Initial support to parse QUIC packets.

16 files changed, 374 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8fa04bcf..ce4fe1a2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1101,6 +1101,7 @@ set(NETDISSECT_SOURCE_LIST_C
     print-pppoe.c
     print-pptp.c
     print-ptp.c
+    print-quic.c
     print-radius.c
     print-raw.c
     print-resp.c
diff --git a/Makefile.in b/Makefile.in
index b5c78ee2..3900e699 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -201,6 +201,7 @@ LIBNETDISSECT_SRC=\
 	print-pppoe.c \
 	print-pptp.c \
 	print-ptp.c \
+	print-quic.c \
 	print-radius.c \
 	print-raw.c \
 	print-resp.c \
diff --git a/netdissect.h b/netdissect.h
index 3eb576f7..53bc842f 100644
--- a/netdissect.h
+++ b/netdissect.h
@@ -291,6 +291,7 @@ extern void nd_pop_all_packet_info(netdissect_options *);
 #define PT_PTP		18	/* PTP */
 #define PT_SOMEIP	19	/* Autosar SOME/IP Protocol */
 #define PT_DOMAIN	20	/* Domain Name System (DNS) */
+#define PT_QUIC		21	/* QUIC */
 
 #define ND_MIN(a,b) ((a)>(b)?(b):(a))
 #define ND_MAX(a,b) ((b)>(a)?(b):(a))
@@ -692,6 +693,8 @@ extern int print_unknown_data(netdissect_options *, const u_char *, const char *
 extern void ptp_print(netdissect_options *, const u_char *, u_int);
 extern const char *q922_string(netdissect_options *, const u_char *, u_int);
 extern void q933_print(netdissect_options *, const u_char *, u_int);
+extern int quic_detect(netdissect_options *, const u_char *, const u_int);
+extern void quic_print(netdissect_options *, const u_char *, const u_int);
 extern void radius_print(netdissect_options *, const u_char *, u_int);
 extern void resp_print(netdissect_options *, const u_char *, u_int);
 extern void rip_print(netdissect_options *, const u_char *, u_int);
diff --git a/print-quic.c b/print-quic.c
new file mode 100644
index 00000000..d6963b77
--- /dev/null
+++ b/print-quic.c
@@ -0,0 +1,289 @@
+/*
+ * Copyright (c) 2021 Apple, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *  3. The names of the authors may not be used to endorse or promote
+ *     products derived from this software without specific prior
+ *     written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/* \summary: QUIC Protocol printer */
+/* specification: https://www.rfc-editor.org/rfc/rfc9000.txt */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "netdissect-stdinc.h"
+#include "netdissect-alloc.h"
+#include "netdissect.h"
+#include "extract.h"
+
+#define QUIC_MAX_CID_LENGTH	20
+
+typedef uint8_t quic_cid[QUIC_MAX_CID_LENGTH];
+
+struct quic_cid_array {
+	uint8_t cid[QUIC_MAX_CID_LENGTH];
+	uint8_t length;
+};
+
+enum quic_lh_packet_type {
+	QUIC_LH_TYPE_INITIAL = 0,
+	QUIC_LH_TYPE_0RTT = 1,
+	QUIC_LH_TYPE_HANDSHAKE = 2,
+	QUIC_LH_TYPE_RETRY = 3
+};
+
+static void
+hexprint(netdissect_options *ndo, const uint8_t *cp, size_t len)
+{
+	size_t i;
+
+	for (i = 0; i < len; i++)
+		ND_PRINT("%02x", cp[i]);
+}
+
+#define QUIC_CID_LIST_MAX	512
+
+static struct quic_cid_array quic_cid_array[QUIC_CID_LIST_MAX];
+
+static struct quic_cid_array *
+lookup_quic_cid(const u_char *cid, size_t length)
+{
+	for (unsigned int i = 0; i < QUIC_CID_LIST_MAX; i++) {
+		if (quic_cid_array[i].length > length) {
+			continue;
+		}
+		if (quic_cid_array[i].length == 0) {
+			break;
+		}
+		if (memcmp(quic_cid_array[i].cid, cid,
+			   quic_cid_array[i].length) == 0) {
+			/*
+			 * Swap the entries so that it behaves like an
+			 * LRU cache.
