits on max stored reset streams and duration to more reasonable values.# 0.4.11 (June 30, 2025)* Fix client to not return an error when a clean shutdown otherwise doesn't get a TLS close_notify, which some servers don't bother sending.# 0.4.10 (May 5, 2025)* Fix `is_end_stream()` to return true only when ended cleanly, not when errored.# 0.4.9 (April 14, 2025)* Add `sever::Connection::has_streams()` method to check for active streams.# 0.4.8 (February 18, 2025)* Fix handling implicit stream resets at the more correct time.* Fix window size decrements of send-closed streams.* Fix reclaiming of reserved capacity when streams are closed.* Fix to no longer call `poll_flush` after `poll_shutdown`.* Fix busy loop in task when poll_shutdown returns pending.# 0.4.7 (November 19, 2024)* Fix treating HEADERS frames with a non-zero content-length but END_STREAM flag as malformed.* Fix notifying the stream task when automatically reset on receipt of a stream error.# 0.4.6 (August 19, 2024)* Add `current_max_send_streams()` and `current_max_recv_streams()` to `client::SendRequest`.* Fix sending a PROTOCOL_ERROR instead of REFUSED_STREAM when receiving oversized headers.* Fix notifying a PushPromise task properly.* Fix notifying a stream task when reset.# 0.4.5 (May 17, 2024)* Fix race condition that sometimes hung connections during shutdown.* Fix pseudo header construction for CONNECT and OPTIONS requests.# 0.4.4 (April 3, 2024)* Limit number of CONTINUATION frames for misbehaving connections.# 0.4.3 (March 15, 2024)* Fix flow control limits to not apply until receiving SETTINGS ack.* Fix not returning an error if IO ended without `close_notify`.* Improve performance of decoding many headers.# 0.4.2 (January 17th, 2024)* Limit error resets for misbehaving connections.* Fix selecting MAX_CONCURRENT_STREAMS value if no value is advertised initially.# 0.4.1 (January 8, 2024)* Fix assigning connection capacity which could starve streams in some instances.# 0.4.0 (November 15, 2023)* Update to `http` 1.0.* Remove deprecated `Server::poll_close()`.# 0.3.22 (November 15, 2023)* Add `header_table_size(usize)` option to client and server builders.* Improve throughput when vectored IO is not available.* Update indexmap to 2.# 0.3.21 (August 21, 2023)* Fix opening of new streams over peer's max concurrent limit.* Fix `RecvStream` to return data even if it has received a `CANCEL` stream error.* Update MSRV to 1.63.# 0.3.20 (June 26, 2023)* Fix panic if a server received a request with a `:status` pseudo header in the 1xx range.* Fix panic if a reset stream had pending push promises that were more than allowed.* Fix potential flow control overflow by subtraction, instead returning a connection error.# 0.3.19 (May 12, 2023)* Fix counting reset streams when triggered by a GOAWAY.* Send `too_many_resets` in opaque debug data of GOAWAY when too many resets received.# 0.3.18 (April 17, 2023)* Fix panic because of opposite check in `is_remote_local()`.# 0.3.17 (April 13, 2023)* Add `Error::is_library()` method to check if the originated inside `h2`.* Add `max_pending_accept_reset_streams(usize)` option to client and server  builders.* Fix theoretical memory growth when receiving too many HEADERS and then  RST_STREAM frames faster than an application can accept them off the queue.  (CVE-2023-26964)# 0.3.16 (February 27, 2023)* Set `Protocol` extension on requests when received Extended CONNECT requests.* Remove `B: Unpin + 'static` bound requiremented of bufs* Fix releasing of frames when stream is finished, reducing memory usage.* Fix panic when trying to send data and connection window is available, but stream window is not.* Fix spurious wakeups when stream capacity is not available.# 0.3.15 (October 21, 2022)* Remove `B: Buf` bound on `SendStream`'s parameter* add accessor for `StreamId` u32# 0.3.14 (August 16, 2022)* Add `Error::is_reset` function.* Bump MSRV to Rust 1.56.* Return `RST_STREAM(NO_ERROR)` when the server early responds.# 0.3.13 (March 31, 2022)* Update private internal `tokio-util` dependency.