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//
// generic/seq_packet_protocol.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 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 ASIO_GENERIC_SEQ_PACKET_PROTOCOL_HPP
#define ASIO_GENERIC_SEQ_PACKET_PROTOCOL_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <typeinfo>
#include "asio/basic_seq_packet_socket.hpp"
#include "asio/detail/socket_types.hpp"
#include "asio/detail/throw_exception.hpp"
#include "asio/generic/basic_endpoint.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace generic {
/// Encapsulates the flags needed for a generic sequenced packet socket.
/**
* The asio::generic::seq_packet_protocol class contains flags necessary
* for seq_packet-oriented sockets of any address family and protocol.
*
* @par Examples
* Constructing using a native address family and socket protocol:
* @code seq_packet_protocol p(AF_INET, IPPROTO_SCTP); @endcode
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Safe.
*
* @par Concepts:
* Protocol.
*/
class seq_packet_protocol
{
public:
/// Construct a protocol object for a specific address family and protocol.
seq_packet_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 based around
* sequenced packets.
*/
template <typename Protocol>
seq_packet_protocol(const Protocol& source_protocol)
: family_(source_protocol.family()),
protocol_(source_protocol.protocol())
{
if (source_protocol.type() != type())
{
std::bad_cast ex;
asio::detail::throw_exception(ex);
}
}
/// Obtain an identifier for the type of the protocol.
int type() const
{
return ASIO_OS_DEF(SOCK_SEQPACKET);
}
/// 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 seq_packet_protocol& p1,
const seq_packet_protocol& p2)
{
return p1.family_ == p2.family_ && p1.protocol_ == p2.protocol_;
}
/// Compare two protocols for inequality.
friend bool operator!=(const seq_packet_protocol& p1,
const seq_packet_protocol& p2)
{
return !(p1 == p2);
}
/// The type of an endpoint.
typedef basic_endpoint<seq_packet_protocol> endpoint;
/// The generic socket type.
typedef basic_seq_packet_socket<seq_packet_protocol> socket;
private:
int family_;
int protocol_;
};
} // namespace generic
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_GENERIC_SEQ_PACKET_PROTOCOL_HPP
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