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//
// generic/stream_protocol.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2014 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef BOOST_ASIO_GENERIC_STREAM_PROTOCOL_HPP
#define BOOST_ASIO_GENERIC_STREAM_PROTOCOL_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include <boost/asio/detail/config.hpp>
#include <typeinfo>
#include <boost/asio/basic_socket_iostream.hpp>
#include <boost/asio/basic_stream_socket.hpp>
#include <boost/asio/detail/socket_types.hpp>
#include <boost/asio/detail/throw_exception.hpp>
#include <boost/asio/generic/basic_endpoint.hpp>
#include <boost/asio/detail/push_options.hpp>
namespace boost {
namespace asio {
namespace generic {
/// Encapsulates the flags needed for a generic stream-oriented socket.
/**
* The boost::asio::generic::stream_protocol class contains flags necessary for
* stream-oriented sockets of any address family and protocol.
*
* @par Examples
* Constructing using a native address family and socket protocol:
* @code stream_protocol p(AF_INET, IPPROTO_TCP); @endcode
* Constructing from a specific protocol type:
* @code stream_protocol p(boost::asio::ip::tcp::v4()); @endcode
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Safe.
*
* @par Concepts:
* Protocol.
*/
class stream_protocol
{
public:
/// Construct a protocol object for a specific address family and protocol.
stream_protocol(int address_family, int socket_protocol)
: family_(address_family),
protocol_(socket_protocol)
{
}
/// Construct a generic protocol object from a specific protocol.
/**
* @throws @c bad_cast Thrown if the source protocol is not stream-oriented.
*/
template <typename Protocol>
stream_protocol(const Protocol& source_protocol)
: family_(source_protocol.family()),
protocol_(source_protocol.protocol())
{
if (source_protocol.type() != type())
{
std::bad_cast ex;
boost::asio::detail::throw_exception(ex);
}
}
/// Obtain an identifier for the type of the protocol.
int type() const
{
return BOOST_ASIO_OS_DEF(SOCK_STREAM);
}
/// Obtain an identifier for the protocol.
int protocol() const
{
return protocol_;
}
/// Obtain an identifier for the protocol family.
int family() const
{
return family_;
}
/// Compare two protocols for equality.
friend bool operator==(const stream_protocol& p1, const stream_protocol& p2)
{
return p1.family_ == p2.family_ && p1.protocol_ == p2.protocol_;
}
/// Compare two protocols for inequality.
friend bool operator!=(const stream_protocol& p1, const stream_protocol& p2)
{
return !(p1 == p2);
}
/// The type of an endpoint.
typedef basic_endpoint<stream_protocol> endpoint;
/// The generic socket type.
typedef basic_stream_socket<stream_protocol> socket;
#if !defined(BOOST_ASIO_NO_IOSTREAM)
/// The generic socket iostream type.
typedef basic_socket_iostream<stream_protocol> iostream;
#endif // !defined(BOOST_ASIO_NO_IOSTREAM)
private:
int family_;
int protocol_;
};
} // namespace generic
} // namespace asio
} // namespace boost
#include <boost/asio/detail/pop_options.hpp>
#endif // BOOST_ASIO_GENERIC_STREAM_PROTOCOL_HPP
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