transmission/libtransmission/peer-common.h

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/*
* This file Copyright (C) Mnemosyne LLC
*
* This file is licensed by the GPL version 2. Works owned by the
* Transmission project are granted a special exemption to clause 2(b)
* so that the bulk of its code can remain under the MIT license.
* This exemption does not extend to derived works not owned by
* the Transmission project.
*
* $Id$
*/
#ifndef __TRANSMISSION__
#error only libtransmission should #include this header.
#endif
#ifndef TR_PEER_H
#define TR_PEER_H
/**
* @addtogroup peers Peers
* @{
*/
/**
*** Fields common to webseed and bittorrent peers
**/
#include "transmission.h"
struct tr_bitfield;
enum
{
/** when we're making requests from another peer,
batch them together to send enough requests to
meet our bandwidth goals for the next N seconds */
REQUEST_BUF_SECS = 10,
/** this is the maximum size of a block request.
most bittorrent clients will reject requests
larger than this size. */
MAX_BLOCK_SIZE = ( 1024 * 16 )
};
/**
*** Peer Publish / Subscribe
**/
typedef enum
{
TR_PEER_CLIENT_GOT_BLOCK,
TR_PEER_CLIENT_GOT_CHOKE,
TR_PEER_CLIENT_GOT_DATA,
TR_PEER_CLIENT_GOT_ALLOWED_FAST,
TR_PEER_CLIENT_GOT_SUGGEST,
TR_PEER_CLIENT_GOT_PORT,
TR_PEER_CLIENT_GOT_REJ,
TR_PEER_CLIENT_GOT_BITFIELD,
TR_PEER_CLIENT_GOT_HAVE,
TR_PEER_CLIENT_GOT_HAVE_ALL,
TR_PEER_CLIENT_GOT_HAVE_NONE,
TR_PEER_PEER_GOT_DATA,
TR_PEER_ERROR
}
PeerEventType;
typedef struct
{
PeerEventType eventType;
uint32_t pieceIndex; /* for GOT_BLOCK, GOT_HAVE, CANCEL, ALLOWED, SUGGEST */
struct tr_bitfield * bitfield; /* for GOT_BITFIELD */
uint32_t offset; /* for GOT_BLOCK */
uint32_t length; /* for GOT_BLOCK + GOT_DATA */
int err; /* errno for GOT_ERROR */
bool wasPieceData; /* for GOT_DATA */
tr_port port; /* for GOT_PORT */
}
tr_peer_event;
extern const tr_peer_event TR_PEER_EVENT_INIT;
struct tr_peer;
typedef void tr_peer_callback( struct tr_peer * peer,
const tr_peer_event * event,
void * client_data );
/** Update the tr_peer.progress field based on the 'have' bitset. */
void tr_peerUpdateProgress( tr_torrent * tor, struct tr_peer * );
#ifdef WIN32
#define EMSGSIZE WSAEMSGSIZE
#endif
/** @} */
#endif