Add Path of Exile protocol dissector (#2337)

* Add Path of Exile protocol dissector * Update protocols.rst
ntop · Mar 6, 2024 · e294904 · e294904
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diff --git a/doc/protocols.rst b/doc/protocols.rst
@@ -656,3 +656,12 @@ References: `RFC <https://datatracker.ietf.org/doc/html/rfc5880>`_
 Traffic of various NetEase games.
 
 References: `Main site <https://www.neteasegames.com/>`_
+
+
+.. _Proto 403:
+
+`NDPI_PROTOCOL_PATHOFEXILE`
+============================
+Path of Exile is a free-to-play online Action RPG.
+
+References: `Main site <https://pathofexile.com/>`_
diff --git a/src/include/ndpi_private.h b/src/include/ndpi_private.h
@@ -911,6 +911,7 @@ void init_c1222_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_in
 void init_dlep_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_bfd_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_netease_games_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
+void init_pathofexile_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 
 #endif
 

diff --git a/src/include/ndpi_protocol_ids.h b/src/include/ndpi_protocol_ids.h
@@ -431,6 +431,7 @@ typedef enum {
   NDPI_PROTOCOL_DLEP                  = 400,
   NDPI_PROTOCOL_BFD                   = 401,
   NDPI_PROTOCOL_NETEASE_GAMES         = 402,
+  NDPI_PROTOCOL_PATHOFEXILE           = 403,
 
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_protocol_ids.h"

diff --git a/src/lib/ndpi_content_match.c.inc b/src/lib/ndpi_content_match.c.inc
@@ -1609,6 +1609,7 @@ static ndpi_protocol_match host_match[] =
    { "myhuaweicloud.com",                "HuaweiCloud", NDPI_PROTOCOL_HUAWEI_CLOUD, NDPI_PROTOCOL_CATEGORY_CLOUD, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_DEFAULT_LEVEL },
 
    { "easebar.com",                      "NetEaseGames", NDPI_PROTOCOL_NETEASE_GAMES, NDPI_PROTOCOL_CATEGORY_GAME, NDPI_PROTOCOL_FUN, NDPI_PROTOCOL_DEFAULT_LEVEL },
+   { "pathofexile.com",                  "PathofExile", NDPI_PROTOCOL_PATHOFEXILE, NDPI_PROTOCOL_CATEGORY_GAME, NDPI_PROTOCOL_FUN, NDPI_PROTOCOL_DEFAULT_LEVEL },
 
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_content_match_host_match.c.inc"

diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
@@ -2263,6 +2263,10 @@ static void ndpi_init_protocol_defaults(struct ndpi_detection_module_struct *ndp
 			  "NetEaseGames", NDPI_PROTOCOL_CATEGORY_GAME,
 			  ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */,
 			  ndpi_build_default_ports(ports_b, 0, 0, 0, 0, 0) /* UDP */);
+  ndpi_set_proto_defaults(ndpi_str, 1 /* cleartext */, 0 /* nw proto */, NDPI_PROTOCOL_FUN, NDPI_PROTOCOL_PATHOFEXILE,
+			  "PathofExile", NDPI_PROTOCOL_CATEGORY_GAME,
+			  ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */,
+			  ndpi_build_default_ports(ports_b, 0, 0, 0, 0, 0) /* UDP */);
 
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_main.c"
@@ -6116,6 +6120,9 @@ static int ndpi_callback_init(struct ndpi_detection_module_struct *ndpi_str) {
   /* NetEase Games */
   init_netease_games_dissector(ndpi_str, &a);
 
