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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
- 杩炴帴閿欒缈昏瘧鎴愪汉璇濓紙璇佷功/鏃堕棿/瑙ｆ瀽/瓒呮椂鍒嗗埆鎻愮ず锛?- 缁忎腑杞繛涓婂悗鐢ㄦ湇鍔″櫒鎶ョ殑鍦板潃鍒锋柊宸查厤瀵硅褰?- 鏂板灞€鍩熺綉杩炴帴椤甸潰銆佹湇鍔″櫒寤惰繜妫€娴?
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- 绠＄悊椤碉細鎵归噺鍒犻櫎銆佺綉缁滀綋妫€銆佷笅杞藉尯
- 闅ч亾鏀?HTTP/2 + 鍙岃繛鎺?
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_build/diag_conn_count.sh

@@ -0,0 +1,72 @@
+#!/bin/bash
+# 为什么只建了 1 条隧道连接？（配置是 ha-connections 2）
+#
+# 观察：
+#   100% 那次：连接数 2
+#    85% 那次：连接数 1
+#   -> 连接数直接决定可用率！缺一条就少一份冗余。
+set -u
+
+RELAY_DIR=/root/lanremote-relay
+
+echo "===== 1. 现在的连接数 ====="
+echo "  ha_connections = $(curl -s --max-time 5 http://127.0.0.1:20241/metrics 2>/dev/null | grep '^cloudflared_tunnel_ha_connections' | awk '{print $2}')"
+
+echo
+echo "===== 2. 等 90 秒，看第二条会不会自己补上 ====="
+for i in 1 2 3 4 5 6; do
+    sleep 15
+    n=$(curl -s --max-time 5 http://127.0.0.1:20241/metrics 2>/dev/null | grep '^cloudflared_tunnel_ha_connections' | awk '{print $2}')
+    echo "  ${i}5s: 连接数 = ${n:-?}"
+done
+
+echo
+echo "===== 3. 隧道日志里的注册/断开 ====="
+grep -E 'Registered tunnel connection|Connection terminated|Failed to dial|Lost connection' \
+    "$RELAY_DIR/tunnel.log" 2>/dev/null | tail -12 | sed 's/^/  /'
+
+echo
+echo "===== 4. 配置文件里的 ha-connections ====="
+grep -n 'ha-connections' /etc/systemd/system/lanremote-tunnel.service \
+    | sed 's/^/  /'
+
+echo
+echo "===== 5. 用 4 条连接试试（MSS 修好之后 TCP 多连接应该更从容）====="
+cat > /etc/systemd/system/lanremote-tunnel.service <<'EOF'
+[Unit]
+Description=LanRemote Cloudflare 具名隧道
+After=network-online.target lanremote-relay.service lanremote-nettune.service
+Wants=network-online.target lanremote-relay.service
+
+[Service]
+Type=simple
+# 协议 HTTP/2：这条线路丢 UDP 包，QUIC 撑不住（实测 48% vs 80%）
+# 连接数 4：MSS 夹好之后 TCP 多连接不再互相挤，
+#           缺一条还有三条顶着（实测连接数 1 时掉到 85%）
+ExecStart=/usr/local/bin/cloudflared tunnel --no-autoupdate --protocol http2 --edge-ip-version 4 --ha-connections 4 --retries 5 --config /root/.cloudflared/config.yml run lanremote
+Restart=always
+RestartSec=5
+MemoryMax=200M
+StandardOutput=append:/root/lanremote-relay/tunnel.log
+StandardError=append:/root/lanremote-relay/tunnel.log
+
+[Install]
+WantedBy=multi-user.target
+EOF
+systemctl daemon-reload
+systemctl restart lanremote-tunnel
+echo "  已切到 4 条，等 60 秒…"
+sleep 60
+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 "  注册 $(grep -c 'Registered tunnel connection' "$RELAY_DIR/tunnel.log" 2>/dev/null || echo 0) 次"
+
+echo
+echo "===== 6. 30 次可用率 ====="
+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' https://relay.xxmxxs.top/v1/health 2>/dev/null)
+    [ "$c" = "200" ] && ok=$((ok+1))
+    sleep 1
+done
+echo "  $ok/30 = $((ok * 100 / 30))%"