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Order peers by whether they seed. This way clients can chose if they prefer leechers (at the beginning) or leechers (at the end of the list).

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erdgeist 2009-07-14 20:51:14 +00:00
parent d729c88d88
commit bb9650f55e
1 changed files with 22 additions and 11 deletions
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29
trackerlogic.c
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@ -184,7 +184,8 @@ size_t add_peer_to_torrent_and_return_peers( ot_hash hash, ot_peer *peer, PROTO_
static size_t return_peers_all( ot_peerlist *peer_list, char *reply ) { static size_t return_peers_all( ot_peerlist *peer_list, char *reply ) {
unsigned int bucket, num_buckets = 1; unsigned int bucket, num_buckets = 1;
ot_vector * bucket_list = &peer_list->peers; ot_vector * bucket_list = &peer_list->peers;
char * r = reply; size_t result = OT_PEER_COMPARE_SIZE * peer_list->peer_count;
char * r_end = reply + result;
if( OT_PEERLIST_HASBUCKETS(peer_list) ) { if( OT_PEERLIST_HASBUCKETS(peer_list) ) {
num_buckets = bucket_list->size; num_buckets = bucket_list->size;
@ -195,12 +196,16 @@ static size_t return_peers_all( ot_peerlist *peer_list, char *reply ) {
ot_peer * peers = (ot_peer*)bucket_list[bucket].data; ot_peer * peers = (ot_peer*)bucket_list[bucket].data;
size_t peer_count = bucket_list[bucket].size; size_t peer_count = bucket_list[bucket].size;
while( peer_count-- ) { while( peer_count-- ) {
memcpy(r,peers++,OT_PEER_COMPARE_SIZE); if( OT_PEERFLAG(peers) & PEER_FLAG_SEEDING ) {
r+=OT_PEER_COMPARE_SIZE; r_end-=OT_PEER_COMPARE_SIZE;
memcpy(r_end,peers++,OT_PEER_COMPARE_SIZE);
} else {
memcpy(reply,peers++,OT_PEER_COMPARE_SIZE);
reply+=OT_PEER_COMPARE_SIZE;
} }
} }
}
return r - reply; return result;
} }
static size_t return_peers_selection( ot_peerlist *peer_list, size_t amount, char *reply ) { static size_t return_peers_selection( ot_peerlist *peer_list, size_t amount, char *reply ) {
@ -209,7 +214,8 @@ static size_t return_peers_selection( ot_peerlist *peer_list, size_t amount, cha
unsigned int shifted_pc = peer_list->peer_count; unsigned int shifted_pc = peer_list->peer_count;
unsigned int shifted_step = 0; unsigned int shifted_step = 0;
unsigned int shift = 0; unsigned int shift = 0;
char * r = reply; size_t result = OT_PEER_COMPARE_SIZE * amount;
char * r_end = reply + result;
if( OT_PEERLIST_HASBUCKETS(peer_list) ) { if( OT_PEERLIST_HASBUCKETS(peer_list) ) {
num_buckets = bucket_list->size; num_buckets = bucket_list->size;
@ -239,10 +245,15 @@ static size_t return_peers_selection( ot_peerlist *peer_list, size_t amount, cha
bucket_index = ( bucket_index + 1 ) % num_buckets; bucket_index = ( bucket_index + 1 ) % num_buckets;
} }
peer = ((ot_peer*)bucket_list[bucket_index].data) + bucket_offset; peer = ((ot_peer*)bucket_list[bucket_index].data) + bucket_offset;
memcpy(r,peer,OT_PEER_COMPARE_SIZE); if( OT_PEERFLAG(peer) & PEER_FLAG_SEEDING ) {
r+=OT_PEER_COMPARE_SIZE; r_end-=OT_PEER_COMPARE_SIZE;
memcpy(r_end,peer,OT_PEER_COMPARE_SIZE);
} else {
memcpy(reply,peer,OT_PEER_COMPARE_SIZE);
reply+=OT_PEER_COMPARE_SIZE;
} }
return r - reply; }
return result;
} }
/* Compiles a list of random peers for a torrent /* Compiles a list of random peers for a torrent