/*

Copyright (c) 2003-2014, Arvid Norberg
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
      the documentation and/or other materials provided with the distribution.
    * Neither the name of the author nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

*/

#ifndef TORRENT_IDENTIFY_CLIENT_HPP_INCLUDED
#define TORRENT_IDENTIFY_CLIENT_HPP_INCLUDED

#ifdef _MSC_VER
#pragma warning(push, 1)
#endif

#include <boost/optional.hpp>

#ifdef _MSC_VER
#pragma warning(pop)
#endif

#include "libtorrent/peer_id.hpp"
#include "libtorrent/fingerprint.hpp"
#include "libtorrent/config.hpp"

namespace libtorrent
{

	// This function is declared in the header ``<libtorrent/identify_client.hpp>``. It can can be used
	// to extract a string describing a client version from its peer-id. It will recognize most clients
	// that have this kind of identification in the peer-id.
	TORRENT_EXPORT std::string identify_client(const peer_id& p);

	// Returns an optional fingerprint if any can be identified from the peer id. This can be used
	// to automate the identification of clients. It will not be able to identify peers with non-
	// standard encodings. Only Azureus style, Shadow's style and Mainline style. This function is
	// declared in the header ``<libtorrent/identify_client.hpp>``.
	TORRENT_EXPORT boost::optional<fingerprint> client_fingerprint(peer_id const& p);

}

#endif // TORRENT_IDENTIFY_CLIENT_HPP_INCLUDED