8 files changed, 1119 insertions, 0 deletions
diff --git a/library/vendor/iplx/Http/Client.php b/library/vendor/iplx/Http/Client.php
new file mode 100644
index 0000000..39d8905
--- /dev/null
+++ b/library/vendor/iplx/Http/Client.php
@@ -0,0 +1,199 @@
+<?php
+
+namespace iplx\Http;
+
+use RuntimeException;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * HTTP client that uses cURL
+ */
+class Client implements ClientInterface
+{
+    /**
+     * Client version
+     *
+     * @var string
+     */
+    const VERSION = '1.0.0';
+
+    /**
+     * Maximum number of internal cURL handles
+     *
+     * @var int
+     */
+    const MAX_HANDLES = 4;
+
+    /**
+     * Internal cURL handles
+     *
+     * @var array
+     */
+    protected $handles = [];
+
+    /**
+     * Return user agent
+     *
+     * @return  string
+     */
+    protected function getAgent()
+    {
+        $defaultAgent = 'ipl/' . self::VERSION;
+        $defaultAgent .= ' curl/' . curl_version()['version'];
+        $defaultAgent .= ' PHP/' . PHP_VERSION;
+
+        return $defaultAgent;
+    }
+
+    /**
+     * Create and return a cURL handle based on the given request
+     *
+     * @param   RequestInterface    $request
+     * @param   array               $options
+     *
+     * @return  Handle
+     *
+     * @throws  RuntimeException
+     */
+    protected function createHandle(RequestInterface $request, array $options)
+    {
+        $headers = [];
+        foreach ($request->getHeaders() as $name => $values) {
+            $headers[] = $name . ': ' . implode(', ', $values);
+        }
+
+        $curlOptions = [
+            CURLOPT_FOLLOWLOCATION  => true,
+            CURLOPT_FAILONERROR     => true,
+            CURLOPT_USERAGENT       => $this->getAgent()
+        ];
+
+        if (isset($options['curl'])) {
+            $curlOptions += $options['curl'];
+        }
+
+        $curlOptions += [
+            CURLOPT_CUSTOMREQUEST   => $request->getMethod(),
+            CURLOPT_HTTPHEADER      => $headers,
+            CURLOPT_RETURNTRANSFER  => false,
+            CURLOPT_URL             => (string) $request->getUri()->withFragment('')
+        ];
+
+        if (! $request->hasHeader('Accept')) {
+            $curlOptions[CURLOPT_HTTPHEADER][] = 'Accept:';
+        }
+
+        if (! $request->hasHeader('Content-Type')) {
+            $curlOptions[CURLOPT_HTTPHEADER][] = 'Content-Type:';
+        }
+
+        if (! $request->hasHeader('Expect')) {
+            $curlOptions[CURLOPT_HTTPHEADER][] = 'Expect:';
+        }
+
+        if ($request->getBody()->getSize() !== 0) {
+            $curlOptions[CURLOPT_UPLOAD] = true;
+
+            $body = $request->getBody();
+            if ($body->isSeekable()) {
+                $body->seek(0);
+            }
+
+            $curlOptions[CURLOPT_READFUNCTION] = function ($ch, $infile, $length) use ($body) {
+                return $body->read($length);
+            };
+        }
+
+        if ($request->getProtocolVersion()) {
+            $protocolVersion = null;
+            switch ($request->getProtocolVersion()) {
+                case '2.0':
+                    if (version_compare(phpversion(), '7.0.7', '<')) {
+                        throw new RuntimeException('You need at least PHP 7.0.7 to use HTTP 2.0');
+                    }
+                    $protocolVersion = CURL_HTTP_VERSION_2;
+                    break;
+                case '1.1':
+                    $protocolVersion = CURL_HTTP_VERSION_1_1;
+                    break;
+                default:
+                    $protocolVersion = CURL_HTTP_VERSION_1_0;
+            }
+
+            $curlOptions[CURLOPT_HTTP_VERSION] = $protocolVersion;
+        }
+
+        $handle = new Handle();
+
+        $curlOptions[CURLOPT_HEADERFUNCTION] = function($ch, $header) use ($handle) {
+            $size = strlen($header);
+
+            if (! trim($header) || strpos($header, 'HTTP/') === 0) {
+                return $size;
+            }
+
+            list($key, $value) = explode(': ', $header, 2);
+            $handle->responseHeaders[$key] = rtrim($value, "\r\n");
+
+            return $size;
+        };
+
+        $handle->responseBody = Stream::open();
+
+        $curlOptions[CURLOPT_WRITEFUNCTION] = function ($ch, $string) use ($handle) {
+            return $handle->responseBody->write($string);
+        };
+
+        $ch = ! empty($this->handles) ? array_pop($this->handles) : curl_init();
+
