From bad00ea9f7688c068f1bf212f24f4518577f4b06 Mon Sep 17 00:00:00 2001
From: Andras Fekete <andras@wolfssl.com>
Date: Fri, 18 Aug 2023 11:04:45 -0400
Subject: [PATCH] Adding in tcpdump capture

---
 scripts/dtls13.test | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/scripts/dtls13.test b/scripts/dtls13.test
index 63f18f9d5..30bcd079a 100755
--- a/scripts/dtls13.test
+++ b/scripts/dtls13.test
@@ -13,6 +13,11 @@ cleanup () {
         echo "Killing server $SERVER_PID"
         kill $SERVER_PID
     fi
+    if [ ! -z "$TCPDUMP_PID" ];then
+        echo "Killing tcpdump $TCPDUMP_PID"
+        sleep 1
+        kill $TCPDUMP_PID
+    fi
 }
 
 trap cleanup err exit
@@ -108,6 +113,10 @@ EOF
     done
 }
 
+echo "Starting capture"
+tcpdump -i lo -n port ${SERVER_PORT} -w ./dtls.pcap -U &
+TCPDUMP_PID=$!
+
 test_dropping_packets
 test_permutations client 012
 test_dropping_new_session_ticket 200