cwinfo/yggdrasil-go
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don't use TTL

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This commit is contained in:
Arceliar
2018-06-07 20:18:13 -05:00
parent fe12e1509a
commit 84c13fac90
3 changed files with 10 additions and 11 deletions
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12
src/yggdrasil/peer.go
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@@ -204,15 +204,14 @@ func (p *peer) handleTraffic(packet []byte, pTypeLen int) {
// Drop traffic until the peer manages to send us at least one good switchMsg
return
}
ttl, ttlLen := wire_decode_uint64(packet[pTypeLen:])
ttlBegin := pTypeLen
_, ttlLen := wire_decode_uint64(packet[pTypeLen:])
ttlEnd := pTypeLen + ttlLen
coords, coordLen := wire_decode_coords(packet[ttlEnd:])
coordEnd := ttlEnd + coordLen
if coordEnd == len(packet) {
return
} // No payload
toPort, newTTL := p.core.switchTable.lookup(coords, ttl)
toPort, _ := p.core.switchTable.lookup(coords, 0)
if toPort == p.port {
return
}
@@ -220,13 +219,6 @@ func (p *peer) handleTraffic(packet []byte, pTypeLen int) {
if to == nil {
return
}
// This mutates the packet in-place if the length of the TTL changes!
ttlSlice := wire_encode_uint64(newTTL)
newTTLLen := len(ttlSlice)
shift := ttlLen - newTTLLen
copy(packet[shift:], packet[:pTypeLen])
copy(packet[ttlBegin+shift:], ttlSlice)
packet = packet[shift:]
to.sendPacket(packet)
}