Add Paltalk protocol support

ntop · Oct 24, 2024 · 9c0188b · 9c0188b
1 parent 3b1286a
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Showing 133 changed files with 257 additions and 125 deletions.
diff --git a/doc/protocols.rst b/doc/protocols.rst
@@ -992,3 +992,12 @@ References: `Main site: <https://www.sonos.com/>`_
 DingTalk is a versatile communication and collaboration platform developed by Alibaba Group.
 
 References: `Main site: <https://www.dingtalk.com/en>`_
+
+
+.. _Proto 432:
+
+`NDPI_PROTOCOL_PALTALK`
+=========================
+Paltalk is a video chat and instant messaging application that allows users to communicate through video, voice, and text in chat rooms.
+
+References: `Main site: <https://www.paltalk.com/>`_
diff --git a/src/include/ndpi_private.h b/src/include/ndpi_private.h
@@ -963,6 +963,7 @@ void init_atg_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int3
 void init_trdp_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_lustre_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_dingtalk_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
+void init_paltalk_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
@@ -460,6 +460,7 @@ typedef enum {
   NDPI_PROTOCOL_WINDSCRIBE            = 429,
   NDPI_PROTOCOL_SONOS                 = 430,
   NDPI_PROTOCOL_DINGTALK              = 431,
+  NDPI_PROTOCOL_PALTALK               = 432,
 
 #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
@@ -1695,6 +1695,9 @@ static ndpi_protocol_match host_match[] =
 
    { "dingtalk.com",                     "DingTalk", NDPI_PROTOCOL_DINGTALK, NDPI_PROTOCOL_CATEGORY_CHAT, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_DEFAULT_LEVEL },
 
+   { "paltalk.com",                      "Paltalk", NDPI_PROTOCOL_PALTALK, NDPI_PROTOCOL_CATEGORY_CHAT, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_DEFAULT_LEVEL },
+   { "paltalkconnect.com",               "Paltalk", NDPI_PROTOCOL_PALTALK, NDPI_PROTOCOL_CATEGORY_CHAT, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_DEFAULT_LEVEL },
+
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_content_match_host_match.c.inc"
 #endif
@@ -1727,6 +1730,7 @@ static ndpi_tls_cert_name_match tls_certificate_match [] = {
   { "O=Sonos, Inc",                    NDPI_PROTOCOL_SONOS      },  
   { "CN=Snapchat Inc.",                NDPI_PROTOCOL_SNAPCHAT_CALL },
   { "CN=NVIDIA GameStream",            NDPI_PROTOCOL_GEFORCENOW },
+  { "O=PALTALK, INC.",                 NDPI_PROTOCOL_PALTALK },
 
   { NULL, 0 }
 };

diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
@@ -2391,6 +2391,10 @@ static void ndpi_init_protocol_defaults(struct ndpi_detection_module_struct *ndp
 			  "DingTalk", NDPI_PROTOCOL_CATEGORY_CHAT,
 			  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_ACCEPTABLE, NDPI_PROTOCOL_PALTALK,
+			  "Paltalk", NDPI_PROTOCOL_CATEGORY_CHAT,
+			  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"
@@ -6386,6 +6390,9 @@ static int ndpi_callback_init(struct ndpi_detection_module_struct *ndpi_str) {
   /* DingTalk */
   init_dingtalk_dissector(ndpi_str, &a);
 
+  /* Paltalk */
+  init_paltalk_dissector(ndpi_str, &a);
+
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_main_init.c"
 #endif

