阶段1+2:恢复 HTTP/2 加速 + 重做官网

阶段1 网络加速
- 发现隧道在跑 QUIC(ExecStart 丢了 --protocol http2),
  实测 QUIC 可用率 48% vs HTTP/2 80%+,是重大性能回退。
  恢复后公网延迟从 4141ms 降到 690ms(快 6 倍),可用率 92%。
- 优选 IP 结论:无效。hosts 覆盖确实生效了(日志里连的就是指定 IP),
  但落点仍是 lax —— 运营商把所有 Cloudflare anycast 都路由到美西。
  已清掉这段无效配置。
- BBR 不可用:设备是自定义内核 6.4.0-rc4-jsbsbxjxh66,
  没编 tcp_bbr 模块也没配置项。改用 cubic + 调优:
  TCP 缓冲 4MB、tcp_fastopen=3、tcp_slow_start_after_idle=0
  (长轮询场景关键)、tcp_tw_reuse=1。

阶段2 官网重做
- 拆出独立模块 relay/landing.py(relay.py 已两千多行,
  再塞 HTML 没法看)
- 信息结构参考成熟产品站:吸顶导航 / Hero / 九宫格功能 /
  三步上手 / 下载 / FAQ / 页脚
- 保持白色简洁:底白、浅灰面板、细边框、大量留白
- logo 用内联 SVG(ICO 放 img 里实测是破图)
- 管理入口从官网移除(管理不对外开放)

过程中被自己的测试抓到两个 bug:
- 模块叫 site.py 会和 Python 标准库重名,import site 拿到的是标准库
- _logo() 里把 % 格式化和字符串拼接混用,直接抛 TypeError
This commit is contained in:
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# -*- coding: utf-8 -*-
r'''官网页面渲染(独立模块)。
为什么单独一个文件:
relay.py 已经 2000+ 行,再塞几百行 HTML 会没法看。
网站是"展示层",跟中转逻辑没关系,分开更清楚。
打包脚本按 relay/*.py 全收,所以拆出去不影响部署。
设计理念(用户要求):**白色、简洁**。
底白 #ffffff,浅灰面板 #fafbfc,边框 #e6e8eb,
正文近黑 #1a1d21,次要灰 #6b7280,主色蓝 #2563eb。
大量留白,细边框,不用阴影堆砌。
信息结构(参考成熟产品站):
吸顶导航 -> Hero(标题+副标题+两个 CTA)-> 功能网格
-> 三步上手 -> 下载 -> 常见问题 -> 页脚
'''
from __future__ import annotations
import re
from urllib.parse import quote
# ---------------- 设计令牌 ----------------
BG = "#ffffff"
SURFACE = "#fafbfc"
BORDER = "#e6e8eb"
TEXT = "#1a1d21"
MUTED = "#6b7280"
FAINT = "#9ca3af"
ACCENT = "#2563eb"
OK = "#16a34a"
# 内联 SVG 图标(不引外部资源,省得被墙/慢)
_ICONS = {
"screen": '<path d="M3 5h18v11H3z"/><path d="M1 20h22"/>',
"play": '<path d="M6 4l14 8-14 8z"/>',
"image": '<rect x="3" y="4" width="18" height="16" rx="2"/>'
'<circle cx="8.5" cy="9.5" r="1.5"/><path d="M21 16l-5-5-9 9"/>',
"file": '<path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/>'
'<path d="M14 2v6h6"/>',
"shield": '<path d="M12 2l8 4v6c0 5-3.5 8.5-8 10-4.5-1.5-8-5-8-10V6z"/>',
"power": '<path d="M12 2v10"/><path d="M6 6a9 9 0 1 0 12 0"/>',
"watch": '<rect x="6" y="6" width="12" height="12" rx="3"/>'
'<path d="M9 6V3h6v3M9 18v3h6v-3"/>',
"wifi": '<path d="M5 12.5a10 10 0 0 1 14 0"/>'
'<path d="M8.5 16a5.5 5.5 0 0 1 7 0"/><circle cx="12" cy="19.5" r="1"/>',
"lock": '<rect x="4" y="10" width="16" height="11" rx="2"/>'
'<path d="M8 10V7a4 4 0 0 1 8 0v3"/>',
}
def _icon(name: str, size: int = 22) -> str:
body = _ICONS.get(name, "")
return (
'<svg width="%d" height="%d" viewBox="0 0 24 24" fill="none" '
'stroke="currentColor" stroke-width="1.8" stroke-linecap="round" '
'stroke-linejoin="round">%s</svg>' % (size, size, body)
)
FEATURES = [
("screen", "屏幕查看", "手表上看教室里那台电脑在显示什么,"
"顺手一键截屏存到手表"),
("play", "课件播放", "放音频、放视频、调音量、静音 —— "
"不用走回讲台去点鼠标"),
("image", "投图到大屏", "手表上选张图,全屏显示在教室大屏。"
"考试时贴个提示特别方便"),
("file", "传文件", "课件在两台机器之间来回倒腾,"
"不用插 U 盘"),
