Revert "[close #1811] Minimum Ruby version >= 2.5"

.rubocop.yml

@@ -1,6 +1,6 @@
 AllCops:
   DisabledByDefault: true
-  TargetRubyVersion: 2.5
+  TargetRubyVersion: 2.2
   DisplayCopNames: true
   StyleGuideCopsOnly: false
   Exclude:

.travis.yml

@@ -8,7 +8,8 @@ before_install:
     r_eng="$(ruby -e 'STDOUT.write RUBY_ENGINE')";
     rv="$(ruby -e 'STDOUT.write RUBY_VERSION')";
     if [ "$r_eng" == "ruby" ]; then
-      if [ "$rv" \< "2.6" ]; then gem update --system --no-document --conservative
+      if   [ "$rv" \< "2.3" ]; then gem update --system 2.7.9 --no-document
+      elif [ "$rv" \< "2.6" ]; then gem update --system --no-document --conservative
       fi
     fi
     if [ "$TRAVIS_OS_NAME" == "osx" ]; then
@@ -24,6 +25,9 @@ script:
   - bundle exec rake
 
 rvm:
+  - 2.2.10
+  - 2.3.8
+  - 2.4.6
   - 2.5.5
   - 2.6.3
   - ruby-head
@@ -33,6 +37,9 @@ matrix:
   include:
     - rvm: ruby-head
       env: RUBYOPT="--jit"
+    - rvm: 2.4.6
+      os: osx
+      osx_image: xcode10.2
     - rvm: 2.5.5
       os: osx
       osx_image: xcode10.2

History.md

@@ -9,7 +9,6 @@
   * Add option to suppress SignalException on SIGTERM (#1690)
   * Allow mutual TLS CA to be set using `ssl_bind` DSL (#1689)
   * Reactor now uses nio4r instead of `select` (#1728)
-  * Minimum Ruby version now >= 2.5 (#1813)
 * x bugfixes
   * Do not accept new requests on shutdown (#1685, #1808)
   * Fix 3 corner cases when request body is chunked (#1508)

lib/puma/binder.rb

@@ -63,7 +63,7 @@ module Puma
       remove = []
 
       ENV.each do |k,v|
-        if /PUMA_INHERIT_\d+/.match?(k)
+        if k =~ /PUMA_INHERIT_\d+/
           fd, url = v.split(":", 2)
           @inherited_fds[url] = fd.to_i
           remove << k
@@ -75,7 +75,7 @@ module Puma
               key = [ :unix, Socket.unpack_sockaddr_un(sock.getsockname) ]
             rescue ArgumentError
               port, addr = Socket.unpack_sockaddr_in(sock.getsockname)
-              if /\:/.match?(addr)
+              if addr =~ /\:/
                 addr = "[#{addr}]"
               end
               key = [ :tcp, addr, port ]

lib/puma/configuration.rb

@@ -348,7 +348,7 @@ module Puma
       end
 
       if bytes
-        token = +""
+        token = "".dup
         bytes.each_byte { |b| token << b.to_s(16) }
       else
         token = (0..count).to_a.map { rand(255).to_s(16) }.join

lib/puma/server.rb

@@ -105,7 +105,7 @@ module Puma
     # On Linux, use TCP_CORK to better control how the TCP stack
     # packetizes our stream. This improves both latency and throughput.
     #
-    if RUBY_PLATFORM.match?(/linux/)
+    if RUBY_PLATFORM =~ /linux/
       UNPACK_TCP_STATE_FROM_TCP_INFO = "C".freeze
 
       # 6 == Socket::IPPROTO_TCP

puma.gemspec

@@ -17,8 +17,5 @@ Gem::Specification.new do |s|
             %w[History.md LICENSE README.md]
   s.homepage = "http://puma.io"
   s.license = "BSD-3-Clause"
-
-  # We will guarantee to support the last 2 major releases,
-  # and may choose to support further back as we see fit.
-  s.required_ruby_version = Gem::Requirement.new(">= 2.5")
+  s.required_ruby_version = Gem::Requirement.new(">= 2.2")
 end

test/shell/t1.rb

@@ -11,7 +11,7 @@ log = File.read("t1-stdout")
 File.unlink "t1-stdout" if File.file? "t1-stdout"
 File.unlink "t1-pid" if File.file? "t1-pid"
 
-if %r!GET / HTTP/1\.1!.match?(log)
+if log =~ %r!GET / HTTP/1\.1!
   exit 0
 else
   exit 1

test/test_integration.rb

@@ -186,7 +186,7 @@ class TestIntegration < Minitest::Test
     until done
       @events.stdout.rewind
       log = @events.stdout.readlines.join("")
-      if /- Worker \d \(pid: \d+\) booted, phase: 1/.match?(log)
+      if log =~ /- Worker \d \(pid: \d+\) booted, phase: 1/
         assert_match(/TERM sent/, log)
         assert_match(/- Worker \d \(pid: \d+\) booted, phase: 1/, log)
         done = true

test/test_persistent.rb

@@ -37,7 +37,7 @@ class TestPersistent < Minitest::Test
   end
 
   def lines(count, s=@client)
-    str = +""
+    str = "".dup
     Timeout.timeout(5) do
       count.times { str << s.gets }
     end

win_gem_test/puma.ps1

@@ -13,7 +13,7 @@ Make-Const repo_name 'puma'
 Make-Const url_repo  'https://github.com/puma/puma.git'
 
 #———————————————————————————————————————————————————————————————— lowest ruby version
-Make-Const ruby_vers_low 25
+Make-Const ruby_vers_low 22
 # null = don't compile; false = compile, ignore test (allow failure);
 # true = compile & test
 Make-Const trunk     $false ; Make-Const trunk_x64     $false