#!/bin/bash
# 干净可用率测量：没有并发下载，间隔 3 秒，30 次
set -u

BASE=https://relay.xxmxxs.top
UA='LanRemote/1.8.0'

echo "  先静置 20 秒，等 4G 链路缓过来…"
sleep 20

echo
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

ok=0
fail=0
declare -a bad
for i in $(seq 1 30); do
    c=$(curl -s -o /dev/null -w '%{http_code}' --max-time 25 \
        -H "User-Agent: $UA" "$BASE/v1/health")
    if [ "$c" = "200" ]; then
        ok=$((ok + 1))
    else
        fail=$((fail + 1))
        bad+=("$i:$c")
    fi
    printf "  %2d: %s\n" "$i" "$c"
    sleep 3
done

echo
echo "  ──────────────────────────────"
echo "  可用 $ok/30 = $((ok * 100 / 30))%"
echo "  失败 $fail 次: ${bad[*]:-无}"

echo
echo "  失败时隧道连接数变化（看是不是掉到 1）:"
echo "    $(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 8 行:"
tail -8 /root/lanremote-relay/watchdog.log 2>/dev/null | sed 's/^/    /'

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