754 lines
31 KiB
JavaScript
754 lines
31 KiB
JavaScript
'use strict';
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const http = require('http');
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const https = require('https');
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const http2 = require('http2');
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const net = require('net');
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const crypto = require('crypto');
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// os 模块不引用 — 避免暴露真实主机信息
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// ─── 配置 ───────────────────────────────────────────────
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const UPSTREAM_HOST = process.env.UPSTREAM_HOST || 'api.anthropic.com';
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const LISTEN_PORT = parseInt(process.env.PROXY_PORT || '3456', 10);
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const LISTEN_HOST = process.env.PROXY_HOST || '127.0.0.1';
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const UPSTREAM_PROXY = process.env.UPSTREAM_PROXY || '';
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const CONNECT_TIMEOUT = parseInt(process.env.CONNECT_TIMEOUT || '30000', 10);
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const IDLE_TIMEOUT = parseInt(process.env.IDLE_TIMEOUT || '600000', 10);
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const TELEMETRY_ENABLED = process.env.TELEMETRY_ENABLED !== 'false'; // 默认开启
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const DD_API_KEY = process.env.DD_API_KEY || 'pubbbf48e6d78dae54bceaa4acf463299bf';
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const CLI_VERSION = process.env.CLI_VERSION || '2.1.88';
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const BUILD_TIME = process.env.BUILD_TIME || '2026-03-31T01:39:46Z';
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// 伪装的 Node 版本（CLI 2.1.88 打包的 Bun 报告的 Node 兼容版本）
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const FAKE_NODE_VERSION = process.env.FAKE_NODE_VERSION || 'v24.3.0';
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const log = (level, msg, extra = {}) => {
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const entry = { time: new Date().toISOString(), level, msg, ...extra };
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process.stderr.write(JSON.stringify(entry) + '\n');
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};
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const HEALTH_PATH = '/__health';
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const h2Hosts = new Set();
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// Strip userinfo (user:pass) from proxy URL for safe logging
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function redactProxyURL(raw) {
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if (!raw) return '';
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try {
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const u = new URL(raw);
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u.username = '';
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u.password = '';
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return u.toString();
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} catch { return '<redacted-proxy-url>'; }
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}
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const h2Sessions = new Map();
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// ─── 虚拟主机身份生成 ─────────────────────────────────────
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// 每个账号基于 seed 生成全局唯一的主机身份，看起来像一台真实的个人开发机
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// 匹配 CLI 的 OTEL detectResources: hostDetector + processDetector + serviceInstanceIdDetector
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//
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// 设计原则：
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// 1. 同一账号（seed）永远产出同一台"机器"的特征
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// 2. 不同账号的特征互不相同（无共享池、无碰撞）
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// 3. 每个字段都像人手动设置的，不是程序生成的
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// ─── macOS 主机身份词表 ──────────────────────────────────────────
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// macOS 用户 hostname 习惯: "alex-MBP", "sam-MacBook-Pro" 等
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const MBP_NAMES = ['alex','sam','chris','max','lee','kai','jamie','taylor','morgan','casey',
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'drew','avery','riley','blake','jordan','ryan','parker','quinn','reese','cameron'];
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const MBP_SUFFIX = ['-MBP','-MacBook','-MacBook-Pro','-MacBook-Air',"s-MBP","s-MacBook","s-MacBook-Pro"];
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function generateHostIdentity(seed) {
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const h = (s) => crypto.createHash('sha256').update(seed + ':' + s).digest();
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// ── hostname: macOS 风格 ──
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const hb = h('hostname');
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const name = MBP_NAMES[hb.readUInt8(0) % MBP_NAMES.length];
