{
for p in 80 443 1021 1222 2100 2101 2375 2376 2377 3000 3002 3222 5083 6379 8080 8081 8443 8888 9000 9080 9081 9090 9180 9443 2379 2380 2222 2299 6677 8199 8299 8399 8822 21001 21002 30010; do
  out=$(curl -s -m 3 -o /tmp/gw_$p -w '%{http_code}:%{size_download}' "http://172.20.0.1:$p/" 2>/dev/null)
  echo "port $p -> $out"
done
echo "== bodies of interesting =="
for p in 8080 9080 2375 2376 8081 8888 9090; do
  echo "--- $p ---"; head -c 300 /tmp/gw_$p 2>/dev/null; echo
done
} > /www/snap/gwscan.out 2>&1