+			 */
+			if (i != 0) {
+				struct quic_cid_array tmp = quic_cid_array[i];
+				quic_cid_array[i] = quic_cid_array[0];
+				quic_cid_array[0] = tmp;
+			}
+
+			return &quic_cid_array[0];
+		}
+	}
+
+	return NULL;
+}
+
+static void
+register_quic_cid(const quic_cid cid, uint8_t length)
+{
+	static uint16_t next_cid = 0;
+
+	if (length == 0 ||
+	    lookup_quic_cid(cid, length) != NULL) {
+		return;
+	}
+	memcpy(&quic_cid_array[next_cid].cid, cid, QUIC_MAX_CID_LENGTH);
+	quic_cid_array[next_cid].length = length;
+	next_cid = (next_cid + 1) % QUIC_CID_LIST_MAX;
+}
+
+/* Returns 1 if the first octet looks like a QUIC packet. */
+int
+quic_detect(netdissect_options *ndo, const u_char *p, const u_int len)
+{
+	uint8_t first_octet;
+
+	if (len < 1)
+		return 0;
+	first_octet = GET_U_1(p);
+	/* All QUIC packets must have the Fixed Bit set to 1. */
+	if ((first_octet & 0x40) == 0x40)
+		return 1;
+	else
+		return 0;
+}
+
+/* Extracts the variable length integer (see RFC 9000 section 16). */
+static inline uint64_t
+get_be_vli(netdissect_options *ndo, const u_char *p, uint8_t *out_length)
+{
+	uint64_t v;
+	uint8_t prefix;
+	uint8_t length;
+
+	v = GET_U_1(p);
+	p++;
+	prefix = (uint8_t)v >> 6;
+	length = 1 << prefix;
+	if (out_length != NULL)
+		*out_length = length;
+	v = v & 0x3f;
+	while (length > 1) {
+		v = (v << 8) + GET_U_1(p);
+		p++;
+		length--;
+	}
+
+	return v;
+}
+
+#define GET_BE_VLI(p, l) get_be_vli(ndo, (const u_char *)(p), l)
+
+static const u_char *
+quic_print_packet(netdissect_options *ndo, const u_char *bp, const u_char *end)
+{
+	uint8_t first_octet = 0;
+	uint8_t packet_type = 0;
+	uint32_t version = 0;
+	quic_cid dcid = {0};
+	quic_cid scid = {0};
+	uint8_t dcil = 0; /* DCID length */
+	uint8_t scil = 0; /* SCID length */
+	uint8_t vli_length = 0;
+	uint8_t *token = NULL;
+	uint64_t token_length = 0;
+
+	first_octet = GET_U_1(bp);
+	bp += 1;
+	if (first_octet & 0x80) {
+		/* Long Header */
+		packet_type = (first_octet >> 4) & 0x02;
+		version = GET_BE_U_4(bp);
+		bp += 4;
+
+		if (version == 0)
+			ND_PRINT(", version negotiation");
+		else if (packet_type == QUIC_LH_TYPE_INITIAL)
+			ND_PRINT(", initial");
+		else if (packet_type == QUIC_LH_TYPE_0RTT)
+			ND_PRINT(", 0-rtt");
+		else if (packet_type == QUIC_LH_TYPE_HANDSHAKE)
+			ND_PRINT(", handshake");
+		else if (packet_type == QUIC_LH_TYPE_RETRY)
+			ND_PRINT(", retry");
+		if (version != 0 && version != 1)
+			ND_PRINT(", v%x", version);
+		dcil = GET_U_1(bp);
+		bp += 1;
+		if (dcil > 0  && dcil <= QUIC_MAX_CID_LENGTH) {
