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p2p/discover: copy buffer before sending read errors to unhandled

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This commit is contained in:
Weixie Cui 2026-05-06 21:35:39 +08:00
parent aaa2b66285
commit 9ee20fbf7f
1 changed files with 3 additions and 1 deletions
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4
p2p/discover/v4_udp.go
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@ -555,8 +555,10 @@ func (t *UDPv4) readLoop(unhandled chan<- ReadPacket) {
if err := t.handlePacket(from, buf[:nbytes]); err != nil && unhandled == nil { if err := t.handlePacket(from, buf[:nbytes]); err != nil && unhandled == nil {
t.log.Debug("Bad discv4 packet", "addr", from, "err", err) t.log.Debug("Bad discv4 packet", "addr", from, "err", err)
} else if err != nil && unhandled != nil { } else if err != nil && unhandled != nil {
packet := make([]byte, nbytes)
copy(packet, buf[:nbytes])
select { select {
case unhandled <- ReadPacket{buf[:nbytes], from}: case unhandled <- ReadPacket{packet, from}:
default: default:
} }
} }