97 lines
1.9 KiB
C++
97 lines
1.9 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/**
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* Copyright (C) 2014 Named Data Networking Project
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* See COPYING for copyright and distribution information.
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*/
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#ifndef NFD_FACE_ETHERNET_FACE_HPP
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#define NFD_FACE_ETHERNET_FACE_HPP
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#include "ethernet.hpp"
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#include "face.hpp"
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#ifndef HAVE_PCAP
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#error "Cannot include this file when pcap is not available"
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#endif
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// forward declarations
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struct pcap;
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typedef pcap pcap_t;
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namespace nfd {
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/**
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* \brief Implementation of Face abstraction that uses raw
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* Ethernet frames as underlying transport mechanism
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*/
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class EthernetFace : public Face
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{
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public:
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/**
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* \brief EthernetFace-related error
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*/
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struct Error : public Face::Error
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{
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Error(const std::string& what) : Face::Error(what) {}
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};
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EthernetFace(const shared_ptr<boost::asio::posix::stream_descriptor>& socket,
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const ethernet::Endpoint& interface,
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const ethernet::Address& address);
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virtual
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~EthernetFace();
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/// send an Interest
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virtual void
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sendInterest(const Interest& interest);
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/// send a Data
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virtual void
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sendData(const Data& data);
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/**
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* \brief Close the face
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*
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* This terminates all communication on the face and cause
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* onFail() method event to be invoked
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*/
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virtual void
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close();
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private:
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void
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pcapInit();
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void
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setPacketFilter(const char* filterString);
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void
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sendPacket(const ndn::Block& block);
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void
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handleRead(const boost::system::error_code& error,
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size_t nBytesRead);
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void
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processErrorCode(const boost::system::error_code& error);
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ethernet::Address
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getInterfaceAddress() const;
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size_t
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getInterfaceMtu() const;
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private:
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shared_ptr<boost::asio::posix::stream_descriptor> m_socket;
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ethernet::Endpoint m_interface;
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ethernet::Address m_sourceAddress;
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ethernet::Address m_destAddress;
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size_t m_interfaceMtu;
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pcap_t* m_pcap;
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};
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} // namespace nfd
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#endif // NFD_FACE_ETHERNET_FACE_HPP
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