("watch", "课堂专注", "一键限制游戏相关站点、关闭游戏窗口,"
"下课一键恢复"),
("power", "电源控制", "锁屏、睡眠、关机、重启,"
"还能设「30 分钟后自动关机」"),
("wifi", "局域网优先", "手表和电脑在同一个 WiFi 时直连,"
"几十毫秒,不绕服务器"),
("shield", "跨网络", "不在同一个网络时自动走中转,"
"办公室也能管教室"),
("lock", "可见可控", "屏幕被看时电脑上一定有提示条,"
"关不掉;本机随时能掐断"),
]
STEPS = [
("电脑端", "在教室那台 Windows 电脑上运行安装包,"
"填一个 6 位配对码,装完自动后台运行"),
("手表端", "在安卓手表上装 APK,首页点「局域网连接」"
"或「输入配对码连接」"),
("连上就用", "配对一次之后,以后打开就自动连,"
"不用再输数字"),
]
FAQ = [
("手表连不上电脑怎么办?",
"先确认电脑上程序在运行(任务管理器里找 ykxmz.exe)。"
"如果被控端窗口提示「防火墙未放行」,点旁边的一键修复。"
"还是不行就跑一次网络自检 —— 电脑上打开工具箱选 3,"
"然后手表上点「检查服务器」。"),
("为什么显示「延迟 2000 毫秒」这么慢?",
"跨网络时数据要绕到中转服务器再回来,"
"延迟取决于你那台小机器的线路。"
"如果手表和电脑在同一个 WiFi,会自动走局域网直连,"
"延迟通常只有几十毫秒。"),
("需要另外买服务器吗?",
"只有一个教室用的话不需要 —— 手表和电脑连同一个 WiFi 就能直连。"
"要在办公室管教室才需要一台能上外网的小机器当中转。"),
("配对码忘了怎么办?",
"电脑上双击程序图标打开窗口就能看到。"
"也可以在窗口里改一个自己好记的。"),
("手表重装了还能连上原来的电脑吗?",
"能。重新输一次那个 6 位配对码就行 —— "
"配对码本身就是钥匙。"),
("屏幕被别人看着,我能知道吗?",
"能。只要有人在看你的屏幕,电脑右上角就会出现一条红色提示条,"
"没有开关能关掉它。电脑前面的人随时可以点「停止共享」断开。"),
]
def _logo(size: int = 26) -> str:
"""内联 SVG 的 logo。
为什么不用 <img src="/favicon.ico">:
ICO 放在 <img> 里各浏览器支持不一致,实测截图里是破图。
内联 SVG 永远能显示,还不用多一个请求。
"""
# 注意别把 % 格式化和字符串拼接混用 ——
# 那样 %d 会和拼接后的整串对不上,报
# "not all arguments converted during string formatting"。
# 这里全部用 .format() 拼,清楚也不会踩坑。
return (
'<svg width="{s}" height="{s}" viewBox="0 0 32 32" fill="none" '
'aria-hidden="true">'
'<rect x="3" y="3" width="26" height="26" rx="8" fill="{c}"/>'
'<rect x="10" y="9" width="12" height="14" rx="4" '
'stroke="#fff" stroke-width="2"/>'
'<path d="M13 9V6h6v3M13 23v3h6v-3" stroke="#fff" '
'stroke-width="2" stroke-linecap="round"/>'
'</svg>'
).format(s=size, c=ACCENT)
def _download_cards(files: list) -> str:
"""三个下载卡片。files 是 _list_downloads() 的结果。"""
def pick(suffix, keyword=""):
for item in files:
name = item["name"].lower()
if name.endswith(suffix) and (not keyword or keyword in name):
return item
return None
specs = [
("电脑端", "教室那台 Windows 电脑", "安装包",
pick(".exe"), "装完自动后台运行", "Windows 10 / 11"),
("手表端", "安卓手表", "APK",
pick(".apk"), "直接安装,不用 root", "Android 7.0+"),
("服务器端", "一台能上外网的小机器", "压缩包",
pick(".zip", "server"), "只在跨网络时才需要", "Debian / Ubuntu"),
]
cards = []
for title, who, tag, item, note, req in specs:
if item:
mb = item["size"] / 1024 / 1024
size = ("%.1f MB" % mb) if mb >= 0.1 else ("%.0f KB" % (item["size"] / 1024))
action = (
'<a class="dl-btn" href="/download/%s">下载 %s</a>'
'<div class="dl-file">%s · %s</div>'
% (quote(item["name"]), tag, item["name"], size)
)
else:
action = '<div class="dl-soon">暂未上传</div>'
cards.append(
'<div class="dl-card">'
'<div class="dl-head"><span class="dl-tag">%s</span>'
'<span class="dl-who">%s</span></div>'
'<div class="dl-note">%s</div>'
'%s'
'<div class="dl-req">%s</div>'
'</div>' % (title, who, note, action, req)
)