+        curl_setopt_array($ch, $curlOptions);
+
+        $handle->handle = $ch;
+
+        return $handle;
+    }
+
+    /**
+     * Execute a cURL handle and return the response
+     *
+     * @param   Handle  $handle
+     *
+     * @return  ResponseInterface
+     *
+     * @throws  RuntimeException
+     */
+    protected function executeHandle(Handle $handle)
+    {
+        $ch = $handle->handle;
+
+        $success = curl_exec($ch);
+
+        if ($success === false) {
+            throw new RuntimeException(curl_error($ch));
+        }
+
+        $response = new Response(
+            curl_getinfo($ch, CURLINFO_HTTP_CODE), $handle->responseHeaders, $handle->responseBody
+        );
+
+        if (count($this->handles) >= self::MAX_HANDLES) {
+            curl_close($ch);
+        } else {
+            curl_reset($ch);
+
+            $this->handles[] = $ch;
+        }
+
+        return $response;
+    }
+
+    public function send(RequestInterface $request, array $options = [])
+    {
+        $handle = $this->createHandle($request, $options);
+
+        $response = $this->executeHandle($handle);
+
+        return $response;
+    }
+}
diff --git a/library/vendor/iplx/Http/ClientInterface.php b/library/vendor/iplx/Http/ClientInterface.php
new file mode 100644
index 0000000..e7765a7
--- /dev/null
+++ b/library/vendor/iplx/Http/ClientInterface.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace iplx\Http;
+
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * Interface for HTTP clients which send HTTP requests
+ */
+interface ClientInterface
+{
+    /**
+     * Send a HTTP request
+     *
+     * @param   RequestInterface    $request    Request to send
+     * @param   array               $options    Request options
+     *
+     * @return  ResponseInterface               The response
+     */
+    public function send(RequestInterface $request, array $options = []);
+}
diff --git a/library/vendor/iplx/Http/Handle.php b/library/vendor/iplx/Http/Handle.php
new file mode 100644
index 0000000..490b5c5
--- /dev/null
+++ b/library/vendor/iplx/Http/Handle.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace iplx\Http;
+
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Internal cURL handle representation
+ */
+class Handle
+{
+    /**
+     * cURL handle
+     *
+     * @var resource
+     */
+    public $handle;
+
+    /**
+     * Response body
+     *
+     * @var StreamInterface
+     */
+    public $responseBody;
+
+    /**
+     * Received response headers
+     *
+     * @var array
+     */
+    public $responseHeaders = [];
+}
diff --git a/library/vendor/iplx/Http/MessageTrait.php b/library/vendor/iplx/Http/MessageTrait.php
new file mode 100644
index 0000000..c8dc9b3
--- /dev/null
+++ b/library/vendor/iplx/Http/MessageTrait.php
@@ -0,0 +1,174 @@
+<?php
+
+namespace iplx\Http;
+
+use Psr\Http\Message\StreamInterface;
+
+trait MessageTrait
+{
+    /**
+     * Case sensitive header names with lowercase header names as keys
+     *
+     * @var array
+     */
+    protected $headerNames = [];
+
+    /**
+     * Header values with lowercase header names as keys
+     *
+     * @var array
+     */
+    protected $headerValues = [];
+
+    /**
+     * The body of this request
+     *
+     * @var StreamInterface
+     */
+    protected $body;
+
+    /**
+     * Protocol version
+     *
+     * @var string
+     */
+    protected $protocolVersion;
+
+    public function getProtocolVersion()
+    {
+        return $this->protocolVersion;
+    }
+
+    public function withProtocolVersion($version)
+    {
+        $message = clone $this;
+        $message->protocolVersion = $version;
+
+        return $message;
+    }
+
+    public function getHeaders()
+    {
+        return array_combine($this->headerNames, $this->headerValues);
+    }
+
+    public function hasHeader($header)
+    {
+        return isset($this->headerValues[strtolower($header)]);
+    }
+
+    public function getHeader($header)
+    {
+        $header = strtolower($header);
+
+        if (! isset($this->headerValues[$header])) {
+            return [];
+        }
+
+        return $this->headerValues[$header];
+    }
+
+    public function getHeaderLine($name)
+    {
+        $name = strtolower($name);
+
+        if (! isset($this->headerValues[$name])) {
+            return '';
+        }
+
+        return implode(', ', $this->headerValues[$name]);
+    }
+
+    public function withHeader($name, $value)
+    {