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const sfx = MBP_SUFFIX[hb.readUInt8(1) % MBP_SUFFIX.length];
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const hostname = `${name}${sfx}`;
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// ── username: 取自 hostname 名字（真实 Mac 行为） ──
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const username = name;
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// ── terminal: macOS 常见终端分布 ──
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const termRoll = h('terminal').readUInt8(0) % 100;
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const terminal = termRoll < 75 ? 'xterm-256color' :
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termRoll < 88 ? 'screen-256color' :
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termRoll < 96 ? 'alacritty' : 'kitty';
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// ── shell: macOS 默认 zsh（Catalina+）；部分用 bash/fish ──
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const shellRoll = h('shell').readUInt8(0) % 100;
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const shell = shellRoll < 65 ? '/bin/zsh' :
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shellRoll < 82 ? '/usr/local/bin/zsh' :
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shellRoll < 93 ? '/bin/bash' : '/opt/homebrew/bin/fish';
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// ── host.id: macOS IOPlatformUUID 格式（大写 UUID） ──
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const mid = h('machine-id');
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const machineId = [
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mid.slice(0,4).toString('hex').toUpperCase(),
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mid.slice(4,6).toString('hex').toUpperCase(),
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mid.slice(6,8).toString('hex').toUpperCase(),
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mid.slice(8,10).toString('hex').toUpperCase(),
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mid.slice(10,16).toString('hex').toUpperCase(),
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].join('-');
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// ── PID: macOS GUI 应用 PID 通常较小 ──
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const pid = 500 + Math.floor(Math.random() * 8000);
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// ── macOS 版本: 13(Ventura)/14(Sonoma)/15(Sequoia) ──
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const kb = h('kernel');
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const macosMajor = 13 + (kb.readUInt8(0) % 3);
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const macosMinor = kb.readUInt8(1) % 8;
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const macosPatch = kb.readUInt8(2) % 5;
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// Darwin 内核: macOS 13=22.x, 14=23.x, 15=24.x
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const darwinMajor = 22 + (macosMajor - 13);
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const darwinMinor = kb.readUInt8(3) % 7;
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const darwinPatch = kb.readUInt8(4) % 5;
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const osVersion = `${macosMajor}.${macosMinor}.${macosPatch}`;
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// ── arch: Apple Silicon arm64 占 70%，Intel x64 占 30% ──
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const arch = h('arch').readUInt8(0) % 100 < 70 ? 'arm64' : 'x64';
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// ── 可执行文件路径: macOS 常见安装位置 ──
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const pathRoll = h('execpath').readUInt8(0) % 100;
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const executablePath = pathRoll < 50 ? `/Users/${username}/.claude/local/claude` :
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pathRoll < 80 ? '/usr/local/bin/claude' :
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pathRoll < 95 ? `/Users/${username}/.local/bin/claude` :
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'/opt/homebrew/bin/claude';
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return {
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hostname, username, terminal, shell, machineId, pid, arch,
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osType: 'Darwin',
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osVersion,
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kernelRelease: `${darwinMajor}.${darwinMinor}.${darwinPatch}`,
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serviceInstanceId: crypto.randomUUID(),
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executablePath,
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executableName: 'claude',
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command: 'claude',
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commandArgs: [],
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runtimeName: 'nodejs',
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runtimeVersion: FAKE_NODE_VERSION.replace('v', ''),
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ripgrepVersion: (() => {
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const rv = h('ripgrep');
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return ['14.1.1','14.1.0','14.0.2','13.0.0','13.0.1','14.0.1','14.0.0'][rv.readUInt8(0) % 7];
