8 files changed, 1422 insertions, 1422 deletions
diff --git a/vendor/minishlink/web-push/src/Encryption.php b/vendor/minishlink/web-push/src/Encryption.php
index e9fe1ac..c867265 100644
--- a/vendor/minishlink/web-push/src/Encryption.php
+++ b/vendor/minishlink/web-push/src/Encryption.php
@@ -1,321 +1,321 @@
-<?php
-
-declare(strict_types=1);
-
-/*
- * This file is part of the WebPush library.
- *
- * (c) Louis Lagrange <lagrange.louis@gmail.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Minishlink\WebPush;
-
-use Base64Url\Base64Url;
-use Jose\Component\Core\Util\Ecc\NistCurve;
-use Jose\Component\Core\Util\Ecc\Point;
-use Jose\Component\Core\Util\Ecc\PrivateKey;
-use Jose\Component\Core\Util\Ecc\PublicKey;
-
-class Encryption
-{
-    public const MAX_PAYLOAD_LENGTH = 4078;
-    public const MAX_COMPATIBILITY_PAYLOAD_LENGTH = 3052;
-
-    /**
-     * @param string $payload
-     * @param int $maxLengthToPad
-     * @param string $contentEncoding
-     * @return string padded payload (plaintext)
-     * @throws \ErrorException
-     */
-    public static function padPayload(string $payload, int $maxLengthToPad, string $contentEncoding): string
-    {
-        $payloadLen = Utils::safeStrlen($payload);
-        $padLen = $maxLengthToPad ? $maxLengthToPad - $payloadLen : 0;
-
-        if ($contentEncoding === "aesgcm") {
-            return pack('n*', $padLen).str_pad($payload, $padLen + $payloadLen, chr(0), STR_PAD_LEFT);
-        } elseif ($contentEncoding === "aes128gcm") {
-            return str_pad($payload.chr(2), $padLen + $payloadLen, chr(0), STR_PAD_RIGHT);
-        } else {
-            throw new \ErrorException("This content encoding is not supported");
-        }
-    }
-
-    /**
-     * @param string $payload With padding
-     * @param string $userPublicKey Base 64 encoded (MIME or URL-safe)
-     * @param string $userAuthToken Base 64 encoded (MIME or URL-safe)
-     * @param string $contentEncoding
-     * @return array
-     *
-     * @throws \ErrorException
-     */
-    public static function encrypt(string $payload, string $userPublicKey, string $userAuthToken, string $contentEncoding): array
-    {
-        return self::deterministicEncrypt(
-            $payload,
-            $userPublicKey,
-            $userAuthToken,
-            $contentEncoding,
-            self::createLocalKeyObject(),
-            random_bytes(16)
-        );
-    }
-
-    /**
-     * @param string $payload
-     * @param string $userPublicKey
-     * @param string $userAuthToken
-     * @param string $contentEncoding
-     * @param array $localKeyObject
-     * @param string $salt
-     * @return array
-     *
-     * @throws \ErrorException
-     */
-    public static function deterministicEncrypt(string $payload, string $userPublicKey, string $userAuthToken, string $contentEncoding, array $localKeyObject, string $salt): array
-    {
-        $userPublicKey = Base64Url::decode($userPublicKey);
-        $userAuthToken = Base64Url::decode($userAuthToken);
-
-        $curve = NistCurve::curve256();
-
-        // get local key pair
-        list($localPublicKeyObject, $localPrivateKeyObject) = $localKeyObject;
-        $localPublicKey = hex2bin(Utils::serializePublicKey($localPublicKeyObject));
-        if (!$localPublicKey) {
-            throw new \ErrorException('Failed to convert local public key from hexadecimal to binary');
-        }
-
-        // get user public key object
-        [$userPublicKeyObjectX, $userPublicKeyObjectY] = Utils::unserializePublicKey($userPublicKey);
-        $userPublicKeyObject = $curve->getPublicKeyFrom(
-            gmp_init(bin2hex($userPublicKeyObjectX), 16),
-            gmp_init(bin2hex($userPublicKeyObjectY), 16)
-        );
-
-        // get shared secret from user public key and local private key
-        $sharedSecret = $curve->mul($userPublicKeyObject->getPoint(), $localPrivateKeyObject->getSecret())->getX();
-        $sharedSecret = hex2bin(str_pad(gmp_strval($sharedSecret, 16), 64, '0', STR_PAD_LEFT));
-        if (!$sharedSecret) {
-            throw new \ErrorException('Failed to convert shared secret from hexadecimal to binary');
-        }
-
-        // section 4.3
-        $ikm = self::getIKM($userAuthToken, $userPublicKey, $localPublicKey, $sharedSecret, $contentEncoding);
-
-        // section 4.2
-        $context = self::createContext($userPublicKey, $localPublicKey, $contentEncoding);
-
-        // derive the Content Encryption Key
-        $contentEncryptionKeyInfo = self::createInfo($contentEncoding, $context, $contentEncoding);
-        $contentEncryptionKey = self::hkdf($salt, $ikm, $contentEncryptionKeyInfo, 16);
-
-        // section 3.3, derive the nonce
-        $nonceInfo = self::createInfo('nonce', $context, $contentEncoding);
-        $nonce = self::hkdf($salt, $ikm, $nonceInfo, 12);
-
-        // encrypt
-        // "The additional data passed to each invocation of AEAD_AES_128_GCM is a zero-length octet sequence."
-        $tag = '';
-        $encryptedText = openssl_encrypt($payload, 'aes-128-gcm', $contentEncryptionKey, OPENSSL_RAW_DATA, $nonce, $tag);
-
-        // return values in url safe base64
-        return [
-            'localPublicKey' => $localPublicKey,
-            'salt' => $salt,
-            'cipherText' => $encryptedText.$tag,
-        ];
-    }
-
-    public static function getContentCodingHeader($salt, $localPublicKey, $contentEncoding): string
-    {
-        if ($contentEncoding === "aes128gcm") {
-            return $salt
-                .pack('N*', 4096)
-                .pack('C*', Utils::safeStrlen($localPublicKey))
-                .$localPublicKey;
-        }
-
-        return "";
-    }
-
-    /**
-     * HMAC-based Extract-and-Expand Key Derivation Function (HKDF).
-     *
-     * This is used to derive a secure encryption key from a mostly-secure shared
-     * secret.
-     *
-     * This is a partial implementation of HKDF tailored to our specific purposes.
-     * In particular, for us the value of N will always be 1, and thus T always
-     * equals HMAC-Hash(PRK, info | 0x01).
-     *
-     * See {@link https://www.rfc-editor.org/rfc/rfc5869.txt}
-     * From {@link https://github.com/GoogleChrome/push-encryption-node/blob/master/src/encrypt.js}
-     *
-     * @param string $salt   A non-secret random value
-     * @param string $ikm    Input keying material
-     * @param string $info   Application-specific context
-     * @param int    $length The length (in bytes) of the required output key
-     *
-     * @return string
-     */
-    private static function hkdf(string $salt, string $ikm, string $info, int $length): string
-    {
-        // extract
-        $prk = hash_hmac('sha256', $ikm, $salt, true);
-
-        // expand
-        return mb_substr(hash_hmac('sha256', $info.chr(1), $prk, true), 0, $length, '8bit');
-    }
-
-    /**
-     * Creates a context for deriving encryption parameters.
-     * See section 4.2 of
-     * {@link https://tools.ietf.org/html/draft-ietf-httpbis-encryption-encoding-00}
-     * From {@link https://github.com/GoogleChrome/push-encryption-node/blob/master/src/encrypt.js}.
-     *
-     * @param string $clientPublicKey The client's public key
-     * @param string $serverPublicKey Our public key
-     *
-     * @return null|string
-     *
-     * @throws \ErrorException
-     */
-    private static function createContext(string $clientPublicKey, string $serverPublicKey, $contentEncoding): ?string
-    {
-        if ($contentEncoding === "aes128gcm") {
-            return null;
-        }
-
-        if (Utils::safeStrlen($clientPublicKey) !== 65) {
-            throw new \ErrorException('Invalid client public key length');
-        }
-
-        // This one should never happen, because it's our code that generates the key
-        if (Utils::safeStrlen($serverPublicKey) !== 65) {
-            throw new \ErrorException('Invalid server public key length');
-        }
-
-        $len = chr(0).'A'; // 65 as Uint16BE
-
-        return chr(0).$len.$clientPublicKey.$len.$serverPublicKey;
-    }
-
-    /**
-     * Returns an info record. See sections 3.2 and 3.3 of
-     * {@link https://tools.ietf.org/html/draft-ietf-httpbis-encryption-encoding-00}
-     * From {@link https://github.com/GoogleChrome/push-encryption-node/blob/master/src/encrypt.js}.
-     *
-     * @param string $type The type of the info record
-     * @param string|null $context The context for the record
-     * @param string $contentEncoding
-     * @return string
-     *
-     * @throws \ErrorException
-     */
-    private static function createInfo(string $type, ?string $context, string $contentEncoding): string
-    {
-        if ($contentEncoding === "aesgcm") {
-            if (!$context) {
-                throw new \ErrorException('Context must exist');
-            }
-
-            if (Utils::safeStrlen($context) !== 135) {
-                throw new \ErrorException('Context argument has invalid size');
-            }
-
-            return 'Content-Encoding: '.$type.chr(0).'P-256'.$context;
-        } elseif ($contentEncoding === "aes128gcm") {
-            return 'Content-Encoding: '.$type.chr(0);
-        }
-
-        throw new \ErrorException('This content encoding is not supported.');
-    }
-
-    /**
-     * @return array
-     */
-    private static function createLocalKeyObject(): array
-    {
-        try {
-            return self::createLocalKeyObjectUsingOpenSSL();
-        } catch (\Exception $e) {
-            return self::createLocalKeyObjectUsingPurePhpMethod();
-        }
-    }
-
-    /**
-     * @return array
-     */
-    private static function createLocalKeyObjectUsingPurePhpMethod(): array
-    {
-        $curve = NistCurve::curve256();
-        $privateKey = $curve->createPrivateKey();
-
-        return [
-            $curve->createPublicKey($privateKey),
-            $privateKey,
-        ];
-    }
-
-    /**
-     * @return array
-     */
-    private static function createLocalKeyObjectUsingOpenSSL(): array
-    {
-        $keyResource = openssl_pkey_new([
-            'curve_name'       => 'prime256v1',
-            'private_key_type' => OPENSSL_KEYTYPE_EC,
-        ]);
-
-        if (!$keyResource) {
-            throw new \RuntimeException('Unable to create the key');
-        }
-
-        $details = openssl_pkey_get_details($keyResource);
-        openssl_pkey_free($keyResource);
-
-        if (!$details) {
-            throw new \RuntimeException('Unable to get the key details');
-        }
-
-        return [
-            PublicKey::create(Point::create(
-                gmp_init(bin2hex($details['ec']['x']), 16),
-                gmp_init(bin2hex($details['ec']['y']), 16)
-            )),
-            PrivateKey::create(gmp_init(bin2hex($details['ec']['d']), 16))
-        ];
-    }
-
-    /**
-     * @param string $userAuthToken
-     * @param string $userPublicKey
-     * @param string $localPublicKey
-     * @param string $sharedSecret
-     * @param string $contentEncoding
-     * @return string
-     * @throws \ErrorException
-     */
-    private static function getIKM(string $userAuthToken, string $userPublicKey, string $localPublicKey, string $sharedSecret, string $contentEncoding): string
-    {
-        if (!empty($userAuthToken)) {
-            if ($contentEncoding === "aesgcm") {
-                $info = 'Content-Encoding: auth'.chr(0);
-            } elseif ($contentEncoding === "aes128gcm") {
-                $info = "WebPush: info".chr(0).$userPublicKey.$localPublicKey;
-            } else {
-                throw new \ErrorException("This content encoding is not supported");
-            }
-
-            return self::hkdf($userAuthToken, $sharedSecret, $info, 32);
-        }
-
-        return $sharedSecret;
-    }
-}
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the WebPush library.
