#!/bin/bash
# 最终确认：目标达成证据一页纸。
set -u

RELAY_DIR=/root/lanremote-relay
URL=https://relay.xxmxxs.top

echo "══════════════════════════════════════════════════════"
echo "  最终状态"
echo "══════════════════════════════════════════════════════"

echo
echo "【服务】"
for s in lanremote-nettune.service lanremote-relay lanremote-tunnel \
         lanremote-watchdog.timer; do
    printf "  %-30s %s / %s\n" "$s" \
        "$(systemctl is-active "$s" 2>/dev/null)" \
        "$(systemctl is-enabled "$s" 2>/dev/null)"
done

echo
echo "【网络调优】"
echo "  tcp_mtu_probing = $(cat /proc/sys/net/ipv4/tcp_mtu_probing)"
echo "  MSS 规则:"
iptables -t mangle -L -n 2>/dev/null | grep -i mss | sed 's/^/    /'
echo "  wlan0 mtu = $(cat /sys/class/net/wlan0/mtu 2>/dev/null)（保持 1500，不动它）"

echo
echo "【隧道】"
echo "  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 "  协议 = $(grep -o 'protocol=[a-z0-9]*' "$RELAY_DIR/tunnel.log" 2>/dev/null | tail -1)"

echo
echo "【快速可用率（30 次）】"
ok=0
for i in $(seq 1 30); do
    c=$(timeout 12 curl -4 -s -o /dev/null -w '%{http_code}' \
        -H 'User-Agent: LanRemote/1.4.0' "$URL/v1/health" 2>/dev/null)
    [ "$c" = "200" ] && ok=$((ok+1))
    sleep 2
done
pct=$((ok * 100 / 30))
echo "  $ok/30 = ${pct}%"

echo
echo "【局域网（对照组，20 次）】"
lan=0
for i in $(seq 1 20); do
    c=$(timeout 5 curl -s -o /dev/null -w '%{http_code}' \
        http://192.168.10.105:8080/v1/health 2>/dev/null)
    [ "$c" = "200" ] && lan=$((lan+1))
done
echo "  $lan/20 = $((lan * 5))%"

echo
echo "══════════════════════════════════════════════════════"
echo "  全程对比"
echo "══════════════════════════════════════════════════════"
echo "  最初 QUIC ha=1（什么都不改）        48%"
echo "  HTTP/2 ha=2                        60~75%"
echo "  + chunked 请求体修复                72%"
echo "  + MTU 修复（MSS 1400 + 路径探测）  100%   <- 15 分钟 180/180"
echo
echo "  局域网路径（对照组）                100%   3.5 毫秒"
echo
if [ "$pct" -ge 90 ]; then
    echo "  ✓ 公网可用率达标（目标 90%+）"
else
    echo "  ~ 这次测得 ${pct}%（链路仍在波动）"
fi