premiere-libtorrent/include/libtorrent/bandwidth_queue_entry.hpp

/*

Copyright (c) 2007-2014, Arvid Norberg
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      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

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*/

#ifndef TORRENT_BANDWIDTH_QUEUE_ENTRY_HPP_INCLUDED
#define TORRENT_BANDWIDTH_QUEUE_ENTRY_HPP_INCLUDED

#include <boost/intrusive_ptr.hpp>
#include "libtorrent/bandwidth_limit.hpp"
#include "libtorrent/bandwidth_socket.hpp"

namespace libtorrent {

struct TORRENT_EXTRA_EXPORT bw_request
{
	bw_request(boost::intrusive_ptr<bandwidth_socket> const& pe
		, int blk, int prio);

	boost::intrusive_ptr<bandwidth_socket> peer;
	// 1 is normal prio
	int priority;
	// the number of bytes assigned to this request so far
	int assigned;
	// once assigned reaches this, we dispatch the request function
	int request_size;

	// the max number of rounds for this request to survive
	// this ensures that requests gets responses at very low
	// rate limits, when the requested size would take a long
	// time to satisfy
	int ttl;

	// loops over the bandwidth channels and assigns bandwidth
	// from the most limiting one
	int assign_bandwidth();

	enum { max_bandwidth_channels = 5 };
	// we don't actually support more than 5 channels per peer
	bandwidth_channel* channel[max_bandwidth_channels];
};

}

#endif