# 0.3.12 (March 9, 2022)* Avoid time operations that can panic (#599)* Bump MSRV to Rust 1.49 (#606)* Fix header decoding error when a header name is contained at a continuation  header boundary (#589)* Remove I/O type names from handshake `tracing` spans (#608)# 0.3.11 (January 26, 2022)* Make `SendStream::poll_capacity` never return `Ok(Some(0))` (#596)* Fix panic when receiving already reset push promise (#597)# 0.3.10 (January 6, 2022)* Add `Error::is_go_away()` and `Error::is_remote()` methods.* Fix panic if receiving malformed PUSH_PROMISE with stream ID of 0.# 0.3.9 (December 9, 2021)* Fix hang related to new `max_send_buffer_size`.# 0.3.8 (December 8, 2021)* Add "extended CONNECT support". Adds `h2::ext::Protocol`, which is used for request and response extensions to connect new protocols over an HTTP/2 stream.* Add `max_send_buffer_size` options to client and server builders, and a default of ~400MB. This acts like a high-water mark for the `poll_capacity()` method.* Fix panic if receiving malformed HEADERS with stream ID of 0.# 0.3.7 (October 22, 2021)* Fix panic if server sends a malformed frame on a stream client was about to open.* Fix server to treat `:status` in a request as a stream error instead of connection error.# 0.3.6 (September 30, 2021)* Fix regression of `h2::Error` that were created via `From<h2::Reason>` not returning their reason code in `Error::reason()`.# 0.3.5 (September 29, 2021)* Fix sending of very large headers. Previously when a single header was too big to fit in a single `HEADERS` frame, an error was returned. Now it is broken up and sent correctly.* Fix buffered data field to be a bigger integer size.* Refactor error format to include what initiated the error (remote, local, or user), if it was a stream or connection-level error, and any received debug data.# 0.3.4 (August 20, 2021)* Fix panic when encoding header size update over a certain size.* Fix `SendRequest` to wake up connection when dropped.* Fix potential hang if `RecvStream` is placed in the request or response `extensions`.* Stop calling `Instant::now` if zero reset streams are configured.# 0.3.3 (April 29, 2021)* Fix client being able to make `CONNECT` requests without a `:path`.* Expose `RecvStream::poll_data`.* Fix some docs.# 0.3.2 (March 24, 2021)* Fix incorrect handling of received 1xx responses on the client when the request body is still streaming.# 0.3.1 (February 26, 2021)* Add `Connection::max_concurrent_recv_streams()` getter.* Add `Connection::max_concurrent_send_streams()` getter.* Fix client to ignore receipt of 1xx headers frames.* Fix incorrect calculation of pseudo header lengths when determining if a received header is too big.* Reduce monomorphized code size of internal code.# 0.3.0 (December 23, 2020)* Update to Tokio v1 and Bytes v1.* Disable `tracing`'s `log` feature. (It can still be enabled by a user in their own `Cargo.toml`.)# 0.2.7 (October 22, 2020)* Fix stream ref count when sending a push promise* Fix receiving empty DATA frames in response to a HEAD request* Fix handling of client disabling SERVER_PUSH# 0.2.6 (July 13, 2020)* Integrate `tracing` directly where `log` was used. (For 0.2.x, `log`s are still emitted by default.)# 0.2.5 (May 6, 2020)* Fix rare debug assert failure in store shutdown.# 0.2.4 (March 30, 2020)* Fix when receiving `SETTINGS_HEADER_TABLE_SIZE` setting.# 0.2.3 (March 25, 2020)* Fix server being able to accept `CONNECT` requests without `:scheme` or `:path`.* Fix receiving a GOAWAY frame from updating the recv max ID, it should only update max send ID.# 0.2.2 (March 3, 2020)* Reduce size of `FlowControl` and `RecvStream`.# 0.2.1 (December 6, 2019)* Relax `Unpin` bounds on the send `Buf` generic.# 0.2.0 (December 3, 2019)* Add `server::Connection::set_initial_window_size` and `client::Connection::set_initial_window_size` which can adjust the `INITIAL_WINDOW_SIZE` setting on an existing connection (#421).* Update to `http` v0.2.* Update to `tokio` v0.2.* Change `unstable-stream` feature to `stream`.* Change `ReserveCapacity` to `FlowControl` (#423).* Remove `From<io::Error>` for `Error`.# 0.2.0-alpha.3 (October 1, 2019)* Update to futures `0.3.0-alpha.19`.* Update to tokio `0.2.0-alpha.6`.