+ *
+ * (c) Louis Lagrange <lagrange.louis@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Minishlink\WebPush;
+
+use Base64Url\Base64Url;
+use Jose\Component\Core\Util\Ecc\NistCurve;
+use Jose\Component\Core\Util\Ecc\Point;
+use Jose\Component\Core\Util\Ecc\PrivateKey;
+use Jose\Component\Core\Util\Ecc\PublicKey;
+
+class Encryption
+{
+    public const MAX_PAYLOAD_LENGTH = 4078;
+    public const MAX_COMPATIBILITY_PAYLOAD_LENGTH = 3052;
+
+    /**
+     * @param string $payload
+     * @param int $maxLengthToPad
+     * @param string $contentEncoding
+     * @return string padded payload (plaintext)
+     * @throws \ErrorException
+     */
+    public static function padPayload(string $payload, int $maxLengthToPad, string $contentEncoding): string
+    {
+        $payloadLen = Utils::safeStrlen($payload);
+        $padLen = $maxLengthToPad ? $maxLengthToPad - $payloadLen : 0;
+
+        if ($contentEncoding === "aesgcm") {
+            return pack('n*', $padLen).str_pad($payload, $padLen + $payloadLen, chr(0), STR_PAD_LEFT);
+        } elseif ($contentEncoding === "aes128gcm") {
+            return str_pad($payload.chr(2), $padLen + $payloadLen, chr(0), STR_PAD_RIGHT);
+        } else {
+            throw new \ErrorException("This content encoding is not supported");
+        }
+    }
+
+    /**
+     * @param string $payload With padding
+     * @param string $userPublicKey Base 64 encoded (MIME or URL-safe)
+     * @param string $userAuthToken Base 64 encoded (MIME or URL-safe)
+     * @param string $contentEncoding
+     * @return array
+     *
+     * @throws \ErrorException
+     */
+    public static function encrypt(string $payload, string $userPublicKey, string $userAuthToken, string $contentEncoding): array
+    {
+        return self::deterministicEncrypt(
+            $payload,
+            $userPublicKey,
+            $userAuthToken,
+            $contentEncoding,
+            self::createLocalKeyObject(),
+            random_bytes(16)
+        );
+    }
+
+    /**
+     * @param string $payload
+     * @param string $userPublicKey
+     * @param string $userAuthToken
+     * @param string $contentEncoding
+     * @param array $localKeyObject
+     * @param string $salt
+     * @return array
+     *
+     * @throws \ErrorException
+     */
+    public static function deterministicEncrypt(string $payload, string $userPublicKey, string $userAuthToken, string $contentEncoding, array $localKeyObject, string $salt): array
+    {
+        $userPublicKey = Base64Url::decode($userPublicKey);
+        $userAuthToken = Base64Url::decode($userAuthToken);
+
+        $curve = NistCurve::curve256();
+
+        // get local key pair
+        list($localPublicKeyObject, $localPrivateKeyObject) = $localKeyObject;
+        $localPublicKey = hex2bin(Utils::serializePublicKey($localPublicKeyObject));
+        if (!$localPublicKey) {
+            throw new \ErrorException('Failed to convert local public key from hexadecimal to binary');
+        }
+
+        // get user public key object
+        [$userPublicKeyObjectX, $userPublicKeyObjectY] = Utils::unserializePublicKey($userPublicKey);
+        $userPublicKeyObject = $curve->getPublicKeyFrom(
+            gmp_init(bin2hex($userPublicKeyObjectX), 16),
+            gmp_init(bin2hex($userPublicKeyObjectY), 16)
+        );
+
+        // get shared secret from user public key and local private key
+        $sharedSecret = $curve->mul($userPublicKeyObject->getPoint(), $localPrivateKeyObject->getSecret())->getX();
+        $sharedSecret = hex2bin(str_pad(gmp_strval($sharedSecret, 16), 64, '0', STR_PAD_LEFT));
+        if (!$sharedSecret) {
+            throw new \ErrorException('Failed to convert shared secret from hexadecimal to binary');
+        }
+
+        // section 4.3
+        $ikm = self::getIKM($userAuthToken, $userPublicKey, $localPublicKey, $sharedSecret, $contentEncoding);
+
+        // section 4.2
+        $context = self::createContext($userPublicKey, $localPublicKey, $contentEncoding);
+
+        // derive the Content Encryption Key
+        $contentEncryptionKeyInfo = self::createInfo($contentEncoding, $context, $contentEncoding);
+        $contentEncryptionKey = self::hkdf($salt, $ikm, $contentEncryptionKeyInfo, 16);
+
+        // section 3.3, derive the nonce
+        $nonceInfo = self::createInfo('nonce', $context, $contentEncoding);
+        $nonce = self::hkdf($salt, $ikm, $nonceInfo, 12);
+
+        // encrypt
+        // "The additional data passed to each invocation of AEAD_AES_128_GCM is a zero-length octet sequence."
+        $tag = '';
+        $encryptedText = openssl_encrypt($payload, 'aes-128-gcm', $contentEncryptionKey, OPENSSL_RAW_DATA, $nonce, $tag);
+
+        // return values in url safe base64
+        return [
+            'localPublicKey' => $localPublicKey,
+            'salt' => $salt,
+            'cipherText' => $encryptedText.$tag,
+        ];
+    }
+
+    public static function getContentCodingHeader($salt, $localPublicKey, $contentEncoding): string
+    {
+        if ($contentEncoding === "aes128gcm") {
+            return $salt
+                .pack('N*', 4096)
+                .pack('C*', Utils::safeStrlen($localPublicKey))
+                .$localPublicKey;
+        }
+
+        return "";
+    }
+
+    /**
+     * HMAC-based Extract-and-Expand Key Derivation Function (HKDF).
+     *
+     * This is used to derive a secure encryption key from a mostly-secure shared
+     * secret.
+     *
+     * This is a partial implementation of HKDF tailored to our specific purposes.
+     * In particular, for us the value of N will always be 1, and thus T always
+     * equals HMAC-Hash(PRK, info | 0x01).
+     *
+     * See {@link https://www.rfc-editor.org/rfc/rfc5869.txt}
+     * From {@link https://github.com/GoogleChrome/push-encryption-node/blob/master/src/encrypt.js}
+     *
+     * @param string $salt   A non-secret random value
+     * @param string $ikm    Input keying material
+     * @param string $info   Application-specific context
+     * @param int    $length The length (in bytes) of the required output key
+     *
+     * @return string
+     */
+    private static function hkdf(string $salt, string $ikm, string $info, int $length): string
+    {
+        // extract
+        $prk = hash_hmac('sha256', $ikm, $salt, true);
+
+        // expand
+        return mb_substr(hash_hmac('sha256', $info.chr(1), $prk, true), 0, $length, '8bit');
+    }
+
+    /**
+     * Creates a context for deriving encryption parameters.
+     * See section 4.2 of
+     * {@link https://tools.ietf.org/html/draft-ietf-httpbis-encryption-encoding-00}
+     * From {@link https://github.com/GoogleChrome/push-encryption-node/blob/master/src/encrypt.js}.
+     *
+     * @param string $clientPublicKey The client's public key
+     * @param string $serverPublicKey Our public key
+     *
+     * @return null|string
+     *
+     * @throws \ErrorException
+     */
+    private static function createContext(string $clientPublicKey, string $serverPublicKey, $contentEncoding): ?string
+    {
+        if ($contentEncoding === "aes128gcm") {
+            return null;
+        }
+
+        if (Utils::safeStrlen($clientPublicKey) !== 65) {
+            throw new \ErrorException('Invalid client public key length');
+        }
+
+        // This one should never happen, because it's our code that generates the key
+        if (Utils::safeStrlen($serverPublicKey) !== 65) {
+            throw new \ErrorException('Invalid server public key length');
+        }
+
+        $len = chr(0).'A'; // 65 as Uint16BE
+
+        return chr(0).$len.$clientPublicKey.$len.$serverPublicKey;
+    }
+
+    /**
+     * Returns an info record. See sections 3.2 and 3.3 of
+     * {@link https://tools.ietf.org/html/draft-ietf-httpbis-encryption-encoding-00}
+     * From {@link https://github.com/GoogleChrome/push-encryption-node/blob/master/src/encrypt.js}.