+  /* Path of Exile */
+  init_pathofexile_dissector(ndpi_str, &a);
+
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_main_init.c"
 #endif

diff --git a/src/lib/protocols/path_of_exile.c b/src/lib/protocols/path_of_exile.c
@@ -0,0 +1,69 @@
+/*
+ * path_of_exile.c
+ *
+ * Copyright (C) 2024 - ntop.org
+ * Copyright (C) 2024 - V.G <[email protected]>
+ *
+ * This file is part of nDPI, an open source deep packet inspection
+ * library based on the OpenDPI and PACE technology by ipoque GmbH
+ *
+ * nDPI is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * nDPI is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with nDPI.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+#include "ndpi_protocol_ids.h"
+
+#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_PATHOFEXILE
+
+#include "ndpi_api.h"
+#include "ndpi_private.h"
+
+static void ndpi_search_pathofexile(struct ndpi_detection_module_struct *ndpi_struct,
+                                    struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct const * const packet = &ndpi_struct->packet;
+
+  NDPI_LOG_DBG(ndpi_struct, "search Path of Exile\n");
+
+  /* The first packet always contains these signatures and the character's 
+   * nickname (from 4 to 23 chars).
+   */
+  if ((packet->payload_packet_len > 25 && packet->payload_packet_len < 50) &&
+      (packet->payload[0] == 0 && packet->payload[6] == 0))
+  {
+    if (ntohs(get_u_int16_t(packet->payload, 1)) == 0x300 &&
+        ntohs(get_u_int16_t(packet->payload, 7)) == 0x200 &&
+        ntohl(get_u_int32_t(packet->payload, packet->payload_packet_len-8)) == 0 &&
+        ntohl(get_u_int32_t(packet->payload, packet->payload_packet_len-4)) == 0x40000001)
+    {
+      NDPI_LOG_INFO(ndpi_struct, "found Path of Exile\n");
+      ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_PATHOFEXILE, NDPI_PROTOCOL_UNKNOWN,
+                                 NDPI_CONFIDENCE_DPI);
+    }
+  }
+
+  NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+}
+
+void init_pathofexile_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
+{
+  ndpi_set_bitmask_protocol_detection("PathofExile", ndpi_struct, *id,
+              NDPI_PROTOCOL_PATHOFEXILE,
+              ndpi_search_pathofexile,
+              NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
+              SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+              ADD_TO_DETECTION_BITMASK);
+
+  *id += 1;
+}
diff --git a/tests/cfgs/caches_cfg/result/ookla.pcap.out b/tests/cfgs/caches_cfg/result/ookla.pcap.out
@@ -3,7 +3,7 @@ Guessed flow protos:	1
 DPI Packets (TCP):	40	(6.67 pkts/flow)
 Confidence Match by port    : 1 (flows)
 Confidence DPI              : 5 (flows)
-Num dissector calls: 571 (95.17 diss/flow)
+Num dissector calls: 574 (95.67 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/caches_cfg/result/teams.pcap.out b/tests/cfgs/caches_cfg/result/teams.pcap.out
@@ -7,7 +7,7 @@ Confidence Unknown          : 1 (flows)
 Confidence Match by port    : 1 (flows)
 Confidence DPI (partial)    : 1 (flows)
 Confidence DPI              : 80 (flows)
-Num dissector calls: 538 (6.48 diss/flow)
+Num dissector calls: 539 (6.49 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/9/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/caches_global/result/ookla.pcap.out b/tests/cfgs/caches_global/result/ookla.pcap.out
@@ -4,7 +4,7 @@ DPI Packets (TCP):	40	(6.67 pkts/flow)
 Confidence DPI (partial cache): 1 (flows)
 Confidence DPI              : 4 (flows)
 Confidence DPI (aggressive) : 1 (flows)
-Num dissector calls: 571 (95.17 diss/flow)
+Num dissector calls: 574 (95.67 diss/flow)
 LRU cache ookla:      4/2/2 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/caches_global/result/teams.pcap.out b/tests/cfgs/caches_global/result/teams.pcap.out
@@ -7,7 +7,7 @@ Confidence Unknown          : 1 (flows)
 Confidence Match by port    : 1 (flows)
 Confidence DPI (partial)    : 5 (flows)
 Confidence DPI              : 76 (flows)
-Num dissector calls: 538 (6.48 diss/flow)
+Num dissector calls: 539 (6.49 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/9/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/pcap/path_of_exile.pcapng b/tests/cfgs/default/pcap/path_of_exile.pcapng
diff --git a/tests/cfgs/default/result/1kxun.pcap.out b/tests/cfgs/default/result/1kxun.pcap.out
@@ -5,7 +5,7 @@ DPI Packets (UDP):	120	(1.21 pkts/flow)
 Confidence Unknown          : 14 (flows)
 Confidence Match by port    : 6 (flows)
 Confidence DPI              : 177 (flows)
-Num dissector calls: 5007 (25.42 diss/flow)
+Num dissector calls: 5010 (25.43 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/60/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/443-chrome.pcap.out b/tests/cfgs/default/result/443-chrome.pcap.out
@@ -2,7 +2,7 @@ Guessed flow protos:	1
 