+			memset(dcid, 0, sizeof(dcid));
+			GET_CPY_BYTES(&dcid, bp, dcil);
+			bp += dcil;
+			ND_PRINT(", dcid ");
+			hexprint(ndo, dcid, dcil);
+			register_quic_cid(dcid, dcil);
+		}
+		scil = GET_U_1(bp);
+		bp += 1;
+		if (scil > 0 && scil <= QUIC_MAX_CID_LENGTH) {
+			memset(scid, 0, sizeof(dcid));
+			GET_CPY_BYTES(&scid, bp, scil);
+			bp += scil;
+			ND_PRINT(", scid ");
+			hexprint(ndo, scid, scil);
+			register_quic_cid(scid, scil);
+		}
+		if (version == 0) {
+			/* Version Negotiation packet */
+			while (bp < end) {
+				if (!ND_TTEST_4(bp)) {
+					nd_print_trunc(ndo);
+					bp = end;
+				} else {
+					uint32_t vn_version = GET_BE_U_4(bp);
+					bp += 4;
+					ND_PRINT(", version 0x%x", vn_version);
+				}
+			}
+		} else {
+			if (packet_type == QUIC_LH_TYPE_INITIAL) {
+				token_length = GET_BE_VLI(bp, &vli_length);
+				bp += vli_length;
+				if (token_length > 0 && token_length < 1000) {
+					token = nd_malloc(ndo, (size_t)token_length);
+					GET_CPY_BYTES(token, bp, (size_t)token_length);
+					bp += token_length;
+					ND_PRINT(", token ");
+					hexprint(ndo, token, (size_t)token_length);
+				}
+			}
+			if (packet_type == QUIC_LH_TYPE_RETRY) {
+				ND_PRINT(", token ");
+				if (end > bp && end - bp > 16) {
+					token_length = end - bp - 16;
+					token = nd_malloc(ndo, (size_t)token_length);
+					GET_CPY_BYTES(token, bp, (size_t)token_length);
+					bp += token_length;
+					hexprint(ndo, token, (size_t)token_length);
+				} else {
+					nd_print_trunc(ndo);
+				}
+				bp = end;
+			} else {
+				/* Initial/Handshake/0-RTT */
+				uint64_t payload_length =
+					GET_BE_VLI(bp, &vli_length);
+				bp += vli_length;
+				ND_PRINT(", length %" PRIu64, payload_length);
+				if (!ND_TTEST_LEN(bp, payload_length)) {
+					nd_print_trunc(ndo);
+					bp = end;
+				} else
+					bp += payload_length;
+			}
+		}
+	} else {
+		/* Short Header */
+		ND_PRINT(", protected");
+		if (ND_TTEST_LEN(bp, 16)) {
+			struct quic_cid_array *cid_array =
+				lookup_quic_cid(bp, end - bp);
+			if (cid_array != NULL) {
+				ND_PRINT(", dcid ");
+				hexprint(ndo, cid_array->cid,
+					 cid_array->length);
+			}
+		} else {
+			nd_print_trunc(ndo);
+		}
+		bp = end;
+	}
+
+	return bp;
+}
+
+void
+quic_print(netdissect_options *ndo, const u_char *bp, const u_int len)
+{
+	const uint8_t *end = bp + len;
+
+	ndo->ndo_protocol = "quic";
+	nd_print_protocol(ndo);
+
+	while (bp < end) {
+		bp = quic_print_packet(ndo, bp, end);
+		/*
+		 * Skip all zero bytes which are
+		 * considered padding.
