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minor cleanups to peer-msgs

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This commit is contained in:
Charles Kerr 2008-03-01 14:09:18 +00:00
parent 10c7e66cf3
commit 0788bc37ed
1 changed files with 80 additions and 72 deletions
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152
libtransmission/peer-msgs.c
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@ -60,28 +60,36 @@ enum
TR_LTEP_PEX = 1,
MAX_REQUEST_BYTE_COUNT = (16 * 1024), /* drop requests who want too much */
/* drop requests who want too much */
MAX_REQUEST_BYTE_COUNT = (16 * 1024),
MIN_CHOKE_PERIOD_SEC = (10),
/* idle seconds before we send a keepalive */
KEEPALIVE_INTERVAL_SECS = 90,
PEX_INTERVAL = (60 * 1000), /* msec between calls to sendPex() */
PEER_PULSE_INTERVAL = (100), /* msec between calls to pulse() */
RATE_PULSE_INTERVAL = (250), /* msec between calls to ratePulse() */
PEX_INTERVAL = (60 * 1000), /* msec between sendPex() calls */
PEER_PULSE_INTERVAL = (100), /* msec between pulse() calls */
RATE_PULSE_INTERVAL = (250), /* msec between ratePulse() calls */
MAX_QUEUE_SIZE = (100),
MAX_OUTBUF_SIZE = (1024),
/* Fast Peers Extension constants */
MAX_FAST_ALLOWED_COUNT = 10, /* max. number of pieces we fast-allow to another peer */
MAX_FAST_ALLOWED_THRESHOLD = 10, /* max threshold for allowing fast-pieces requests */
/* (fast peers) max number of pieces we fast-allow to another peer */
MAX_FAST_ALLOWED_COUNT = 10,
/* (fast peers) max threshold for allowing fast-pieces requests */
MAX_FAST_ALLOWED_THRESHOLD = 10,
QUEUED_REQUEST_TTL_SECS = 20,
SENT_REQUEST_TTL_SECS = 90
};
/**
*** REQUEST MANAGEMENT
**/
enum
{
AWAITING_BT_LENGTH,
@ -125,7 +133,9 @@ reqListReserve( struct request_list * list, uint16_t max )
if( list->max < max )
{
list->max = max;
list->requests = tr_renew( struct peer_request, list->requests, list->max );
list->requests = tr_renew( struct peer_request,
list->requests,
list->max );
}
}
@ -218,22 +228,40 @@ reqListPrune( struct request_list * list,
list->count = k;
reqListReserve( pruned, pruned->count + p );
memcpy( pruned->requests + pruned->count, prune, sizeof(struct peer_request) * p );
memcpy( pruned->requests + pruned->count,
prune,
sizeof(struct peer_request) * p );
pruned->count += p;
}
/**
***
**/
/* this is raw, unchanged data from the peer regarding
* the current message that it's sending us. */
struct tr_incoming
{
uint32_t length; /* includes the +1 for id length */
uint8_t id;
uint32_t length; /* includes the +1 for id length */
struct peer_request blockReq; /* metadata for incoming blocks */
struct evbuffer * block; /* piece data for incoming blocks */
};
struct tr_peermsgs
{
unsigned int peerSentBitfield : 1;
unsigned int peerSupportsPex : 1;
unsigned int clientSentLtepHandshake : 1;
unsigned int peerSentLtepHandshake : 1;
unsigned int sendingBlock : 1;
uint8_t state;
uint8_t ut_pex_id;
uint16_t pexCount;
uint32_t maxActiveRequests;
uint32_t minActiveRequests;
tr_peer * info;
tr_handle * handle;
@ -244,6 +272,7 @@ struct tr_peermsgs
struct evbuffer * outBlock; /* buffer of all the current piece message */
struct evbuffer * outMessages; /* buffer of all the non-piece messages */
struct request_list peerAskedFor;
struct request_list peerAskedForFast;
struct request_list clientAskedFor;
@ -256,26 +285,12 @@ struct tr_peermsgs
time_t lastReqAddedAt;
time_t clientSentPexAt;
time_t clientSentAnythingAt;
time_t clientSentPieceDataAt;
time_t peerSentPieceDataAt;
unsigned int peerSentBitfield : 1;
unsigned int peerSupportsPex : 1;
unsigned int clientSentLtepHandshake : 1;
unsigned int peerSentLtepHandshake : 1;
unsigned int sendingBlock : 1;
tr_bitfield * clientAllowedPieces;
