udp-socket-impl.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2007 INRIA
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * 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
 *
 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
 */
#ifndef UDP_SOCKET_IMPL_H
#define UDP_SOCKET_IMPL_H

#include <stdint.h>
#include <queue>
#include "ns3/callback.h"
#include "ns3/traced-callback.h"
#include "ns3/socket.h"
#include "ns3/ptr.h"
#include "ns3/ipv4-address.h"
#include "ns3/udp-socket.h"
#include "ns3/ipv4-interface.h"
#include "icmpv4.h"

namespace ns3 {

class Ipv4EndPoint;
class Ipv6EndPoint;
class Node;
class Packet;
class UdpL4Protocol;
class Ipv6Header;
class Ipv6Interface;

class UdpSocketImpl : public UdpSocket
{
public:
  static TypeId GetTypeId (void);
  UdpSocketImpl ();
  virtual ~UdpSocketImpl ();

  void SetNode (Ptr<Node> node);
  void SetUdp (Ptr<UdpL4Protocol> udp);

  virtual enum SocketErrno GetErrno (void) const;
  virtual enum SocketType GetSocketType (void) const;
  virtual Ptr<Node> GetNode (void) const;
  virtual int Bind (void);
  virtual int Bind6 (void);
  virtual int Bind (const Address &address);
  virtual int Close (void);
  virtual int ShutdownSend (void);
  virtual int ShutdownRecv (void);
  virtual int Connect (const Address &address);
  virtual int Listen (void);
  virtual uint32_t GetTxAvailable (void) const;
  virtual int Send (Ptr<Packet> p, uint32_t flags);
  virtual int SendTo (Ptr<Packet> p, uint32_t flags, const Address &address);
  virtual uint32_t GetRxAvailable (void) const;
  virtual Ptr<Packet> Recv (uint32_t maxSize, uint32_t flags);
  virtual Ptr<Packet> RecvFrom (uint32_t maxSize, uint32_t flags,
                                Address &fromAddress);
  virtual int GetSockName (Address &address) const; 
  virtual int GetPeerName (Address &address) const;
  virtual int MulticastJoinGroup (uint32_t interfaceIndex, const Address &groupAddress);
  virtual int MulticastLeaveGroup (uint32_t interfaceIndex, const Address &groupAddress);
  virtual void BindToNetDevice (Ptr<NetDevice> netdevice);
  virtual bool SetAllowBroadcast (bool allowBroadcast);
  virtual bool GetAllowBroadcast () const;
  virtual void Ipv6JoinGroup (Ipv6Address address, Socket::Ipv6MulticastFilterMode filterMode, std::vector<Ipv6Address> sourceAddresses);

private:
  // Attributes set through UdpSocket base class 
  virtual void SetRcvBufSize (uint32_t size);
  virtual uint32_t GetRcvBufSize (void) const;
  virtual void SetIpMulticastTtl (uint8_t ipTtl);
  virtual uint8_t GetIpMulticastTtl (void) const;
  virtual void SetIpMulticastIf (int32_t ipIf);
  virtual int32_t GetIpMulticastIf (void) const;
  virtual void SetIpMulticastLoop (bool loop);
  virtual bool GetIpMulticastLoop (void) const;
  virtual void SetMtuDiscover (bool discover);
  virtual bool GetMtuDiscover (void) const;


  friend class UdpSocketFactory;
  // invoked by Udp class

  int FinishBind (void);

  void ForwardUp (Ptr<Packet> packet, Ipv4Header header, uint16_t port, Ptr<Ipv4Interface> incomingInterface);

  void ForwardUp6 (Ptr<Packet> packet, Ipv6Header header, uint16_t port, Ptr<Ipv6Interface> incomingInterface);

  void Destroy (void);

  void Destroy6 (void);

  void DeallocateEndPoint (void);

  int DoSend (Ptr<Packet> p);
  int DoSendTo (Ptr<Packet> p, Ipv4Address daddr, uint16_t dport, uint8_t tos);
  int DoSendTo (Ptr<Packet> p, Ipv6Address daddr, uint16_t dport);

  void ForwardIcmp (Ipv4Address icmpSource, uint8_t icmpTtl, uint8_t icmpType, uint8_t icmpCode, uint32_t icmpInfo);

  void ForwardIcmp6 (Ipv6Address icmpSource, uint8_t icmpTtl, uint8_t icmpType, uint8_t icmpCode, uint32_t icmpInfo);

  // Connections to other layers of TCP/IP
  Ipv4EndPoint*       m_endPoint;   
  Ipv6EndPoint*       m_endPoint6;  
  Ptr<Node>           m_node;       
  Ptr<UdpL4Protocol> m_udp;         
  Callback<void, Ipv4Address,uint8_t,uint8_t,uint8_t,uint32_t> m_icmpCallback;  
  Callback<void, Ipv6Address,uint8_t,uint8_t,uint8_t,uint32_t> m_icmpCallback6; 

  Address m_defaultAddress; 
  uint16_t m_defaultPort;   
  TracedCallback<Ptr<const Packet> > m_dropTrace; 

  mutable enum SocketErrno m_errno;           
  bool                     m_shutdownSend;    
  bool                     m_shutdownRecv;    
  bool                     m_connected;       
  bool                     m_allowBroadcast;  

  std::queue<std::pair<Ptr<Packet>, Address> > m_deliveryQueue; 
  uint32_t m_rxAvailable;                   

  // Socket attributes
  uint32_t m_rcvBufSize;    
  uint8_t m_ipMulticastTtl; 
  int32_t m_ipMulticastIf;  
  bool m_ipMulticastLoop;   
  bool m_mtuDiscover;       
};

} // namespace ns3

#endif /* UDP_SOCKET_IMPL_H */