set -u
echo "=== DEFAULT_OVERLAY_BOOTSTRAP_SEEDS / DEFAULT_OVERLAY_SEED（config.js）==="
grep -n "DEFAULT_OVERLAY_BOOTSTRAP_SEEDS\|DEFAULT_OVERLAY_SEED\|DEFAULT_BASE_DOMAIN" /opt/dshs/lib/config.js | head -20
echo "--- 上下文 ---"
grep -n "DEFAULT_OVERLAY_BOOTSTRAP_SEEDS" -A 6 -B 3 /opt/dshs/lib/config.js | head -40
echo
echo "=== 中继如何生成目录文档（relays 字段）==="
grep -rn "relays" /opt/dshs/lib/net/relay/*.js | grep -v "\.map" | head -15
echo
echo "=== reachability.js 55-80 ==="
sed -n '52,80p' /opt/dshs/lib/net/reachability.js