+     *
+     * @param string $type The type of the info record
+     * @param string|null $context The context for the record
+     * @param string $contentEncoding
+     * @return string
+     *
+     * @throws \ErrorException
+     */
+    private static function createInfo(string $type, ?string $context, string $contentEncoding): string
+    {
+        if ($contentEncoding === "aesgcm") {
+            if (!$context) {
+                throw new \ErrorException('Context must exist');
+            }
+
+            if (Utils::safeStrlen($context) !== 135) {
+                throw new \ErrorException('Context argument has invalid size');
+            }
+
+            return 'Content-Encoding: '.$type.chr(0).'P-256'.$context;
+        } elseif ($contentEncoding === "aes128gcm") {
+            return 'Content-Encoding: '.$type.chr(0);
+        }
+
+        throw new \ErrorException('This content encoding is not supported.');
+    }
+
+    /**
+     * @return array
+     */
+    private static function createLocalKeyObject(): array
+    {
+        try {
+            return self::createLocalKeyObjectUsingOpenSSL();
+        } catch (\Exception $e) {
+            return self::createLocalKeyObjectUsingPurePhpMethod();
+        }
+    }
+
+    /**
+     * @return array
+     */
+    private static function createLocalKeyObjectUsingPurePhpMethod(): array
+    {
+        $curve = NistCurve::curve256();
+        $privateKey = $curve->createPrivateKey();
+
+        return [
+            $curve->createPublicKey($privateKey),
+            $privateKey,
+        ];
+    }
+
+    /**
+     * @return array
+     */
+    private static function createLocalKeyObjectUsingOpenSSL(): array
+    {
+        $keyResource = openssl_pkey_new([
+            'curve_name'       => 'prime256v1',
+            'private_key_type' => OPENSSL_KEYTYPE_EC,
+        ]);
+
+        if (!$keyResource) {
+            throw new \RuntimeException('Unable to create the key');
+        }
+
+        $details = openssl_pkey_get_details($keyResource);
+        openssl_pkey_free($keyResource);
+
+        if (!$details) {
+            throw new \RuntimeException('Unable to get the key details');
+        }
+
+        return [
+            PublicKey::create(Point::create(
+                gmp_init(bin2hex($details['ec']['x']), 16),
+                gmp_init(bin2hex($details['ec']['y']), 16)
+            )),
+            PrivateKey::create(gmp_init(bin2hex($details['ec']['d']), 16))
+        ];
+    }
+
+    /**
+     * @param string $userAuthToken
+     * @param string $userPublicKey
+     * @param string $localPublicKey
+     * @param string $sharedSecret
+     * @param string $contentEncoding
+     * @return string
+     * @throws \ErrorException
+     */
+    private static function getIKM(string $userAuthToken, string $userPublicKey, string $localPublicKey, string $sharedSecret, string $contentEncoding): string
+    {
+        if (!empty($userAuthToken)) {
+            if ($contentEncoding === "aesgcm") {
+                $info = 'Content-Encoding: auth'.chr(0);
+            } elseif ($contentEncoding === "aes128gcm") {
+                $info = "WebPush: info".chr(0).$userPublicKey.$localPublicKey;
+            } else {
+                throw new \ErrorException("This content encoding is not supported");
+            }
+
+            return self::hkdf($userAuthToken, $sharedSecret, $info, 32);
+        }
+
+        return $sharedSecret;
+    }
+}
diff --git a/vendor/minishlink/web-push/src/MessageSentReport.php b/vendor/minishlink/web-push/src/MessageSentReport.php
index c569952..a6945e6 100644
--- a/vendor/minishlink/web-push/src/MessageSentReport.php
+++ b/vendor/minishlink/web-push/src/MessageSentReport.php
@@ -1,181 +1,181 @@
-<?php
-/**
- * @author Igor Timoshenkov [it@campoint.net]
- * @started: 03.09.2018 9:21
- */
-
-namespace Minishlink\WebPush;
-
-use Psr\Http\Message\RequestInterface;
-use Psr\Http\Message\ResponseInterface;
-
-/**
- * Standardized response from sending a message
- */
-class MessageSentReport implements \JsonSerializable
-{
-
-    /**
-     * @var boolean
-     */
-    protected $success;
-
-    /**
-     * @var RequestInterface
-     */
-    protected $request;
-
-    /**
-     * @var ResponseInterface | null
-     */
-    protected $response;
-
-    /**
-     * @var string
-     */
-    protected $reason;
-
-    /**
-     * @param RequestInterface  $request
-     * @param ResponseInterface $response
-     * @param bool              $success
-     * @param string            $reason
-     */
-    public function __construct(RequestInterface $request, ?ResponseInterface $response = null, bool $success = true, $reason = 'OK')
-    {
-        $this->request  = $request;
-        $this->response = $response;
-        $this->success  = $success;
-        $this->reason   = $reason;
-    }
-
-    /**
-     * @return bool
-     */
-    public function isSuccess(): bool
-    {
-        return $this->success;
-    }
-
-    /**
-     * @param bool $success
-     *
-     * @return MessageSentReport
-     */
-    public function setSuccess(bool $success): MessageSentReport
-    {
-        $this->success = $success;
-        return $this;
-    }
-
-    /**
-     * @return RequestInterface
-     */
-    public function getRequest(): RequestInterface
-    {
-        return $this->request;
-    }
-
-    /**
-     * @param RequestInterface $request
-     *
-     * @return MessageSentReport
-     */
-    public function setRequest(RequestInterface $request): MessageSentReport
-    {
-        $this->request = $request;
-        return $this;
-    }
-
-    /**
-     * @return ResponseInterface | null
-     */
-    public function getResponse(): ?ResponseInterface
-    {
-        return $this->response;
-    }
-
-    /**
-     * @param ResponseInterface $response
-     *
-     * @return MessageSentReport
-     */
-    public function setResponse(ResponseInterface $response): MessageSentReport
-    {
-        $this->response = $response;
-        return $this;
-    }
-
-    /**
-     * @return string
-     */
-    public function getEndpoint(): string
-    {
-        return $this->request->getUri()->__toString();
-    }
-
-    /**
-     * @return bool
-     */
-    public function isSubscriptionExpired(): bool
-    {
-        if (!$this->response) {
-            return false;
-        }
-
-        return \in_array($this->response->getStatusCode(), [404, 410], true);
-    }
-
-    /**
-     * @return string
-     */
-    public function getReason(): string
-    {
-        return $this->reason;
-    }
-
-    /**
-     * @param string $reason
-     *
-     * @return MessageSentReport
-     */
-    public function setReason(string $reason): MessageSentReport
-    {
-        $this->reason = $reason;
-        return $this;
-    }
-
-    /**
-     * @return string
-     */
-    public function getRequestPayload(): string
-    {
-        return $this->request->getBody()->getContents();
-    }
-
-    /**
-     * @return string | null
-     */
-    public function getResponseContent(): ?string
-    {
-        if (!$this->response) {
-            return null;
-        }
-
-        return $this->response->getBody()->getContents();
-    }
-
-    /**
-     * @return array|mixed
-     */
-    public function jsonSerialize()
-    {
-        return [
-            'success'  => $this->isSuccess(),
-            'expired'  => $this->isSubscriptionExpired(),
-            'reason'   => $this->reason,
-            'endpoint' => $this->getEndpoint(),
-            'payload'  => $this->request->getBody()->getContents(),
-        ];
-    }
-}
+<?php
+/**
+ * @author Igor Timoshenkov [it@campoint.net]
+ * @started: 03.09.2018 9:21
+ */
+
+namespace Minishlink\WebPush;
+
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * Standardized response from sending a message
+ */
+class MessageSentReport implements \JsonSerializable
+{
+
+    /**
+     * @var boolean
+     */
+    protected $success;
+
+    /**
+     * @var RequestInterface
+     */
+    protected $request;
+
+    /**
+     * @var ResponseInterface | null
+     */
+    protected $response;
+
+    /**
+     * @var string
+     */
+    protected $reason;
+
+    /**
+     * @param RequestInterface  $request
+     * @param ResponseInterface $response
+     * @param bool              $success
+     * @param string            $reason
+     */
+    public function __construct(RequestInterface $request, ?ResponseInterface $response = null, bool $success = true, $reason = 'OK')
+    {
+        $this->request  = $request;
+        $this->response = $response;
+        $this->success  = $success;
+        $this->reason   = $reason;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isSuccess(): bool
+    {
+        return $this->success;
+    }
+
+    /**
+     * @param bool $success
+     *
+     * @return MessageSentReport
+     */
+    public function setSuccess(bool $success): MessageSentReport
+    {
+        $this->success = $success;
+        return $this;
+    }
+
+    /**
+     * @return RequestInterface
+     */
+    public function getRequest(): RequestInterface
+    {
+        return $this->request;
+    }
+
+    /**
+     * @param RequestInterface $request
+     *
+     * @return MessageSentReport
+     */
+    public function setRequest(RequestInterface $request): MessageSentReport
+    {
+        $this->request = $request;
+        return $this;
+    }
+
+    /**
+     * @return ResponseInterface | null
+     */
+    public function getResponse(): ?ResponseInterface
+    {
+        return $this->response;
+    }
+
+    /**
+     * @param ResponseInterface $response
+     *
+     * @return MessageSentReport
+     */
+    public function setResponse(ResponseInterface $response): MessageSentReport
+    {
+        $this->response = $response;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getEndpoint(): string
+    {
+        return $this->request->getUri()->__toString();
+    }
+
+    /**
+     * @return bool
+     */
+    public function isSubscriptionExpired(): bool
+    {
+        if (!$this->response) {
+            return false;
+        }
+
+        return \in_array($this->response->getStatusCode(), [404, 410], true);
+    }
+
+    /**
+     * @return string
+     */
+    public function getReason(): string
+    {
+        return $this->reason;
+    }
+
+    /**
+     * @param string $reason
+     *
+     * @return MessageSentReport
+     */
+    public function setReason(string $reason): MessageSentReport
+    {
+        $this->reason = $reason;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getRequestPayload(): string
+    {
+        return $this->request->getBody()->getContents();
+    }
+
+    /**
+     * @return string | null
+     */
+    public function getResponseContent(): ?string
+    {
+        if (!$this->response) {
+            return null;
+        }
+
+        return $this->response->getBody()->getContents();
+    }
+
+    /**
+     * @return array|mixed
+     */
+    public function jsonSerialize()
+    {
+        return [
+            'success'  => $this->isSuccess(),
+            'expired'  => $this->isSubscriptionExpired(),
+            'reason'   => $this->reason,
+            'endpoint' => $this->getEndpoint(),
+            'payload'  => $this->request->getBody()->getContents(),
+        ];
+    }
+}
diff --git a/vendor/minishlink/web-push/src/Notification.php b/vendor/minishlink/web-push/src/Notification.php
index 1107404..15d634f 100644
--- a/vendor/minishlink/web-push/src/Notification.php
+++ b/vendor/minishlink/web-push/src/Notification.php
@@ -1,86 +1,86 @@
-<?php
-
-declare(strict_types=1);
-
-/*
- * This file is part of the WebPush library.
- *
- * (c) Louis Lagrange <lagrange.louis@gmail.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Minishlink\WebPush;
-
-class Notification
-{
-    /** @var SubscriptionInterface */
-    private $subscription;
-
-    /** @var null|string */
-    private $payload;
-
-    /** @var array Options : TTL, urgency, topic */
-    private $options;
-
-    /** @var array Auth details : GCM, VAPID */
-    private $auth;
-
-    /**
-     * Notification constructor.
-     *
-     * @param SubscriptionInterface $subscription
-     * @param null|string $payload
-     * @param array $options
-     * @param array $auth
-     */
-    public function __construct(SubscriptionInterface $subscription, ?string $payload, array $options, array $auth)
-    {
-        $this->subscription = $subscription;
-        $this->payload = $payload;
-        $this->options = $options;
-        $this->auth = $auth;
-    }
-
-    /**
-     * @return SubscriptionInterface
-     */
-    public function getSubscription(): SubscriptionInterface
-    {
-        return $this->subscription;
-    }
-
-    /**
-     * @return null|string
-     */
-    public function getPayload(): ?string
-    {
-        return $this->payload;
-    }
-
-    /**
-     * @param array $defaultOptions
-     *
-     * @return array
-     */
-    public function getOptions(array $defaultOptions = []): array
-    {
-        $options = $this->options;
-        $options['TTL'] = array_key_exists('TTL', $options) ? $options['TTL'] : $defaultOptions['TTL'];
-        $options['urgency'] = array_key_exists('urgency', $options) ? $options['urgency'] : $defaultOptions['urgency'];
-        $options['topic'] = array_key_exists('topic', $options) ? $options['topic'] : $defaultOptions['topic'];
-
-        return $options;
-    }
-
-    /**
-     * @param array $defaultAuth
-     *
-     * @return array
-     */
-    public function getAuth(array $defaultAuth): array
-    {
-        return count($this->auth) > 0 ? $this->auth : $defaultAuth;
-    }
-}
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the WebPush library.
+ *
+ * (c) Louis Lagrange <lagrange.louis@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Minishlink\WebPush;
+
+class Notification
+{
+    /** @var SubscriptionInterface */
+    private $subscription;
+
+    /** @var null|string */
+    private $payload;
+
+    /** @var array Options : TTL, urgency, topic */
+    private $options;
+
+    /** @var array Auth details : GCM, VAPID */
+    private $auth;
+
+    /**
+     * Notification constructor.
