Repeated FIN packets without acknowledgement #1596
Description
Describe the issue
TCP endpoints don't seem to ACK the FIN packet. In the following screenshot showing a small HTTP request from a client (11.0.0.1) to a server (11.0.0.4), the client sends the GET request, the server sends the response, the client sends a FIN, and then the server sends a FIN. But neither the server nor client acknowledge the FIN, so they continue sending FIN messages to each other once every second.
To Reproduce
general:
stop_time: 20
network:
graph:
type: gml
inline: |
graph [
node [
id 0
host_bandwidth_down "140 Mbit"
host_bandwidth_up "18 Mbit"
]
edge [
source 0
target 0
latency "100 ms"
packet_loss 0.01
]
]
host_defaults:
pcap_directory: 'pcaps'
hosts:
server:
network_node_id: 0
quantity: 1
processes:
- path: /usr/bin/python3
args: -m http.server 80
start_time: 3
client:
network_node_id: 0
quantity: 3
processes:
- path: /usr/bin/curl
args: -s server
start_time: 5Using the shadow version from #1595.