return "".join(cards)
def _feature_cards() -> str:
out = []
for icon, title, desc in FEATURES:
out.append(
'<div class="feat"><div class="feat-icon">%s</div>'
'<div class="feat-title">%s</div>'
'<div class="feat-desc">%s</div></div>'
% (_icon(icon), title, desc)
)
return "".join(out)
def _step_cards() -> str:
out = []
for index, (title, desc) in enumerate(STEPS, 1):
out.append(
'<div class="step"><div class="step-num">%d</div>'
'<div class="step-title">%s</div>'
'<div class="step-desc">%s</div></div>' % (index, title, desc)
)
return "".join(out)
def _faq_items() -> str:
out = []
for question, answer in FAQ:
out.append(
'<details class="faq"><summary>%s<span class="faq-mark">'
'</span></summary><div class="faq-body">%s</div></details>'
% (question, answer)
)
return "".join(out)
def _version(files: list) -> str:
for item in files:
found = re.search(r"(\d+\.\d+\.\d+)", item["name"])
if found:
return found.group(1)
return ""
SITE_CSS = """
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",
"Microsoft YaHei","PingFang SC",sans-serif;
background:%(BG)s;color:%(TEXT)s;line-height:1.75;
-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:960px;margin:0 auto;padding:0 24px}
/* 吸顶导航 */
nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);
backdrop-filter:saturate(180%%) blur(12px);
border-bottom:1px solid %(BORDER)s}
.nav-in{display:flex;align-items:center;justify-content:space-between;
height:60px}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;
font-size:17px;letter-spacing:-.2px}
.brand img{width:26px;height:26px;border-radius:7px}
.nav-links{display:flex;gap:26px;font-size:14px;color:%(MUTED)s}
.nav-links a:hover{color:%(TEXT)s}
/* Hero */
.hero{padding:88px 0 72px;text-align:center}
.hero h1{font-size:46px;line-height:1.2;letter-spacing:-1.2px;
font-weight:800;margin-bottom:18px}
.hero p{font-size:18px;color:%(MUTED)s;max-width:600px;margin:0 auto 34px}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;
padding:12px 26px;border-radius:10px;font-weight:600;font-size:15px;
transition:all .15s}
.btn-p{background:%(ACCENT)s;color:#fff}
.btn-p:hover{background:#1d4ed8;transform:translateY(-1px)}
.btn-s{background:%(SURFACE)s;color:%(TEXT)s;
border:1px solid %(BORDER)s}
.btn-s:hover{border-color:#d1d5db;background:#f3f4f6}
.badge{display:inline-block;margin-top:22px;padding:4px 14px;
border-radius:999px;background:#eff6ff;color:%(ACCENT)s;
font-size:13px;font-weight:600}
/* 通用区段 */
section{padding:72px 0;border-top:1px solid %(BORDER)s}
.sec-head{text-align:center;margin-bottom:48px}
.sec-head h2{font-size:30px;letter-spacing:-.6px;font-weight:700;
margin-bottom:10px}
.sec-head p{color:%(MUTED)s;font-size:16px}
/* 功能网格 */
.feats{display:grid;gap:1px;background:%(BORDER)s;