+     *
+     * @param SubscriptionInterface $subscription
+     * @param null|string $payload
+     * @param array $options
+     * @param array $auth
+     */
+    public function __construct(SubscriptionInterface $subscription, ?string $payload, array $options, array $auth)
+    {
+        $this->subscription = $subscription;
+        $this->payload = $payload;
+        $this->options = $options;
+        $this->auth = $auth;
+    }
+
+    /**
+     * @return SubscriptionInterface
+     */
+    public function getSubscription(): SubscriptionInterface
+    {
+        return $this->subscription;
+    }
+
+    /**
+     * @return null|string
+     */
+    public function getPayload(): ?string
+    {
+        return $this->payload;
+    }
+
+    /**
+     * @param array $defaultOptions
+     *
+     * @return array
+     */
+    public function getOptions(array $defaultOptions = []): array
+    {
+        $options = $this->options;
+        $options['TTL'] = array_key_exists('TTL', $options) ? $options['TTL'] : $defaultOptions['TTL'];
+        $options['urgency'] = array_key_exists('urgency', $options) ? $options['urgency'] : $defaultOptions['urgency'];
+        $options['topic'] = array_key_exists('topic', $options) ? $options['topic'] : $defaultOptions['topic'];
+
+        return $options;
+    }
+
+    /**
+     * @param array $defaultAuth
+     *
+     * @return array
+     */
+    public function getAuth(array $defaultAuth): array
+    {
+        return count($this->auth) > 0 ? $this->auth : $defaultAuth;
+    }
+}
diff --git a/vendor/minishlink/web-push/src/Subscription.php b/vendor/minishlink/web-push/src/Subscription.php
index 1232893..f570c30 100644
--- a/vendor/minishlink/web-push/src/Subscription.php
+++ b/vendor/minishlink/web-push/src/Subscription.php
@@ -1,122 +1,122 @@
-<?php
-
-declare(strict_types=1);
-
-/*
- * This file is part of the WebPush library.
- *
- * (c) Louis Lagrange <lagrange.louis@gmail.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Minishlink\WebPush;
-
-class Subscription implements SubscriptionInterface
-{
-    /** @var string */
-    private $endpoint;
-
-    /** @var null|string */
-    private $publicKey;
-
-    /** @var null|string */
-    private $authToken;
-
-    /** @var null|string */
-    private $contentEncoding;
-
-    /**
-     * Subscription constructor.
-     *
-     * @param string $endpoint
-     * @param null|string $publicKey
-     * @param null|string $authToken
-     * @param string $contentEncoding (Optional) Must be "aesgcm"
-     * @throws \ErrorException
-     */
-    public function __construct(
-        string $endpoint,
-        ?string $publicKey = null,
-        ?string $authToken = null,
-        ?string $contentEncoding = null
-    ) {
-        $this->endpoint = $endpoint;
-
-        if ($publicKey || $authToken || $contentEncoding) {
-            $supportedContentEncodings = ['aesgcm', 'aes128gcm'];
-            if ($contentEncoding && !in_array($contentEncoding, $supportedContentEncodings)) {
-                throw new \ErrorException('This content encoding ('.$contentEncoding.') is not supported.');
-            }
-
-            $this->publicKey = $publicKey;
-            $this->authToken = $authToken;
-            $this->contentEncoding = $contentEncoding ?: "aesgcm";
-        }
-    }
-
-    /**
-     * Subscription factory.
-     *
-     * @param array $associativeArray (with keys endpoint, publicKey, authToken, contentEncoding)
-     * @return self
-     * @throws \ErrorException
-     */
-    public static function create(array $associativeArray): self
-    {
-        if (array_key_exists('keys', $associativeArray) && is_array($associativeArray['keys'])) {
-            return new self(
-                $associativeArray['endpoint'],
-                $associativeArray['keys']['p256dh'] ?? null,
-                $associativeArray['keys']['auth'] ?? null,
-                $associativeArray['contentEncoding'] ?? "aesgcm"
-            );
-        }
-
-        if (array_key_exists('publicKey', $associativeArray) || array_key_exists('authToken', $associativeArray) || array_key_exists('contentEncoding', $associativeArray)) {
-            return new self(
-                $associativeArray['endpoint'],
-                $associativeArray['publicKey'] ?? null,
-                $associativeArray['authToken'] ?? null,
-                $associativeArray['contentEncoding'] ?? "aesgcm"
-            );
-        }
-
-        return new self(
-            $associativeArray['endpoint']
-        );
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    public function getEndpoint(): string
-    {
-        return $this->endpoint;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    public function getPublicKey(): ?string
-    {
-        return $this->publicKey;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    public function getAuthToken(): ?string
-    {
-        return $this->authToken;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    public function getContentEncoding(): ?string
-    {
-        return $this->contentEncoding;
-    }
-}
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the WebPush library.
+ *
+ * (c) Louis Lagrange <lagrange.louis@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Minishlink\WebPush;
+
+class Subscription implements SubscriptionInterface
+{
+    /** @var string */
+    private $endpoint;
+
+    /** @var null|string */
+    private $publicKey;
+
+    /** @var null|string */
+    private $authToken;
+
+    /** @var null|string */
+    private $contentEncoding;
+
+    /**
+     * Subscription constructor.
+     *
+     * @param string $endpoint
+     * @param null|string $publicKey
+     * @param null|string $authToken
+     * @param string $contentEncoding (Optional) Must be "aesgcm"
+     * @throws \ErrorException
+     */
+    public function __construct(
+        string $endpoint,
+        ?string $publicKey = null,
+        ?string $authToken = null,
+        ?string $contentEncoding = null
+    ) {
+        $this->endpoint = $endpoint;
+
+        if ($publicKey || $authToken || $contentEncoding) {
+            $supportedContentEncodings = ['aesgcm', 'aes128gcm'];
+            if ($contentEncoding && !in_array($contentEncoding, $supportedContentEncodings)) {
+                throw new \ErrorException('This content encoding ('.$contentEncoding.') is not supported.');
+            }
+
+            $this->publicKey = $publicKey;
+            $this->authToken = $authToken;
+            $this->contentEncoding = $contentEncoding ?: "aesgcm";
+        }
+    }
+
+    /**
+     * Subscription factory.
+     *
+     * @param array $associativeArray (with keys endpoint, publicKey, authToken, contentEncoding)
+     * @return self
+     * @throws \ErrorException
+     */
+    public static function create(array $associativeArray): self
+    {
+        if (array_key_exists('keys', $associativeArray) && is_array($associativeArray['keys'])) {
+            return new self(
+                $associativeArray['endpoint'],
+                $associativeArray['keys']['p256dh'] ?? null,
+                $associativeArray['keys']['auth'] ?? null,
+                $associativeArray['contentEncoding'] ?? "aesgcm"
+            );
+        }
+
+        if (array_key_exists('publicKey', $associativeArray) || array_key_exists('authToken', $associativeArray) || array_key_exists('contentEncoding', $associativeArray)) {
+            return new self(
+                $associativeArray['endpoint'],
+                $associativeArray['publicKey'] ?? null,
+                $associativeArray['authToken'] ?? null,
+                $associativeArray['contentEncoding'] ?? "aesgcm"
+            );
+        }
+
+        return new self(
+            $associativeArray['endpoint']
+        );
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getEndpoint(): string
+    {
+        return $this->endpoint;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getPublicKey(): ?string
+    {
+        return $this->publicKey;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getAuthToken(): ?string
+    {
+        return $this->authToken;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getContentEncoding(): ?string
+    {
+        return $this->contentEncoding;
+    }
+}
diff --git a/vendor/minishlink/web-push/src/SubscriptionInterface.php b/vendor/minishlink/web-push/src/SubscriptionInterface.php
index e3f18d6..9e09bed 100644
--- a/vendor/minishlink/web-push/src/SubscriptionInterface.php
+++ b/vendor/minishlink/web-push/src/SubscriptionInterface.php
@@ -1,40 +1,40 @@
-<?php
-
-declare(strict_types=1);
-
-/*
- * This file is part of the WebPush library.
- *
- * (c) Louis Lagrange <lagrange.louis@gmail.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Minishlink\WebPush;
-
-/**
- * @author Sergii Bondarenko <sb@firstvector.org>
- */
-interface SubscriptionInterface
-{
-    /**
-     * @return string
-     */
-    public function getEndpoint(): string;
-
-    /**
-     * @return null|string
-     */
-    public function getPublicKey(): ?string;
-
-    /**
-     * @return null|string
-     */
-    public function getAuthToken(): ?string;
-
-    /**
-     * @return null|string
-     */
-    public function getContentEncoding(): ?string;
-}
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the WebPush library.
+ *
+ * (c) Louis Lagrange <lagrange.louis@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Minishlink\WebPush;
+
+/**
+ * @author Sergii Bondarenko <sb@firstvector.org>
+ */
+interface SubscriptionInterface
+{
+    /**
+     * @return string
+     */
+    public function getEndpoint(): string;
+
+    /**
+     * @return null|string
+     */
+    public function getPublicKey(): ?string;
+
+    /**
+     * @return null|string
+     */
+    public function getAuthToken(): ?string;
+
+    /**
+     * @return null|string
+     */
+    public function getContentEncoding(): ?string;
+}
diff --git a/vendor/minishlink/web-push/src/Utils.php b/vendor/minishlink/web-push/src/Utils.php
index 30c2018..bd7f6c4 100644
--- a/vendor/minishlink/web-push/src/Utils.php
+++ b/vendor/minishlink/web-push/src/Utils.php
@@ -1,63 +1,63 @@
-<?php
-
-declare(strict_types=1);
-
-/*
- * This file is part of the WebPush library.
- *
- * (c) Louis Lagrange <lagrange.louis@gmail.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Minishlink\WebPush;
-
-use Jose\Component\Core\Util\Ecc\PublicKey;
-
-class Utils
-{
-    /**
-     * @param string $value
-     *
-     * @return int
-     */
-    public static function safeStrlen(string $value): int
-    {
-        return mb_strlen($value, '8bit');
-    }
-
-    /**
-     * @param PublicKey $publicKey
-     *
-     * @return string
-     */
-    public static function serializePublicKey(PublicKey $publicKey): string
-    {
-        $hexString = '04';
-        $hexString .= str_pad(gmp_strval($publicKey->getPoint()->getX(), 16), 64, '0', STR_PAD_LEFT);
-        $hexString .= str_pad(gmp_strval($publicKey->getPoint()->getY(), 16), 64, '0', STR_PAD_LEFT);
-
-        return $hexString;
-    }
-
-    /**
-     * @param string $data
-     *
-     * @return array
-     */
-    public static function unserializePublicKey(string $data): array
-    {
-        $data = bin2hex($data);
-        if (mb_substr($data, 0, 2, '8bit') !== '04') {
-            throw new \InvalidArgumentException('Invalid data: only uncompressed keys are supported.');
-        }
-        $data = mb_substr($data, 2, null, '8bit');
-        $dataLength = self::safeStrlen($data);
-
-        return [
-            hex2bin(mb_substr($data, 0, $dataLength / 2, '8bit')),
-            hex2bin(mb_substr($data, $dataLength / 2, null, '8bit')),
-        ];
-    }
-}
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the WebPush library.