+		 */
+		while (ND_TTEST_1(bp) && GET_U_1(bp) == 0)
+			bp++;
+	}
+}
diff --git a/print-udp.c b/print-udp.c
index 4fb0a591..d5891de6 100644
--- a/print-udp.c
+++ b/print-udp.c
@@ -463,6 +463,9 @@ udp_print(netdissect_options *ndo, const u_char *bp, u_int length,
 			/* over_tcp: FALSE, is_mdns: FALSE */
 			domain_print(ndo, cp, length, FALSE, FALSE);
 			break;
+		case PT_QUIC:
+			quic_print(ndo, cp, length);
+			break;
 		}
 		return;
 	}
@@ -669,6 +672,9 @@ udp_print(netdissect_options *ndo, const u_char *bp, u_int length,
 			ptp_print(ndo, cp, length);
 		} else if (IS_SRC_OR_DST_PORT(SOMEIP_PORT))
 			someip_print(ndo, cp, length);
+		else if (IS_SRC_OR_DST_PORT(HTTPS_PORT) &&
+			 quic_detect(ndo, cp, length))
+			quic_print(ndo, cp, length);
 		else {
 			if (ulen > length && !fragmented)
 				ND_PRINT("UDP, bad length %u > %u",
diff --git a/tcpdump.c b/tcpdump.c
index bac890f0..a4403370 100644
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -1864,6 +1864,8 @@ main(int argc, char **argv)
 				ndo->ndo_packettype = PT_SOMEIP;
 			else if (ascii_strcasecmp(optarg, "domain") == 0)
 				ndo->ndo_packettype = PT_DOMAIN;
+			else if (ascii_strcasecmp(optarg, "quic") == 0)
+				ndo->ndo_packettype = PT_QUIC;
 			else
 				error("unknown packet type `%s'", optarg);
 			break;
diff --git a/tests/TESTLIST b/tests/TESTLIST
index 085985e7..8a8542c1 100644
--- a/tests/TESTLIST
+++ b/tests/TESTLIST
@@ -885,3 +885,9 @@ lsp-ping-timestamp	lsp-ping-timestamp.pcap		lsp-ping-timestamp.out	-vv
 
 # lwres with "extra" bytes
 lwres_with_extra lwres_with_extra.pcap lwres_with_extra.out
+
+# QUIC tests
+quic_vn				quic_vn.pcap			quic_vn.out	-v
+quic_handshake			quic_handshake.pcap		quic_handshake.out	-v
+quic_handshake_truncated	quic_handshake_truncated.pcap	quic_handshake_truncated.out	-v
+gquic				gquic.pcap			gquic.out	-v
diff --git a/tests/gquic.out b/tests/gquic.out
new file mode 100644
index 00000000..9f2708fe
--- /dev/null
+++ b/tests/gquic.out
@@ -0,0 +1,2 @@
+    1  06:42:38.000000 IP (tos 0x0, ttl 64, id 38137, offset 0, flags [DF], proto UDP (17), length 1378)
+    10.7.0.3.38824 > 216.58.195.67.443: quic, initial, v51303436, length 0, protected
diff --git a/tests/gquic.pcap b/tests/gquic.pcap
new file mode 100644
index 00000000..54bdcad1
--- /dev/null
+++ b/tests/gquic.pcap
diff --git a/tests/quic_handshake.out b/tests/quic_handshake.out
new file mode 100644
index 00000000..1059855c
--- /dev/null
+++ b/tests/quic_handshake.out
@@ -0,0 +1,18 @@
+    1  19:55:22.974137 IP6 (flowlabel 0xa0f00, hlim 64, next-header UDP (17) payload length: 1208) ::1.50606 > ::1.443: [bad udp cksum 0x04cb -> 0x88c5!] quic, initial, dcid 84acac06b42ed863, length 1182
+    2  19:55:22.986150 IP6 (flowlabel 0x50400, hlim 64, next-header UDP (17) payload length: 142) ::1.443 > ::1.50606: [bad udp cksum 0x00a1 -> 0x4011!] quic, initial, scid 51d1e44dc57a579e, length 116
+    3  19:55:22.986194 IP6 (class 0x02, flowlabel 0x50400, hlim 64, next-header UDP (17) payload length: 1205) ::1.443 > ::1.50606: [bad udp cksum 0x04c8 -> 0x7bc8!] quic, handshake, scid 51d1e44dc57a579e, length 1180