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})(),
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ripgrepPath: (() => {
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const rp = h('rgpath');
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return [
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'/opt/homebrew/bin/rg',
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'/usr/local/bin/rg',
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`/Users/${username}/.cargo/bin/rg`,
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'/usr/local/opt/ripgrep/bin/rg',
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][rp.readUInt8(0) % 4];
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})(),
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mcpServerCount: 1 + (h('mcp').readUInt8(0) % 5),
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mcpFailCount: h('mcp').readUInt8(1) % 3,
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};
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}
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// ─── 遥测模拟 ────────────────────────────────────────────
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// 每个 device_id 的会话状态
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const sessionStates = new Map();
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function getOrCreateSession(deviceId) {
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if (sessionStates.has(deviceId)) return sessionStates.get(deviceId);
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const hostId = generateHostIdentity(deviceId);
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const state = {
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sessionId: crypto.randomUUID(),
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deviceId,
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hostId,
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startTime: Date.now(),
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requestCount: 0,
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// 追踪 ripgrep 是否已上报
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ripgrepReported: false,
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};
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sessionStates.set(deviceId, state);
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return state;
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}
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function generateDeviceId(accountSeed) {
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return crypto.createHash('sha256').update(`device:${accountSeed}`).digest('hex');
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}
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// ─── OTEL Resource Attributes (匹配 CLI 的 detectResources) ───
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function buildEnvBlock(hostId) {
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const platformStr = 'darwin';
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return {
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platform: platformStr,
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node_version: FAKE_NODE_VERSION,
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terminal: hostId.terminal,
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package_managers: 'npm,pnpm',
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runtimes: 'deno,node',
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is_running_with_bun: true,
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is_ci: false,
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is_claubbit: false,
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is_github_action: false,
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is_claude_code_action: false,
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is_claude_ai_auth: false,
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version: CLI_VERSION,
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arch: hostId.arch,
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is_claude_code_remote: false,
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deployment_environment: `unknown-${platformStr}`,
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is_conductor: false,
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version_base: CLI_VERSION,
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build_time: BUILD_TIME,
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is_local_agent_mode: false,
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vcs: 'git',
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platform_raw: platformStr,
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};
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}
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function buildProcessMetrics(uptime) {
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// 模拟真实 CLI 的内存曲线：RSS 随 uptime 缓慢增长
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const baseRss = 180_000_000 + Math.min(uptime * 50_000, 200_000_000);
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const rss = Math.floor(baseRss + Math.random() * 80_000_000);
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const heapTotal = Math.floor(rss * 0.6 + Math.random() * 10_000_000);
