Sockets/ResolvSocket.h

   1 /** \file ResolvSocket.h
   2  **     \date  2005-03-24
   3  **     \author grymse@alhem.net
   4 **/
   5 /*
   6 Copyright (C) 2004-2007  Anders Hedstrom
   7
   8 This library is made available under the terms of the GNU GPL.
   9
  10 If you would like to use this library in a closed-source application,
  11 a separate license agreement is available. For information about
  12 the closed-source license agreement for the C++ sockets library,
  13 please visit http://www.alhem.net/Sockets/license.html and/or
  14 email license@alhem.net.
  15
  16 This program is free software; you can redistribute it and/or
  17 modify it under the terms of the GNU General Public License
  18 as published by the Free Software Foundation; either version 2
  19 of the License, or (at your option) any later version.
  20
  21 This program is distributed in the hope that it will be useful,
  22 but WITHOUT ANY WARRANTY; without even the implied warranty of
  23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24 GNU General Public License for more details.
  25
  26 You should have received a copy of the GNU General Public License
  27 along with this program; if not, write to the Free Software
  28 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  29 */
  30 #ifndef _SOCKETS_ResolvSocket_H
  31 #define _SOCKETS_ResolvSocket_H
  32 #include "sockets-config.h"
  33 #ifdef ENABLE_RESOLVER
  34 #include "TcpSocket.h"
  35 #include <map>
  36
  37 #ifdef SOCKETS_NAMESPACE
  38 namespace SOCKETS_NAMESPACE {
  39 #endif
  40
  41 class Mutex;
  42
  43 /** Async DNS resolver socket.
  44         \ingroup async */
  45 class ResolvSocket : public TcpSocket
  46 {
  47         typedef std::map<std::string, /* type */
  48                         std::map<std::string, std::string> > cache_t; /* host, result */
  49         typedef std::map<std::string, /* type */
  50                         std::map<std::string, time_t> > timeout_t; /* host, time */
  51
  52 public:
  53         ResolvSocket(ISocketHandler&);
  54         ResolvSocket(ISocketHandler&, Socket *parent, const std::string& host, port_t port, bool ipv6 = false);
  55         ResolvSocket(ISocketHandler&, Socket *parent, ipaddr_t);
  56 #ifdef ENABLE_IPV6
  57         ResolvSocket(ISocketHandler&, Socket *parent, in6_addr&);
  58 #endif
  59         ~ResolvSocket();
  60
  61         void OnAccept() { m_bServer = true; }
  62         void OnLine(const std::string& line);
  63         void OnDetached();
  64         void OnDelete();
  65
  66         void SetId(int x) { m_resolv_id = x; }
  67         int GetId() { return m_resolv_id; }
  68
  69         void OnConnect();
  70
  71 #ifdef ENABLE_IPV6
  72         void SetResolveIpv6(bool x = true) { m_resolve_ipv6 = x; }
  73 #endif
  74
  75 private:
  76         ResolvSocket(const ResolvSocket& s) : TcpSocket(s) {} // copy constructor
  77         ResolvSocket& operator=(const ResolvSocket& ) { return *this; } // assignment operator
  78
  79         std::string m_query;
  80         std::string m_data;
  81         bool m_bServer;
  82         Socket *m_parent;
  83         int m_resolv_id;
  84         std::string m_resolv_host;
  85         port_t m_resolv_port;
  86         ipaddr_t m_resolv_address;
  87 #ifdef ENABLE_IPV6
  88         bool m_resolve_ipv6;
  89         in6_addr m_resolv_address6;
  90 #endif
  91         static cache_t m_cache;
  92         static timeout_t m_cache_to;
  93         static Mutex m_cache_mutex;
  94         bool m_cached;
  95 };
  96
  97
  98
  99
 100 #ifdef SOCKETS_NAMESPACE
 101 }
 102 #endif
 103
 104 #endif // ENABLE_RESOLVER
 105 #endif // _SOCKETS_ResolvSocket_H
 106