+    4  19:55:22.986207 IP6 (class 0x02, flowlabel 0x50400, hlim 64, next-header UDP (17) payload length: 127) ::1.443 > ::1.50606: [bad udp cksum 0x0092 -> 0x195c!] quic, handshake, scid 51d1e44dc57a579e, length 102
+    5  19:55:22.993319 IP6 (flowlabel 0xa0f00, hlim 64, next-header UDP (17) payload length: 1208) ::1.50606 > ::1.443: [bad udp cksum 0x04cb -> 0x166a!] quic, initial, dcid 51d1e44dc57a579e, length 1182
+    6  19:55:22.993381 IP6 (class 0x02, flowlabel 0xa0f00, hlim 64, next-header UDP (17) payload length: 47) ::1.50606 > ::1.443: [bad udp cksum 0x0042 -> 0x9e10!] quic, handshake, dcid 51d1e44dc57a579e, length 22
+    7  19:55:22.993883 IP6 (class 0x02, flowlabel 0xa0f00, hlim 64, next-header UDP (17) payload length: 81) ::1.50606 > ::1.443: [bad udp cksum 0x0064 -> 0xb505!] quic, handshake, dcid 51d1e44dc57a579e, length 56
+    8  19:55:22.994315 IP6 (class 0x02, flowlabel 0x50400, hlim 64, next-header UDP (17) payload length: 50) ::1.443 > ::1.50606: [bad udp cksum 0x0045 -> 0x174b!] quic, handshake, scid 51d1e44dc57a579e, length 25
+    9  19:55:22.994422 IP6 (class 0x02, flowlabel 0x50400, hlim 64, next-header UDP (17) payload length: 29) ::1.443 > ::1.50606: [bad udp cksum 0x0030 -> 0x028d!] quic, protected
+   10  19:55:22.994681 IP6 (class 0x02, flowlabel 0x50400, hlim 64, next-header UDP (17) payload length: 250) ::1.443 > ::1.50606: [bad udp cksum 0x010d -> 0xd406!] quic, protected
+   11  19:55:22.995595 IP6 (class 0x02, flowlabel 0xa0f00, hlim 64, next-header UDP (17) payload length: 42) ::1.50606 > ::1.443: [bad udp cksum 0x003d -> 0xd43e!] quic, protected, dcid 51d1e44dc57a579e
+   12  19:55:22.995673 IP6 (class 0x02, flowlabel 0xa0f00, hlim 64, next-header UDP (17) payload length: 37) ::1.50606 > ::1.443: [bad udp cksum 0x0038 -> 0x45ed!] quic, protected, dcid 51d1e44dc57a579e
+   13  19:55:22.995717 IP6 (class 0x02, flowlabel 0x50400, hlim 64, next-header UDP (17) payload length: 34) ::1.443 > ::1.50606: [bad udp cksum 0x0035 -> 0xc655!] quic, protected
+   14  19:55:22.995871 IP6 (class 0x02, flowlabel 0xa0f00, hlim 64, next-header UDP (17) payload length: 44) ::1.50606 > ::1.443: [bad udp cksum 0x003f -> 0xa02d!] quic, protected, dcid 51d1e44dc57a579e
+   15  19:55:22.996769 IP6 (class 0x02, flowlabel 0x50400, hlim 64, next-header UDP (17) payload length: 87) ::1.443 > ::1.50606: [bad udp cksum 0x006a -> 0xf83f!] quic, protected
+   16  19:55:22.996914 IP6 (class 0x02, flowlabel 0x50400, hlim 64, next-header UDP (17) payload length: 29) ::1.443 > ::1.50606: [bad udp cksum 0x0030 -> 0x9c19!] quic, protected
+   17  19:55:22.997174 IP6 (class 0x02, flowlabel 0xa0f00, hlim 64, next-header UDP (17) payload length: 39) ::1.50606 > ::1.443: [bad udp cksum 0x003a -> 0x34f5!] quic, protected, dcid 51d1e44dc57a579e
+   18  19:55:23.022890 IP6 (class 0x02, flowlabel 0xa0f00, hlim 64, next-header UDP (17) payload length: 39) ::1.50606 > ::1.443: [bad udp cksum 0x003a -> 0xef78!] quic, protected, dcid 51d1e44dc57a579e
diff --git a/tests/quic_handshake.pcap b/tests/quic_handshake.pcap
new file mode 100644
index 00000000..56ee4289
--- /dev/null
+++ b/tests/quic_handshake.pcap