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const heapUsed = Math.floor(heapTotal * 0.5 + Math.random() * heapTotal * 0.3);
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return Buffer.from(JSON.stringify({
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uptime,
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rss,
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heapTotal,
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heapUsed,
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external: 14_000_000 + Math.floor(Math.random() * 2_000_000),
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arrayBuffers: Math.floor(Math.random() * 200_000),
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constrainedMemory: 51539607552,
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cpuUsage: {
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user: Math.floor(uptime * 10_000 + Math.random() * 300_000),
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system: Math.floor(uptime * 2_000 + Math.random() * 80_000),
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},
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cpuPercent: Math.random() * 200,
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})).toString('base64');
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}
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function buildEvent(eventName, session, model, betas, extraData, timestampOverride) {
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const uptime = (Date.now() - session.startTime) / 1000;
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const processMetrics = buildProcessMetrics(uptime);
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// 缓存最近一次的 process metrics，供 DataDog 日志复用（保持两边一致）
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session._lastProcessMetrics = { uptime, raw: processMetrics };
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const eventData = {
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event_name: eventName,
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client_timestamp: timestampOverride || new Date().toISOString(),
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model: model || 'claude-sonnet-4-6',
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session_id: session.sessionId,
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user_type: 'external',
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betas: betas || 'claude-code-20250219,interleaved-thinking-2025-05-14',
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env: buildEnvBlock(session.hostId),
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entrypoint: 'cli',
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is_interactive: true,
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client_type: 'cli',
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process: processMetrics,
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event_id: crypto.randomUUID(),
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device_id: session.deviceId,
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// 注意：不加 resource 字段 — event_logging/batch 是自定义端点，
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// OTEL resource attributes 由 CLI 通过单独的 OTLP exporter 发送，不在这里
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};
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// 合并额外字段（用于特定事件的附加数据）
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if (extraData) Object.assign(eventData, extraData);
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return {
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event_type: 'ClaudeCodeInternalEvent',
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event_data: eventData,
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};
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}
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// 发送遥测到 api.anthropic.com/api/event_logging/batch
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function sendTelemetryEvents(events, session) {
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if (!TELEMETRY_ENABLED || events.length === 0) return;
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const body = JSON.stringify({ events });
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const headers = {
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'Accept': 'application/json, text/plain, */*',
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'Content-Type': 'application/json',
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'User-Agent': `claude-code/${CLI_VERSION}`,
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'x-service-name': 'claude-code',
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'Content-Length': Buffer.byteLength(body),
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};
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// 注意：真实 CLI 2.1.84 的 event_logging/batch 不发 traceparent
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// traceparent 仅在 OTLP exporter（单独通道）中使用，不在这个端点
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const opts = {
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hostname: 'api.anthropic.com',
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port: 443,
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path: '/api/event_logging/batch',
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method: 'POST',