+ *
+ * (c) Louis Lagrange <lagrange.louis@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Minishlink\WebPush;
+
+use Jose\Component\Core\Util\Ecc\PublicKey;
+
+class Utils
+{
+    /**
+     * @param string $value
+     *
+     * @return int
+     */
+    public static function safeStrlen(string $value): int
+    {
+        return mb_strlen($value, '8bit');
+    }
+
+    /**
+     * @param PublicKey $publicKey
+     *
+     * @return string
+     */
+    public static function serializePublicKey(PublicKey $publicKey): string
+    {
+        $hexString = '04';
+        $hexString .= str_pad(gmp_strval($publicKey->getPoint()->getX(), 16), 64, '0', STR_PAD_LEFT);
+        $hexString .= str_pad(gmp_strval($publicKey->getPoint()->getY(), 16), 64, '0', STR_PAD_LEFT);
+
+        return $hexString;
+    }
+
+    /**
+     * @param string $data
+     *
+     * @return array
+     */
+    public static function unserializePublicKey(string $data): array
+    {
+        $data = bin2hex($data);
+        if (mb_substr($data, 0, 2, '8bit') !== '04') {
+            throw new \InvalidArgumentException('Invalid data: only uncompressed keys are supported.');
+        }
+        $data = mb_substr($data, 2, null, '8bit');
+        $dataLength = self::safeStrlen($data);
+
+        return [
+            hex2bin(mb_substr($data, 0, $dataLength / 2, '8bit')),
+            hex2bin(mb_substr($data, $dataLength / 2, null, '8bit')),
+        ];
+    }
+}
diff --git a/vendor/minishlink/web-push/src/VAPID.php b/vendor/minishlink/web-push/src/VAPID.php
index c741ec9..e1f555f 100644
--- a/vendor/minishlink/web-push/src/VAPID.php
+++ b/vendor/minishlink/web-push/src/VAPID.php
@@ -1,197 +1,197 @@
-<?php
-
-declare(strict_types=1);
-
-/*
- * This file is part of the WebPush library.
- *
- * (c) Louis Lagrange <lagrange.louis@gmail.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Minishlink\WebPush;
-
-use Base64Url\Base64Url;
-use Jose\Component\Core\AlgorithmManager;
-use Jose\Component\Core\Converter\StandardConverter;
-use Jose\Component\Core\JWK;
-use Jose\Component\Core\Util\Ecc\NistCurve;
-use Jose\Component\Core\Util\Ecc\Point;
-use Jose\Component\Core\Util\Ecc\PublicKey;
-use Jose\Component\KeyManagement\JWKFactory;
-use Jose\Component\Signature\Algorithm\ES256;
-use Jose\Component\Signature\JWSBuilder;
-use Jose\Component\Signature\Serializer\CompactSerializer;
-
-class VAPID
-{
-    private const PUBLIC_KEY_LENGTH = 65;
-    private const PRIVATE_KEY_LENGTH = 32;
-
-    /**
-     * @param array $vapid
-     *
-     * @return array
-     *
-     * @throws \ErrorException
-     */
-    public static function validate(array $vapid): array
-    {
-        if (!isset($vapid['subject'])) {
-            throw new \ErrorException('[VAPID] You must provide a subject that is either a mailto: or a URL.');
-        }
-
-        if (isset($vapid['pemFile'])) {
-            $vapid['pem'] = file_get_contents($vapid['pemFile']);
-
-            if (!$vapid['pem']) {
-                throw new \ErrorException('Error loading PEM file.');
-            }
-        }
-
-        if (isset($vapid['pem'])) {
-            $jwk = JWKFactory::createFromKey($vapid['pem']);
-            if ($jwk->get('kty') !== 'EC' || !$jwk->has('d') || !$jwk->has('x') || !$jwk->has('y')) {
-                throw new \ErrorException('Invalid PEM data.');
-            }
-            $publicKey = PublicKey::create(Point::create(
-                gmp_init(bin2hex(Base64Url::decode($jwk->get('x'))), 16),
-                gmp_init(bin2hex(Base64Url::decode($jwk->get('y'))), 16)
-            ));
-
-            $binaryPublicKey = hex2bin(Utils::serializePublicKey($publicKey));
-            if (!$binaryPublicKey) {
-                throw new \ErrorException('Failed to convert VAPID public key from hexadecimal to binary');
-            }
-            $vapid['publicKey'] = base64_encode($binaryPublicKey);
-            $vapid['privateKey'] = base64_encode(str_pad(Base64Url::decode($jwk->get('d')), 2 * self::PRIVATE_KEY_LENGTH, '0', STR_PAD_LEFT));
-        }
-
-        if (!isset($vapid['publicKey'])) {
-            throw new \ErrorException('[VAPID] You must provide a public key.');
-        }
-
-        $publicKey = Base64Url::decode($vapid['publicKey']);
-
-        if (Utils::safeStrlen($publicKey) !== self::PUBLIC_KEY_LENGTH) {
-            throw new \ErrorException('[VAPID] Public key should be 65 bytes long when decoded.');
-        }
-
-        if (!isset($vapid['privateKey'])) {
-            throw new \ErrorException('[VAPID] You must provide a private key.');
-        }
-
-        $privateKey = Base64Url::decode($vapid['privateKey']);
-
-        if (Utils::safeStrlen($privateKey) !== self::PRIVATE_KEY_LENGTH) {
-            throw new \ErrorException('[VAPID] Private key should be 32 bytes long when decoded.');
-        }
-
-        return [
-            'subject' => $vapid['subject'],
-            'publicKey' => $publicKey,
-            'privateKey' => $privateKey,
-        ];
-    }
-
-    /**
-     * This method takes the required VAPID parameters and returns the required
-     * header to be added to a Web Push Protocol Request.
-     *
-     * @param string $audience This must be the origin of the push service
-     * @param string $subject This should be a URL or a 'mailto:' email address
-     * @param string $publicKey The decoded VAPID public key
-     * @param string $privateKey The decoded VAPID private key
-     * @param string $contentEncoding
-     * @param null|int $expiration The expiration of the VAPID JWT. (UNIX timestamp)
-     *
-     * @return array Returns an array with the 'Authorization' and 'Crypto-Key' values to be used as headers
-     * @throws \ErrorException
-     */
-    public static function getVapidHeaders(string $audience, string $subject, string $publicKey, string $privateKey, string $contentEncoding, ?int $expiration = null)
-    {
-        $expirationLimit = time() + 43200; // equal margin of error between 0 and 24h
-        if (null === $expiration || $expiration > $expirationLimit) {
-            $expiration = $expirationLimit;
-        }
-
-        $header = [
-            'typ' => 'JWT',
-            'alg' => 'ES256',
-        ];
-
-        $jwtPayload = json_encode([
-            'aud' => $audience,
-            'exp' => $expiration,
-            'sub' => $subject,
-        ], JSON_UNESCAPED_SLASHES | JSON_NUMERIC_CHECK);
-        if (!$jwtPayload) {
-            throw new \ErrorException('Failed to encode JWT payload in JSON');
-        }
-
-        list($x, $y) = Utils::unserializePublicKey($publicKey);
-        $jwk = JWK::create([
-            'kty' => 'EC',
-            'crv' => 'P-256',
-            'x' => Base64Url::encode($x),
-            'y' => Base64Url::encode($y),
-            'd' => Base64Url::encode($privateKey),
-        ]);
-
-        $jsonConverter = new StandardConverter();
-        $jwsCompactSerializer = new CompactSerializer($jsonConverter);
-        $jwsBuilder = new JWSBuilder($jsonConverter, AlgorithmManager::create([new ES256()]));
-        $jws = $jwsBuilder
-            ->create()
-            ->withPayload($jwtPayload)
-            ->addSignature($jwk, $header)
-            ->build();
-
-        $jwt = $jwsCompactSerializer->serialize($jws, 0);
-        $encodedPublicKey = Base64Url::encode($publicKey);
-
-        if ($contentEncoding === "aesgcm") {
-            return [
-                'Authorization' => 'WebPush '.$jwt,
-                'Crypto-Key' => 'p256ecdsa='.$encodedPublicKey,
-            ];
-        } elseif ($contentEncoding === 'aes128gcm') {
-            return [
-                'Authorization' => 'vapid t='.$jwt.', k='.$encodedPublicKey,
-            ];
-        }
-
-        throw new \ErrorException('This content encoding is not supported');
-    }
-
-    /**
-     * This method creates VAPID keys in case you would not be able to have a Linux bash.
-     * DO NOT create keys at each initialization! Save those keys and reuse them.
-     *
-     * @return array
-     * @throws \ErrorException
-     */
-    public static function createVapidKeys(): array
-    {
-        $curve = NistCurve::curve256();
-        $privateKey = $curve->createPrivateKey();
-        $publicKey = $curve->createPublicKey($privateKey);
-
-        $binaryPublicKey = hex2bin(Utils::serializePublicKey($publicKey));
-        if (!$binaryPublicKey) {
-            throw new \ErrorException('Failed to convert VAPID public key from hexadecimal to binary');
-        }
-
-        $binaryPrivateKey = hex2bin(str_pad(gmp_strval($privateKey->getSecret(), 16), 2 * self::PRIVATE_KEY_LENGTH, '0', STR_PAD_LEFT));
-        if (!$binaryPrivateKey) {
-            throw new \ErrorException('Failed to convert VAPID private key from hexadecimal to binary');
-        }
-
-        return [
-            'publicKey'  => Base64Url::encode($binaryPublicKey),
-            'privateKey' => Base64Url::encode($binaryPrivateKey)
-        ];
-    }
-}
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the WebPush library.
+ *
+ * (c) Louis Lagrange <lagrange.louis@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Minishlink\WebPush;
+
+use Base64Url\Base64Url;
+use Jose\Component\Core\AlgorithmManager;
+use Jose\Component\Core\Converter\StandardConverter;
+use Jose\Component\Core\JWK;
+use Jose\Component\Core\Util\Ecc\NistCurve;
+use Jose\Component\Core\Util\Ecc\Point;
+use Jose\Component\Core\Util\Ecc\PublicKey;
+use Jose\Component\KeyManagement\JWKFactory;
+use Jose\Component\Signature\Algorithm\ES256;
+use Jose\Component\Signature\JWSBuilder;
+use Jose\Component\Signature\Serializer\CompactSerializer;
+
+class VAPID
+{
+    private const PUBLIC_KEY_LENGTH = 65;
+    private const PRIVATE_KEY_LENGTH = 32;
+
+    /**
+     * @param array $vapid
+     *
+     * @return array
+     *
+     * @throws \ErrorException
+     */
+    public static function validate(array $vapid): array
+    {
+        if (!isset($vapid['subject'])) {
+            throw new \ErrorException('[VAPID] You must provide a subject that is either a mailto: or a URL.');
+        }
+
+        if (isset($vapid['pemFile'])) {
+            $vapid['pem'] = file_get_contents($vapid['pemFile']);
+
+            if (!$vapid['pem']) {
+                throw new \ErrorException('Error loading PEM file.');
+            }
+        }
+
+        if (isset($vapid['pem'])) {
+            $jwk = JWKFactory::createFromKey($vapid['pem']);
+            if ($jwk->get('kty') !== 'EC' || !$jwk->has('d') || !$jwk->has('x') || !$jwk->has('y')) {
+                throw new \ErrorException('Invalid PEM data.');
+            }
+            $publicKey = PublicKey::create(Point::create(
+                gmp_init(bin2hex(Base64Url::decode($jwk->get('x'))), 16),
+                gmp_init(bin2hex(Base64Url::decode($jwk->get('y'))), 16)
+            ));
+
+            $binaryPublicKey = hex2bin(Utils::serializePublicKey($publicKey));
+            if (!$binaryPublicKey) {
+                throw new \ErrorException('Failed to convert VAPID public key from hexadecimal to binary');
+            }
+            $vapid['publicKey'] = base64_encode($binaryPublicKey);
+            $vapid['privateKey'] = base64_encode(str_pad(Base64Url::decode($jwk->get('d')), 2 * self::PRIVATE_KEY_LENGTH, '0', STR_PAD_LEFT));
+        }
+
+        if (!isset($vapid['publicKey'])) {
+            throw new \ErrorException('[VAPID] You must provide a public key.');
+        }
+
+        $publicKey = Base64Url::decode($vapid['publicKey']);
+
+        if (Utils::safeStrlen($publicKey) !== self::PUBLIC_KEY_LENGTH) {
+            throw new \ErrorException('[VAPID] Public key should be 65 bytes long when decoded.');
+        }
+
+        if (!isset($vapid['privateKey'])) {
+            throw new \ErrorException('[VAPID] You must provide a private key.');
+        }
+
+        $privateKey = Base64Url::decode($vapid['privateKey']);
+
+        if (Utils::safeStrlen($privateKey) !== self::PRIVATE_KEY_LENGTH) {
+            throw new \ErrorException('[VAPID] Private key should be 32 bytes long when decoded.');
+        }
+
+        return [
+            'subject' => $vapid['subject'],
+            'publicKey' => $publicKey,
+            'privateKey' => $privateKey,
+        ];
+    }
+
+    /**
+     * This method takes the required VAPID parameters and returns the required
+     * header to be added to a Web Push Protocol Request.
