Remove support for async extension

Author: joelwurtz

.travis.yml

@@ -7,9 +7,10 @@ cache:
         - $HOME/.composer/cache
 
 php:
-    - 7.1
     - 7.2
     - 7.3
+    - 7.4
+    - 8.0
 
 env:
     global:
@@ -26,14 +27,9 @@ matrix:
           env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest" COVERAGE=true TEST_COMMAND="composer test-ci"
         - php: 7.2
           env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest"
-        - php: 7.3
-          env: USE_ASYNC=true
 
 before_install:
     - travis_retry composer self-update
-    - if [[ "$USE_ASYNC" = true ]]; then git clone https://github.com/concurrent-php/ext-async.git /tmp/async; fi
-    - if [[ "$USE_ASYNC" = true ]]; then cd /tmp/async && phpize && ./configure && sudo make install; fi
-    - if [[ "$USE_ASYNC" = true ]]; then echo "extension = async.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini && php -m && cd $TRAVIS_BUILD_DIR; fi
 
 install:
     - travis_retry composer update ${COMPOSER_FLAGS} --prefer-source --no-interaction --ignore-platform-reqs

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Change Log
 
-## 2.0.0 (unreleased)
+## 2.0.0
 
  * Remove response and stream factory, use direct implementation of nyholm/psr7
  * Async support with ext-async extension: see https://github.com/concurrent-php/ext-async
@@ -20,7 +20,7 @@
    * `ConnectionException`
    * `InvalidRequestException`
    * `SSLConnectionException`
- 
+
 ## 1.2.0
 
  * Dropped PHP 5.4 support

composer.json

@@ -23,7 +23,8 @@
         "php-http/client-common": "^2.0"
     },
     "provide": {
-        "php-http/client-implementation": "1.0"
+        "php-http/client-implementation": "1.0",
+        "psr/http-client": "1.0"
     },
     "autoload": {
         "psr-4": {

src/Client.php

@@ -34,8 +34,6 @@ class Client implements HttpClient
         'ssl_method' => STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT,
     ];
 
-    private $hasAsync;
-
     /**
      * Constructor.
      *
@@ -52,8 +50,6 @@ class Client implements HttpClient
      */
     public function __construct($config1 = [], $config2 = null, array $config = [])
     {
-        $this->hasAsync = PHP_VERSION_ID >= 70300 && \extension_loaded('async');
-
         if (\is_array($config1)) {
             $this->config = $this->configure($config1);
 
@@ -191,10 +187,6 @@ private function determineRemoteFromRequest(RequestInterface $request)
             $endpoint = $request->getHeaderLine('Host');
         }
 
-        if ($this->hasAsync) {
-            return sprintf('async-tcp://%s', $endpoint);
-        }
-
         return sprintf('tcp://%s', $endpoint);
     }
 }