diff --git a/src/lib/protocols/paltalk.c b/src/lib/protocols/paltalk.c
@@ -0,0 +1,73 @@
+/*
+ * paltalk.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_PALTALK
+
+#include "ndpi_api.h"
+#include "ndpi_private.h"
+
+static void ndpi_int_paltalk_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
+                                            struct ndpi_flow_struct *flow)
+{
+  NDPI_LOG_INFO(ndpi_struct, "found Paltalk\n");
+  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_PALTALK, NDPI_PROTOCOL_UNKNOWN,
+                             NDPI_CONFIDENCE_DPI);
+}
+
+static void ndpi_search_paltalk(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 Paltalk\n");
+
+  if (packet->payload_packet_len == 20 && get_u_int32_t(packet->payload, 8) == htonl(0x020001) &&
+      get_u_int32_t(packet->payload, 16) == htonl(0x5AFDFFFF))
+  {
+    ndpi_int_paltalk_add_connection(ndpi_struct, flow);
+    return;
+  }
+
+  if (packet->payload_packet_len == 22 && get_u_int32_t(packet->payload, 2) == htonl(0x24C2E80B) &&
+      get_u_int32_t(packet->payload, 17) == htonl(0x5B732B00))
+  {
+    ndpi_int_paltalk_add_connection(ndpi_struct, flow);
+    return;
+  }
+
+  NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+}
+
+void init_paltalk_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
+{
+  ndpi_set_bitmask_protocol_detection("Paltalk", ndpi_struct, *id,
+              NDPI_PROTOCOL_PALTALK,
+              ndpi_search_paltalk,
+              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: 583 (97.17 diss/flow)
+Num dissector calls: 586 (97.67 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache stun:       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: 524 (6.31 diss/flow)
+Num dissector calls: 525 (6.33 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/9/0 (insert/search/found)
 LRU cache stun:       30/0/0 (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: 583 (97.17 diss/flow)
+Num dissector calls: 586 (97.67 diss/flow)
 LRU cache ookla:      4/2/2 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache stun:       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: 524 (6.31 diss/flow)
+Num dissector calls: 525 (6.33 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/9/0 (insert/search/found)
 LRU cache stun:       30/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/pcap/paltalk.pcapng b/tests/cfgs/default/pcap/paltalk.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: 5037 (25.57 diss/flow)
+Num dissector calls: 5040 (25.58 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/60/0 (insert/search/found)
 LRU cache stun:       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: 156 (156.00 diss/flow)
+Num dissector calls: 157 (157.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache stun:       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: 157 (157.00 diss/flow)
+Num dissector calls: 158 (158.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache stun:       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: 554 (14.58 diss/flow)
+Num dissector calls: 556 (14.63 diss/flow)
 LRU cache ookla:      0/1/0 (insert/search/found)
 LRU cache bittorrent: 0/15/0 (insert/search/found)
 LRU cache stun:       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: 1238 (61.90 diss/flow)
+Num dissector calls: 1242 (62.10 diss/flow)
 LRU cache ookla:      0/2/0 (insert/search/found)
 LRU cache bittorrent: 0/27/0 (insert/search/found)
 LRU cache stun:       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: 257 (257.00 diss/flow)
+Num dissector calls: 258 (258.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache stun:       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: 570 (3.56 diss/flow)
+Num dissector calls: 571 (3.57 diss/flow)
 LRU cache ookla:      0/5/0 (insert/search/found)
 LRU cache bittorrent: 0/42/0 (insert/search/found)
 LRU cache stun:       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: 381 (127.00 diss/flow)
+Num dissector calls: 382 (127.33 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache stun:       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: 816 (11.83 diss/flow)
+Num dissector calls: 817 (11.84 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/24/0 (insert/search/found)
 LRU cache stun:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/bfcp.pcapng.out b/tests/cfgs/default/result/bfcp.pcapng.out
@@ -1,7 +1,7 @@
 DPI Packets (TCP):	6	(6.00 pkts/flow)
 DPI Packets (UDP):	2	(2.00 pkts/flow)
 Confidence DPI              : 2 (flows)
-Num dissector calls: 338 (169.00 diss/flow)
+Num dissector calls: 339 (169.50 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache stun:       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 (cache)      : 1 (flows)
-Num dissector calls: 241 (241.00 diss/flow)
+Num dissector calls: 242 (242.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 10/1/1 (insert/search/found)
 LRU cache stun:       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: 315 (105.00 diss/flow)
+Num dissector calls: 317 (105.67 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache stun:       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
@@ -5,7 +5,7 @@ DPI Packets (UDP):	1	(1.00 pkts/flow)
 Confidence Match by port    : 2 (flows)
 Confidence DPI              : 6 (flows)
 Confidence Match by IP      : 1 (flows)
-Num dissector calls: 352 (39.11 diss/flow)
+Num dissector calls: 353 (39.22 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/9/0 (insert/search/found)
 LRU cache stun:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/codm.pcap.out b/tests/cfgs/default/result/codm.pcap.out
@@ -1,7 +1,7 @@
 DPI Packets (TCP):	7	(7.00 pkts/flow)
 DPI Packets (UDP):	5	(2.50 pkts/flow)
 Confidence DPI              : 3 (flows)
-Num dissector calls: 480 (160.00 diss/flow)
+Num dissector calls: 481 (160.33 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache stun:       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
@@ -26,6 +26,6 @@ CustomProtocolC	3	222	1
 
