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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 - 鐢婚潰蹇冭烦甯э細闈欐鏃剁渷娴侀噺锛屽鎴风浠嶇煡閬撴祦鏄椿鐨?- 閿佸睆鏃剁粰鍑哄彲鎿嶄綔鐨勬彁绀? 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? 鏈嶅姟鍣ㄧ - 鏀寔 chunked 璇锋眰浣擄紙淇瘡 16 绉掍竴娆＄殑杩炴帴閿欎贡涓庡ぇ闈㈢Н 502锛?- 缃戠粶璋冧紭鑴氭湰 net-tune.sh锛堝紑鏈鸿嚜鍔ㄥ簲鐢級 - 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? 鏂囨。 - 璁稿彲鍗忚 / 瀹夎鍓嶅繀璇?/ 瀹夎鍚庨』鐭ワ紙浣滆€咃細灏忛害瀛愶級
85 lines
2.7 KiB
Bash
85 lines
2.7 KiB
Bash
#!/bin/bash
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# 修 MTU 问题 —— 这很可能就是 30% 握手失败的根因。
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#
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# 证据：
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# ping 到 1.1.1.1：包 1448 通、1488 丢 33%、1500 全丢
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# ping 到 Cloudflare 边缘：包 1428 就开始丢
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# HTTPS 握手成功率 0/20（TLS 证书是大包）
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# TCP 小包握手 19/20
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# -> 接口 MTU 写 1500，实际路径扛不住，大包被丢
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#
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# 三种修法，逐个试，量效果：
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# A) tcp_mtu_probing=1 —— 内核自己探测路径 MTU
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# B) MSS 夹到 1360 —— 让对端也别发大包
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# C) 接口 MTU 降到 1400 —— 最直接
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set -u
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URL=https://relay.xxmxxs.top
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EDGE=198.41.192.107
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RELAY_DIR=/root/lanremote-relay
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https_ok() {
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local ok=0
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for _ in $(seq 1 12); do
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timeout 10 curl -4 -s -o /dev/null \
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https://www.cloudflare.com/cdn-cgi/trace 2>/dev/null && ok=$((ok+1))
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done
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echo "$ok"
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}
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tunnel_ok() {
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local ok=0
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for _ in $(seq 1 12); do
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c=$(timeout 12 curl -4 -s -o /dev/null -w '%{http_code}' \
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-H 'User-Agent: LanRemote/1.4.0' "$URL/v1/health" 2>/dev/null)
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[ "$c" = "200" ] && ok=$((ok+1))
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done
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echo "$ok"
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}
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report() {
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local label="$1"
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echo " [$label]"
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echo " HTTPS 握手成功 $(https_ok)/12"
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echo " 隧道可用 $(tunnel_ok)/12"
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}
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echo "===== 基线（什么都还没改）====="
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report "基线"
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echo
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echo "===== A) 打开 tcp_mtu_probing ====="
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sysctl -w net.ipv4.tcp_mtu_probing=1 >/dev/null 2>&1
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echo " tcp_mtu_probing = $(cat /proc/sys/net/ipv4/tcp_mtu_probing)"
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sleep 2
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report "A: mtu_probing=1"
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echo
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echo "===== B) 再夹 MSS 到 1360 ====="
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iptables -t mangle -D OUTPUT -p tcp --tcp-flags SYN,RST SYN \
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-j TCPMSS --set-mss 1360 2>/dev/null || true
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iptables -t mangle -A OUTPUT -p tcp --tcp-flags SYN,RST SYN \
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-j TCPMSS --set-mss 1360 2>/dev/null
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iptables -t mangle -A POSTROUTING -p tcp --tcp-flags SYN,RST SYN \
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-j TCPMSS --set-mss 1360 2>/dev/null
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echo " 已加 MSS=1360 规则："
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iptables -t mangle -L -n 2>/dev/null | grep -i mss | sed 's/^/ /'
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sleep 2
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report "B: + MSS 1360"
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echo
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echo "===== C) 再把 wlan0 的 MTU 降到 1400 ====="
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ip link set dev wlan0 mtu 1400 2>/dev/null && echo " wlan0 MTU = $(cat /sys/class/net/wlan0/mtu)" \
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|| echo " 改不了（可能需要重启网络）"
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sleep 3
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report "C: + MTU 1400"
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echo
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echo "===== 汇总 ====="
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echo " 看上面三组对比：哪一组 HTTPS 握手成功率明显上来，就是它。"
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echo
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echo " 当前设置："
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echo " tcp_mtu_probing = $(cat /proc/sys/net/ipv4/tcp_mtu_probing)"
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echo " wlan0 mtu = $(cat /sys/class/net/wlan0/mtu)"
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iptables -t mangle -L -n 2>/dev/null | grep -ci mss | sed 's/^/ MSS 规则数 = /'
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