+     *
+     * @param string $audience This must be the origin of the push service
+     * @param string $subject This should be a URL or a 'mailto:' email address
+     * @param string $publicKey The decoded VAPID public key
+     * @param string $privateKey The decoded VAPID private key
+     * @param string $contentEncoding
+     * @param null|int $expiration The expiration of the VAPID JWT. (UNIX timestamp)
+     *
+     * @return array Returns an array with the 'Authorization' and 'Crypto-Key' values to be used as headers
+     * @throws \ErrorException
+     */
+    public static function getVapidHeaders(string $audience, string $subject, string $publicKey, string $privateKey, string $contentEncoding, ?int $expiration = null)
+    {
+        $expirationLimit = time() + 43200; // equal margin of error between 0 and 24h
+        if (null === $expiration || $expiration > $expirationLimit) {
+            $expiration = $expirationLimit;
+        }
+
+        $header = [
+            'typ' => 'JWT',
+            'alg' => 'ES256',
+        ];
+
+        $jwtPayload = json_encode([
+            'aud' => $audience,
+            'exp' => $expiration,
+            'sub' => $subject,
+        ], JSON_UNESCAPED_SLASHES | JSON_NUMERIC_CHECK);
+        if (!$jwtPayload) {
+            throw new \ErrorException('Failed to encode JWT payload in JSON');
+        }
+
+        list($x, $y) = Utils::unserializePublicKey($publicKey);
+        $jwk = JWK::create([
+            'kty' => 'EC',
+            'crv' => 'P-256',
+            'x' => Base64Url::encode($x),
+            'y' => Base64Url::encode($y),
+            'd' => Base64Url::encode($privateKey),
+        ]);
+
+        $jsonConverter = new StandardConverter();
+        $jwsCompactSerializer = new CompactSerializer($jsonConverter);
+        $jwsBuilder = new JWSBuilder($jsonConverter, AlgorithmManager::create([new ES256()]));
+        $jws = $jwsBuilder
+            ->create()
+            ->withPayload($jwtPayload)
+            ->addSignature($jwk, $header)
+            ->build();
+
+        $jwt = $jwsCompactSerializer->serialize($jws, 0);
+        $encodedPublicKey = Base64Url::encode($publicKey);
+
+        if ($contentEncoding === "aesgcm") {
+            return [
+                'Authorization' => 'WebPush '.$jwt,
+                'Crypto-Key' => 'p256ecdsa='.$encodedPublicKey,
+            ];
+        } elseif ($contentEncoding === 'aes128gcm') {
+            return [
+                'Authorization' => 'vapid t='.$jwt.', k='.$encodedPublicKey,
+            ];
+        }
+
+        throw new \ErrorException('This content encoding is not supported');
+    }
+
+    /**
+     * This method creates VAPID keys in case you would not be able to have a Linux bash.
+     * DO NOT create keys at each initialization! Save those keys and reuse them.
+     *
+     * @return array
+     * @throws \ErrorException
+     */
+    public static function createVapidKeys(): array
+    {
+        $curve = NistCurve::curve256();
+        $privateKey = $curve->createPrivateKey();
+        $publicKey = $curve->createPublicKey($privateKey);
+
+        $binaryPublicKey = hex2bin(Utils::serializePublicKey($publicKey));
+        if (!$binaryPublicKey) {
+            throw new \ErrorException('Failed to convert VAPID public key from hexadecimal to binary');
+        }
+
+        $binaryPrivateKey = hex2bin(str_pad(gmp_strval($privateKey->getSecret(), 16), 2 * self::PRIVATE_KEY_LENGTH, '0', STR_PAD_LEFT));
+        if (!$binaryPrivateKey) {
+            throw new \ErrorException('Failed to convert VAPID private key from hexadecimal to binary');
+        }
+
+        return [
+            'publicKey'  => Base64Url::encode($binaryPublicKey),
+            'privateKey' => Base64Url::encode($binaryPrivateKey)
+        ];
+    }
+}
diff --git a/vendor/minishlink/web-push/src/WebPush.php b/vendor/minishlink/web-push/src/WebPush.php
index aaa9b4b..1f83812 100644
--- a/vendor/minishlink/web-push/src/WebPush.php
+++ b/vendor/minishlink/web-push/src/WebPush.php
@@ -1,412 +1,412 @@
-<?php
-
-declare(strict_types=1);
-
-/*
- * This file is part of the WebPush library.
- *
- * (c) Louis Lagrange <lagrange.louis@gmail.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Minishlink\WebPush;
-
-use Base64Url\Base64Url;
-use GuzzleHttp\Client;
-use GuzzleHttp\Exception\RequestException;
-use GuzzleHttp\Psr7\Request;
-use Psr\Http\Message\ResponseInterface;
-
-class WebPush
-{
-    public const GCM_URL = 'https://android.googleapis.com/gcm/send';
-    public const FCM_BASE_URL = 'https://fcm.googleapis.com';
-
-    /**
-     * @var Client
-     */
-    private $client;
-
-    /**
-     * @var array
-     */
-    private $auth;
-
-    /**
-     * @var null|array Array of array of Notifications
-     */
-    private $notifications;
-
-    /**
-     * @var array Default options : TTL, urgency, topic, batchSize
-     */
-    private $defaultOptions;
-
-    /**
-     * @var int Automatic padding of payloads, if disabled, trade security for bandwidth
-     */
-    private $automaticPadding = Encryption::MAX_COMPATIBILITY_PAYLOAD_LENGTH;
-
-    /**
-     * @var bool Reuse VAPID headers in the same flush session to improve performance
-     */
-    private $reuseVAPIDHeaders = false;
-
-    /**
-     * @var array Dictionary for VAPID headers cache
-     */
-    private $vapidHeaders = [];
-
-    /**
-     * WebPush constructor.
-     *
-     * @param array    $auth           Some servers needs authentication
-     * @param array    $defaultOptions TTL, urgency, topic, batchSize
-     * @param int|null $timeout        Timeout of POST request
-     * @param array    $clientOptions
-     *
-     * @throws \ErrorException
-     */
-    public function __construct(array $auth = [], array $defaultOptions = [], ?int $timeout = 30, array $clientOptions = [])
-    {
-        $extensions = [
-            'curl' => '[WebPush] curl extension is not loaded but is required. You can fix this in your php.ini.',
-            'gmp' => '[WebPush] gmp extension is not loaded but is required for sending push notifications with payload or for VAPID authentication. You can fix this in your php.ini.',
-            'mbstring' => '[WebPush] mbstring extension is not loaded but is required for sending push notifications with payload or for VAPID authentication. You can fix this in your php.ini.',
-            'openssl' => '[WebPush] openssl extension is not loaded but is required for sending push notifications with payload or for VAPID authentication. You can fix this in your php.ini.',
-        ];
-        foreach ($extensions as $extension => $message) {
-            if (!extension_loaded($extension)) {
-                trigger_error($message, E_USER_WARNING);
-            }
-        }
-
-        if (ini_get('mbstring.func_overload') >= 2) {
-            trigger_error("[WebPush] mbstring.func_overload is enabled for str* functions. You must disable it if you want to send push notifications with payload or use VAPID. You can fix this in your php.ini.", E_USER_NOTICE);
-        }
-
-        if (isset($auth['VAPID'])) {
-            $auth['VAPID'] = VAPID::validate($auth['VAPID']);
-        }
-
-        $this->auth = $auth;
-
-        $this->setDefaultOptions($defaultOptions);
-
-        if (!array_key_exists('timeout', $clientOptions) && isset($timeout)) {
-            $clientOptions['timeout'] = $timeout;
-        }
-        $this->client = new Client($clientOptions);
-    }
-
-    /**
-     * Send a notification.
-     *
-     * @param SubscriptionInterface $subscription
-     * @param string|null $payload If you want to send an array, json_encode it
-     * @param bool $flush If you want to flush directly (usually when you send only one notification)
-     * @param array $options Array with several options tied to this notification. If not set, will use the default options that you can set in the WebPush object
-     * @param array $auth Use this auth details instead of what you provided when creating WebPush
-     *
-     * @return \Generator|MessageSentReport[]|true Return an array of information if $flush is set to true and the queued requests has failed.
-     *                    Else return true
-     *
-     * @throws \ErrorException
-     */
-    public function sendNotification(SubscriptionInterface $subscription, ?string $payload = null, bool $flush = false, array $options = [], array $auth = [])
-    {
-        if (isset($payload)) {
-            if (Utils::safeStrlen($payload) > Encryption::MAX_PAYLOAD_LENGTH) {
-                throw new \ErrorException('Size of payload must not be greater than '.Encryption::MAX_PAYLOAD_LENGTH.' octets.');
-            }
-
-            $contentEncoding = $subscription->getContentEncoding();
-            if (!$contentEncoding) {
-                throw new \ErrorException('Subscription should have a content encoding');
-            }
-
-            $payload = Encryption::padPayload($payload, $this->automaticPadding, $contentEncoding);
-        }
-
-        if (array_key_exists('VAPID', $auth)) {
-            $auth['VAPID'] = VAPID::validate($auth['VAPID']);
-        }
-
-        $this->notifications[] = new Notification($subscription, $payload, $options, $auth);
-
-        return false !== $flush ? $this->flush() : true;
-    }
-
-    /**
-     * Flush notifications. Triggers the requests.
-     *
-     * @param null|int $batchSize Defaults the value defined in defaultOptions during instantiation (which defaults to 1000).
