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(trunk libT) #4592 "Algorithm bug in bandwidth allocation" -- apply patch from Algorithmus

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This commit is contained in:
Jordan Lee 2011-10-25 16:56:19 +00:00
parent 5beed282de
commit 82595e8ad8
1 changed files with 3 additions and 7 deletions
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10
libtransmission/bandwidth.c
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@ -207,9 +207,10 @@ phaseOne( tr_ptrArray * peerArray, tr_direction dir )
* and/or peers that can use it */
n = peerCount;
dbgmsg( "%d peers to go round-robin for %s", n, (dir==TR_UP?"upload":"download") );
i = n ? tr_cryptoWeakRandInt( n ) : 0; /* pick a random starting point */
while( n > 0 )
{
i = n ? tr_cryptoWeakRandInt( n ) : 0; /* pick a peer at random */
/* value of 3000 bytes chosen so that when using uTP we'll send a full-size
* frame right away and leave enough buffered data for the next frame to go
* out in a timely manner. */
@ -219,18 +220,13 @@ phaseOne( tr_ptrArray * peerArray, tr_direction dir )
dbgmsg( "peer #%d of %d used %d bytes in this pass", i, n, bytesUsed );
if( bytesUsed == (int)increment )
++i;
else {
if( bytesUsed != (int)increment ) {
/* peer is done writing for now; move it to the end of the list */
tr_peerIo * pio = peers[i];
peers[i] = peers[n-1];
peers[n-1] = pio;
--n;
}
if( i >= n )
i = 0;
}
}