[1.x] Support PSR-7 v2 along side v1

composer.json

@@ -29,25 +29,28 @@
         "php": ">=5.3.0",
         "evenement/evenement": "^3.0 || ^2.0 || ^1.0",
         "fig/http-message-util": "^1.1",
-        "psr/http-message": "^1.0",
+        "psr/http-message": "^2.0 || ^1.0",
         "react/event-loop": "^1.2",
         "react/promise": "^3.2 || ^2.3 || ^1.2.1",
         "react/socket": "^1.16",
         "react/stream": "^1.4"
     },
     "require-dev": {
-        "clue/http-proxy-react": "^1.8",
+        "clue/http-proxy-react": "^1.10",
         "clue/reactphp-ssh-proxy": "^1.4",
         "clue/socks-react": "^1.4",
-        "phpunit/phpunit": "^9.6 || ^5.7 || ^4.8.36",
+        "phpunit/phpunit": "^9.6 || ^8.5 || ^5.7 || ^4.8.36",
         "react/async": "^4.2 || ^3 || ^2",
         "react/promise-stream": "^1.4",
         "react/promise-timer": "^1.11"
     },
     "autoload": {
         "psr-4": {
             "React\\Http\\": "src/"
-        }
+        },
+        "exclude-from-classmap": [
+            "src/**.v2.php"
+        ]
     },
     "autoload-dev": {
         "psr-4": {

src/Io/AbstractMessage.php

@@ -5,11 +5,19 @@
 use Psr\Http\Message\MessageInterface;
 use Psr\Http\Message\StreamInterface;
 
+
+if (\PHP_VERSION_ID >= 70000 && \call_user_func(array(new \ReflectionMethod('\Psr\Http\Message\MessageInterface', 'getProtocolVersion'), 'hasReturnType'))) {
+    // load class for psr/http-message v2 using native types like `getProtocolVersion(): string`
+    require __DIR__ . '/AbstractMessage.v2.php';
+} else {
+    // fall back to class without native types
+
 /**
- * [Internal] Abstract HTTP message base class (PSR-7)
+ * [Internal] Abstract HTTP message base class (PSR-7 v1)
  *
  * @internal
  * @see MessageInterface
+ * @see AbstractMessage.v2.php (PSR-7 v2)
  */
 abstract class AbstractMessage implements MessageInterface
 {
@@ -170,3 +178,4 @@ public function withBody(StreamInterface $body)
         return $message;
     }
 }
+}