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headers,
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timeout: 10000,
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};
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const req = https.request(opts, (res) => {
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res.resume(); // drain
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log('debug', 'telemetry_sent', { status: res.statusCode, events: events.length });
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});
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req.on('error', (err) => {
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log('debug', 'telemetry_error', { error: err.message });
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});
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req.on('timeout', () => req.destroy());
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req.end(body);
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}
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// 发送 DataDog 日志
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function sendDatadogLog(eventName, session, model) {
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if (!TELEMETRY_ENABLED) return;
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const hostId = session.hostId;
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const uptime = (Date.now() - session.startTime) / 1000;
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// 复用 Anthropic 事件侧缓存的 process metrics（保持两边数值一致）
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// 如果没有缓存（首次调用），现场生成
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let pm;
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if (session._lastProcessMetrics && Math.abs(session._lastProcessMetrics.uptime - uptime) < 2) {
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pm = JSON.parse(Buffer.from(session._lastProcessMetrics.raw, 'base64').toString());
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} else {
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const baseRss = 180_000_000 + Math.min(uptime * 50_000, 200_000_000);
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const rss = Math.floor(baseRss + Math.random() * 80_000_000);
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const heapTotal = Math.floor(rss * 0.6 + Math.random() * 10_000_000);
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const heapUsed = Math.floor(heapTotal * 0.5 + Math.random() * heapTotal * 0.3);
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pm = {
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uptime,
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rss,
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heapTotal,
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heapUsed,
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external: 14_000_000 + Math.floor(Math.random() * 2_000_000),
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arrayBuffers: Math.floor(Math.random() * 10_000),
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constrainedMemory: 0,
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cpuUsage: {
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user: Math.floor(uptime * 10_000 + Math.random() * 300_000),
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system: Math.floor(uptime * 2_000 + Math.random() * 80_000),
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},
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};
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}
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const entry = {
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ddsource: 'nodejs',
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ddtags: `event:${eventName},arch:${hostId.arch},client_type:cli,model:${model || 'claude-sonnet-4-6'},platform:darwin,user_type:external,version:${CLI_VERSION},version_base:${CLI_VERSION}`,
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message: eventName,
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service: 'claude-code',
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hostname: hostId.hostname,
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env: 'external',
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model: model || 'claude-sonnet-4-6',
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session_id: session.sessionId,
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user_type: 'external',
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entrypoint: 'cli',
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is_interactive: 'true',
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client_type: 'cli',
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process_metrics: pm,
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platform: 'darwin',
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platform_raw: 'darwin',
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arch: hostId.arch,
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node_version: FAKE_NODE_VERSION,
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version: CLI_VERSION,
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version_base: CLI_VERSION,
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build_time: BUILD_TIME,
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deployment_environment: 'unknown-darwin',