 DPI Packets (TCP):	1	(1.00 pkts/flow)
 Confidence Match by port    : 1 (flows)
-Num dissector calls: 146 (146.00 diss/flow)
+Num dissector calls: 147 (147.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/443-opvn.pcap.out b/tests/cfgs/default/result/443-opvn.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	6	(6.00 pkts/flow)
 Confidence DPI              : 1 (flows)
-Num dissector calls: 147 (147.00 diss/flow)
+Num dissector calls: 148 (148.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/KakaoTalk_chat.pcap.out b/tests/cfgs/default/result/KakaoTalk_chat.pcap.out
@@ -5,7 +5,7 @@ DPI Packets (UDP):	36	(2.00 pkts/flow)
 DPI Packets (other):	1	(1.00 pkts/flow)
 Confidence Match by port    : 5 (flows)
 Confidence DPI              : 33 (flows)
-Num dissector calls: 576 (15.16 diss/flow)
+Num dissector calls: 578 (15.21 diss/flow)
 LRU cache ookla:      0/1/0 (insert/search/found)
 LRU cache bittorrent: 0/15/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/KakaoTalk_talk.pcap.out b/tests/cfgs/default/result/KakaoTalk_talk.pcap.out
@@ -5,7 +5,7 @@ DPI Packets (UDP):	10	(2.00 pkts/flow)
 Confidence Match by port    : 8 (flows)
 Confidence DPI              : 11 (flows)
 Confidence Match by IP      : 1 (flows)
-Num dissector calls: 1218 (60.90 diss/flow)
+Num dissector calls: 1222 (61.10 diss/flow)
 LRU cache ookla:      0/2/0 (insert/search/found)
 LRU cache bittorrent: 0/27/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/Oscar.pcap.out b/tests/cfgs/default/result/Oscar.pcap.out
@@ -2,7 +2,7 @@ Guessed flow protos:	1
 