+        $name = rtrim($name);
+
+        $value = $this->normalizeHeaderValues($value);
+
+        $normalized = strtolower($name);
+
+        $message = clone $this;
+        $message->headerNames[$normalized] = $name;
+        $message->headerValues[$normalized] = $value;
+
+        return $message;
+    }
+
+    public function withAddedHeader($name, $value)
+    {
+        $name = rtrim($name);
+
+        $value = $this->normalizeHeaderValues($value);
+
+        $normalized = strtolower($name);
+
+        $message = clone $this;
+        if (isset($message->headerNames[$normalized])) {
+            $message->headerValues[$normalized] = array_merge($message->headerValues[$normalized], $value);
+        } else {
+            $message->headerNames[$normalized] = $name;
+            $message->headerValues[$normalized] = $value;
+        }
+
+        return $message;
+    }
+
+    public function withoutHeader($name)
+    {
+        $normalized = strtolower(rtrim($name));
+
+        $message = clone $this;
+        unset($message->headerNames[$normalized]);
+        unset($message->headerValues[$normalized]);
+
+        return $message;
+    }
+
+    public function getBody()
+    {
+        return $this->body;
+    }
+
+    public function withBody(StreamInterface $body)
+    {
+        $message = clone $this;
+        $message->body = $body;
+
+        return $message;
+    }
+
+    protected function setHeaders(array $headers)
+    {
+        // Prepare header field names and header field values according to
+        // https://tools.ietf.org/html/rfc7230#section-3.2.4
+        $names = array_map('rtrim', array_keys($headers));
+        $values = $this->normalizeHeaderValues($headers);
+
+        $normalized = array_map('strtolower', $names);
+
+        $this->headerNames = array_combine(
+            $normalized,
+            $names
+        );
+
+        $this->headerValues = array_combine(
+            $normalized,
+            $values
+        );
+    }
+
+    protected function normalizeHeaderValues(array $values)
+    {
+        // Prepare header field names and header field values according to
+        // https://tools.ietf.org/html/rfc7230#section-3.2.4
+        return array_map(function ($value) {
+            if (! is_array($value)) {
+                $value = [$value];
+            }
+
+            return array_map(function ($value) {
+                return trim($value, " \t");
+            }, $value);
+        }, $values);
+    }
+}
diff --git a/library/vendor/iplx/Http/Request.php b/library/vendor/iplx/Http/Request.php
new file mode 100644
index 0000000..b9fae7d
--- /dev/null
+++ b/library/vendor/iplx/Http/Request.php
@@ -0,0 +1,143 @@
+<?php
+
+namespace iplx\Http;
+
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\UriInterface;
+
+/**
+ * A HTTP request
+ */
+class Request implements RequestInterface
+{
+    use MessageTrait;
+
+    /**
+     * HTTP method of the request
+     *
+     * @var string
+     */
+    protected $method;
+
+    /**
+     * The request target
+     *
+     * @var string|null
+     */
+    protected $requestTarget;
+
+    /**
+     * URI of the request
+     *
+     * @var UriInterface
+     */
+    protected $uri;
+
+    /**
+     * Create a new HTTP request
+     *
+     * @param   string      $method             HTTP method
+     * @param   string      $uri                URI
+     * @param   array       $headers            Request headers
+     * @param   string      $body               Request body
+     * @param   string      $protocolVersion    Protocol version
+     */
+    public function __construct($method, $uri, array $headers = [], $body = null, $protocolVersion = '1.1')
+    {
+        $this->method = $method;
+        $this->uri = new Uri($uri);
+        $this->setHeaders($headers);
+        $this->body = Stream::create($body);
+        $this->protocolVersion = $protocolVersion;
+
+        $this->provideHostHeader();
+    }
+
+    public function getRequestTarget()
+    {
+        if ($this->requestTarget !== null) {
+            return $this->requestTarget;
+        }
+
+        $requestTarget = $this->uri->getPath();
+
+        // Weak type checks to also check null
+
+        if ($requestTarget == '') {
+            $requestTarget = '/';
+        }
+
+        if ($this->uri->getQuery() != '') {
+            $requestTarget .= '?' . $this->uri->getQuery();
+        }
+
+        return $requestTarget;
+    }
+
+    public function withRequestTarget($requestTarget)