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vcs: 'git',
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};
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const body = JSON.stringify([entry]);
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const opts = {
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hostname: 'http-intake.logs.us5.datadoghq.com',
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port: 443,
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path: '/api/v2/logs',
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method: 'POST',
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headers: {
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'Accept': 'application/json, text/plain, */*',
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'Content-Type': 'application/json',
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'User-Agent': 'axios/1.13.6',
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'dd-api-key': DD_API_KEY,
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'Content-Length': Buffer.byteLength(body),
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},
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timeout: 10000,
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};
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const req = https.request(opts, (res) => { res.resume(); });
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req.on('error', () => {});
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req.on('timeout', () => req.destroy());
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req.end(body);
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}
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// 请求前发遥测（模拟 CLI 启动 + 初始化事件）
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function emitPreRequestTelemetry(reqHeaders, body) {
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const accountSeed = reqHeaders['x-forwarded-host'] || 'default';
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const deviceId = generateDeviceId(accountSeed + ':' + (reqHeaders['authorization'] || '').slice(-16));
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const session = getOrCreateSession(deviceId);
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session.requestCount++;
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// 从请求体解析真实 model
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let model = 'claude-sonnet-4-6';
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try {
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const parsed = JSON.parse(body.toString());
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if (parsed.model) model = parsed.model;
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} catch (_) {}
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const betas = reqHeaders['anthropic-beta'] || 'claude-code-20250219,context-1m-2025-08-07,interleaved-thinking-2025-05-14,redact-thinking-2026-02-12,context-management-2025-06-27,prompt-caching-scope-2026-01-05,effort-2025-11-24,token-efficient-tools-2026-03-28,advisor-tool-2026-03-01';
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// 首次请求：发完整启动事件序列（匹配真实 CLI 的时序）
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if (session.requestCount === 1) {
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const hostId = session.hostId;
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// 生成递增的时间戳，模拟真实 CLI 启动流程的时间差
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const baseTime = Date.now();
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const ts = (offsetMs) => new Date(baseTime + offsetMs).toISOString();
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// 第一批：启动 + 工具检测 + MCP 连接事件
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const batch1 = [
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buildEvent('tengu_started', session, model, betas, null, ts(0)),
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buildEvent('tengu_init', session, model, betas, null, ts(80 + Math.floor(Math.random() * 120))),
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// tengu_ripgrep_availability — CLI 必发的工具检测事件，版本/路径按账号不同
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buildEvent('tengu_ripgrep_availability', session, model, betas, {
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ripgrep_available: true,
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ripgrep_version: hostId.ripgrepVersion,
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ripgrep_path: hostId.ripgrepPath,
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}, ts(200 + Math.floor(Math.random() * 150))),
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];
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// MCP 连接事件：数量按账号不同（真实用户配置的 MCP server 数量差异很大）
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let mcpOffset = 400;
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const mcpSuccessCount = hostId.mcpServerCount - hostId.mcpFailCount;
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for (let i = 0; i < hostId.mcpFailCount; i++) {
|
||
mcpOffset += 100 + Math.floor(Math.random() * 300);
|
||
batch1.push(buildEvent('tengu_mcp_server_connection_failed', session, model, betas, null, ts(mcpOffset)));
|
||
}
|
||
for (let i = 0; i < mcpSuccessCount; i++) {
|
||
mcpOffset += 200 + Math.floor(Math.random() * 500);