 DPI Packets (TCP):	21	(21.00 pkts/flow)
 Confidence Match by port    : 1 (flows)
-Num dissector calls: 265 (265.00 diss/flow)
+Num dissector calls: 266 (266.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/alexa-app.pcapng.out b/tests/cfgs/default/result/alexa-app.pcapng.out
@@ -5,7 +5,7 @@ DPI Packets (UDP):	64	(1.94 pkts/flow)
 DPI Packets (other):	6	(1.00 pkts/flow)
 Confidence Match by port    : 14 (flows)
 Confidence DPI              : 146 (flows)
-Num dissector calls: 560 (3.50 diss/flow)
+Num dissector calls: 561 (3.51 diss/flow)
 LRU cache ookla:      0/5/0 (insert/search/found)
 LRU cache bittorrent: 0/42/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/amqp.pcap.out b/tests/cfgs/default/result/amqp.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	9	(3.00 pkts/flow)
 Confidence DPI              : 3 (flows)
-Num dissector calls: 387 (129.00 diss/flow)
+Num dissector calls: 388 (129.33 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/anyconnect-vpn.pcap.out b/tests/cfgs/default/result/anyconnect-vpn.pcap.out
@@ -6,7 +6,7 @@ DPI Packets (other):	10	(1.00 pkts/flow)
 Confidence Unknown          : 2 (flows)
 Confidence Match by port    : 6 (flows)
 Confidence DPI              : 61 (flows)
-Num dissector calls: 870 (12.61 diss/flow)
+Num dissector calls: 871 (12.62 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/24/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/bittorrent_tcp_miss.pcapng.out b/tests/cfgs/default/result/bittorrent_tcp_miss.pcapng.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	10	(10.00 pkts/flow)
 Confidence DPI              : 1 (flows)
-Num dissector calls: 245 (245.00 diss/flow)
+Num dissector calls: 246 (246.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 5/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/cassandra.pcap.out b/tests/cfgs/default/result/cassandra.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	16	(5.33 pkts/flow)
 Confidence DPI              : 3 (flows)
-Num dissector calls: 295 (98.33 diss/flow)
+Num dissector calls: 297 (99.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/cloudflare-warp.pcap.out b/tests/cfgs/default/result/cloudflare-warp.pcap.out
@@ -4,7 +4,7 @@ DPI Packets (TCP):	41	(5.12 pkts/flow)
 Confidence Match by port    : 2 (flows)
 Confidence DPI              : 5 (flows)
 Confidence Match by IP      : 1 (flows)
-Num dissector calls: 202 (25.25 diss/flow)
+Num dissector calls: 203 (25.38 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/9/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/custom_rules_same-ip_multiple_ports.pcapng.out b/tests/cfgs/default/result/custom_rules_same-ip_multiple_ports.pcapng.out
@@ -27,6 +27,6 @@ CustomProtocolC	3	222	1
 
