mxmbsocket/src/Ratchet/WebSocket/Version/Hixie76/Frame.php
Chris Boden 53354cd967 [WebSocket] Frame concatenation
If the server receives two frames that have been concatenated (RFC only) they're not separated properly
2012-06-07 09:00:31 -04:00

82 lines
1.6 KiB
PHP

<?php
namespace Ratchet\WebSocket\Version\Hixie76;
use Ratchet\WebSocket\Version\FrameInterface;
/**
* This does not entirely follow the protocol to spec, but (mostly) works
* Hixie76 probably should not even be supported
*/
class Frame implements FrameInterface {
/**
* @type string
*/
protected $_data = '';
/**
* {@inheritdoc}
*/
public function isCoalesced() {
return (boolean)($this->_data[0] == chr(0) && substr($this->_data, -1) == chr(255));
}
/**
* {@inheritdoc}
*/
public function addBuffer($buf) {
$this->_data .= (string)$buf;
}
/**
* {@inheritdoc}
*/
public function isFinal() {
return true;
}
/**
* {@inheritdoc}
*/
public function isMasked() {
return false;
}
/**
* {@inheritdoc}
*/
public function getOpcode() {
return 1;
}
/**
* {@inheritdoc}
*/
public function getPayloadLength() {
if (!$this->isCoalesced()) {
throw new \UnderflowException('Not enough of the message has been buffered to determine the length of the payload');
}
return strlen($this->_data) - 2;
}
/**
* {@inheritdoc}
*/
public function getMaskingKey() {
return '';
}
/**
* {@inheritdoc}
*/
public function getPayload() {
if (!$this->isCoalesced()) {
return new \UnderflowException('Not enough data buffered to read payload');
}
return substr($this->_data, 1, strlen($this->_data) - 2);
}
public function extractOverflow() {
return '';
}
}