2.3.0

• Added a metric for reverse proxy connections (grouped by whether the connection is reused)
• Added option to disable the URL sanitizer (to allow passing request path as-is to proxy backend servers without the sanitizer rewriting the URL).
• Added support for canonicalized IP address placeholders.
• Added support for global and local reverse proxy TCP connection concurrency limits.
• Added support for timeouts for idle kept-alive connections in a reverse proxy.
• Fixed a CGI, SCGI and FastCGI interoperability issue caused by the wrong value of the "HTTPS" variable.
• Fixed an XSS bug through server administrator's email address specified in the server configuration.
• Fixed errors when using URL-safe Base64-encoded ACME EAB key HMACs with "=" at the end.
• Fixed explicit TLS version configuration being incorrectly applied.
• Improved error reporting for invalid URLs for SCGI and FastCGI.
• Optimized the performance of overall network I/O.
• Optimized the QUIC and HTTP/3 performance.
• Removed a configuration directive for specifying maximum idle kept-alive connection pool in a reverse proxy.
• Replaced mimalloc v2 with mimalloc v3 (and also dropped support for very early 64-bit x86 CPUs).
• Slightly optimized ETag generation for static file serving.
• The H3_NO_ERROR errors are no longer logged into the error log.
• The reverse proxy now no longer waits for non-ready connections to be ready (it now just pulls another connection from the pool).
• The reverse proxy now uses an unlimited idle kept-alive connection pool.
• The server is now accessible via IPv4 by default on Windows (IPv6 is enabled by default).
• The server now no longer fails automatic TLS certificate management tasks, when the ACME cache is inaccessible or corrupted.
• The server now removes some response headers that are invalid in HTTP/3, if the client is connected to the server via HTTP/3
• The server now uses a faster asynchronous Rust runtime (Monoio) on Windows (like it is on other platforms) instead of Tokio only.