QUIC sniffer: Handle zero-filled datagram tails (#6882)

https://github.com/XTLS/Xray-core/pull/6882#pullrequestreview-5395639793 --------- Co-authored-by: 风扇滑翔翼 <Fangliding.fshxy@outlook.com>
2026-10-05 13:28:13 +03:00 · 2026-10-05 03:53:22 +00:00
parent 92f7e72490
commit 5121c28b85
2 changed files with 22 additions and 0 deletions
@@ -146,6 +146,10 @@ func SniffQUIC(b []byte) (*SniffHeader, error) {
 		}

 		restPayload := b[hdrLen+int(packetLen):]
+		// cachedReader can concatenate zero-padded UDP datagrams.
+		for len(restPayload) > 0 && restPayload[0] == 0 {
+			restPayload = restPayload[1:]
+		}
 		if !isQUICInitial { // Skip this packet if it's not initial packet
 			b = restPayload
 			continue