tr_bitfield * peerAllowedPieces;
tr_bitfield * clientSuggestedPieces;
uint8_t state;
uint8_t ut_pex_id;
uint16_t pexCount;
uint32_t maxActiveRequests;
uint32_t minActiveRequests;
struct tr_incoming incoming;
@ -458,15 +473,11 @@ isPieceInteresting( const tr_peermsgs * peer,
int piece )
{
const tr_torrent * torrent = peer->torrent;
if( torrent->info.pieces[piece].dnd ) /* we don't want it */
return FALSE;
if( tr_cpPieceIsComplete( torrent->completion, piece ) ) /* we have it */
return FALSE;
if( !tr_bitfieldHas( peer->info->have, piece ) ) /* peer doesn't have it */
return FALSE;
if( tr_bitfieldHas( peer->info->banned, piece ) ) /* peer is banned */
return FALSE;
return TRUE;
return ( ( !torrent->info.pieces[piece].dnd ) /* we want it */
&& ( !tr_cpPieceIsComplete( torrent->completion, piece ) ) /* !have */
&& ( tr_bitfieldHas( peer->info->have, piece ) ) /* peer has it */
&& ( !tr_bitfieldHas( peer->info->banned, piece ) ) ); /* !banned */
}
/* "interested" means we'll ask for piece data if they unchoke us */
@ -520,8 +531,6 @@ updateInterest( tr_peermsgs * msgs )
fireNeedReq( msgs );
}
#define MIN_CHOKE_PERIOD_SEC 10
static void
cancelAllRequestsToClientExceptFast( tr_peermsgs * msgs )
{
@ -717,12 +726,12 @@ expireOldRequests( tr_peermsgs * msgs )
static void
pumpRequestQueue( tr_peermsgs * msgs )
{
struct peer_request req;
const int max = msgs->maxActiveRequests;
const int min = msgs->minActiveRequests;
const time_t now = time( NULL );
int count = msgs->clientAskedFor.count;
int sent = 0;
int count = msgs->clientAskedFor.count;
struct peer_request req;
if( count > min )
return;
@ -973,13 +982,13 @@ parseLtepHandshake( tr_peermsgs * msgs, int len, struct evbuffer * inbuf )
static void
parseUtPex( tr_peermsgs * msgs, int msglen, struct evbuffer * inbuf )
{
int gotval = 0;
int loaded = 0;
uint8_t * tmp = tr_new( uint8_t, msglen );
tr_benc val, *sub;
tr_peerIoReadBytes( msgs->io, inbuf, tmp, msglen );
if( tr_torrentAllowsPex( msgs->torrent )
&& (( gotval = !tr_bencLoad( tmp, msglen, &val, NULL )))
&& (( loaded = !tr_bencLoad( tmp, msglen, &val, NULL )))
&& (( sub = tr_bencDictFindType( &val, "added", TYPE_STR ))))
{
const int n = sub->val.s.i / 6 ;
@ -990,7 +999,7 @@ parseUtPex( tr_peermsgs * msgs, int msglen, struct evbuffer * inbuf )
(uint8_t*)sub->val.s.s, n );
}
if( gotval )
if( loaded )
tr_bencFree( &val );
tr_free( tmp );
}
@ -1079,7 +1088,8 @@ readBtId( tr_peermsgs * msgs, struct evbuffer * inbuf, size_t inlen )
static void
updatePeerProgress( tr_peermsgs * msgs )
{
msgs->info->progress = tr_bitfieldCountTrueBits( msgs->info->have ) / (float)msgs->torrent->info.pieceCount;
msgs->info->progress = tr_bitfieldCountTrueBits( msgs->info->have )
/ (float)msgs->torrent->info.pieceCount;
dbgmsg( msgs, "peer progress is %f", msgs->info->progress );
updateInterest( msgs );
firePeerProgress( msgs );
@ -1088,7 +1098,7 @@ updatePeerProgress( tr_peermsgs * msgs )
static int
clientCanSendFastBlock( const tr_peermsgs * msgs UNUSED )
{
/* We can't send a fast piece if a peer has more than MAX_FAST_ALLOWED_THRESHOLD pieces */
/* don't send a fast piece if peer has MAX_FAST_ALLOWED_THRESHOLD pieces */
if( tr_bitfieldCountTrueBits( msgs->info->have ) > MAX_FAST_ALLOWED_THRESHOLD )
return FALSE;
@ -1184,11 +1194,12 @@ clientGotBlock( tr_peermsgs * msgs, const uint8_t * block, const struct peer_req
static void
clientGotBytes( tr_peermsgs * msgs, uint32_t byteCount )
{
const time_t now = time( NULL );
tr_torrent * tor = msgs->torrent;
tor->activityDate = tr_date( );
tor->downloadedCur += byteCount;
msgs->peerSentPieceDataAt = time( NULL );
msgs->info->pieceDataActivityDate = time( NULL );
msgs->peerSentPieceDataAt = now;
