/**
* Websocket handshake.
* @param string $buffer
* @param TcpConnection $connection
* @return int
*/
protected static function dealHandshake($buffer, $connection)
{
// HTTP protocol.
if (0 === strpos($buffer, 'GET')) {
// Find \r\n\r\n.
$heder_end_pos = strpos($buffer, "\r\n\r\n");
if (!$heder_end_pos) {
return 0;
}
// Get Sec-WebSocket-Key.
$Sec_WebSocket_Key = '';
if (preg_match("/Sec-WebSocket-Key: *(.*?)\r\n/i", $buffer, $match)) {
$Sec_WebSocket_Key = $match[1];
} else {
$connection->send("HTTP/1.1 400 Bad Request\r\n\r\n<b>400 Bad Request</b><br>Sec-WebSocket-Key not found.<br>This is a WebSocket service and can not be accessed via HTTP.", true);
$connection->close();
return 0;
}
// Calculation websocket key.
$new_key = base64_encode(sha1($Sec_WebSocket_Key . "258EAFA5-E914-47DA-95CA-C5AB0DC85B11", true));
// Handshake response data.
$handshake_message = "HTTP/1.1 101 Switching Protocols\r\n";
$handshake_message .= "Upgrade: websocket\r\n";
$handshake_message .= "Sec-WebSocket-Version: 13\r\n";
$handshake_message .= "Connection: Upgrade\r\n";
$handshake_message .= "Sec-WebSocket-Accept: " . $new_key . "\r\n\r\n";
// Mark handshake complete..
$connection->websocketHandshake = true;
// Websocket data buffer.
$connection->websocketDataBuffer = '';
// Current websocket frame length.
$connection->websocketCurrentFrameLength = 0;
// Current websocket frame data.
$connection->websocketCurrentFrameBuffer = '';
// Consume handshake data.
$connection->consumeRecvBuffer(strlen($buffer));
// Send handshake response.
$connection->send($handshake_message, true);
// There are data waiting to be sent.
if (!empty($connection->tmpWebsocketData)) {
$connection->send($connection->tmpWebsocketData, true);
$connection->tmpWebsocketData = '';
}
// blob or arraybuffer
if (empty($connection->websocketType)) {
$connection->websocketType = self::BINARY_TYPE_BLOB;
}
// Try to emit onWebSocketConnect callback.
if (isset($connection->onWebSocketConnect)) {
self::parseHttpHeader($buffer);
try {
call_user_func($connection->onWebSocketConnect, $connection, $buffer);
} catch (\Exception $e) {
echo $e;
exit(250);
}
$_GET = $_COOKIE = $_SERVER = array();
}
return 0;
} elseif (0 === strpos($buffer, '<polic')) {
$policy_xml = '<?xml version="1.0"?><cross-domain-policy><site-control permitted-cross-domain-policies="all"/><allow-access-from domain="*" to-ports="*"/></cross-domain-policy>' . "";
$connection->send($policy_xml, true);
$connection->consumeRecvBuffer(strlen($buffer));
return 0;
}
// Bad websocket handshake request.
$connection->send("HTTP/1.1 400 Bad Request\r\n\r\n<b>400 Bad Request</b><br>Invalid handshake data for websocket. ", true);
$connection->close();
return 0;
}
/**
* 处理websocket握手
* @param string $buffer
* @param TcpConnection $connection
* @return int
*/
protected static function dealHandshake($buffer, $connection)
{
// 握手阶段客户端发送HTTP协议
if (0 === strpos($buffer, 'GET')) {
// 判断\r\n\r\n边界
$heder_end_pos = strpos($buffer, "\r\n\r\n");
if (!$heder_end_pos) {
return 0;
}
// 解析Sec-WebSocket-Key
$Sec_WebSocket_Key = '';
if (preg_match("/Sec-WebSocket-Key: *(.*?)\r\n/", $buffer, $match)) {
$Sec_WebSocket_Key = $match[1];
}
$new_key = base64_encode(sha1($Sec_WebSocket_Key . "258EAFA5-E914-47DA-95CA-C5AB0DC85B11", true));
// 握手返回的数据
$new_message = "HTTP/1.1 101 Switching Protocols\r\n";
$new_message .= "Upgrade: websocket\r\n";
$new_message .= "Sec-WebSocket-Version: 13\r\n";
