#!/bin/bash
# 为什么公网 GET 能通、POST 登记却是空响应？
#
# 被控端真正走的是 POST /v1/agent/register。
# 如果 POST 过不去，整个中转就是废的。
set -u

URL=https://relay.xxmxxs.top
BODY='{"deviceId":"diag-2","code":"482222","name":"诊断","version":"1.4.0"}'

echo "===== 1. 本地 POST（对照，应该秒回）====="
timeout 10 curl -s -H 'User-Agent: LanRemote/1.4.0' \
    -H 'Content-Type: application/json' -d "$BODY" \
    http://127.0.0.1:8080/v1/agent/register 2>&1 | head -c 200
echo

echo
echo "===== 2. 公网 POST，连打 6 次，看每次的结果 ====="
for i in $(seq 1 6); do
    C=$(timeout 25 curl -4 -s -o /tmp/post_out.txt -w '%{http_code}' \
        -H 'User-Agent: LanRemote/1.4.0' \
        -H 'Content-Type: application/json' -d "$BODY" \
        "$URL/v1/agent/register" 2>/tmp/post_err.txt)
    C=${C:-000}
    printf "  %d) HTTP %-4s 响应=%s\n" "$i" "$C" \
        "$(head -c 90 /tmp/post_out.txt 2>/dev/null)"
    if [ -s /tmp/post_err.txt ]; then
        printf "     错误: %s\n" "$(head -c 120 /tmp/post_err.txt)"
    fi
    sleep 3
done

echo
echo "===== 3. 公网 GET，同样打 6 次 ====="
for i in $(seq 1 6); do
    C=$(timeout 20 curl -4 -s -o /tmp/get_out.txt -w '%{http_code}' \
        -H 'User-Agent: LanRemote/1.4.0' "$URL/v1/health" 2>/dev/null)
    printf "  %d) HTTP %-4s body=%s\n" "$i" "${C:-000}" \
        "$(head -c 60 /tmp/get_out.txt 2>/dev/null)"
    sleep 3
done

echo
echo "===== 4. 隧道日志里的服务端错误 ====="
grep -iE 'Serve tunnel error|failed to serve|502|origin' \
    /root/lanremote-relay/tunnel.log 2>/dev/null | tail -8 | sed 's/^/  /'

echo
echo "===== 5. relay 自己的日志（有没有收到请求）====="
journalctl -u lanremote-relay --no-pager -n 12 2>/dev/null \
    | grep -viE 'Started|Stopped|Consumed' | tail -8 | sed 's/^/  /'