|
||
batch1.push(buildEvent('tengu_mcp_server_connection_succeeded', session, model, betas, null, ts(mcpOffset)));
|
||
}
|
||
|
||
session.ripgrepReported = true;
|
||
sendTelemetryEvents(batch1, session);
|
||
sendDatadogLog('tengu_started', session, model);
|
||
sendDatadogLog('tengu_init', session, model);
|
||
|
||
// 第二批延迟发送（真实 CLI 间隔约 30 秒）
|
||
setTimeout(() => {
|
||
const batch2 = [
|
||
buildEvent('tengu_session_init', session, model, betas),
|
||
buildEvent('tengu_context_loaded', session, model, betas),
|
||
];
|
||
sendTelemetryEvents(batch2, session);
|
||
}, 25000 + Math.floor(Math.random() * 10000));
|
||
}
|
||
|
||
// 每次请求：发 request_started
|
||
const events = [
|
||
buildEvent('tengu_api_request_started', session, model, betas),
|
||
];
|
||
sendTelemetryEvents(events, session);
|
||
}
|
||
|
||
// 请求后发遥测
|
||
function emitPostRequestTelemetry(reqHeaders, statusCode, body) {
|
||
const accountSeed = reqHeaders['x-forwarded-host'] || 'default';
|
||
const deviceId = generateDeviceId(accountSeed + ':' + (reqHeaders['authorization'] || '').slice(-16));
|
||
const session = getOrCreateSession(deviceId);
|
||
|
||
let model = 'claude-sonnet-4-6';
|
||
try {
|
||
const parsed = JSON.parse(body.toString());
|
||
if (parsed.model) model = parsed.model;
|
||
} catch (_) {}
|
||
|
||
const betas = reqHeaders['anthropic-beta'] || 'claude-code-20250219,context-1m-2025-08-07,interleaved-thinking-2025-05-14,redact-thinking-2026-02-12,context-management-2025-06-27,prompt-caching-scope-2026-01-05,effort-2025-11-24,token-efficient-tools-2026-03-28,advisor-tool-2026-03-01';
|
||
|
||
// 请求完成事件
|
||
const events = [
|
||
buildEvent('tengu_api_request_completed', session, model, betas),
|
||
buildEvent('tengu_conversation_turn_completed', session, model, betas),
|
||
];
|
||
sendTelemetryEvents(events, session);
|
||
sendDatadogLog('tengu_api_request_completed', session, model);
|
||
|
||
// 模拟错误遥测（低概率，匹配 TelemetrySafeError）
|
||
if (statusCode >= 400 && Math.random() < 0.5) {
|
||
const errorEvent = buildEvent('tengu_api_request_error', session, model, betas, {
|
||
error_type: 'TelemetrySafeError',
|
||
error_code: statusCode,
|
||
error_message: statusCode === 429 ? 'rate_limit_exceeded' :
|
||
statusCode === 529 ? 'overloaded' :
|
||
statusCode >= 500 ? 'server_error' : 'client_error',
|
||
});
|
||
sendTelemetryEvents([errorEvent], session);
|
||
}
|
||
|
||
// 随机发额外事件（仅使用已知的真实 CLI 事件名）
|
||
if (Math.random() < 0.3) {
|
||
setTimeout(() => {
|
||
const extra = [
|
||
buildEvent('tengu_tool_use_completed', session, model, betas),
|
||
];
|
||
sendTelemetryEvents(extra, session);
|
||
}, 2000 + Math.floor(Math.random() * 5000));
|
||
}
|
||
}
|
||
|
||
// ─── H2 session 管理 ────────────────────────────────────
|
||
function getOrCreateH2Session(host) {
|
||
const existing = h2Sessions.get(host);
|
||
if (existing && !existing.closed && !existing.destroyed) return existing;
|
||
if (existing) { try { existing.close(); } catch (_) {} }
|
||
|
||
const session = http2.connect(`https://${host}`);
|
||
session.on('error', (err) => {
|
||
log('warn', 'h2_session_error', { host, error: err.message });
|
||
h2Sessions.delete(host);
|
||
try { session.close(); } catch (_) {}
|
||
});
|
||
session.on('close', () => h2Sessions.delete(host));
|
||
session.on('goaway', () => { h2Sessions.delete(host); try { session.close(); } catch (_) {} });
|
||
session.setTimeout(IDLE_TIMEOUT, () => { session.close(); h2Sessions.delete(host); });
|
||
h2Sessions.set(host, session);
|
||
return session;
|
||
}
|
||
|
||
function waitForConnect(session) {
|
||
if (session.connected) return Promise.resolve();
|
||
return new Promise((resolve, reject) => {
|
||
session.once('connect', resolve);
|
||
session.once('error', reject);
|
||
const t = setTimeout(() => reject(new Error('h2 connect timeout')), CONNECT_TIMEOUT);
|
||
session.once('connect', () => clearTimeout(t));
|
||
});
|
||
}
|
||
|
||
// ─── CONNECT 隧道 ────────────────────────────────────────
|
||
function connectViaProxy(proxyUrl, targetHost, targetPort) {
|
||
return new Promise((resolve, reject) => {
|
||
const proxy = new URL(proxyUrl);
|
||
const conn = net.connect(parseInt(proxy.port || '80', 10), proxy.hostname, () => {
|
||
const auth = proxy.username
|
||
? `Proxy-Authorization: Basic ${Buffer.from(`${decodeURIComponent(proxy.username)}:${decodeURIComponent(proxy.password || '')}`).toString('base64')}\r\n`
|
||
: '';
|
||
conn.write(`CONNECT ${targetHost}:${targetPort} HTTP/1.1\r\nHost: ${targetHost}:${targetPort}\r\n${auth}\r\n`);
|
||
});
|
||
conn.once('error', reject);
|
||
conn.setTimeout(CONNECT_TIMEOUT, () => conn.destroy(new Error('CONNECT timeout')));
|
||
let buf = '';
|
||
conn.on('data', function onData(chunk) {
|
||
buf += chunk.toString();
|
||
const idx = buf.indexOf('\r\n\r\n');
|
||
if (idx === -1) return;
|
||
conn.removeListener('data', onData);
|
||
const code = parseInt(buf.split(' ')[1], 10);
|
||
if (code === 200) { conn.setTimeout(0); resolve(conn); }
|
||
else { conn.destroy(); reject(new Error(`CONNECT ${code}`)); }
|
||
});
|
||
});
|
||
}
|
||
|
||
// ─── 收集请求体 ──────────────────────────────────────────
|
||
function collectBody(req) {
|
||
return new Promise((resolve) => {
|
||
const chunks = [];
|
||
req.on('data', (c) => chunks.push(c));
|
||
req.on('end', () => resolve(Buffer.concat(chunks)));
|
||
req.on('error', () => resolve(Buffer.concat(chunks)));
|
||