diff --git a/tests/quic_handshake_truncated.out b/tests/quic_handshake_truncated.out
new file mode 100644
index 00000000..909b6191
--- /dev/null
+++ b/tests/quic_handshake_truncated.out
@@ -0,0 +1,18 @@
+    1  19:57:02.464273 IP6 (flowlabel 0x70e00, hlim 64, next-header UDP (17) payload length: 1208) ::1.65165 > ::1.443: quic, initial, dcid f71ae16671baa8b7, length 1182 [|quic]
+    2  19:57:02.477244 IP6 (flowlabel 0x50700, hlim 64, next-header UDP (17) payload length: 142) ::1.443 > ::1.65165: [bad udp cksum 0x00a1 -> 0x1f62!] quic, initial, scid beb256567ee5698c, length 116
+    3  19:57:02.477289 IP6 (class 0x02, flowlabel 0x50700, hlim 64, next-header UDP (17) payload length: 1205) ::1.443 > ::1.65165: quic, handshake, scid beb256567ee5698c, length 1180 [|quic]
+    4  19:57:02.477305 IP6 (class 0x02, flowlabel 0x50700, hlim 64, next-header UDP (17) payload length: 127) ::1.443 > ::1.65165: [bad udp cksum 0x0092 -> 0x912a!] quic, handshake, scid beb256567ee5698c, length 102
+    5  19:57:02.485020 IP6 (flowlabel 0x70e00, hlim 64, next-header UDP (17) payload length: 1208) ::1.65165 > ::1.443: quic, initial, dcid beb256567ee5698c, length 1182 [|quic]
+    6  19:57:02.485088 IP6 (class 0x02, flowlabel 0x70e00, hlim 64, next-header UDP (17) payload length: 47) ::1.65165 > ::1.443: [bad udp cksum 0x0042 -> 0x0519!] quic, handshake, dcid beb256567ee5698c, length 22
+    7  19:57:02.485464 IP6 (class 0x02, flowlabel 0x70e00, hlim 64, next-header UDP (17) payload length: 81) ::1.65165 > ::1.443: [bad udp cksum 0x0064 -> 0x9855!] quic, handshake, dcid beb256567ee5698c, length 56
+    8  19:57:02.485711 IP6 (class 0x02, flowlabel 0x50700, hlim 64, next-header UDP (17) payload length: 50) ::1.443 > ::1.65165: [bad udp cksum 0x0045 -> 0xca20!] quic, handshake, scid beb256567ee5698c, length 25
+    9  19:57:02.485809 IP6 (class 0x02, flowlabel 0x50700, hlim 64, next-header UDP (17) payload length: 29) ::1.443 > ::1.65165: [bad udp cksum 0x0030 -> 0x4f93!] quic, protected
+   10  19:57:02.486075 IP6 (class 0x02, flowlabel 0x50700, hlim 64, next-header UDP (17) payload length: 250) ::1.443 > ::1.65165: quic, protected
+   11  19:57:02.486726 IP6 (class 0x02, flowlabel 0x70e00, hlim 64, next-header UDP (17) payload length: 39) ::1.65165 > ::1.443: [bad udp cksum 0x003a -> 0x38d3!] quic, protected, dcid beb256567ee5698c
+   12  19:57:02.487067 IP6 (class 0x02, flowlabel 0x70e00, hlim 64, next-header UDP (17) payload length: 37) ::1.65165 > ::1.443: [bad udp cksum 0x0038 -> 0x3993!] quic, protected, dcid beb256567ee5698c
+   13  19:57:02.487144 IP6 (class 0x02, flowlabel 0x70e00, hlim 64, next-header UDP (17) payload length: 37) ::1.65165 > ::1.443: [bad udp cksum 0x0038 -> 0x7ae0!] quic, protected, dcid beb256567ee5698c
+   14  19:57:02.487236 IP6 (class 0x02, flowlabel 0x50700, hlim 64, next-header UDP (17) payload length: 34) ::1.443 > ::1.65165: [bad udp cksum 0x0035 -> 0x08ea!] quic, protected
+   15  19:57:02.487484 IP6 (class 0x02, flowlabel 0x70e00, hlim 64, next-header UDP (17) payload length: 44) ::1.65165 > ::1.443: [bad udp cksum 0x003f -> 0xb09b!] quic, protected, dcid beb256567ee5698c
