/** \file ResolvSocket.h
 ** \date  2005-03-24
 ** \author grymse@alhem.net
**/
/*
Copyright (C) 2004-2010  Anders Hedstrom

This library is made available under the terms of the GNU GPL, with
the additional exemption that compiling, linking, and/or using OpenSSL
is allowed.

If you would like to use this library in a closed-source application,
a separate license agreement is available. For information about
the closed-source license agreement for the C++ sockets library,
please visit http://www.alhem.net/Sockets/license.html and/or
email license@alhem.net.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
#ifndef _SOCKETS_ResolvSocket_H
#define _SOCKETS_ResolvSocket_H
#include "sockets-config.h"
#ifdef ENABLE_RESOLVER
#include "TcpSocket.h"
#include <map>

#ifdef SOCKETS_NAMESPACE
namespace SOCKETS_NAMESPACE
{
#endif

class Mutex;

/** Async DNS resolver socket.
  \ingroup async */
class ResolvSocket : public TcpSocket
{
  typedef std::map<std::string, /* type */
          std::map<std::string, std::string> > cache_t; /* host, result */
  typedef std::map<std::string, /* type */
          std::map<std::string, time_t> > timeout_t; /* host, time */

public:
  ResolvSocket(ISocketHandler&);
  ResolvSocket(ISocketHandler&, Socket *parent, const std::string& host, port_t port, bool ipv6 = false);
  ResolvSocket(ISocketHandler&, Socket *parent, ipaddr_t);
#ifdef ENABLE_IPV6
  ResolvSocket(ISocketHandler&, Socket *parent, in6_addr&);
#endif
  ~ResolvSocket();

  void OnAccept() {
    m_bServer = true;
  }
  void OnLine(const std::string& line);
  void OnDetached();
  void OnDelete();

  void SetId(int x) {
    m_resolv_id = x;
  }
  int GetId() {
    return m_resolv_id;
  }

  void OnConnect();

#ifdef ENABLE_IPV6
  void SetResolveIpv6(bool x = true) {
    m_resolve_ipv6 = x;
  }
#endif

private:
  ResolvSocket(const ResolvSocket& s) : TcpSocket(s) {} // copy constructor
  ResolvSocket& operator=(const ResolvSocket& ) {
    return *this;  // assignment operator
  }

  std::string m_query;
  std::string m_data;
  bool m_bServer;
  Socket *m_parent;
  socketuid_t m_parent_uid;
  int m_resolv_id;
  std::string m_resolv_host;
  port_t m_resolv_port;
  ipaddr_t m_resolv_address;
#ifdef ENABLE_IPV6
  bool m_resolve_ipv6;
  in6_addr m_resolv_address6;
#endif
  static cache_t m_cache;
  static timeout_t m_cache_to;
  static Mutex m_cache_mutex;
  bool m_cached;
};




#ifdef SOCKETS_NAMESPACE
}
#endif

#endif // ENABLE_RESOLVER
#endif // _SOCKETS_ResolvSocket_H

