Puma: v6.0.0 Release

6.0.0 Sunflower

• Breaking Changes

  • Dropping Ruby 2.2 and 2.3 support (now 2.4+) ([#2919])
  • Remote_addr functionality has changed ([#2652], [#2653])
  • No longer supporting Java 1.7 or below (JRuby 9.1 was the last release to support this) ([#2849])
  • Remove nakayoshi GC ([#2933], [#2925])
  • wait_for_less_busy_worker is now default on ([#2940])
  • Prefix all environment variables with PUMA_ ([#2924], [#2853])
  • Removed some constants ([#2957], [#2958], [#2959], [#2960])
  • The following classes are now part of Puma's private API: Client, Cluster::Worker, Cluster::Worker, HandleRequest. ([#2988])
  • Configuration constants like DefaultRackup removed ([#2928])
  • Extracted LogWriter from Events ([#2798])

• Features

  • Increase throughput on large (100kb+) response bodies by 3-10x ([#2896], [#2892])
  • Increase throughput on file responses ([#2923])
  • Add support for streaming bodies in Rack. ([#2740])
  • Allow OpenSSL session reuse via a 'reuse' ssl_bind method or bind string query parameter ([#2845])
  • Allow run_hooks to pass a hash to blocks for use later ([#2917], [#2915])
  • Allow using preload_app! with fork_worker ([#2907])
  • Support request_body_wait metric with higher precision ([#2953])
  • Allow header values to be arrays (Rack 3) ([#2936], [#2931])
  • Export Puma/Ruby versions in /stats ([#2875])
  • Allow configuring request uri max length & request path max length ([#2840])
  • Add a couple of public accessors ([#2774])
  • Log entire backtrace when worker start fails ([#2891])
  • [jruby] Enable TLSv1.3 support ([#2886])
  • [jruby] support setting TLS protocols + rename ssl_cipher_list ([#2899])
  • [jruby] Support a truststore option ([#2849], [#2904], [#2884])

• Bugfixes

  • Load the configuration before passing it to the binder ([#2897])
  • Do not raise error raised on HTTP methods we don't recognize or support, like CONNECT ([#2932], [#1441])
  • Fixed a memory leak when creating a new SSL listener ([#2956])

• Refactor

  • log_writer.rb - add internal_write method ([#2888])
  • Extract prune_bundler code into it's own class. ([#2797])
  • Refactor Launcher#run to increase readability (no logic change) ([#2795])
  • Ruby 3.2 will have native IO#wait_* methods, don't require io/wait ([#2903])
  • Various internal API refactorings ([#2942], [#2921], [#2922], [#2955])