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<?php |
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declare(strict_types=1); |
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namespace Hyphper\Frame; |
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use Hyphper\Frame\PaddingInterface; |
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/** |
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* DATA frames convey arbitrary, variable-length sequences of octets |
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* associated with a stream. One or more DATA frames are used, for instance, |
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* to carry HTTP request or response payloads. |
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* |
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* @package Hyphper\Frame |
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*/ |
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class DataFrame extends \Hyphper\Frame implements PaddingInterface |
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{ |
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use PaddingTrait; |
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protected $defined_flags = [ |
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Flag::END_STREAM, |
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Flag::PADDED |
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]; |
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protected $type = 0x0; |
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protected $stream_association = self::HAS_STREAM; |
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protected $data; |
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/** |
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* DataFrame constructor. |
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* |
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* @param array $options |
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*/ |
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public function __construct(array $options = []) |
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{ |
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parent::__construct($options); |
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$this->data = $options['data'] ?? ''; |
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} |
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/** |
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* @return string |
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*/ |
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public function serializeBody(): string |
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{ |
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$padding_data = $this->serializePaddingData(); |
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$padding = str_repeat("\0", $this->padding_length ?? 0); |
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return $padding_data . $this->data . $padding; |
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} |
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/** |
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* Given the body of a frame, parses it into frame data. This populates |
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* the non-header parts of the frame: that is, it does not populate the |
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* stream ID or flags. |
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* |
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* |
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* @param string $data |
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* |
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* @return void |
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*/ |
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public function parseBody(string $data) |
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{ |
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$padding_data_length = $this->parsePaddingData($data); |
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$this->data = $data; |
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if ($this->padding_length) { |
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$this->data = substr($data, $padding_data_length, $this->padding_length * -1); |
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} |
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$this->body_len = strlen($data); |
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if ($this->padding_length && $this->padding_length >= $this->body_len) { |
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1 |
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throw new \Hyphper\Frame\Exception\InvalidPaddingException("Padding is too long."); |
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} |
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} |
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/** |
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* The length of the frame that needs to be accounted for when considering |
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* flow control. |
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*/ |
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public function flowControlledLength() |
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{ |
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$padding_len = ($this->padding_length) ? $this->padding_length + 1 : 0; |
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return strlen($this->data) + $padding_len; |
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} |
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/** |
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* @return int |
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*/ |
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3 |
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public function getData() |
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{ |
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return $this->data; |
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} |
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/** |
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* @param int $data |
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* |
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* @return DataFrame |
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*/ |
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public function setData($data) |
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{ |
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$this->data = $data; |
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return $this; |
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} |
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} |
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hyphper /
h2-frame