msgs->info->pieceDataActivityDate = now;
msgs->info->credit += (int)(byteCount * SWIFT_REPAYMENT_RATIO);
tr_rcTransferred( msgs->info->rcToClient, byteCount );
tr_rcTransferred( tor->download, byteCount );
@ -1322,28 +1333,28 @@ readBtMessage( tr_peermsgs * msgs, struct evbuffer * inbuf, size_t inlen )
}
case BT_REQUEST: {
struct peer_request req;
tr_peerIoReadUint32( msgs->io, inbuf, &req.index );
tr_peerIoReadUint32( msgs->io, inbuf, &req.offset );
tr_peerIoReadUint32( msgs->io, inbuf, &req.length );
dbgmsg( msgs, "got Request: %u:%u->%u", req.index, req.offset, req.length );
peerMadeRequest( msgs, &req );
struct peer_request r;
tr_peerIoReadUint32( msgs->io, inbuf, &r.index );
tr_peerIoReadUint32( msgs->io, inbuf, &r.offset );
tr_peerIoReadUint32( msgs->io, inbuf, &r.length );
dbgmsg( msgs, "got Request: %u:%u->%u", r.index, r.offset, r.length );
peerMadeRequest( msgs, &r );
break;
}
case BT_CANCEL: {
struct peer_request req;
tr_peerIoReadUint32( msgs->io, inbuf, &req.index );
tr_peerIoReadUint32( msgs->io, inbuf, &req.offset );
tr_peerIoReadUint32( msgs->io, inbuf, &req.length );
dbgmsg( msgs, "got a Cancel %u:%u->%u", req.index, req.offset, req.length );
reqListRemove( &msgs->peerAskedForFast, &req );
reqListRemove( &msgs->peerAskedFor, &req );
struct peer_request r;
tr_peerIoReadUint32( msgs->io, inbuf, &r.index );
tr_peerIoReadUint32( msgs->io, inbuf, &r.offset );
tr_peerIoReadUint32( msgs->io, inbuf, &r.length );
dbgmsg( msgs, "got a Cancel %u:%u->%u", r.index, r.offset, r.length );
reqListRemove( &msgs->peerAskedForFast, &r );
reqListRemove( &msgs->peerAskedFor, &r );
break;
}
case BT_PIECE:
assert( 0 ); /* should be handled elsewhere! */
assert( 0 ); /* handled elsewhere! */
break;
case BT_PORT:
@ -1352,10 +1363,9 @@ readBtMessage( tr_peermsgs * msgs, struct evbuffer * inbuf, size_t inlen )
break;
case BT_SUGGEST: {
const tr_bitfield * bt = tr_cpPieceBitfield( msgs->torrent->completion );
dbgmsg( msgs, "Got a BT_SUGGEST" );
tr_peerIoReadUint32( msgs->io, inbuf, &ui32 );
if( tr_bitfieldHas( bt, ui32 ) )
if( tr_cpPieceIsComplete( msgs->torrent->completion, ui32 ) )
tr_bitfieldAdd( msgs->clientSuggestedPieces, ui32 );
break;
}
@ -1376,12 +1386,12 @@ readBtMessage( tr_peermsgs * msgs, struct evbuffer * inbuf, size_t inlen )
break;
case BT_REJECT: {
struct peer_request req;
struct peer_request r;
dbgmsg( msgs, "Got a BT_REJECT" );
tr_peerIoReadUint32( msgs->io, inbuf, &req.index );
tr_peerIoReadUint32( msgs->io, inbuf, &req.offset );
tr_peerIoReadUint32( msgs->io, inbuf, &req.length );
reqListRemove( &msgs->clientAskedFor, &req );
tr_peerIoReadUint32( msgs->io, inbuf, &r.index );
tr_peerIoReadUint32( msgs->io, inbuf, &r.offset );
tr_peerIoReadUint32( msgs->io, inbuf, &r.length );
reqListRemove( &msgs->clientAskedFor, &r );
break;
}
@ -1413,11 +1423,12 @@ readBtMessage( tr_peermsgs * msgs, struct evbuffer * inbuf, size_t inlen )
static void
peerGotBytes( tr_peermsgs * msgs, uint32_t byteCount )
{
const time_t now = time( NULL );
tr_torrent * tor = msgs->torrent;
tor->activityDate = tr_date( );
tor->uploadedCur += byteCount;
msgs->clientSentPieceDataAt = time( NULL );
msgs->info->pieceDataActivityDate = time( NULL );
msgs->clientSentPieceDataAt = now;
msgs->info->pieceDataActivityDate = now;
msgs->info->credit -= byteCount;
tr_rcTransferred( msgs->info->rcToPeer, byteCount );
tr_rcTransferred( tor->upload, byteCount );
@ -1451,10 +1462,7 @@ reassignBytesToCorrupt( tr_peermsgs * msgs, uint32_t byteCount )
tor->corruptCur += byteCount;
/* decrement the `downloaded' field */
if( tor->downloadedCur >= byteCount )
tor->downloadedCur -= byteCount;
else
tor->downloadedCur = 0;
tor->downloadedCur -= MIN( tor->downloadedCur, byteCount );
}