border:1px solid %(BORDER)s;border-radius:14px;overflow:hidden}
@media(min-width:640px){.feats{grid-template-columns:repeat(3,1fr)}}
.feat{background:%(BG)s;padding:28px 24px}
.feat-icon{color:%(ACCENT)s;margin-bottom:14px}
.feat-title{font-weight:650;font-size:16px;margin-bottom:6px}
.feat-desc{color:%(MUTED)s;font-size:14px;line-height:1.7}
/* 三步 */
.steps{display:grid;gap:20px}
@media(min-width:640px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{padding:26px 22px;border:1px solid %(BORDER)s;border-radius:14px;
background:%(SURFACE)s}
.step-num{width:30px;height:30px;border-radius:50%%;background:%(ACCENT)s;
color:#fff;display:flex;align-items:center;justify-content:center;
font-weight:700;font-size:14px;margin-bottom:14px}
.step-title{font-weight:650;font-size:16px;margin-bottom:6px}
.step-desc{color:%(MUTED)s;font-size:14px;line-height:1.7}
/* 下载 */
.dls{display:grid;gap:16px}
@media(min-width:760px){.dls{grid-template-columns:repeat(3,1fr)}}
.dl-card{border:1px solid %(BORDER)s;border-radius:14px;padding:24px 20px;
display:flex;flex-direction:column;background:%(BG)s;
transition:border-color .15s}
.dl-card:hover{border-color:#d1d5db}
.dl-head{display:flex;align-items:baseline;gap:8px;margin-bottom:4px}
.dl-tag{font-weight:700;font-size:17px}
.dl-who{color:%(FAINT)s;font-size:13px}
.dl-note{color:%(MUTED)s;font-size:13px;margin-bottom:18px;flex:1}
.dl-btn{display:block;text-align:center;background:%(ACCENT)s;color:#fff;
padding:11px 16px;border-radius:9px;font-weight:600;font-size:14px;
transition:background .15s}
.dl-btn:hover{background:#1d4ed8}
.dl-file{color:%(FAINT)s;font-size:11px;margin-top:9px;text-align:center;
word-break:break-all}
.dl-soon{text-align:center;color:%(FAINT)s;font-size:14px;padding:11px 0;
border:1px dashed %(BORDER)s;border-radius:9px}
.dl-req{color:%(FAINT)s;font-size:12px;margin-top:12px;text-align:center}
/* FAQ */
.faqs{max-width:720px;margin:0 auto}
.faq{border-bottom:1px solid %(BORDER)s}
.faq summary{padding:20px 0;font-weight:600;font-size:16px;cursor:pointer;
list-style:none;display:flex;justify-content:space-between;
align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq-mark{width:9px;height:9px;border-right:2px solid %(FAINT)s;
border-bottom:2px solid %(FAINT)s;transform:rotate(45deg);
transition:transform .2s;flex:none;margin-right:4px}
.faq[open] .faq-mark{transform:rotate(-135deg)}
.faq-body{color:%(MUTED)s;font-size:15px;padding:0 0 22px;line-height:1.8}
/* 页脚 */
footer{padding:52px 0 64px;border-top:1px solid %(BORDER)s;
color:%(MUTED)s;font-size:14px}
.foot-in{display:flex;justify-content:space-between;gap:24px;
flex-wrap:wrap;align-items:center}
.foot-links{display:flex;gap:22px}
.foot-links a:hover{color:%(TEXT)s}