src/Io/AbstractMessage.v2.php

@@ -0,0 +1,173 @@
+<?php
+
+namespace React\Http\Io;
+
+use Psr\Http\Message\MessageInterface;
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * [Internal] Abstract HTTP message base class (PSR-7 v2)
+ *
+ * @internal
+ * @see MessageInterface
+ * @see AbstractMessage.php (PSR-7 v1)
+ */
+abstract class AbstractMessage implements MessageInterface
+{
+    /**
+     * [Internal] Regex used to match all request header fields into an array, thanks to @kelunik for checking the HTTP specs and coming up with this regex
+     *
+     * @internal
+     * @var string
+     */
+    const REGEX_HEADERS = '/^([^()<>@,;:\\\"\/\[\]?={}\x00-\x20\x7F]++):[\x20\x09]*+((?:[\x20\x09]*+[\x21-\x7E\x80-\xFF]++)*+)[\x20\x09]*+[\r]?+\n/m';
+
+    /** @var array<string,string[]> */
+    private $headers = array();
+
+    /** @var array<string,string> */
+    private $headerNamesLowerCase = array();
+
+    /** @var string */
+    private $protocolVersion;
+
+    /** @var StreamInterface */
+    private $body;
+
+    /**
+     * @param string $protocolVersion
+     * @param array<string,string|string[]> $headers
+     * @param StreamInterface $body
+     */
+    protected function __construct($protocolVersion, array $headers, StreamInterface $body)
+    {
+        foreach ($headers as $name => $value) {
+            if ($value !== array()) {
+                if (\is_array($value)) {
+                    foreach ($value as &$one) {
+                        $one = (string) $one;
+                    }
+                } else {
+                    $value = array((string) $value);
+                }
+
+                $lower = \strtolower($name);
+                if (isset($this->headerNamesLowerCase[$lower])) {
+                    $value = \array_merge($this->headers[$this->headerNamesLowerCase[$lower]], $value);
+                    unset($this->headers[$this->headerNamesLowerCase[$lower]]);
+                }
+
+                $this->headers[$name] = $value;
+                $this->headerNamesLowerCase[$lower] = $name;
+            }
+        }
+
+        $this->protocolVersion = (string) $protocolVersion;
+        $this->body = $body;
+    }
+
+    public function getProtocolVersion(): string
+    {
+        return $this->protocolVersion;
+    }
+
+    public function withProtocolVersion(string $version): MessageInterface
+    {
+        if ((string) $version === $this->protocolVersion) {
+            return $this;
+        }
+
+        $message = clone $this;
+        $message->protocolVersion = (string) $version;
+
+        return $message;
+    }
+
+    public function getHeaders(): array
+    {
+        return $this->headers;
+    }
+
+    public function hasHeader(string $name): bool
+    {
+        return isset($this->headerNamesLowerCase[\strtolower($name)]);
+    }
+
+    public function getHeader(string $name): array
+    {
+        $lower = \strtolower($name);
+        return isset($this->headerNamesLowerCase[$lower]) ? $this->headers[$this->headerNamesLowerCase[$lower]] : array();
+    }
+
+    public function getHeaderLine(string $name): string
+    {
+        return \implode(', ', $this->getHeader($name));
+    }
+
+    public function withHeader(string $name, $value): MessageInterface
+    {
+        if ($value === array()) {
+            return $this->withoutHeader($name);
+        } elseif (\is_array($value)) {
+            foreach ($value as &$one) {
+                $one = (string) $one;
+            }
+        } else {
+            $value = array((string) $value);
+        }
+
+        $lower = \strtolower($name);
+        if (isset($this->headerNamesLowerCase[$lower]) && $this->headerNamesLowerCase[$lower] === (string) $name && $this->headers[$this->headerNamesLowerCase[$lower]] === $value) {
+            return $this;
+        }
+
+        $message = clone $this;
+        if (isset($message->headerNamesLowerCase[$lower])) {
+            unset($message->headers[$message->headerNamesLowerCase[$lower]]);
+        }
+
+        $message->headers[$name] = $value;
+        $message->headerNamesLowerCase[$lower] = $name;
+
+        return $message;
+    }
+
+    public function withAddedHeader(string $name, $value): MessageInterface
+    {
+        if ($value === array()) {
+            return $this;
+        }
+
+        return $this->withHeader($name, \array_merge($this->getHeader($name), \is_array($value) ? $value : array($value)));
+    }
+
+    public function withoutHeader(string $name): MessageInterface
+    {
+        $lower = \strtolower($name);
+        if (!isset($this->headerNamesLowerCase[$lower])) {
+            return $this;
+        }
+
+        $message = clone $this;
+        unset($message->headers[$message->headerNamesLowerCase[$lower]], $message->headerNamesLowerCase[$lower]);
+
+        return $message;
+    }
+
+    public function getBody(): StreamInterface
+    {
+        return $this->body;
+    }
+
+    public function withBody(StreamInterface $body): MessageInterface
+    {
+        if ($body === $this->body) {
+            return $this;
+        }
+
+        $message = clone $this;
+        $message->body = $body;
+
+        return $message;
+    }
+}

src/Io/AbstractRequest.php

@@ -7,11 +7,18 @@
 use Psr\Http\Message\UriInterface;
 use React\Http\Message\Uri;
 
+if (\PHP_VERSION_ID >= 70000 && \call_user_func(array(new \ReflectionMethod('\Psr\Http\Message\RequestInterface', 'getRequestTarget'), 'hasReturnType'))) {
+    // load class for psr/http-message v2 using native types like `getRequestTarget(): string`
+    require __DIR__ . '/AbstractRequest.v2.php';
+} else {
+    // fall back to class without native types
+
 /**
- * [Internal] Abstract HTTP request base class (PSR-7)
+ * [Internal] Abstract HTTP request base class (PSR-7 v1)
  *
  * @internal
  * @see RequestInterface
+ * @see AbstractRequest.v2.php (PSR-7 v2)
  */
 abstract class AbstractRequest extends AbstractMessage implements RequestInterface
 {
@@ -154,3 +161,4 @@ public function withUri(UriInterface $uri, $preserveHost = false)
         return $request;
     }
 }
+}