+    {
+        $request = clone $this;
+        $request->requestTarget = $requestTarget;
+
+        return $request;
+    }
+
+    public function getMethod()
+    {
+        return $this->method;
+    }
+
+    public function withMethod($method)
+    {
+        $request = clone $this;
+        $request->method = $method;
+
+        return $this;
+    }
+
+    public function getUri()
+    {
+        return $this->uri;
+    }
+
+    public function withUri(UriInterface $uri, $preserveHost = false)
+    {
+        $request = clone $this;
+        $request->uri = $uri;
+
+        if (! $preserveHost) {
+            $this->provideHostHeader(true);
+        }
+
+        return $this;
+    }
+
+    protected function provideHostHeader($force = false)
+    {
+        if ($this->hasHeader('host')) {
+            if (! $force) {
+                return;
+            }
+
+            $header = $this->headerNames['host'];
+        } else {
+            $header = 'Host';
+        }
+
+        $host = $this->uri->getHost();
+
+        // Weak type check to also check null
+        if ($host == '') {
+            $host = '';
+        } else {
+            $port = $this->uri->getPort();
+
+            if ($port !== null) {
+                $host .= ":$port";
+            }
+        }
+
+        $this->headerNames['host'] = $header;
+        $this->headerValues['host'] = [$host];
+    }
+}
diff --git a/library/vendor/iplx/Http/Response.php b/library/vendor/iplx/Http/Response.php
new file mode 100644
index 0000000..25448b1
--- /dev/null
+++ b/library/vendor/iplx/Http/Response.php
@@ -0,0 +1,64 @@
+<?php
+
+namespace iplx\Http;
+
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * A HTTP response
+ */
+class Response implements ResponseInterface
+{
+    use MessageTrait;
+
+    /**
+     * Status code of the response
+     *
+     * @var int
+     */
+    protected $statusCode;
+
+    /**
+     * Response status reason phrase
+     *
+     * @var string
+     */
+    protected $reasonPhrase = '';
+
+    /**
+     * Create a new HTTP response
+     *
+     * @param   int     $statusCode         Response status code
+     * @param   array   $headers            Response headers
+     * @param   string  $body               Response body
+     * @param   string  $protocolVersion    Protocol version
+     * @param   string  $reasonPhrase       Response status reason phrase
+     */
+    public function __construct($statusCode = 200, array $headers = [], $body = null, $protocolVersion = '1.1', $reasonPhrase = '')
+    {
+        $this->statusCode = $statusCode;
+        $this->setHeaders($headers);
+        $this->body = Stream::create($body);
+        $this->protocolVersion = $protocolVersion;
+        $this->reasonPhrase = $reasonPhrase;
+    }
+
+    public function getStatusCode()
+    {
+        return $this->statusCode;
+    }
+
+    public function withStatus($code, $reasonPhrase = '')
+    {
+        $response = clone $this;
+        $response->statusCode = $code;
+        $response->reasonPhrase = $reasonPhrase;
+
+        return $response;
+    }
+
+    public function getReasonPhrase()
+    {
+        return $this->reasonPhrase;
+    }
+}
diff --git a/library/vendor/iplx/Http/Stream.php b/library/vendor/iplx/Http/Stream.php
new file mode 100644
index 0000000..a113312
--- /dev/null
+++ b/library/vendor/iplx/Http/Stream.php
@@ -0,0 +1,283 @@
+<?php
+
+namespace iplx\Http;
+
+use Exception;
+use InvalidArgumentException;
+use RuntimeException;
+use Psr\Http\Message\StreamInterface;
+
+class Stream implements StreamInterface
+{
+    protected $stream;
+
+    protected $size;
+
+    protected $seekable;
+
+    protected $readable;
+
+    protected $writable;
+
+    public function __construct($stream)
+    {
+        if (! is_resource($stream)) {
+            throw new InvalidArgumentException('Invalid stream resource');
+        }
+
+        $this->stream = $stream;
+
+        $meta = stream_get_meta_data($this->stream);
+        $this->seekable = $meta['seekable'];
+        $this->readable = preg_match('/[r+]/', $meta['mode']) === 1;
+        $this->writable = preg_match('/[waxc+]/', $meta['mode']) === 1;
+    }
+
+    public function __destruct()
+    {
+        $this->close();
+    }
+
+    public function __toString()
+    {
+        try {
+            $this->seek(0);
+            $contents = stream_get_contents($this->stream);
+        } catch (Exception $e) {
+            $contents = '';