+   16  19:57:02.488209 IP6 (class 0x02, flowlabel 0x50700, hlim 64, next-header UDP (17) payload length: 87) ::1.443 > ::1.65165: [bad udp cksum 0x006a -> 0xd85a!] quic, protected
+   17  19:57:02.488303 IP6 (class 0x02, flowlabel 0x50700, hlim 64, next-header UDP (17) payload length: 29) ::1.443 > ::1.65165: [bad udp cksum 0x0030 -> 0xca53!] quic, protected
+   18  19:57:02.489327 IP6 (class 0x02, flowlabel 0x70e00, hlim 64, next-header UDP (17) payload length: 39) ::1.65165 > ::1.443: [bad udp cksum 0x003a -> 0x12d6!] quic, protected, dcid beb256567ee5698c
diff --git a/tests/quic_handshake_truncated.pcap b/tests/quic_handshake_truncated.pcap
new file mode 100644
index 00000000..ee5a5775
--- /dev/null
+++ b/tests/quic_handshake_truncated.pcap
diff --git a/tests/quic_vn.out b/tests/quic_vn.out
new file mode 100644
index 00000000..802d1ff2
--- /dev/null
+++ b/tests/quic_vn.out
@@ -0,0 +1,25 @@
+    1  19:58:43.195985 IP6 (flowlabel 0x60e00, hlim 64, next-header UDP (17) payload length: 1208) ::1.57406 > ::1.443: [bad udp cksum 0x04cb -> 0x9841!] quic, initial, v1a2a3a4a, dcid 9d5728481287a3b4, length 1182
+    2  19:58:43.197540 IP6 (flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 31) ::1.443 > ::1.57406: [bad udp cksum 0x0032 -> 0xcfe3!] quic, version negotiation, scid 9d5728481287a3b4, version 0x1, version 0x1a2a3a4a
+    3  19:58:43.198343 IP6 (flowlabel 0x60e00, hlim 64, next-header UDP (17) payload length: 1208) ::1.57406 > ::1.443: [bad udp cksum 0x04cb -> 0x00e3!] quic, initial, dcid 9d5728481287a3b4, length 1182
+    4  19:58:43.209491 IP6 (flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 142) ::1.443 > ::1.57406: [bad udp cksum 0x00a1 -> 0xe0dc!] quic, initial, scid 0c3c2e287ccdc535, length 116
+    5  19:58:43.209543 IP6 (class 0x02, flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 1205) ::1.443 > ::1.57406: [bad udp cksum 0x04c8 -> 0x3f59!] quic, handshake, scid 0c3c2e287ccdc535, length 1180
+    6  19:58:43.209561 IP6 (class 0x02, flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 127) ::1.443 > ::1.57406: [bad udp cksum 0x0092 -> 0xfe4e!] quic, handshake, scid 0c3c2e287ccdc535, length 102
+    7  19:58:43.210228 IP6 (flowlabel 0x60e00, hlim 64, next-header UDP (17) payload length: 1208) ::1.57406 > ::1.443: [bad udp cksum 0x04cb -> 0x0be5!] quic, initial, dcid 0c3c2e287ccdc535, length 1182
+    8  19:58:43.211686 IP6 (class 0x02, flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 1205) ::1.443 > ::1.57406: [bad udp cksum 0x04c8 -> 0x38d0!] quic, handshake, scid 0c3c2e287ccdc535, length 1180
+    9  19:58:43.211707 IP6 (class 0x02, flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 127) ::1.443 > ::1.57406: [bad udp cksum 0x0092 -> 0x6a3b!] quic, handshake, scid 0c3c2e287ccdc535, length 102
+   10  19:58:43.215352 IP6 (class 0x02, flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 1205) ::1.443 > ::1.57406: [bad udp cksum 0x04c8 -> 0xd8ff!] quic, handshake, scid 0c3c2e287ccdc535, length 1180
+   11  19:58:43.215372 IP6 (class 0x02, flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 127) ::1.443 > ::1.57406: [bad udp cksum 0x0092 -> 0xb975!] quic, handshake, scid 0c3c2e287ccdc535, length 102
