#!/bin/bash
# 公网间歇 530 —— 查隧道当前真实状态
set -u

echo "  relay=$(systemctl is-active lanremote-relay)  tunnel=$(systemctl is-active lanremote-tunnel)"
echo "  隧道连接数: $(curl -s --max-time 5 http://127.0.0.1:20241/metrics 2>/dev/null | grep '^cloudflared_tunnel_ha_connections' | awk '{print $2}')"

echo
echo "════════ watchdog 最近 15 行 ════════"
tail -15 /root/lanremote-relay/watchdog.log 2>/dev/null | sed 's/^/  /'

echo
echo "════════ watchdog 怎么被调起来的 ════════"
echo "  服务: $(systemctl is-active lanremote-watchdog 2>&1)"
crontab -l 2>/dev/null | grep -i watch | sed 's/^/  cron: /'
systemctl list-timers --all 2>/dev/null | grep -i watch | sed 's/^/  timer: /'

echo
echo "════════ 隧道最近的重连频率（1500 行内）════════"
for kw in 'Registered tunnel connection' 'Lost connection' 'Retrying connection' 'i/o timeout' 'context deadline'; do
    n=$(tail -1500 /root/lanremote-relay/tunnel.log 2>/dev/null | grep -c "$kw")
    printf "  %-34s %s 次\n" "$kw" "$n"
done

echo
echo "════════ 出口 IP 可达性 ════════"
python3 - <<'PY'
import socket, time
ips = ["198.41.192.107", "198.41.200.43", "198.41.192.77",
       "198.41.200.113", "198.41.192.227", "198.41.200.193",
       "198.41.192.37", "198.41.200.63"]
ok = 0
for ip in ips:
    s = socket.socket(); s.settimeout(3)
    t = time.perf_counter()
    try:
        s.connect((ip, 7844))
        print("    %-16s %4.0f ms" % (ip, (time.perf_counter()-t)*1000)); ok += 1
    except OSError:
        print("    %-16s 不通" % ip)
    finally:
        s.close()
print("    => %d/%d 可达" % (ok, len(ips)))
PY

echo
echo "════════ 公网连打 12 次 ════════"
ok=0
for i in $(seq 1 12); do
    c=$(curl -s -o /dev/null -w '%{http_code}' --max-time 15 \
        -H 'User-Agent: LanRemote/1.4.0' https://relay.xxmxxs.top/v1/health)
    [ "$c" = "200" ] && ok=$((ok+1))
    printf "    %2d: %s\n" "$i" "$c"
    sleep 1
done
echo "    可用 $ok/12"

echo
echo "════════ 本机 relay（排除源站问题）════════"
for i in 1 2 3; do
    printf "    %d: HTTP %s\n" "$i" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 8 http://127.0.0.1:8080/v1/health)"
done

echo
echo "════════ 网络质量 ════════"
ping -c 10 -W 2 1.1.1.1 2>/dev/null | tail -2 | sed 's/^/  /'