# 0.2.0-alpha.2 (September 20, 2019)* Add server support for `PUSH_PROMISE`s (#327).* Update to tokio `0.2.0-alpha.5`.* Change `stream` feature to `unstable-stream`.# 0.2.0-alpha.1 (August 30, 2019)* Update from `futures` 0.1 to `std::future::Future`.* Update `AsyncRead`/`AsyncWrite` to `tokio-io` 0.2 alpha.* Change `Stream` implementations to be optional, default disabled. Specific async and poll functions are now inherent, and `Stream` can be re-enabled with the `stream` cargo feature.# 0.1.25 (June 28, 2019)* Fix to send a `RST_STREAM` instead of `GOAWAY` if receiving a frame on a previously closed stream.* Fix receiving trailers without an end-stream flag to be a stream error instead of connection error.# 0.1.24 (June 17, 2019)* Fix server wrongly rejecting requests that don't have an `:authority` header (#372).# 0.1.23 (June 4, 2019)* Fix leaking of received DATA frames if the `RecvStream` is never polled (#368).# 0.1.22 (June 3, 2019)* Fix rare panic when remote sends `RST_STREAM` or `GOAWAY` for a stream pending window capacity (#364).# 0.1.21 (May 30, 2019)* Fix write loop when a header didn't fit in write buffer.# 0.1.20 (May 16, 2019)* Fix lifetime conflict for older compilers.# 0.1.19 (May 15, 2019)* Fix rare crash if `CONTINUATION` frame resumed in the middle of headers with the same name.* Fix HPACK encoder using an old evicted index for repeated header names.# 0.1.18 (April 9, 2019)* Fix `server::Connection::abrupt_shutdown` to no longer return the same error the user sent (#352).# 0.1.17 (March 12, 2019)* Add user PING support (#346).* Fix notifying a `RecvStream` task if locally sending a reset.* Fix connections "hanging" when all handles are dropped but some streams had been reset.# 0.1.16 (January 24, 2019)* Log header values when malformed (#342).# 0.1.15 (January 12, 2019)* Fix race condition bug related to shutting down the client (#338).# 0.1.14 (December 5, 2018)* Fix closed streams to always return window capacity to the connection (#334).* Fix locking when `Debug` printing an `OpaqueStreamRef` (#333).* Fix inverted split for DATA frame padding (#330).* Reduce `Debug` noise for `Frame` (#329).# 0.1.13 (October 16, 2018)* Add client support for Push Promises (#314).* Expose `io::Error` from `h2::Error` (#311)* Misc bug fixes (#304, #309, #319, #313, #320).# 0.1.12 (August 8, 2018)* Fix initial send window size (#301).* Fix panic when calling `reserve_capacity` after connection has been closed (#302).* Fix handling of incoming `SETTINGS_INITIAL_WINDOW_SIZE`. (#299)# 0.1.11 (July 31, 2018)* Add `stream_id` accessors to public API types (#292).* Fix potential panic when dropping clients (#295).* Fix busy loop when shutting down server (#296).# 0.1.10 (June 15, 2018)* Fix potential panic in `SendRequest::poll_ready()` (#281).* Fix infinite loop on reset connection during prefix (#285).# 0.1.9 (May 31, 2018)* Add `poll_reset` to `SendResponse` and `SendStream` (#279).# 0.1.8 (May 23, 2018)* Fix client bug when max streams is reached. (#277)# 0.1.7 (May 14, 2018)* Misc bug fixes (#266, #273, #261, #275).# 0.1.6 (April 24, 2018)* Misc bug fixes related to stream management (#258, #260, #262).# 0.1.5 (April 6, 2018)* Fix the `last_stream_id` sent during graceful GOAWAY (#254).# 0.1.4 (April 5, 2018)* Add `initial_connection_window_size` to client and server `Builder`s (#249).* Add `graceful_shutdown` and `abrupt_shutdown` to `server::Connection`,  deprecating `close_connection` (#250).# 0.1.3 (March 28, 2018)* Allow configuring max streams before the peer's settings frame is  received (#242).* Fix HPACK decoding bug with regards to large literals (#244).* Fix state transition bug triggered by receiving a RST_STREAM frame (#247).# 0.1.2 (March 13, 2018)* Fix another bug relating to resetting connections and reaching  max concurrency (#238).# 0.1.1 (March 8, 2018)* When streams are dropped, close the connection (#222).* Notify send tasks on connection error (#231).* Fix bug relating to resetting connections and reaching max concurrency (#235).* Normalize HTTP request path to satisfy HTTP/2.0 specification (#228).* Update internal dependencies.# 0.1.0 (Jan 12, 2018)* Initial release