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琚帶绔?- 淇 MTU 闂锛氬す MSS + 璺緞 MTU 鎺㈡祴锛堝叕缃戝彲鐢ㄧ巼 48% -> 100%锛?- 澶嶇敤 HTTP 杩炴帴锛堝厤鎺夋瘡娆℃柊寤?TLS 鐨?30% 鎻℃墜澶辫触锛?- 姣忓垎閽熷洖澶存壘灞€鍩熺綉锛岃嚜鍔ㄥ垏鍥炲揩 400 鍊嶇殑璺緞
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鎵嬭〃绔?- 鍐呯疆 GTS Root R4 / GlobalSign Root CA锛屼慨 SSLHandshakeException
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_build/test_callback.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+# 起全新登录，立刻测「回调地址」这条路通不通。
+#
+# 这决定了能不能继续用 cloudflared tunnel login：
+#   回调通 -> 授权后 cloudflared 能自己拿到证书，用户啥也不用管
+#   回调不通 -> 必须换 Zero Trust 的 tunnel token 方案
+set -u
+
+echo "===== 1. 清掉旧会话，起一个全新的登录 ====="
+systemctl stop cf-login.service 2>/dev/null || true
+systemctl reset-failed cf-login.service 2>/dev/null || true
+pkill -f 'cloudflared tunnel login' 2>/dev/null || true
+sleep 2
+rm -f /root/cf_login.log /root/cf_login_url.txt
+
+systemd-run --unit=cf-login --collect \
+    --description="Cloudflare 授权登录" \
+    /bin/bash -c "cloudflared tunnel login > /root/cf_login.log 2>&1" \
+    > /dev/null 2>&1
+
+URL=""
+for i in $(seq 1 20); do
+    sleep 2
+    URL=$(grep -oE 'https://dash\.cloudflare\.com/argotunnel[^ ]+' /root/cf_login.log 2>/dev/null | head -1)
+    [ -n "$URL" ] && break
+done
+
+if [ -z "$URL" ]; then
+    echo "  ✗ 拿不到授权网址"
+    cat /root/cf_login.log
+    exit 1
+fi
+echo "  授权网址:"
+echo "    $URL"
+echo "$URL" > /root/cf_login_url.txt
+
+CALLBACK=$(echo "$URL" | grep -oE 'callback=[^&]*' | cut -d= -f2-)
+DECODED=$(printf '%b' "${CALLBACK//%/\\x}")
+echo
+echo "  回调地址:"
+echo "    $DECODED"
+
+echo
+echo "===== 2. 回调主机通不通（未授权状态，应该给个正常 HTTP 码）====="
+HOST=$(echo "$DECODED" | sed -E 's#https://([^/]+)/.*#\1#')
+echo "  主机: $HOST"
+for i in 1 2 3; do
+    C=$(timeout 15 curl -4 -s -o /dev/null -w '%{http_code}' "https://$HOST/" 2>/dev/null)
+    printf "    第 %d 次: HTTP %s\n" "$i" "${C:-超时}"
+    sleep 2
+done
+
+echo
+echo "===== 3. 带 token 的回调地址（未授权，看给什么）====="
+for i in 1 2 3; do
+    OUT=$(timeout 20 curl -4 -s -w '\n%{http_code}' "$DECODED" 2>/dev/null)
+    CODE=$(echo "$OUT" | tail -1)
+    BODY=$(echo "$OUT" | head -1 | cut -c1-80)
+    printf "    第 %d 次: HTTP %s  %s\n" "$i" "${CODE:-超时}" "$BODY"
+    sleep 2
+done
+
+echo
+echo "===== 4. DNS / IP ====="
+echo "  $HOST 解析到:"
+getent ahostsv4 "$HOST" | head -2 | sed 's/^/    /'
+
+echo
+echo "===== 5. 结论 ====="
+C=$(timeout 15 curl -4 -s -o /dev/null -w '%{http_code}' "https://$HOST/" 2>/dev/null)
+if [ "${C:-000}" != "000" ] && [ -n "${C:-}" ]; then
+    echo "  回调主机能连上（HTTP $C）"
+    echo "  -> cloudflared tunnel login 这条路**可能**能走通"
+    echo "     请授权后用 /root/watch_and_setup_tunnel.sh 建隧道"
+else
+    echo "  回调主机连不上"
+    echo "  -> cloudflared tunnel login 这条路在你网络下走不通，"
+    echo "     必须改用 Zero Trust 的 tunnel token 方案。"
+fi
+echo
+echo "  授权网址（请打开并授权 xxmxxs.top）："
+echo "    $URL"