+   12  19:58:43.218021 IP6 (class 0x02, flowlabel 0x60e00, hlim 64, next-header UDP (17) payload length: 47) ::1.57406 > ::1.443: [bad udp cksum 0x0042 -> 0x25c0!] quic, handshake, dcid 0c3c2e287ccdc535, length 22
+   13  19:58:43.218451 IP6 (class 0x02, flowlabel 0x60e00, hlim 64, next-header UDP (17) payload length: 81) ::1.57406 > ::1.443: [bad udp cksum 0x0064 -> 0x7e36!] quic, handshake, dcid 0c3c2e287ccdc535, length 56
+   14  19:58:43.218672 IP6 (class 0x02, flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 50) ::1.443 > ::1.57406: [bad udp cksum 0x0045 -> 0x8994!] quic, handshake, scid 0c3c2e287ccdc535, length 25
+   15  19:58:43.218736 IP6 (class 0x02, flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 29) ::1.443 > ::1.57406: [bad udp cksum 0x0030 -> 0xb0c3!] quic, protected
+   16  19:58:43.218901 IP6 (class 0x02, flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 250) ::1.443 > ::1.57406: [bad udp cksum 0x010d -> 0xb0e1!] quic, protected
+   17  19:58:43.219325 IP6 (class 0x02, flowlabel 0x60e00, hlim 64, next-header UDP (17) payload length: 47) ::1.57406 > ::1.443: [bad udp cksum 0x0042 -> 0xd3d9!] quic, handshake, dcid 0c3c2e287ccdc535, length 22
+   18  19:58:43.219731 IP6 (class 0x02, flowlabel 0x60e00, hlim 64, next-header UDP (17) payload length: 39) ::1.57406 > ::1.443: [bad udp cksum 0x003a -> 0x2311!] quic, protected, dcid 0c3c2e287ccdc535
+   19  19:58:43.219941 IP6 (class 0x02, flowlabel 0x60e00, hlim 64, next-header UDP (17) payload length: 37) ::1.57406 > ::1.443: [bad udp cksum 0x0038 -> 0x9c23!] quic, protected, dcid 0c3c2e287ccdc535
+   20  19:58:43.220031 IP6 (class 0x02, flowlabel 0x60e00, hlim 64, next-header UDP (17) payload length: 37) ::1.57406 > ::1.443: [bad udp cksum 0x0038 -> 0x34fe!] quic, protected, dcid 0c3c2e287ccdc535
+   21  19:58:43.220140 IP6 (class 0x02, flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 34) ::1.443 > ::1.57406: [bad udp cksum 0x0035 -> 0xaf64!] quic, protected
+   22  19:58:43.220191 IP6 (class 0x02, flowlabel 0x60e00, hlim 64, next-header UDP (17) payload length: 44) ::1.57406 > ::1.443: [bad udp cksum 0x003f -> 0xaa1b!] quic, protected, dcid 0c3c2e287ccdc535
+   23  19:58:43.220999 IP6 (flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 87) ::1.443 > ::1.57406: [bad udp cksum 0x006a -> 0x5b11!] quic, protected
+   24  19:58:43.221067 IP6 (flowlabel 0x00e00, hlim 64, next-header UDP (17) payload length: 29) ::1.443 > ::1.57406: [bad udp cksum 0x0030 -> 0x7382!] quic, protected
+   25  19:58:43.221638 IP6 (class 0x02, flowlabel 0x60e00, hlim 64, next-header UDP (17) payload length: 39) ::1.57406 > ::1.443: [bad udp cksum 0x003a -> 0x00cc!] quic, protected, dcid 0c3c2e287ccdc535
diff --git a/tests/quic_vn.pcap b/tests/quic_vn.pcap
new file mode 100644
index 00000000..5487c23c
--- /dev/null
+++ b/tests/quic_vn.pcap
diff --git a/udp.h b/udp.h
index 1eb844ab..4f6fa380 100644
--- a/udp.h
+++ b/udp.h
@@ -251,3 +251,6 @@ struct udphdr {
 #ifndef SOMEIP_PORT
 #define SOMEIP_PORT			30490	/* https://www.autosar.org/standards/foundation */
 #endif
+#ifndef HTTPS_PORT
+#define	HTTPS_PORT			443
+#endif