use tcpdump to capture pcaps (#133)

* Use `tcpdump` to capture a second set of pcaps * Don't capture pcaps with ns3
quic-interop · Sep 5, 2024 · e5f7217 · e5f7217
1 parent de21ef0
commit e5f7217
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Showing 3 changed files with 3 additions and 5 deletions.
diff --git a/sim/Dockerfile b/sim/Dockerfile
@@ -38,7 +38,7 @@ RUN cd /wait-for-it-quic && go build .
 FROM ubuntu:24.04
 
 RUN apt-get update && \
-  apt-get install -y net-tools iptables libgsl-dev libxml2 libsqlite3-0 && \
+  apt-get install -y net-tools iptables libgsl-dev libxml2 libsqlite3-0 tcpdump && \
   apt-get clean
 
 WORKDIR /ns3

diff --git a/sim/run.sh b/sim/run.sh
@@ -22,6 +22,8 @@ fi
 
 echo "Using scenario:" $SCENARIO
 
+tcpdump -i eth0 -U -w "/logs/trace_node_left.pcap" &
+tcpdump -i eth1 -U -w "/logs/trace_node_right.pcap" &
 eval ./scratch/"$SCENARIO &"
 
 PID=`jobs -p`

diff --git a/sim/scenarios/helper/quic-point-to-point-helper.cc b/sim/scenarios/helper/quic-point-to-point-helper.cc
@@ -16,10 +16,6 @@ void QuicPointToPointHelper::SetQueueSize(StringValue size) {
 
 NetDeviceContainer QuicPointToPointHelper::Install(Ptr<Node> a, Ptr<Node> b) {
   NetDeviceContainer devices = PointToPointHelper::Install(a, b);
-  // capture a pcap of all packets
-  EnablePcap("/logs/trace_node_left.pcap", devices.Get(0), false, true);
-  EnablePcap("/logs/trace_node_right.pcap", devices.Get(1), false, true);
-
   TrafficControlHelper tch;
   tch.SetRootQueueDisc("ns3::PfifoFastQueueDisc", "MaxSize", queue_size_);
   tch.Install(devices);