 Acceptable                       8 592           3            
 
-	1	TCP 192.168.1.245:56866 -> 3.3.3.3:443 [proto: 91.438/TLS.CustomProtocolA][IP: 438/CustomProtocolA][Encrypted][Confidence: Match by custom rule][FPC: 0/Unknown, Confidence: Unknown][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][TCP Fingerprint: 2_64_64240_2e3cee914fc1/Linux][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: 91.439/TLS.CustomProtocolA][IP: 439/CustomProtocolA][Encrypted][Confidence: Match by custom rule][FPC: 0/Unknown, Confidence: Unknown][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][TCP Fingerprint: 2_64_64240_2e3cee914fc1/Linux][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][FPC: 0/Unknown, Confidence: Unknown][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][TCP Fingerprint: 2_64_64240_2e3cee914fc1/Linux][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: 439/CustomProtocolB][IP: 439/CustomProtocolB][ClearText][Confidence: Match by custom rule][FPC: 0/Unknown, Confidence: Unknown][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][TCP Fingerprint: 2_64_64240_2e3cee914fc1/Linux][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: 440/CustomProtocolB][IP: 440/CustomProtocolB][ClearText][Confidence: Match by custom rule][FPC: 0/Unknown, Confidence: Unknown][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][TCP Fingerprint: 2_64_64240_2e3cee914fc1/Linux][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/dingtalk.pcap.out b/tests/cfgs/default/result/dingtalk.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (TCP):	11	(5.50 pkts/flow)
 Confidence DPI              : 2 (flows)
-Num dissector calls: 313 (156.50 diss/flow)
+Num dissector calls: 314 (157.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache stun:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/elf.pcap.out b/tests/cfgs/default/result/elf.pcap.out
@@ -1,7 +1,7 @@
 DPI Packets (TCP):	10	(10.00 pkts/flow)
 DPI Packets (UDP):	2	(2.00 pkts/flow)
 Confidence Unknown          : 2 (flows)
-Num dissector calls: 341 (170.50 diss/flow)
+Num dissector calls: 342 (171.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/6/0 (insert/search/found)
 LRU cache stun:       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: 227 (37.83 diss/flow)
+Num dissector calls: 228 (38.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache stun:       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: 177 (177.00 diss/flow)
+Num dissector calls: 178 (178.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache stun:       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: 180 (180.00 diss/flow)
+Num dissector calls: 181 (181.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache stun:       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: 548 (182.67 diss/flow)
+Num dissector calls: 550 (183.33 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache stun:       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: 178 (178.00 diss/flow)
+Num dissector calls: 179 (179.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache stun:       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          : 33 (flows)
 Confidence Match by port    : 28 (flows)
 Confidence DPI              : 185 (flows)
-Num dissector calls: 7884 (32.05 diss/flow)
+Num dissector calls: 7897 (32.10 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/189/0 (insert/search/found)
 LRU cache stun:       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    : 23 (flows)
 Confidence DPI              : 13 (flows)
-Num dissector calls: 976 (25.03 diss/flow)
+Num dissector calls: 981 (25.15 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/78/0 (insert/search/found)
 LRU cache stun:       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: 154 (154.00 diss/flow)
+Num dissector calls: 155 (155.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache stun:       0/0/0 (insert/search/found)