$new_message .= "Connection: Upgrade\r\n";
$new_message .= "Sec-WebSocket-Accept: " . $new_key . "\r\n\r\n";
$connection->handshake = true;
$connection->consumeRecvBuffer(strlen($buffer));
$connection->send($new_message, true);
$connection->protocolData = array('binaryType' => self::BINARY_TYPE_BLOB);
// 如果有设置onWebSocketConnect回调，尝试执行
if (isset($connection->onWebSocketConnect)) {
self::parseHttpHeader($buffer);
try {
call_user_func($connection->onWebSocketConnect, $connection, $buffer);
} catch (\Exception $e) {
echo $e;
}
$_GET = $_COOKIE = $_SERVER = array();
}
return 0;
} elseif (0 === strpos($buffer, '<polic')) {
if ('>' != $buffer[strlen($buffer) - 1]) {
return 0;
}
$policy_xml = '<?xml version="1.0"?><cross-domain-policy><site-control permitted-cross-domain-policies="all"/><allow-access-from domain="*" to-ports="*"/></cross-domain-policy>' . "";
$connection->send($policy_xml, true);
$connection->consumeRecvBuffer(strlen($buffer));
return 0;
}
// 出错
$connection->close();
return 0;
}
/**
* 处理websocket握手
* @param string $buffer
* @param TcpConnection $connection
* @return int
*/
protected static function dealHandshake($buffer, $connection)
{
// 握手阶段客户端发送HTTP协议
if (0 === strpos($buffer, 'GET')) {
// 判断\r\n\r\n边界
$heder_end_pos = strpos($buffer, "\r\n\r\n");
if (!$heder_end_pos) {
return 0;
}
// 解析Sec-WebSocket-Key
$Sec_WebSocket_Key = '';
if (preg_match("/Sec-WebSocket-Key: *(.*?)\r\n/", $buffer, $match)) {
$Sec_WebSocket_Key = $match[1];
} else {
$connection->send("HTTP/1.1 400 Bad Request\r\n\r\n<b>400 Bad Request</b><br>Sec-WebSocket-Key not found", true);
$connection->close();
return 0;
}
// 握手的key
$new_key = base64_encode(sha1($Sec_WebSocket_Key . "258EAFA5-E914-47DA-95CA-C5AB0DC85B11", true));
// 握手返回的数据
$handshake_message = "HTTP/1.1 101 Switching Protocols\r\n";
$handshake_message .= "Upgrade: websocket\r\n";
$handshake_message .= "Sec-WebSocket-Version: 13\r\n";
$handshake_message .= "Connection: Upgrade\r\n";
$handshake_message .= "Sec-WebSocket-Accept: " . $new_key . "\r\n\r\n";
// 标记已经握手
$connection->websocketHandshake = true;
// 缓冲fin为0的包，直到fin为1
$connection->websocketDataBuffer = '';
// 当前数据帧的长度，可能是fin为0的帧，也可能是fin为1的帧
$connection->websocketCurrentFrameLength = 0;
// 当前帧的数据缓冲
$connection->websocketCurrentFrameBuffer = '';
// 消费掉握手数据，不触发onMessage
$connection->consumeRecvBuffer(strlen($buffer));
// 发送握手数据
$connection->send($handshake_message, true);
// 握手后有数据要发送
if (!empty($connection->tmpWebsocketData)) {
$connection->send($connection->tmpWebsocketData, true);
$connection->tmpWebsocketData = '';
}
// blob or arraybuffer
$connection->websocketType = self::BINARY_TYPE_BLOB;
// 如果有设置onWebSocketConnect回调，尝试执行
if (isset($connection->onWebSocketConnect)) {
self::parseHttpHeader($buffer);
try {
call_user_func($connection->onWebSocketConnect, $connection, $buffer);
} catch (\Exception $e) {
echo $e;
}
$_GET = $_COOKIE = $_SERVER = array();
}
return 0;
} elseif (0 === strpos($buffer, '<polic')) {
$policy_xml = '<?xml version="1.0"?><cross-domain-policy><site-control permitted-cross-domain-policies="all"/><allow-access-from domain="*" to-ports="*"/></cross-domain-policy>' . "";
$connection->send($policy_xml, true);
$connection->consumeRecvBuffer(strlen($buffer));
return 0;
}
// 出错
$connection->send("HTTP/1.1 400 Bad Request\r\n\r\n<b>400 Bad Request</b><br>Invalid handshake data for websocket. ", true);
$connection->close();
return 0;
}
