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don't return self IP address

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This commit is contained in:
Michał Adamski 2020-12-08 14:28:17 +01:00
parent e3d1d82f5b
commit b900c2862f
2 changed files with 26 additions and 22 deletions
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2
main.go
View file

@ -57,7 +57,7 @@ func announce(c *gin.Context) {
default: default:
PutPeer(c.Param("room"), req.InfoHash, req.IP, req.Port, req.IsSeeding()) PutPeer(c.Param("room"), req.InfoHash, req.IP, req.Port, req.IsSeeding())
} }
peersv4, peersv6, numSeeders, numLeechers := GetPeers(c.Param("room"), req.InfoHash, req.Numwant, req.IsSeeding()) peersv4, peersv6, numSeeders, numLeechers := GetPeers(c.Param("room"), req.InfoHash, req.IP, req.Port, req.IsSeeding(), req.Numwant)
interval := 120 interval := 120
if numSeeders == 0 { if numSeeders == 0 {
interval /= 2 interval /= 2

46
storage.go
View file

@ -43,7 +43,7 @@ func serialize(ip string, port uint16) serializedPeer {
return serializedPeer(append(net.ParseIP(ip), byte(port>>8), byte(port))) return serializedPeer(append(net.ParseIP(ip), byte(port>>8), byte(port)))
} }
func PutPeer(room, infoHash string, ip string, port uint16, seeding bool) { func PutPeer(room, infoHash, ip string, port uint16, seeding bool) {
h := sha1.Sum([]byte(room + infoHash)) h := sha1.Sum([]byte(room + infoHash))
shard := shards[shardIndex(h)] shard := shards[shardIndex(h)]
shard.Lock() shard.Lock()
@ -53,29 +53,29 @@ func PutPeer(room, infoHash string, ip string, port uint16, seeding bool) {
leechers: make(map[serializedPeer]int64), leechers: make(map[serializedPeer]int64),
} }
} }
serialized := serialize(ip, port) client := serialize(ip, port)
if seeding { if seeding {
shard.swarms[h].seeders[serialized] = time.Now().Unix() shard.swarms[h].seeders[client] = time.Now().Unix()
} else { } else {
shard.swarms[h].leechers[serialized] = time.Now().Unix() shard.swarms[h].leechers[client] = time.Now().Unix()
} }
shard.Unlock() shard.Unlock()
} }
func DeletePeer(room, infoHash string, ip string, port uint16) { func DeletePeer(room, infoHash, ip string, port uint16) {
h := sha1.Sum([]byte(room + infoHash)) h := sha1.Sum([]byte(room + infoHash))
shard := shards[shardIndex(h)] shard := shards[shardIndex(h)]
shard.Lock() shard.Lock()
if _, ok := shard.swarms[h]; !ok { if _, ok := shard.swarms[h]; !ok {
return return
} }
serialized := serialize(ip, port) client := serialize(ip, port)
delete(shard.swarms[h].seeders, serialized) delete(shard.swarms[h].seeders, client)
delete(shard.swarms[h].leechers, serialized) delete(shard.swarms[h].leechers, client)
shard.Unlock() shard.Unlock()
} }
func GraduateLeecher(room, infoHash string, ip string, port uint16) { func GraduateLeecher(room, infoHash, ip string, port uint16) {
h := sha1.Sum([]byte(room + infoHash)) h := sha1.Sum([]byte(room + infoHash))
shard := shards[shardIndex(h)] shard := shards[shardIndex(h)]
shard.Lock() shard.Lock()
@ -85,38 +85,42 @@ func GraduateLeecher(room, infoHash string, ip string, port uint16) {
leechers: make(map[serializedPeer]int64), leechers: make(map[serializedPeer]int64),
} }
} }
serialized := serialize(ip, port) client := serialize(ip, port)
shard.swarms[h].seeders[serialized] = time.Now().Unix() shard.swarms[h].seeders[client] = time.Now().Unix()
delete(shard.swarms[h].leechers, serialized) delete(shard.swarms[h].leechers, client)
shard.Unlock() shard.Unlock()
} }
func GetPeers(room, infoHash string, numWant uint, seeding bool) (peersv4, peersv6 []byte, numSeeders, numLeechers int) { func GetPeers(room, infoHash, ip string, port uint16, seeding bool, numWant uint) (peersv4, peersv6 []byte, numSeeders, numLeechers int) {
h := sha1.Sum([]byte(room + infoHash)) h := sha1.Sum([]byte(room + infoHash))
shard := shards[shardIndex(h)] shard := shards[shardIndex(h)]
shard.RLock() shard.RLock()
client := serialize(ip, port)
// seeders don't need other seeders // seeders don't need other seeders
if !seeding { if !seeding {
for serialized := range shard.swarms[h].seeders { for peer := range shard.swarms[h].seeders {
if numWant == 0 { if numWant == 0 {
break break
} }
if bytes.HasPrefix([]byte(serialized), v4InV6Prefix) { if bytes.HasPrefix([]byte(peer), v4InV6Prefix) {
peersv4 = append(peersv4, serialized[12:]...) peersv4 = append(peersv4, peer[12:]...)
} else { } else {
peersv6 = append(peersv6, serialized...) peersv6 = append(peersv6, peer...)
} }
numWant-- numWant--
} }
} }
for serialized := range shard.swarms[h].leechers { for peer := range shard.swarms[h].leechers {
if peer == client {
continue
}
if numWant == 0 { if numWant == 0 {
break break
} }
if bytes.HasPrefix([]byte(serialized), v4InV6Prefix) { if bytes.HasPrefix([]byte(peer), v4InV6Prefix) {
peersv4 = append(peersv4, serialized[12:]...) peersv4 = append(peersv4, peer[12:]...)
} else { } else {
peersv6 = append(peersv6, serialized...) peersv6 = append(peersv6, peer...)
} }
numWant-- numWant--
} }