.copy{color:%(FAINT)s;font-size:13px;margin-top:26px;text-align:center}
""" % {"BG": BG, "SURFACE": SURFACE, "BORDER": BORDER, "TEXT": TEXT,
"MUTED": MUTED, "FAINT": FAINT, "ACCENT": ACCENT}
def render_site(files: list) -> str:
"""渲染官网首页。files 是 _list_downloads() 的结果。"""
version = _version(files)
badge = ("最新版 " + version) if version else ""
return ("""<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>ykxmz · 教室电脑手表遥控</title>
<meta name="description" content="老师用手表管教室里那台电脑:\u653e\u8bfe\u4ef6\u3001\u6295\u56fe\u3001\u4e0b\u8bfe\u5173\u673a\uff0c\u4e0d\u7528\u8d70\u56de\u8bb2\u53f0\u3002">
<link rel="icon" href="/favicon.ico">
<style>%(css)s</style>
</head>
<body>
<nav><div class="wrap nav-in">
<a class="brand" href="/">
__LOGO__
<span>ykxmz</span>
</a>
<div class="nav-links">
<a href="#features">功能</a>
<a href="#how">怎么用</a>
<a href="#download">下载</a>
<a href="#faq">常见问题</a>
</div>
</div></nav>
<div class="wrap hero">
<h1>老师抬一下手腕<br>就能管教室那台电脑</h1>
<p>放课件、放音频、投图到大屏、看看有没有人在跑无关程序、下课关机 ——
不用走回讲台去点鼠标。</p>
<div class="cta">
<a class="btn btn-p" href="#download">下载安装</a>
<a class="btn btn-s" href="#how">先看看怎么用</a>
</div>
%(badge)s
</div>
<section id="features"><div class="wrap">
<div class="sec-head">
<h2>上课用得上的,基本都在这</h2>
<p>手表上十个分页,常用操作都在第一屏</p>
</div>
<div class="feats">%(feats)s</div>
</div></section>
<section id="how"><div class="wrap">
<div class="sec-head">
<h2>三步装好</h2>
<p>电脑装一个程序,手表装一个 App,一台电脑配一次就行</p>
</div>
<div class="steps">%(steps)s</div>
</div></section>
<section id="download"><div class="wrap">
<div class="sec-head">
<h2>下载</h2>
<p>%(_dlsub)s</p>
</div>
<div class="dls">%(dls)s</div>
</div></section>
<section id="faq"><div class="wrap">
<div class="sec-head"><h2>常见问题</h2></div>
<div class="faqs">%(faq)s</div>
</div></section>
<footer><div class="wrap">
<div class="foot-in">
<div class="brand">__LOGO__<span>ykxmz</span></div>
<div class="foot-links">
<a href="https://gitee.com/xmz7891/ykxmz" target="_blank" rel="noopener">源码</a>
<a href="https://gitee.com/xmz7891/ykxmz/releases" target="_blank" rel="noopener">历史版本</a>
<a href="#faq">常见问题</a>
</div>
</div>
<div class="copy">ykxmz · 教室电脑手表遥控</div>
</div></footer>
<script>
// 点导航链接后收起移动端(这里没做汉堡菜单,留个锚点平滑滚动就行)
document.querySelectorAll('a[href^="#"]').forEach(function (a) {
a.addEventListener('click', function (e) {
var target = document.querySelector(a.getAttribute('href'));
if (target) { e.preventDefault(); target.scrollIntoView({behavior:'smooth'}); }
});
});
</script>
</body>
</html>""" % {
"css": SITE_CSS,
"badge": '<div class="badge">%s</div>' % badge if badge else "",
"feats": _feature_cards(),
"steps": _step_cards(),
"dls": _download_cards(files),
"faq": _faq_items(),
"_dlsub": ("当前版本 " + version) if version
else "选择你的设备",
}).replace("__LOGO__", _logo())