+        }
+
+        return $contents;
+    }
+
+    public function close()
+    {
+        if (isset($this->stream)) {
+            if (is_resource($this->stream)) {
+                fclose($this->stream);
+            }
+            $this->detach();
+        }
+    }
+
+    public function detach()
+    {
+        if (! isset($this->stream)) {
+            return null;
+        }
+
+        $stream = $this->stream;
+
+        $this->stream = null;
+        $this->size = null;
+        $this->seekable = false;
+        $this->readable = false;
+        $this->writable = false;
+
+        return $stream;
+    }
+
+    public function getSize()
+    {
+        if ($this->size !== null) {
+            return $this->size;
+        }
+
+        if (! isset($this->stream)) {
+            return null;
+        }
+
+        $stats = fstat($this->stream);
+        $this->size = $stats['size'];
+
+        return $this->size;
+    }
+
+    public function tell()
+    {
+        $this->assertAttached();
+
+        $position = ftell($this->stream);
+
+        if ($position === false) {
+            throw new RuntimeException('Unable to determine stream position');
+        }
+
+        return $position;
+    }
+
+    public function eof()
+    {
+        $this->assertAttached();
+
+        return feof($this->stream);
+    }
+
+    public function isSeekable()
+    {
+        return $this->seekable;
+    }
+
+    public function seek($offset, $whence = SEEK_SET)
+    {
+        $this->assertSeekable();
+
+        if (fseek($this->stream, $offset, $whence) === -1) {
+            throw new RuntimeException('Unable to seek to stream position');
+        }
+    }
+
+    public function rewind()
+    {
+        $this->seek(0);
+    }
+
+    public function isWritable()
+    {
+        return $this->writable;
+    }
+
+    public function write($string)
+    {
+        $this->assertWritable();
+
+        $written = fwrite($this->stream, $string);
+
+        if ($written === false) {
+            throw new RuntimeException('Unable to write to stream');
+        }
+
+        return $written;
+    }
+
+    public function isReadable()
+    {
+        return $this->readable;
+    }
+
+    public function read($length)
+    {
+        $this->assertReadable();
+
+        $data = fread($this->stream, $length);
+
+        if ($data === false) {
+            throw new RuntimeException('Unable to read from stream');
+        }
+
+        return $data;
+    }
+
+    public function getContents()
+    {
+        $this->assertReadable();
+
+        $contents = stream_get_contents($this->stream);
+
+        if ($contents === false) {
+            throw new RuntimeException('Unable to read stream contents');
+        }
+
+        return $contents;
+    }
+
+    public function getMetadata($key = null)
+    {
+        if (! isset($this->stream)) {
+            return $key === null ? [] : null;
+        }
+
+        $meta = stream_get_meta_data($this->stream);
+
+        if ($key === null) {
+            return $meta;
+        }
+
+        if (isset($meta[$key])) {
+            return $meta[$key];
+        }
+
+        return null;
+    }
+
+    public function assertAttached()
+    {
+        if (! isset($this->stream)) {
+            throw new RuntimeException('Stream is detached');
+        }
+    }
+
+    public function assertSeekable()
+    {
+        $this->assertAttached();
+
+        if (! $this->isSeekable()) {
+            throw new RuntimeException('Stream is not seekable');
+        }
+    }
+
+    public function assertReadable()
+    {
+        $this->assertAttached();
+
+        if (! $this->isReadable()) {
+            throw new RuntimeException('Stream is not readable');
+        }
+    }
+
+    public function assertWritable()
+    {
+        $this->assertAttached();
+
+        if (! $this->isWritable()) {
+            throw new RuntimeException('Stream is not writable');
+        }
+    }
+
+    /**
+     * Open a stream
+     *
+     * @param   string  $filename
+     * @param   string  $mode
+     *
+     * @return  static
+     */
+    public static function open($filename = 'php://temp', $mode = 'r+')
+    {
+        $stream = fopen($filename, $mode);
+
+        return new static($stream);
+    }
+
+    /**
+     * Create a stream
+     *
+     * @param   StreamInterface|string|resource $resource
+     *
+     * @return  StreamInterface
+     */
+    public static function create($resource)
+    {
