/**
* Connects to the remote server
*
* @return bool whether the connection can be persistent
* @throws HTTP_Request2_Exception
*/
protected function connect()
{
$secure = 0 == strcasecmp($this->request->getUrl()->getScheme(), 'https');
$tunnel = HTTP_Request2::METHOD_CONNECT == $this->request->getMethod();
$headers = $this->request->getHeaders();
$reqHost = $this->request->getUrl()->getHost();
if (!($reqPort = $this->request->getUrl()->getPort())) {
$reqPort = $secure ? 443 : 80;
}
$httpProxy = $socksProxy = false;
if (!($host = $this->request->getConfig('proxy_host'))) {
$host = $reqHost;
$port = $reqPort;
} else {
if (!($port = $this->request->getConfig('proxy_port'))) {
throw new HTTP_Request2_LogicException('Proxy port not provided', HTTP_Request2_Exception::MISSING_VALUE);
}
if ('http' == ($type = $this->request->getConfig('proxy_type'))) {
$httpProxy = true;
} elseif ('socks5' == $type) {
$socksProxy = true;
} else {
throw new HTTP_Request2_NotImplementedException("Proxy type '{$type}' is not supported");
}
}
if ($tunnel && !$httpProxy) {
throw new HTTP_Request2_LogicException("Trying to perform CONNECT request without proxy", HTTP_Request2_Exception::MISSING_VALUE);
}
if ($secure && !in_array('ssl', stream_get_transports())) {
throw new HTTP_Request2_LogicException('Need OpenSSL support for https:// requests', HTTP_Request2_Exception::MISCONFIGURATION);
}
// RFC 2068, section 19.7.1: A client MUST NOT send the Keep-Alive
// connection token to a proxy server...
if ($httpProxy && !$secure && !empty($headers['connection']) && 'Keep-Alive' == $headers['connection']) {
$this->request->setHeader('connection');
}
$keepAlive = '1.1' == $this->request->getConfig('protocol_version') && empty($headers['connection']) || !empty($headers['connection']) && 'Keep-Alive' == $headers['connection'];
$options = array();
if ($secure || $tunnel) {
foreach ($this->request->getConfig() as $name => $value) {
if ('ssl_' == substr($name, 0, 4) && null !== $value) {
if ('ssl_verify_host' == $name) {
if ($value) {
$options['CN_match'] = $reqHost;
}
} else {
$options[substr($name, 4)] = $value;
}
}
}
ksort($options);
}
// Use global request timeout if given, see feature requests #5735, #8964
if ($timeout = $this->request->getConfig('timeout')) {
$deadline = time() + $timeout;
} else {
$deadline = null;
}
// Changing SSL context options after connection is established does *not*
// work, we need a new connection if options change
$remote = (!$secure || $httpProxy || $socksProxy ? 'tcp://' : 'ssl://') . $host . ':' . $port;
$socketKey = $remote . ($secure && $httpProxy || $socksProxy ? "->{$reqHost}:{$reqPort}" : '') . (empty($options) ? '' : ':' . serialize($options));
unset($this->socket);
// We use persistent connections and have a connected socket?
// Ensure that the socket is still connected, see bug #16149
if ($keepAlive && !empty(self::$sockets[$socketKey]) && !self::$sockets[$socketKey]->eof()) {
$this->socket =& self::$sockets[$socketKey];
} else {
if ($socksProxy) {
require_once 'HTTP/Request2/SOCKS5.php';
$this->socket = new HTTP_Request2_SOCKS5($remote, $this->request->getConfig('connect_timeout'), $options, $this->request->getConfig('proxy_user'), $this->request->getConfig('proxy_password'));
// handle request timeouts ASAP
$this->socket->setDeadline($deadline, $this->request->getConfig('timeout'));
$this->socket->connect($reqHost, $reqPort);
if (!$secure) {
$conninfo = "tcp://{$reqHost}:{$reqPort} via {$remote}";
} else {
$this->socket->enableCrypto();
$conninfo = "ssl://{$reqHost}:{$reqPort} via {$remote}";
}
} elseif ($secure && $httpProxy && !$tunnel) {
$this->establishTunnel();
$conninfo = "ssl://{$reqHost}:{$reqPort} via {$remote}";
} else {
$this->socket = new HTTP_Request2_SocketWrapper($remote, $this->request->getConfig('connect_timeout'), $options);
}
$this->request->setLastEvent('connect', empty($conninfo) ? $remote : $conninfo);
self::$sockets[$socketKey] =& $this->socket;
}
$this->socket->setDeadline($deadline, $this->request->getConfig('timeout'));
return $keepAlive;
}