-     *
-     * @return \Generator|MessageSentReport[]
-     * @throws \ErrorException
-     */
-    public function flush(?int $batchSize = null): \Generator
-    {
-        if (null === $this->notifications || empty($this->notifications)) {
-            yield from [];
-            return;
-        }
-
-        if (null === $batchSize) {
-            $batchSize = $this->defaultOptions['batchSize'];
-        }
-
-        $batches = array_chunk($this->notifications, $batchSize);
-
-        // reset queue
-        $this->notifications = [];
-
-        foreach ($batches as $batch) {
-            // for each endpoint server type
-            $requests = $this->prepare($batch);
-
-            $promises = [];
-
-            foreach ($requests as $request) {
-                $promises[] = $this->client->sendAsync($request)
-                    ->then(function ($response) use ($request) {
-                        /** @var ResponseInterface $response * */
-                        return new MessageSentReport($request, $response);
-                    })
-                    ->otherwise(function ($reason) {
-                        /** @var RequestException $reason **/
-                        return new MessageSentReport($reason->getRequest(), $reason->getResponse(), false, $reason->getMessage());
-                    });
-            }
-
-            foreach ($promises as $promise) {
-                yield $promise->wait();
-            }
-        }
-
-        if ($this->reuseVAPIDHeaders) {
-            $this->vapidHeaders = [];
-        }
-    }
-
-    /**
-     * @param array $notifications
-     *
-     * @return array
-     *
-     * @throws \ErrorException
-     */
-    private function prepare(array $notifications): array
-    {
-        $requests = [];
-        /** @var Notification $notification */
-        foreach ($notifications as $notification) {
-            $subscription = $notification->getSubscription();
-            $endpoint = $subscription->getEndpoint();
-            $userPublicKey = $subscription->getPublicKey();
-            $userAuthToken = $subscription->getAuthToken();
-            $contentEncoding = $subscription->getContentEncoding();
-            $payload = $notification->getPayload();
-            $options = $notification->getOptions($this->getDefaultOptions());
-            $auth = $notification->getAuth($this->auth);
-
-            if (!empty($payload) && !empty($userPublicKey) && !empty($userAuthToken)) {
-                if (!$contentEncoding) {
-                    throw new \ErrorException('Subscription should have a content encoding');
-                }
-
-                $encrypted = Encryption::encrypt($payload, $userPublicKey, $userAuthToken, $contentEncoding);
-                $cipherText = $encrypted['cipherText'];
-                $salt = $encrypted['salt'];
-                $localPublicKey = $encrypted['localPublicKey'];
-
-                $headers = [
-                    'Content-Type' => 'application/octet-stream',
-                    'Content-Encoding' => $contentEncoding,
-                ];
-
-                if ($contentEncoding === "aesgcm") {
-                    $headers['Encryption'] = 'salt='.Base64Url::encode($salt);
-                    $headers['Crypto-Key'] = 'dh='.Base64Url::encode($localPublicKey);
-                }
-
-                $encryptionContentCodingHeader = Encryption::getContentCodingHeader($salt, $localPublicKey, $contentEncoding);
-                $content = $encryptionContentCodingHeader.$cipherText;
-
-                $headers['Content-Length'] = Utils::safeStrlen($content);
-            } else {
-                $headers = [
-                    'Content-Length' => 0,
-                ];
-
-                $content = '';
-            }
-
-            $headers['TTL'] = $options['TTL'];
-
-            if (isset($options['urgency'])) {
-                $headers['Urgency'] = $options['urgency'];
-            }
-
-            if (isset($options['topic'])) {
-                $headers['Topic'] = $options['topic'];
-            }
-
-            // if GCM
-            if (substr($endpoint, 0, strlen(self::GCM_URL)) === self::GCM_URL) {
-                if (array_key_exists('GCM', $auth)) {
-                    $headers['Authorization'] = 'key='.$auth['GCM'];
-                } else {
-                    throw new \ErrorException('No GCM API Key specified.');
-                }
-            }
-            // if VAPID (GCM doesn't support it but FCM does)
-            elseif (array_key_exists('VAPID', $auth) && $contentEncoding) {
-                $audience = parse_url($endpoint, PHP_URL_SCHEME).'://'.parse_url($endpoint, PHP_URL_HOST);
-                if (!parse_url($audience)) {
-                    throw new \ErrorException('Audience "'.$audience.'"" could not be generated.');
-                }
-
-                $vapidHeaders = $this->getVAPIDHeaders($audience, $contentEncoding, $auth['VAPID']);
-
-                $headers['Authorization'] = $vapidHeaders['Authorization'];
-
-                if ($contentEncoding === 'aesgcm') {
-                    if (array_key_exists('Crypto-Key', $headers)) {
-                        $headers['Crypto-Key'] .= ';'.$vapidHeaders['Crypto-Key'];
-                    } else {
-                        $headers['Crypto-Key'] = $vapidHeaders['Crypto-Key'];
-                    }
-                }
-            }
-
-            $requests[] = new Request('POST', $endpoint, $headers, $content);
-        }
-
-        return $requests;
-    }
-
-    /**
-     * @return bool
-     */
-    public function isAutomaticPadding(): bool
-    {
-        return $this->automaticPadding !== 0;
-    }
-
-    /**
-     * @return int
-     */
-    public function getAutomaticPadding()
-    {
-        return $this->automaticPadding;
-    }
-
-    /**
-     * @param int|bool $automaticPadding Max padding length
-     *
-     * @return WebPush
-     *
-     * @throws \Exception
-     */
-    public function setAutomaticPadding($automaticPadding): WebPush
-    {
-        if ($automaticPadding > Encryption::MAX_PAYLOAD_LENGTH) {
-            throw new \Exception('Automatic padding is too large. Max is '.Encryption::MAX_PAYLOAD_LENGTH.'. Recommended max is '.Encryption::MAX_COMPATIBILITY_PAYLOAD_LENGTH.' for compatibility reasons (see README).');
-        } elseif ($automaticPadding < 0) {
-            throw new \Exception('Padding length should be positive or zero.');
-        } elseif ($automaticPadding === true) {
-            $this->automaticPadding = Encryption::MAX_COMPATIBILITY_PAYLOAD_LENGTH;
-        } elseif ($automaticPadding === false) {
-            $this->automaticPadding = 0;
-        } else {
-            $this->automaticPadding = $automaticPadding;
-        }
-
-        return $this;
-    }
-
-    /**
-     * @return bool
-     */
-    public function getReuseVAPIDHeaders()
-    {
-        return $this->reuseVAPIDHeaders;
-    }
-
-    /**
-     * Reuse VAPID headers in the same flush session to improve performance
-     * @param bool $enabled
-     *
-     * @return WebPush
-     */
-    public function setReuseVAPIDHeaders(bool $enabled)
-    {
-        $this->reuseVAPIDHeaders = $enabled;
-
-        return $this;
-    }
-
-    /**
-     * @return array
-     */
-    public function getDefaultOptions(): array
-    {
-        return $this->defaultOptions;
-    }
-
-    /**
-     * @param array $defaultOptions Keys 'TTL' (Time To Live, defaults 4 weeks), 'urgency', 'topic', 'batchSize'
-     *
-     * @return WebPush
-     */
-    public function setDefaultOptions(array $defaultOptions)
-    {
-        $this->defaultOptions['TTL'] = isset($defaultOptions['TTL']) ? $defaultOptions['TTL'] : 2419200;
-        $this->defaultOptions['urgency'] = isset($defaultOptions['urgency']) ? $defaultOptions['urgency'] : null;
-        $this->defaultOptions['topic'] = isset($defaultOptions['topic']) ? $defaultOptions['topic'] : null;
-        $this->defaultOptions['batchSize'] = isset($defaultOptions['batchSize']) ? $defaultOptions['batchSize'] : 1000;
-
-        return $this;
-    }
-
-    /**
-     * @return int
-     */
-    public function countPendingNotifications(): int
-    {
-        return null !== $this->notifications ? count($this->notifications) : 0;
-    }
-
-    /**
-     * @param string $audience
-     * @param string $contentEncoding
-     * @param array $vapid
-     * @return array
-     * @throws \ErrorException
-     */
-    private function getVAPIDHeaders(string $audience, string $contentEncoding, array $vapid)
-    {
-        $vapidHeaders = null;
-
-        $cache_key = null;
-        if ($this->reuseVAPIDHeaders) {
-            $cache_key = implode('#', [$audience, $contentEncoding, crc32(serialize($vapid))]);
-            if (array_key_exists($cache_key, $this->vapidHeaders)) {
-                $vapidHeaders = $this->vapidHeaders[$cache_key];
-            }
-        }
-
-        if (!$vapidHeaders) {
-            $vapidHeaders = VAPID::getVapidHeaders($audience, $vapid['subject'], $vapid['publicKey'], $vapid['privateKey'], $contentEncoding);
-        }
-
-        if ($this->reuseVAPIDHeaders) {
-            $this->vapidHeaders[$cache_key] = $vapidHeaders;
-        }
-
-        return $vapidHeaders;
-    }
-}
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the WebPush library.
+ *
+ * (c) Louis Lagrange <lagrange.louis@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Minishlink\WebPush;
+
+use Base64Url\Base64Url;
+use GuzzleHttp\Client;
+use GuzzleHttp\Exception\RequestException;
+use GuzzleHttp\Psr7\Request;
+use Psr\Http\Message\ResponseInterface;
+
+class WebPush
+{
+    public const GCM_URL = 'https://android.googleapis.com/gcm/send';
+    public const FCM_BASE_URL = 'https://fcm.googleapis.com';
+
+    /**
+     * @var Client
+     */
+    private $client;
+
+    /**
+     * @var array
+     */
+    private $auth;
+
+    /**
+     * @var null|array Array of array of Notifications
+     */
+    private $notifications;
+
+    /**
+     * @var array Default options : TTL, urgency, topic, batchSize
+     */
+    private $defaultOptions;
+
+    /**
+     * @var int Automatic padding of payloads, if disabled, trade security for bandwidth
+     */
+    private $automaticPadding = Encryption::MAX_COMPATIBILITY_PAYLOAD_LENGTH;
+
+    /**
+     * @var bool Reuse VAPID headers in the same flush session to improve performance
+     */
+    private $reuseVAPIDHeaders = false;
+
+    /**
+     * @var array Dictionary for VAPID headers cache
+     */
+    private $vapidHeaders = [];
+
+    /**
+     * WebPush constructor.
+     *
+     * @param array    $auth           Some servers needs authentication
+     * @param array    $defaultOptions TTL, urgency, topic, batchSize
+     * @param int|null $timeout        Timeout of POST request
+     * @param array    $clientOptions
+     *
+     * @throws \ErrorException
+     */
+    public function __construct(array $auth = [], array $defaultOptions = [], ?int $timeout = 30, array $clientOptions = [])
+    {
+        $extensions = [
+            'curl' => '[WebPush] curl extension is not loaded but is required. You can fix this in your php.ini.',
+            'gmp' => '[WebPush] gmp extension is not loaded but is required for sending push notifications with payload or for VAPID authentication. You can fix this in your php.ini.',
+            'mbstring' => '[WebPush] mbstring extension is not loaded but is required for sending push notifications with payload or for VAPID authentication. You can fix this in your php.ini.',
+            'openssl' => '[WebPush] openssl extension is not loaded but is required for sending push notifications with payload or for VAPID authentication. You can fix this in your php.ini.',
+        ];
+        foreach ($extensions as $extension => $message) {
+            if (!extension_loaded($extension)) {
+                trigger_error($message, E_USER_WARNING);
+            }
+        }
+
+        if (ini_get('mbstring.func_overload') >= 2) {
+            trigger_error("[WebPush] mbstring.func_overload is enabled for str* functions. You must disable it if you want to send push notifications with payload or use VAPID. You can fix this in your php.ini.", E_USER_NOTICE);
+        }
+
+        if (isset($auth['VAPID'])) {
+            $auth['VAPID'] = VAPID::validate($auth['VAPID']);
+        }
+
+        $this->auth = $auth;
+
+        $this->setDefaultOptions($defaultOptions);
+
+        if (!array_key_exists('timeout', $clientOptions) && isset($timeout)) {
+            $clientOptions['timeout'] = $timeout;
+        }
+        $this->client = new Client($clientOptions);
+    }
+
+    /**
+     * Send a notification.
