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Update release notes.
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‎readme.md‎

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@@ -18,10 +18,53 @@ Please see the [project releases](https://socketry.github.io/protocol-http2/rele
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- Introduce a limit to the number of CONTINUATION frames that can be read to prevent resource exhaustion. The default limit is 8 continuation frames, which means a total of 9 frames (1 initial + 8 continuation). This limit can be adjusted by passing a different value to the `limit` parameter in the `Continued.read` method. Setting the limit to 0 will only read the initial frame without any continuation frames. In order to change the default, you can redefine the `LIMIT` constant in the `Protocol::HTTP2::Continued` module, OR you can pass a different frame class to the framer.
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### v0.22.1
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- Improved tracing performance by only tracing framer operations when in an active trace context.
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- Updated `protocol-http` dependency version in gemspec.
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- Code modernization and documentation improvements.
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### v0.22.0
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- [Added Priority Update Frame and Stream Priority](https://socketry.github.io/protocol-http2/releases/index#added-priority-update-frame-and-stream-priority)
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### v0.21.0
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- **Breaking**: Removed support for priority frame and stream dependencies. The `Protocol::HTTP2::Stream` class no longer tracks dependencies, and `Stream#send_headers` no longer takes `priority` as the first argument. This change simplifies the internal implementation significantly as HTTP/2 priority frames have been deprecated in the protocol specification.
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### v0.20.0
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- Improved performance of dependency management by avoiding linear search operations.
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- Removed `traces` as a required dependency - it's now optional and only used when explicitly needed.
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- Added better documentation for `maximum_concurrent_streams` setting.
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- Restored 100% test coverage and exposed trace provider for optional tracing support.
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### v0.19.4
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- Reduced the number of window update frames sent to improve network efficiency.
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### v0.19.3
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- Improved window update frame handling and performance optimizations.
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- Better implementation of `Window#inspect` for debugging.
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### v0.19.2
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- Added traces to framer for better debugging and monitoring capabilities.
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- Minor fixes to logging output.
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### v0.19.1
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- Performance improvements for synchronized output handling.
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- Extracted `window.rb` into separate module for better organization.
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### v0.19.0
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- Removed unused `opened` hook that was never utilized.
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- Improved ASCII art diagram in documentation.
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- Modernized gem structure and dependencies.
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- Moved test fixtures into proper namespace organization.
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## See Also
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- [Async::HTTP](https://github.com/socketry/async-http) - A high-level HTTP client and server implementation.