 Acceptable                       8 592           3            
 
-	1	TCP 192.168.1.245:56866 -> 3.3.3.3:443 [proto: 91.409/TLS.CustomProtocolA][IP: 409/CustomProtocolA][Encrypted][Confidence: Match by custom rule][DPI packets: 1][cat: Web/5][3 pkts/222 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][3.05 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
+	1	TCP 192.168.1.245:56866 -> 3.3.3.3:443 [proto: 91.410/TLS.CustomProtocolA][IP: 410/CustomProtocolA][Encrypted][Confidence: Match by custom rule][DPI packets: 1][cat: Web/5][3 pkts/222 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][3.05 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
 	2	TCP 192.168.1.245:58288 -> 3.3.3.3:446 [proto: 800/CustomProtocolC][IP: 800/CustomProtocolC][ClearText][Confidence: Match by custom rule][DPI packets: 1][3 pkts/222 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][3.04 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
-	3	TCP 192.168.1.245:59682 -> 3.3.3.3:444 [proto: 410/CustomProtocolB][IP: 410/CustomProtocolB][ClearText][Confidence: Match by custom rule][DPI packets: 1][2 pkts/148 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][1.02 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
+	3	TCP 192.168.1.245:59682 -> 3.3.3.3:444 [proto: 411/CustomProtocolB][IP: 411/CustomProtocolB][ClearText][Confidence: Match by custom rule][DPI packets: 1][2 pkts/148 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][1.02 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
diff --git a/tests/cfgs/default/result/edonkey.pcap.out b/tests/cfgs/default/result/edonkey.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	5	(5.00 pkts/flow)
 Confidence DPI              : 1 (flows)
-Num dissector calls: 149 (149.00 diss/flow)
+Num dissector calls: 150 (150.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/emotet.pcap.out b/tests/cfgs/default/result/emotet.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	48	(8.00 pkts/flow)
 Confidence DPI              : 6 (flows)
-Num dissector calls: 220 (36.67 diss/flow)
+Num dissector calls: 221 (36.83 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/fastcgi.pcap.out b/tests/cfgs/default/result/fastcgi.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	6	(6.00 pkts/flow)
 Confidence DPI              : 1 (flows)
-Num dissector calls: 171 (171.00 diss/flow)
+Num dissector calls: 172 (172.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/ftp-start-tls.pcap.out b/tests/cfgs/default/result/ftp-start-tls.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	17	(17.00 pkts/flow)
 Confidence DPI              : 1 (flows)
-Num dissector calls: 173 (173.00 diss/flow)
+Num dissector calls: 174 (174.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/ftp.pcap.out b/tests/cfgs/default/result/ftp.pcap.out
@@ -1,7 +1,7 @@
 DPI Packets (TCP):	39	(13.00 pkts/flow)
 Confidence Unknown          : 1 (flows)
 Confidence DPI              : 2 (flows)
-Num dissector calls: 539 (179.67 diss/flow)
+Num dissector calls: 541 (180.33 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/ftp_failed.pcap.out b/tests/cfgs/default/result/ftp_failed.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	8	(8.00 pkts/flow)
 Confidence DPI              : 1 (flows)
-Num dissector calls: 172 (172.00 diss/flow)
+Num dissector calls: 173 (173.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/fuzz-2006-06-26-2594.pcap.out b/tests/cfgs/default/result/fuzz-2006-06-26-2594.pcap.out
@@ -6,7 +6,7 @@ DPI Packets (other):	5	(1.00 pkts/flow)
 Confidence Unknown          : 34 (flows)
 Confidence Match by port    : 27 (flows)
 Confidence DPI              : 190 (flows)
-Num dissector calls: 7373 (29.37 diss/flow)
+Num dissector calls: 7385 (29.42 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/189/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/fuzz-2006-09-29-28586.pcap.out b/tests/cfgs/default/result/fuzz-2006-09-29-28586.pcap.out
@@ -5,7 +5,7 @@ DPI Packets (other):	1	(1.00 pkts/flow)
 Confidence Unknown          : 3 (flows)
 Confidence Match by port    : 26 (flows)
 Confidence DPI              : 11 (flows)
-Num dissector calls: 1127 (28.17 diss/flow)
+Num dissector calls: 1133 (28.33 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/87/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/fuzz-2021-10-13.pcap.out b/tests/cfgs/default/result/fuzz-2021-10-13.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	1	(1.00 pkts/flow)
 Confidence Unknown          : 1 (flows)
-Num dissector calls: 145 (145.00 diss/flow)
+Num dissector calls: 146 (146.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/gaijin_mobile_mixed.pcap.out b/tests/cfgs/default/result/gaijin_mobile_mixed.pcap.out
@@ -1,7 +1,7 @@
 DPI Packets (TCP):	13	(6.50 pkts/flow)
 DPI Packets (UDP):	1	(1.00 pkts/flow)
 Confidence DPI              : 3 (flows)
-Num dissector calls: 149 (49.67 diss/flow)
+Num dissector calls: 150 (50.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/google_ssl.pcap.out b/tests/cfgs/default/result/google_ssl.pcap.out
@@ -2,7 +2,7 @@ Guessed flow protos:	1
 
 DPI Packets (TCP):	24	(24.00 pkts/flow)
 Confidence Match by port    : 1 (flows)
-Num dissector calls: 209 (209.00 diss/flow)
+Num dissector calls: 210 (210.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/http_guessed_host_and_guessed.pcapng.out b/tests/cfgs/default/result/http_guessed_host_and_guessed.pcapng.out
@@ -2,7 +2,7 @@ Guessed flow protos:	1
 
 DPI Packets (TCP):	1	(1.00 pkts/flow)
 Confidence Match by port    : 1 (flows)
-Num dissector calls: 146 (146.00 diss/flow)
+Num dissector calls: 147 (147.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/imap-starttls.pcap.out b/tests/cfgs/default/result/imap-starttls.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	19	(19.00 pkts/flow)
 Confidence DPI              : 1 (flows)
-Num dissector calls: 221 (221.00 diss/flow)
+Num dissector calls: 222 (222.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/imap.pcap.out b/tests/cfgs/default/result/imap.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	11	(11.00 pkts/flow)
 Confidence DPI              : 1 (flows)
-Num dissector calls: 221 (221.00 diss/flow)
+Num dissector calls: 222 (222.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)