#!/bin/bash
# 手动跑一下看 --protocol http2 为什么退出。
set -u

echo "===== 停掉服务 ====="
systemctl stop lanremote-tunnel 2>/dev/null || true
sleep 2

echo
echo "===== 前台跑 25 秒，看报什么错 ====="
echo "  (http2)"
timeout 25 cloudflared tunnel --no-autoupdate --edge-ip-version 4 \
    --protocol http2 --config /root/.cloudflared/config.yml run lanremote 2>&1 \
    | head -25 | sed 's/^/    /'

echo
echo "===== 对比：quic（之前能用的）====="
timeout 25 cloudflared tunnel --no-autoupdate --edge-ip-version 4 \
    --config /root/.cloudflared/config.yml run lanremote 2>&1 \
    | head -25 | sed 's/^/    /'

echo
echo "===== 恢复服务（用默认 QUIC）====="
python3 - <<'PY'
from pathlib import Path
unit = Path("/etc/systemd/system/lanremote-tunnel.service")
text = unit.read_text()
if "--protocol http2" in text:
    text = text.replace(" --protocol http2", "")
    unit.write_text(text)
    print("  已去掉 --protocol http2（回退到默认 QUIC）")
for line in text.splitlines():
    if line.startswith("ExecStart"):
        print("  " + line)
PY
systemctl daemon-reload
systemctl restart lanremote-tunnel
sleep 20
echo "  服务: $(systemctl is-active lanremote-tunnel)"
echo
echo "  验证："
for i in 1 2 3 4 5; do
    C=$(timeout 20 curl -4 -s -o /dev/null -w '%{http_code}' \
        -H 'User-Agent: LanRemote/1.4.0' \
        https://relay.xxmxxs.top/v1/health 2>/dev/null)
    printf "    第 %d 次: HTTP %s\n" "$i" "${C:-超时}"
    [ "$C" = "200" ] && break
    sleep 5
done