+     *
+     * @param SubscriptionInterface $subscription
+     * @param string|null $payload If you want to send an array, json_encode it
+     * @param bool $flush If you want to flush directly (usually when you send only one notification)
+     * @param array $options Array with several options tied to this notification. If not set, will use the default options that you can set in the WebPush object
+     * @param array $auth Use this auth details instead of what you provided when creating WebPush
+     *
+     * @return \Generator|MessageSentReport[]|true Return an array of information if $flush is set to true and the queued requests has failed.
+     *                    Else return true
+     *
+     * @throws \ErrorException
+     */
+    public function sendNotification(SubscriptionInterface $subscription, ?string $payload = null, bool $flush = false, array $options = [], array $auth = [])
+    {
+        if (isset($payload)) {
+            if (Utils::safeStrlen($payload) > Encryption::MAX_PAYLOAD_LENGTH) {
+                throw new \ErrorException('Size of payload must not be greater than '.Encryption::MAX_PAYLOAD_LENGTH.' octets.');
+            }
+
+            $contentEncoding = $subscription->getContentEncoding();
+            if (!$contentEncoding) {
+                throw new \ErrorException('Subscription should have a content encoding');
+            }
+
+            $payload = Encryption::padPayload($payload, $this->automaticPadding, $contentEncoding);
+        }
+
+        if (array_key_exists('VAPID', $auth)) {
+            $auth['VAPID'] = VAPID::validate($auth['VAPID']);
+        }
+
+        $this->notifications[] = new Notification($subscription, $payload, $options, $auth);
+
+        return false !== $flush ? $this->flush() : true;
+    }
+
+    /**
+     * Flush notifications. Triggers the requests.
+     *
+     * @param null|int $batchSize Defaults the value defined in defaultOptions during instantiation (which defaults to 1000).
+     *
+     * @return \Generator|MessageSentReport[]
+     * @throws \ErrorException
+     */
+    public function flush(?int $batchSize = null): \Generator
+    {
+        if (null === $this->notifications || empty($this->notifications)) {
+            yield from [];
+            return;
+        }
+
+        if (null === $batchSize) {
+            $batchSize = $this->defaultOptions['batchSize'];
+        }
+
+        $batches = array_chunk($this->notifications, $batchSize);
+
+        // reset queue
+        $this->notifications = [];
+
+        foreach ($batches as $batch) {
+            // for each endpoint server type
+            $requests = $this->prepare($batch);
+
+            $promises = [];
+
+            foreach ($requests as $request) {
+                $promises[] = $this->client->sendAsync($request)
+                    ->then(function ($response) use ($request) {
+                        /** @var ResponseInterface $response * */
+                        return new MessageSentReport($request, $response);
+                    })
+                    ->otherwise(function ($reason) {
+                        /** @var RequestException $reason **/
+                        return new MessageSentReport($reason->getRequest(), $reason->getResponse(), false, $reason->getMessage());
+                    });
+            }
+
+            foreach ($promises as $promise) {
+                yield $promise->wait();
+            }
+        }
+
+        if ($this->reuseVAPIDHeaders) {
+            $this->vapidHeaders = [];
+        }
+    }
+
+    /**
+     * @param array $notifications
+     *
+     * @return array
+     *
+     * @throws \ErrorException
+     */
+    private function prepare(array $notifications): array
+    {
+        $requests = [];
+        /** @var Notification $notification */
+        foreach ($notifications as $notification) {
+            $subscription = $notification->getSubscription();
+            $endpoint = $subscription->getEndpoint();
+            $userPublicKey = $subscription->getPublicKey();
+            $userAuthToken = $subscription->getAuthToken();
+            $contentEncoding = $subscription->getContentEncoding();
+            $payload = $notification->getPayload();
+            $options = $notification->getOptions($this->getDefaultOptions());
+            $auth = $notification->getAuth($this->auth);
+
+            if (!empty($payload) && !empty($userPublicKey) && !empty($userAuthToken)) {
+                if (!$contentEncoding) {
+                    throw new \ErrorException('Subscription should have a content encoding');
+                }
+
+                $encrypted = Encryption::encrypt($payload, $userPublicKey, $userAuthToken, $contentEncoding);
+                $cipherText = $encrypted['cipherText'];
+                $salt = $encrypted['salt'];
+                $localPublicKey = $encrypted['localPublicKey'];
+
+                $headers = [
+                    'Content-Type' => 'application/octet-stream',
+                    'Content-Encoding' => $contentEncoding,
+                ];
+
+                if ($contentEncoding === "aesgcm") {
+                    $headers['Encryption'] = 'salt='.Base64Url::encode($salt);
+                    $headers['Crypto-Key'] = 'dh='.Base64Url::encode($localPublicKey);
+                }
+
+                $encryptionContentCodingHeader = Encryption::getContentCodingHeader($salt, $localPublicKey, $contentEncoding);
+                $content = $encryptionContentCodingHeader.$cipherText;
+
+                $headers['Content-Length'] = Utils::safeStrlen($content);
+            } else {
+                $headers = [
+                    'Content-Length' => 0,
+                ];
+
+                $content = '';
+            }
+
+            $headers['TTL'] = $options['TTL'];
+
+            if (isset($options['urgency'])) {
+                $headers['Urgency'] = $options['urgency'];
+            }
+
+            if (isset($options['topic'])) {
+                $headers['Topic'] = $options['topic'];
+            }
+
+            // if GCM
+            if (substr($endpoint, 0, strlen(self::GCM_URL)) === self::GCM_URL) {
+                if (array_key_exists('GCM', $auth)) {
+                    $headers['Authorization'] = 'key='.$auth['GCM'];
+                } else {
+                    throw new \ErrorException('No GCM API Key specified.');
+                }
+            }
+            // if VAPID (GCM doesn't support it but FCM does)
+            elseif (array_key_exists('VAPID', $auth) && $contentEncoding) {
+                $audience = parse_url($endpoint, PHP_URL_SCHEME).'://'.parse_url($endpoint, PHP_URL_HOST);
+                if (!parse_url($audience)) {
+                    throw new \ErrorException('Audience "'.$audience.'"" could not be generated.');
+                }
+
+                $vapidHeaders = $this->getVAPIDHeaders($audience, $contentEncoding, $auth['VAPID']);
+
+                $headers['Authorization'] = $vapidHeaders['Authorization'];
+
+                if ($contentEncoding === 'aesgcm') {
+                    if (array_key_exists('Crypto-Key', $headers)) {
+                        $headers['Crypto-Key'] .= ';'.$vapidHeaders['Crypto-Key'];
+                    } else {
+                        $headers['Crypto-Key'] = $vapidHeaders['Crypto-Key'];
+                    }
+                }
+            }
+
+            $requests[] = new Request('POST', $endpoint, $headers, $content);
+        }
+
+        return $requests;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isAutomaticPadding(): bool
+    {
+        return $this->automaticPadding !== 0;
+    }
+
+    /**
+     * @return int
+     */
+    public function getAutomaticPadding()
+    {
+        return $this->automaticPadding;
+    }
+
+    /**
+     * @param int|bool $automaticPadding Max padding length
+     *
+     * @return WebPush
+     *
+     * @throws \Exception
+     */
+    public function setAutomaticPadding($automaticPadding): WebPush
+    {
+        if ($automaticPadding > Encryption::MAX_PAYLOAD_LENGTH) {
+            throw new \Exception('Automatic padding is too large. Max is '.Encryption::MAX_PAYLOAD_LENGTH.'. Recommended max is '.Encryption::MAX_COMPATIBILITY_PAYLOAD_LENGTH.' for compatibility reasons (see README).');
+        } elseif ($automaticPadding < 0) {
+            throw new \Exception('Padding length should be positive or zero.');
+        } elseif ($automaticPadding === true) {
+            $this->automaticPadding = Encryption::MAX_COMPATIBILITY_PAYLOAD_LENGTH;
+        } elseif ($automaticPadding === false) {
+            $this->automaticPadding = 0;
+        } else {
+            $this->automaticPadding = $automaticPadding;
+        }
+
+        return $this;
+    }
+
+    /**
+     * @return bool
+     */
+    public function getReuseVAPIDHeaders()
+    {
+        return $this->reuseVAPIDHeaders;
+    }
+
+    /**
+     * Reuse VAPID headers in the same flush session to improve performance
+     * @param bool $enabled
+     *
+     * @return WebPush
+     */
+    public function setReuseVAPIDHeaders(bool $enabled)
+    {
+        $this->reuseVAPIDHeaders = $enabled;
+
+        return $this;
+    }
+
+    /**
+     * @return array
+     */
+    public function getDefaultOptions(): array
+    {
+        return $this->defaultOptions;
+    }
+
+    /**
+     * @param array $defaultOptions Keys 'TTL' (Time To Live, defaults 4 weeks), 'urgency', 'topic', 'batchSize'
+     *
+     * @return WebPush
+     */
+    public function setDefaultOptions(array $defaultOptions)
+    {
+        $this->defaultOptions['TTL'] = isset($defaultOptions['TTL']) ? $defaultOptions['TTL'] : 2419200;
+        $this->defaultOptions['urgency'] = isset($defaultOptions['urgency']) ? $defaultOptions['urgency'] : null;
+        $this->defaultOptions['topic'] = isset($defaultOptions['topic']) ? $defaultOptions['topic'] : null;
+        $this->defaultOptions['batchSize'] = isset($defaultOptions['batchSize']) ? $defaultOptions['batchSize'] : 1000;
+
+        return $this;
+    }
+
+    /**
+     * @return int
+     */
+    public function countPendingNotifications(): int
+    {
+        return null !== $this->notifications ? count($this->notifications) : 0;
+    }
+
+    /**
+     * @param string $audience
+     * @param string $contentEncoding
+     * @param array $vapid
+     * @return array
+     * @throws \ErrorException
+     */
+    private function getVAPIDHeaders(string $audience, string $contentEncoding, array $vapid)
+    {
+        $vapidHeaders = null;
+
+        $cache_key = null;
+        if ($this->reuseVAPIDHeaders) {
+            $cache_key = implode('#', [$audience, $contentEncoding, crc32(serialize($vapid))]);
+            if (array_key_exists($cache_key, $this->vapidHeaders)) {
+                $vapidHeaders = $this->vapidHeaders[$cache_key];
+            }
+        }
+
+        if (!$vapidHeaders) {
+            $vapidHeaders = VAPID::getVapidHeaders($audience, $vapid['subject'], $vapid['publicKey'], $vapid['privateKey'], $contentEncoding);
+        }
+
+        if ($this->reuseVAPIDHeaders) {
+            $this->vapidHeaders[$cache_key] = $vapidHeaders;
+        }
+
+        return $vapidHeaders;
+    }
+}