• Add preliminary rustls support
• Add experimental support for windows
• Add the option to use no TLS implementation
• Add support for gRPC-web module to bridge gRPC-web client requests to gRPC server requests
• Add the support for h2c and http1 to coexist
• Add the support for custom L4 connector
• Support opaque extension field in Backend
• Add the ability to ignore informational responses when proxying downstream
• Add un-gzip support and allow decompress by algorithm
• Add the ability to observe backend health status
• Add the support for passing sentry release
• Add the support for binding to local port ranges
• Support retrieving rx timestamp for TcpStream

• Handle bare IPv6 address in raw connect Host
• Set proper response headers when compression is enabled
• Check the current advertised h2 max streams
• Other bug fixes and improvements

• Make sentry an optional feature
• Make timeouts Sync
• Retry all h2 connection when encountering graceful shutdown
• Make l4 module pub to expose Connect
• Auto snake case set-cookie header when downgrade to from h2 to http1.1
• shutdown h2 connection gracefully with GOAWAYs
• Other API signature updates

Full Changelog: https://github.com/cloudflare/pingora/compare/0.3.0...0.4.0

• Add support for HTTP modules. This feature allows users to import modules written by 3rd parties.
• Add request_body_filter. Now request body can be inspected and modified.
• Add H2c support.
• Add TCP fast open support.
• Add support for server side TCP keep-alive.
• Add support to get TCP_INFO.
• Add support to set DSCP.
• Add or_err()/or_err_with API to convert Options to pingora::Error.
• Add or_fail() API to convert impl std::error::Error to pingora::Error.
• Add the API to track socket read and write pending time.
• Compression: allow setting level per algorithm.

• Fixed a panic when using multiple H2 streams in the same H2 connection to upstreams.
• Pingora now respects the Connection header it sends to upstream.
• Accept-Ranges header is now removed when response is compressed.
• Fix ipv6_only socket flag.
• A new H2 connection is opened now if the existing connection returns GOAWAY with graceful shutdown error.
• Fix a FD mismatch error when 0.0.0.0 is used as the upstream IP

• Dependency: replace structopt with clap
• Rework the API of HTTP modules
• Optimize remove_header() API call
• UDS parsing now requires the path to have unix: prefix. The support for the path without prefix is deprecated and will be removed on the next release.
• Other minor API changes

• Add support for downstream h2 trailers and add an upstream h2 response trailer filter
• Add the ability to set TCP recv buf size
• Add a convenience function to retrieve Session digest
• Add body_bytes_read() method to Session
• Add cache_not_modified_filter
• Add SSLKEYLOG support for tls upstream
• Add Service<HttpProxy<T>> constructor for providing name
• Add purge_response callback
• Make pop_closed pub, to simplify DIY drains

• Fixed gRPC trailer proxying
• Fixed response_body_filter end_of_stream always being false
• Fixed compile error in Rust <= 1.73
• Fixed non linux build
• Fixed the counting problem of used_weight data field in LruUnit<T>
• Fixed cargo run --example server missing cert
• Fixed error log string interpolation outside of proper context
• Fixed tinylfu test flake

• API change: Server::run_forever now takes ownership and ensures exit semantics
• API change: cleanup() method of ServerApp trait is now async
• Behavior change: Always return HttpTask::Body on body done instead of HttpTask::done
• Behavior change: HTTP/1 reason phrase is now parsed and proxied
• Updated h2 dependency for RUSTSEC-2024-0332
• Updated zstd dependencies
• Code optimization and refactor in a few crates
• More examples and docs

• Server::new now accepts Into<Option<T>>
• Implemented client HttpSession::get_keepalive_values for Keep-Alive parsing
• Expose ListenFds and Fds to fix a voldemort types issue
• Expose config options in ServerConf, provide new Server constructor
• upstream_response_filter now runs on upstream 304 responses during cache revalidation
• Added server_addr and client_addr APIs to Session
• Allow body modification in response_body_filter
• Allow configuring grace period and graceful shutdown timeout
• Added TinyUFO sharded skip list storage option

• Fixed build failures with the boringssl feature
• Fixed compile warnings with nightly Rust
• Fixed an issue where Upgrade request bodies might not be handled correctly
• Fix compilation to only include openssl or boringssl rather than both
• Fix OS read errors so they are reported as ReadError rather than ReadTimeout when reading http/1.1 response headers

• Performance improvements in pingora-ketama
• Added more TinyUFO benchmarks
• Added tests for pingora-cache purge
• Limit buffer size for InvalidHTTPHeader error logs
• Example code: improvements in pingora client, new LB cluster example
• Typo fixes and clarifications across comments and docs

• First Public Release of Pingora 🎉