Shell script to reproduce an issue in mdns-sd

ip-test-1.sh

# This script reproduces the issue at: https://github.com/keepsimple1/mdns-sd/issues/322
#
# When the script prints out "Not found", the issue is reproduced.

for i in {1..200}; do  
    echo "Iteration $i"

    # Start your program in the background
    RUST_LOG=debug cargo run --example  register _ip-test._udp instance1 host1 --logfile > output.txt 2>&1 &
    PROGRAM_PID=$!

    echo "Started ip-test with PID: $PROGRAM_PID"
    echo "sleep 20 seconds before creating interface"

    # Wait for 20 seconds
    sleep 20

    # Create the dummy interface
    ip link add mydummy type dummy

    # Assign an IP address (optional)
    ip addr add 192.168.100.1/24 dev mydummy

    # Bring the interface up
    ip link set mydummy up

    # Verify the interface
    ip addr show mydummy

    echo "sleep 35 seconds before deleting interface"
    sleep 35

    # Delete the dummy interface
    ip link delete mydummy

    # Confirm deletion
    ip addr show mydummy

    MATCHING_LINE=$(grep -E "Announce.*192.168.100.1" output.txt)
    if [[ -n "$MATCHING_LINE" ]]; then
        echo "Found: $MATCHING_LINE"
    else
        echo "Not found"
        gdb -p $PROGRAM_PID -batch -ex "thread apply all bt" > stacktrace.txt
        kill $PROGRAM_PID
        break
    fi
  
    # Stop the program 
    kill $PROGRAM_PID

    echo "sleep 2 seconds before next iteration" 
    sleep 2
done