Update to require PHP 7.1+

.github/workflows/ci.yml

@@ -19,11 +19,6 @@ jobs:
           - 7.3
           - 7.2
           - 7.1
-          - 7.0
-          - 5.6
-          - 5.5
-          - 5.4
-          - 5.3
     steps:
       - uses: actions/checkout@v4
       - uses: shivammathur/setup-php@v2
@@ -50,19 +45,3 @@ jobs:
           ini-file: development
       - run: composer install
       - run: vendor/bin/phpunit --coverage-text
-
-  PHPUnit-hhvm:
-    name: PHPUnit (HHVM)
-    runs-on: ubuntu-22.04
-    continue-on-error: true
-    steps:
-      - uses: actions/checkout@v4
-      - run: cp "$(which composer)" composer.phar && ./composer.phar self-update --2.2 # downgrade Composer for HHVM
-      - name: Run hhvm composer.phar install
-        uses: docker://hhvm/hhvm:3.30-lts-latest
-        with:
-          args: hhvm composer.phar install
-      - name: Run hhvm vendor/bin/phpunit
-        uses: docker://hhvm/hhvm:3.30-lts-latest
-        with:
-          args: hhvm vendor/bin/phpunit

README.md

@@ -424,8 +424,7 @@ composer require react/dns:^3@dev
 See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
 
 This project aims to run on any platform and thus does not require any PHP
-extensions and supports running on legacy PHP 5.3 through current PHP 8+ and
-HHVM.
+extensions and supports running on PHP 7.1 through current PHP 8+.
 It's *highly recommended to use the latest supported PHP version* for this project.
 
 ## Tests

composer.json

@@ -26,13 +26,13 @@
         }
     ],
     "require": {
-        "php": ">=5.3.0",
+        "php": ">=7.1",
         "react/cache": "^1.0 || ^0.6 || ^0.5",
         "react/event-loop": "^1.2",
         "react/promise": "^3.0 || ^2.7 || ^1.2.1"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.6 || ^5.7 || ^4.8.36",
+        "phpunit/phpunit": "^9.6 || ^5.7",
         "react/async": "^4 || ^3 || ^2",
         "react/promise-timer": "^1.9"
     },

phpunit.xml.legacy

@@ -2,7 +2,7 @@
 
 <!-- PHPUnit configuration file with old format for legacy PHPUnit -->
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/4.8/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/5.7/phpunit.xsd"
          bootstrap="vendor/autoload.php"
          colors="true">
     <testsuites>

src/Model/Message.php

@@ -126,23 +126,13 @@ public static function createResponseWithAnswersForQuery(Query $query, array $an
      * DNS response messages can not guess the message ID to avoid possible
      * cache poisoning attacks.
      *
-     * The `random_int()` function is only available on PHP 7+ or when
-     * https://github.com/paragonie/random_compat is installed. As such, using
-     * the latest supported PHP version is highly recommended. This currently
-     * falls back to a less secure random number generator on older PHP versions
-     * in the hope that this system is properly protected against outside
-     * attackers, for example by using one of the common local DNS proxy stubs.
-     *
      * @return int
      * @see self::getId()
      * @codeCoverageIgnore
      */
     private static function generateId()
     {
-        if (function_exists('random_int')) {
-            return random_int(0, 0xffff);
-        }
-        return mt_rand(0, 0xffff);
+        return random_int(0, 0xffff);
     }
 
     /**

tests/FunctionalResolverTest.php

@@ -123,9 +123,6 @@ public function testResolveInvalidRejects()
 
     public function testResolveCancelledRejectsImmediately()
     {
-        // max_nesting_level was set to 100 for PHP Versions < 5.4 which resulted in failing test for legacy PHP
-        ini_set('xdebug.max_nesting_level', 256);
-
         $promise = $this->resolver->resolve('google.com');
         $promise->cancel();
 

tests/Query/TcpTransportExecutorTest.php

@@ -117,10 +117,6 @@ public function testQueryRejectsIfMessageExceedsMaximumMessageSize()
 
     public function testQueryRejectsIfServerConnectionFails()
     {
-        if (defined('HHVM_VERSION')) {
-            $this->markTestSkipped('HHVM reports different error message for invalid addresses');
-        }
-
         $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
         $loop->expects($this->never())->method('addWriteStream');
 
@@ -403,11 +399,11 @@ public function testQueryRejectsWhenClientKeepsSendingWhenServerClosesSocketWith
         restore_error_handler();
         $this->assertNull($error);
 
-        // expect EPIPE (Broken pipe), except for macOS kernel race condition or legacy HHVM
+        // expect EPIPE (Broken pipe), except for macOS kernel race condition
         $this->setExpectedException(
             'RuntimeException',
             'Unable to send query to DNS server tcp://' . $address . ' (',
-            defined('SOCKET_EPIPE') && !defined('HHVM_VERSION') ? (PHP_OS !== 'Darwin' || $writePending ? SOCKET_EPIPE : SOCKET_EPROTOTYPE) : null
+            defined('SOCKET_EPIPE') ? (PHP_OS !== 'Darwin' || $writePending ? SOCKET_EPIPE : SOCKET_EPROTOTYPE) : null
         );
         throw $exception;
     }