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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (C) 2014 Named Data Networking Project
* See COPYING for copyright and distribution information.
*/
#ifndef NFD_FACE_TCP_CHANNEL_FACTORY_HPP
#define NFD_FACE_TCP_CHANNEL_FACTORY_HPP
#include "channel-factory.hpp"
#include "tcp-channel.hpp"
namespace nfd {
class TcpChannelFactory : public ChannelFactory
{
public:
/**
* \brief Exception of TcpChannelFactory
*/
struct Error : public ChannelFactory::Error
{
Error(const std::string& what) : ChannelFactory::Error(what) {}
};
/**
* \brief Create TCP-based channel using tcp::Endpoint
*
* tcp::Endpoint is really an alias for boost::asio::ip::tcp::endpoint.
*
* If this method called twice with the same endpoint, only one channel
* will be created. The second call will just retrieve the existing
* channel.
*
* \returns always a valid pointer to a TcpChannel object, an exception
* is thrown if it cannot be created.
*
* \throws TcpChannelFactory::Error
*
* \see http://www.boost.org/doc/libs/1_42_0/doc/html/boost_asio/reference/ip__tcp/endpoint.html
* for details on ways to create tcp::Endpoint
*/
shared_ptr<TcpChannel>
create(const tcp::Endpoint& localEndpoint);
/**
* \brief Create TCP-based channel using specified host and port number
*
* This method will attempt to resolve the provided host and port numbers
* and will throw TcpChannelFactory::Error when channel cannot be created.
*
* Note that this call will **BLOCK** until resolution is done or failed.
*
* \throws TcpChannelFactory::Error
*/
shared_ptr<TcpChannel>
create(const std::string& localHost, const std::string& localPort);
private:
/**
* \brief Look up TcpChannel using specified local endpoint
*
* \returns shared pointer to the existing TcpChannel object
* or empty shared pointer when such channel does not exist
*
* \throws never
*/
shared_ptr<TcpChannel>
find(const tcp::Endpoint& localEndpoint);
private:
typedef std::map< tcp::Endpoint, shared_ptr<TcpChannel> > ChannelMap;
ChannelMap m_channels;
};
} // namespace nfd
#endif // NFD_FACE_TCP_CHANNEL_FACTORY_HPP