+        if ($resource instanceof StreamInterface) {
+            return $resource;
+        }
+
+        if (is_scalar($resource)) {
+            $stream = fopen('php://temp', 'r+');
+
+            if ($resource !== '') {
+                fwrite($stream, $resource);
+                fseek($stream, 0);
+            }
+
+            return new static($stream);
+        }
+
+        if (is_resource($resource)) {
+            return new static($resource);
+        }
+
+        return static::open();
+    }
+
+}
diff --git a/library/vendor/iplx/Http/Uri.php b/library/vendor/iplx/Http/Uri.php
new file mode 100644
index 0000000..044fb17
--- /dev/null
+++ b/library/vendor/iplx/Http/Uri.php
@@ -0,0 +1,202 @@
+<?php
+
+namespace iplx\Http;
+
+use InvalidArgumentException;
+use Psr\Http\Message\UriInterface;
+
+class Uri implements UriInterface
+{
+    protected $scheme;
+
+    protected $host;
+
+    protected $port;
+
+    protected $user;
+
+    protected $pass;
+
+    protected $path;
+
+    protected $query;
+
+    protected $fragment;
+
+    public function __construct($uri = null)
+    {
+        $parts = parse_url($uri);
+
+        if ($parts === false) {
+            throw new InvalidArgumentException();
+        }
+
+        foreach ($parts as $component => $value) {
+            $this->$component = $value;
+        }
+    }
+
+    public function getScheme()
+    {
+        return $this->scheme;
+    }
+
+    public function getAuthority()
+    {
+        // Weak type check to also check null
+        if ($this->host == '') {
+            return '';
+        }
+
+        $authority = $this->host;
+
+        $userInfo = $this->getUserInfo();
+        $port = $this->getPort();
+
+        if ($userInfo) {
+            $authority = "$userInfo@$authority";
+        }
+
+        if ($port !== null) {
+            $authority .= ":$port";
+        }
+
+        return $authority;
+    }
+
+    public function getUserInfo()
+    {
+        $userInfo = $this->user;
+
+        if ($this->pass !== null) {
+            $userInfo .= ":{$this->pass}";
+        }
+
+        return $userInfo;
+    }
+
+    public function getHost()
+    {
+        return $this->host;
+    }
+
+    public function getPort()
+    {
+        return $this->port;
+    }
+
+    public function getPath()
+    {
+        return $this->path;
+    }
+
+    public function getQuery()
+    {
+        return $this->query;
+    }
+
+    public function getFragment()
+    {
+        return $this->fragment;
+    }
+
+    public function withScheme($scheme)
+    {
+        $uri = clone $this;
+        $uri->scheme = $scheme;
+
+        return $uri;
+    }
+
+    public function withUserInfo($user, $password = null)
+    {
+        $uri = clone $this;
+        $uri->user = $user;
+        $uri->pass = $password;
+
+        return $uri;
+    }
+
+    public function withHost($host)
+    {
+        $uri = clone $this;
+        $uri->host = $host;
+
+        return $uri;
+    }
+
+    public function withPort($port)
+    {
+        $uri = clone $this;
+        $uri->port = $port;
+
+        return $uri;
+    }
+
+    public function withPath($path)
+    {
+        $uri = clone $this;
+        $uri->path = $path;
+
+        return $uri;
+    }
+
+    public function withQuery($query)
+    {
+        $uri = clone $this;
+        $uri->query = $query;
+
+        return $uri;
+    }
+
+    public function withFragment($fragment)
+    {
+        $uri = clone $this;
+        $uri->fragment = $fragment;
+
+        return $uri;
+    }
+
+    public function __toString()
+    {
+        $scheme = $this->getScheme();
+        $authority = $this->getAuthority();
+        $path = $this->getPath();
+        $query = $this->getQuery();
+        $fragment = $this->getFragment();
+
+        $uri = '';
+
+        // Weak type checks to also check null
+
+        if ($scheme != '') {
+            $uri = "$scheme:";
+        }
+
+        if ($authority != '') {
+            $uri .= "//$authority";
+        }
+
+        if ($path != '') {
+            if ($path[0] === '/') {
+                if ($authority == '') {
+                    $path = ltrim($path, '/');
+                }
+            } else {
+                $path = "/$path";
+            }
+
+            $uri .= $path;
+        }
+
+        if ($query != '') {
+            $uri .= "?$query";
+        }
+
+        if ($fragment != '') {
+            $uri .= "#$fragment";
+        }
+
+        return $uri;
+    }
+}