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p2p/discover: unwrap 4-in-6 UDP source addresses (#29944) 

Fixes an issue where discovery responses were not recognized.
This commit is contained in:
Felix Lange 2024-06-06 15:15:22 +02:00 committed by GitHub
parent 0750cb0c8f
commit 85459e1439
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GPG Key ID: B5690EEEBB952194
2 changed files with 9 additions and 0 deletions
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5
p2p/discover/v4_udp.go
View File

@ -557,6 +557,11 @@ func (t *UDPv4) readLoop(unhandled chan<- ReadPacket) {
} }
func (t *UDPv4) handlePacket(from netip.AddrPort, buf []byte) error { func (t *UDPv4) handlePacket(from netip.AddrPort, buf []byte) error {
// Unwrap IPv4-in-6 source address.
if from.Addr().Is4In6() {
from = netip.AddrPortFrom(netip.AddrFrom4(from.Addr().As4()), from.Port())
}
rawpacket, fromKey, hash, err := v4wire.Decode(buf) rawpacket, fromKey, hash, err := v4wire.Decode(buf)
if err != nil { if err != nil {
t.log.Debug("Bad discv4 packet", "addr", from, "err", err) t.log.Debug("Bad discv4 packet", "addr", from, "err", err)

4
p2p/discover/v5_udp.go
View File

@ -674,6 +674,10 @@ func (t *UDPv5) readLoop() {
// dispatchReadPacket sends a packet into the dispatch loop. // dispatchReadPacket sends a packet into the dispatch loop.
func (t *UDPv5) dispatchReadPacket(from netip.AddrPort, content []byte) bool { func (t *UDPv5) dispatchReadPacket(from netip.AddrPort, content []byte) bool {
// Unwrap IPv4-in-6 source address.
if from.Addr().Is4In6() {
from = netip.AddrPortFrom(netip.AddrFrom4(from.Addr().As4()), from.Port())
}
select { select {
case t.packetInCh <- ReadPacket{content, from}: case t.packetInCh <- ReadPacket{content, from}:
return true return true