‎releases.md‎

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- Introduce a limit to the number of CONTINUATION frames that can be read to prevent resource exhaustion. The default limit is 8 continuation frames, which means a total of 9 frames (1 initial + 8 continuation). This limit can be adjusted by passing a different value to the `limit` parameter in the `Continued.read` method. Setting the limit to 0 will only read the initial frame without any continuation frames. In order to change the default, you can redefine the `LIMIT` constant in the `Protocol::HTTP2::Continued` module, OR you can pass a different frame class to the framer.
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## v0.22.1
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- Improved tracing performance by only tracing framer operations when in an active trace context.
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- Updated `protocol-http` dependency version in gemspec.
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- Code modernization and documentation improvements.
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## v0.22.0
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### Added Priority Update Frame and Stream Priority
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HTTP/2 has deprecated the priority frame and stream dependency tracking. This feature has been effectively removed from the protocol. As a consequence, the internal implementation is greatly simplified. The `Protocol::HTTP2::Stream` class no longer tracks dependencies, and this includes `Stream#send_headers` which no longer takes `priority` as the first argument.
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Optional per-request priority can be set using the `priority` header instead, and this value can be manipulated using the priority update frame.
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## v0.21.0
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- **Breaking**: Removed support for priority frame and stream dependencies. The `Protocol::HTTP2::Stream` class no longer tracks dependencies, and `Stream#send_headers` no longer takes `priority` as the first argument. This change simplifies the internal implementation significantly as HTTP/2 priority frames have been deprecated in the protocol specification.
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## v0.20.0
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- Improved performance of dependency management by avoiding linear search operations.
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- Removed `traces` as a required dependency - it's now optional and only used when explicitly needed.
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- Added better documentation for `maximum_concurrent_streams` setting.
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- Restored 100% test coverage and exposed trace provider for optional tracing support.
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## v0.19.4
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- Reduced the number of window update frames sent to improve network efficiency.
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## v0.19.3
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- Improved window update frame handling and performance optimizations.
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- Better implementation of `Window#inspect` for debugging.
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## v0.19.2
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- Added traces to framer for better debugging and monitoring capabilities.
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- Minor fixes to logging output.
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## v0.19.1
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- Performance improvements for synchronized output handling.
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- Extracted `window.rb` into separate module for better organization.
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## v0.19.0
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- Removed unused `opened` hook that was never utilized.
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- Improved ASCII art diagram in documentation.
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- Modernized gem structure and dependencies.
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- Moved test fixtures into proper namespace organization.
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## v0.18.0
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- Fixed `maximum_connection_streams` reference to use `@remote_settings`.
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- Modernized gem structure and dependencies.
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- Improved flush synchronization - `#flush` is already synchronized.
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## v0.17.0
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- Exposed synchronize flush functionality for better concurrency control.
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- Improved single line responsibility in code structure.
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- Enhanced error handling - fail in `Connection#write_frames` if `@framer` is `nil`.
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- Fixed broken test cases.
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## v0.16.0
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- Removed unused `bake-github-pages` gem dependency.
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- Modernized gem structure and build process.
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- Updated development dependencies and workflows.
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## v0.15.0
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- Achieved 100% test coverage with comprehensive test improvements.
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- Fixed multiple minor bugs discovered through enhanced testing.
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- Modernized gem structure and development workflow.
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- Improved maximum concurrent stream handling - now defined only by local settings.
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- Added missing require statements in version tests.
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## v0.14.0
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- Added fuzzing support for the framer to improve robustness.
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- Improved connection closed state determination.
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- Enhanced error handling by ignoring expected errors.
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- Optimized AFL (American Fuzzy Lop) latency handling.
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## v0.13.0
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- Added methods for handling state transitions.
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- Removed `pry` and `rake` dependencies for cleaner gem structure.
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- Improved debugging and development workflow.
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## v0.12.0
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- Updated supported Ruby versions.
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- Significantly improved flow control handling, allowing connection local window to have desired high water mark.
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- Enhanced window management for better performance.
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## v0.11.0
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- Separated stream and priority logic to improve memory efficiency.
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- Added Ruby 2.7 support to continuous integration.
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- Improved code organization and performance.
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## v0.10.0
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- Improved child stream handling - don't consider child in future stream priority computations.
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- Enhanced state transitions to cache number of currently active streams.
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- Performance optimizations for stream management.
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## v0.9.0
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- Split window handling for sub-classes to improve modularity.
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- Fixed Travis CI badge in documentation.
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- Enhanced window management architecture.
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## v0.8.0
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- Added support for synchronizing output to prevent headers from being encoded out of order.
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- Improved header handling reliability and consistency.
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## v0.7.0
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- Introduced explicit `StreamError` for stream reset codes.
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- Added `HeaderError` for tracking header-specific problems (e.g., invalid pseudo-headers).
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- Removed `send_failure` method as it was not useful.
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- Improved `header_table_size` handling.
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- Enhanced stream priority handling and parent/child relationships.
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- Better flow control and priority management.
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- Improved debugging output and error validation.
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- Enhanced handling of `end_stream` and connection management.
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- Added stream buffer implementation with window update integration.
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- Implemented basic stream priority handling.
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- Improved goaway frame handling.
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## v0.6.0
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- Better handling of GOAWAY frames.
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- Improved connection termination procedures.
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## v0.5.0
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- Improved handling of stream creation and push promises.
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- Enhanced stream lifecycle management.
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## v0.4.0
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- Improved validation of stream ID and error handling.
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- Enhanced flow control implementation.
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- Better RFC compliance with HTTP/2 specification.
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- Fixed priority frame validation - fail if priority depends on own stream.
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- Improved ping frame length checking.
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- Enhanced logging messages and error reporting.
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## v0.3.0
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- Added support for `ENABLE_CONNECT_PROTOCOL` setting.
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- Better handling of underlying IO being closed.
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- Improved connection management and error handling.
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- Enhanced coverage reporting.
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## v0.2.1
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- Fixed header length and EOF handling.
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- Improved error boundary conditions.
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## v0.2.0
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- Significantly improved error handling throughout the library.
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- Better exception management and error reporting.
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## v0.1.1
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- Fixed HPACK usage and integration.
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- Corrected header compression/decompression handling.
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## v0.1.0
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- Initial migration of HTTP/2 protocol implementation from `http-protocol`.
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- Basic HTTP/2 frame parsing and generation.
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- Integration with `protocol-hpack` for header compression.
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- Stream management and flow control foundation.
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- Connection lifecycle management.
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- Support for all standard HTTP/2 frame types.
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- Basic client and server implementations.

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