/**
* Perform the handshake
* $user - The user/client that requests the websocket connection
* $headers - an array containing the HTTP headers sent
*/
function doHandshake(MWebsocketUser $user, $headers)
{
$origin = $headers['Origin'];
$host = $headers['Host'];
$status = $headers['status'];
$statusFields = explode(' ', $status);
$resource = $statusFields[1];
$upgrade = "HTTP/1.1 101 WebSocket Protocol Handshake\r\n" . "Upgrade: WebSocket\r\n" . "Connection: Upgrade\r\n" . "Sec-WebSocket-Protocol: " . $app . "\r\n" . "Sec-WebSocket-Origin: " . $origin . "\r\n" . "Sec-WebSocket-Location: ws://" . $host . $statusFields[1] . "\r\n" . "\r\n" . "\r\n";
socket_write($user->socket(), $upgrade, strlen($upgrade));
$user->setHandshakeDone();
$user->setProtocol(new MWebsocketProtocol76());
return true;
}
/**
* Perform the handshake
*
* $user - the user/client that initiated connection
* $headers - an array of HTTP headers sent by the user
*/
function doHandshake(MWebsocketUser $user, $headers)
{
// Grab the security keys
$strkey1 = $headers['Sec-WebSocket-Key1'];
$strkey2 = $headers['Sec-WebSocket-Key2'];
// Grab the other items needed to reply
$data = $headers['body'];
$origin = $headers['Origin'];
$host = $headers['Host'];
$status = $headers['status'];
$statusFields = explode(' ', $status);
$resource = $statusFields[1];
// Compute the hash from the keys provided
$pattern = '/[^\\d]*/';
$replacement = '';
$numkey1 = preg_replace($pattern, $replacement, $strkey1);
$numkey2 = preg_replace($pattern, $replacement, $strkey2);
$pattern = '/[^ ]*/';
$replacement = '';
$spaces1 = strlen(preg_replace($pattern, $replacement, $strkey1));
$spaces2 = strlen(preg_replace($pattern, $replacement, $strkey2));
if ($spaces1 == 0 || $spaces2 == 0 || fmod($numkey1, $spaces1) != 0 || fmod($numkey2, $spaces2) != 0) {
echo "failed handshake\n";
return false;
}
$ctx = hash_init('md5');
// Pack the has for tranmission
hash_update($ctx, pack("N", $numkey1 / $spaces1));
hash_update($ctx, pack("N", $numkey2 / $spaces2));
hash_update($ctx, $data);
$hash_data = hash_final($ctx, true);
// Send the upgrade response
if (isset($headers['Sec-WebSocket-Protocol'])) {
$upgrade = "HTTP/1.1 101 WebSocket Protocol Handshake\r\n" . "Upgrade: WebSocket\r\n" . "Connection: Upgrade\r\n" . "Sec-WebSocket-Protocol: " . $app . "\r\n" . "Sec-WebSocket-Origin: " . $origin . "\r\n" . "Sec-WebSocket-Location: ws://" . $host . $statusFields[1] . "\r\n" . "\r\n" . $hash_data;
} else {
$upgrade = "HTTP/1.1 101 WebSocket Protocol Handshake\r\n" . "Upgrade: WebSocket\r\n" . "Connection: Upgrade\r\n" . "Sec-WebSocket-Origin: " . $origin . "\r\n" . "Sec-WebSocket-Location: ws://" . $host . $statusFields[1] . "\r\n" . "\r\n" . $hash_data;
}
socket_write($user->socket(), $upgrade, strlen($upgrade));
$user->setHandshakeDone();
// $user->setTranscoder(new BasicTranscoder());
$user->setProtocol(new MWebsocketProtocol76());
return true;
}
/**
* Perform the HyBi Handshake operation
*
* $user - The user/client that is trying to establish connection
* $headers - An array of headers sent in the Websocket connect request
*/
function doHandshake(MWebsocketUser $user, $headers)
{
// Get the key sent from the client
$strkey1 = $headers['Sec-WebSocket-Key'];
// Append the Magic ID
$keyPlusMagic = $strkey1 . "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
// Get the raw sha1 then encode it
$shaAcceptKey = sha1($keyPlusMagic, true);
$socketAccept = base64_encode($shaAcceptKey);
// Grab the rest of the headers needed
if (isset($headers['Origin'])) {
$origin = $headers['Origin'];
}
if (isset($headers["Sec-WebSocket-Origin"])) {
$origin = $headers["Sec-WebSocket-Origin"];
}
$host = $headers['Host'];
$status = $headers['status'];
$statusFields = explode(' ', $status);
$resource = $statusFields[1];
if (isset($headers['Sec-WebSocket-Extensions'])) {
$exts = explode(',', $headers['Sec-WebSocket-Extensions']);
}
// Now create the upgrade response
$upgrade = "HTTP/1.1 101 Switching Protocols\r\n" . "Upgrade: WebSocket\r\n" . "Connection: Upgrade\r\n" . "Sec-WebSocket-Version: 8\r\n";
if (isset($origin)) {
$upgrade .= "Sec-WebSocket-Origin: " . $origin . "\r\n";
}
if (isset($headers['Sec-WebSocket-Protocol'])) {
$upgrade = $upgrade . "Sec-WebSocket-Protocol: " . $app . "\r\n";
}
if (isset($headers['Sec-WebSocket-Extensions'])) {
//@TODO - need to process the Extensions and figure out what is supported
//$upgrade = $upgrade."Sec-WebSocket-Extensions: ". $exts[0] . "\r\n";
}
$upgrade = $upgrade . "Sec-WebSocket-Accept: " . $socketAccept . "\r\n" . "\r\n";
//socket_write($user->socket(),$upgrade.chr(0),strlen($upgrade.chr(0)));
socket_write($user->socket(), $upgrade, strlen($upgrade));
$user->setHandshakeDone();
$user->setProtocol(new MWebsocketProtocolHyBi());
return true;
}
/**
* Takes the appropriate action to close the connection down
*/
private function sendFatalErrorResponse(MWebsocketUser $user)
{
// Just close the socket if in handhake mode
if (!$user->handshakeDone()) {
MWebsocket::getInstance($this->_controller)->disconnect($user->socket());
return;
} else {
//send a status code and then close
}
}