});
|
||
}
|
||
|
||
// ─── H1 代理 ─────────────────────────────────────────────
|
||
function sendViaH1(targetHost, method, path, reqHeaders, body, res, savedHeaders) {
|
||
return new Promise((resolve) => {
|
||
const headers = { ...reqHeaders, host: targetHost };
|
||
['x-forwarded-host', 'connection', 'keep-alive', 'proxy-connection', 'transfer-encoding'].forEach(h => delete headers[h]);
|
||
if (body.length > 0) headers['content-length'] = String(body.length);
|
||
|
||
const opts = { hostname: targetHost, port: 443, path, method, headers, servername: targetHost, timeout: CONNECT_TIMEOUT };
|
||
const startTime = Date.now();
|
||
|
||
const finish = (requestOpts) => {
|
||
const proxyReq = https.request(requestOpts);
|
||
proxyReq.on('response', (proxyRes) => {
|
||
log('info', 'proxy_response', { host: targetHost, status: proxyRes.statusCode, path, proto: 'h1' });
|
||
const rh = { ...proxyRes.headers };
|
||
delete rh['connection']; delete rh['keep-alive'];
|
||
res.writeHead(proxyRes.statusCode, rh);
|
||
proxyRes.pipe(res, { end: true });
|
||
// 请求完成后发遥测
|
||
if (path.includes('/v1/messages') && savedHeaders) {
|
||
emitPostRequestTelemetry(savedHeaders, proxyRes.statusCode, body);
|
||
}
|
||
resolve('ok');
|
||
});
|
||
proxyReq.on('error', (err) => {
|
||
if (err.message === 'socket hang up' && (Date.now() - startTime) < 2000) {
|
||
log('info', 'h1_rejected_switching_to_h2', { host: targetHost });
|
||
h2Hosts.add(targetHost);
|
||
sendViaH2(targetHost, method, path, reqHeaders, body, res, savedHeaders).then(() => resolve('h2'));
|
||
return;
|
||
}
|
||
log('error', 'h1_error', { error: err.message, host: targetHost, path });
|
||
if (!res.headersSent) { res.writeHead(502); res.end(JSON.stringify({ error: 'upstream_connection_error' })); }
|
||
resolve('error');
|
||
});
|
||
proxyReq.on('timeout', () => proxyReq.destroy(new Error('timeout')));
|
||
proxyReq.end(body);
|
||
};
|
||
|
||
// 动态上游代理：优先使用 per-request 的 X-Upstream-Proxy，回退到全局 UPSTREAM_PROXY
|
||
const upstreamProxy = reqHeaders['x-upstream-proxy'] || UPSTREAM_PROXY;
|
||
// 清除内部 header，不传给上游
|
||
delete headers['x-upstream-proxy'];
|
||
|
||
if (upstreamProxy) {
|
||
connectViaProxy(upstreamProxy, targetHost, 443)
|
||
.then((socket) => { opts.socket = socket; opts.agent = false; finish(opts); })
|
||
.catch((err) => { log('error', 'tunnel_failed', { error: err.message, proxy: redactProxyURL(upstreamProxy) }); if (!res.headersSent) { res.writeHead(502); res.end(JSON.stringify({ error: 'upstream_connection_error' })); } resolve('error'); });
|
||
} else {
|
||
finish(opts);
|
||
}
|
||
});
|
||
}
|
||
|
||
// ─── H2 代理 ─────────────────────────────────────────────
|
||
async function sendViaH2(targetHost, method, path, reqHeaders, body, res, savedHeaders) {
|
||
try {
|
||
const session = getOrCreateH2Session(targetHost);
|
||
await waitForConnect(session);
|
||
|
||
const headers = {};
|
||
const skip = new Set(['host','connection','keep-alive','proxy-connection','transfer-encoding','upgrade','x-forwarded-host','http2-settings']);
|
||
for (const [k, v] of Object.entries(reqHeaders)) {
|
||
if (!skip.has(k.toLowerCase())) headers[k] = v;
|
||
}
|
||
headers[':method'] = method;
|
||
headers[':path'] = path;
|
||
headers[':authority'] = targetHost;
|
||
headers[':scheme'] = 'https';
|
||
if (body.length > 0) headers['content-length'] = String(body.length);
|
||
|
||
const stream = session.request(headers);
|
||
let responded = false;
|
||
|
||
stream.on('response', (h2h) => {
|
||
responded = true;
|
||
const status = h2h[':status'] || 502;
|
||
const rh = {};
|
||
for (const [k, v] of Object.entries(h2h)) { if (!k.startsWith(':')) rh[k] = v; }
|
||
log('info', 'proxy_response', { host: targetHost, status, path, proto: 'h2' });
|
||
res.writeHead(status, rh);
|
||
stream.on('data', (c) => res.write(c));
|
||
stream.on('end', () => res.end());
|
||
if (path.includes('/v1/messages') && savedHeaders) {
|
||
emitPostRequestTelemetry(savedHeaders, status);
|
||
}
|
||
});
|
||
|
||
stream.on('error', (err) => {
|
||
if (err.message && err.message.includes('NGHTTP2')) {
|
||
h2Sessions.delete(targetHost);
|
||
try { session.close(); } catch (_) {}
|
||
}
|
||
if (responded) { if (!res.writableEnded) res.end(); return; }
|
||
log('error', 'h2_error', { error: err.message, host: targetHost, path });
|
||
if (!res.headersSent) { res.writeHead(502); res.end(JSON.stringify({ error: 'upstream_connection_error' })); }
|
||
});
|
||
|
||
stream.on('close', () => {
|
||
if (!responded && !res.headersSent) {
|
||
log('warn', 'h2_no_response', { host: targetHost, path });
|
||
res.writeHead(502); res.end(JSON.stringify({ error: 'upstream_connection_error' }));
|
||
} else if (!res.writableEnded) { res.end(); }
|
||
});
|
||
|
||
stream.setTimeout(CONNECT_TIMEOUT, () => stream.close());
|
||
stream.end(body);
|
||
} catch (err) {
|
||
log('error', 'h2_exception', { error: err.message, host: targetHost });
|
||
h2Sessions.delete(targetHost);
|
||
if (!res.headersSent) { res.writeHead(502); res.end(JSON.stringify({ error: 'upstream_connection_error' })); }
|
||
}
|
||
}
|
||
|
||
// ─── 请求入口 ─────────────────────────────────────────────
|
||
async function proxyRequest(req, res) {
|
||
const targetHost = req.headers['x-forwarded-host'] || UPSTREAM_HOST;
|
||
log('info', 'proxy_request', { host: targetHost, method: req.method, path: req.url });
|
||
|
||
// 保存原始 headers 用于遥测
|
||
const savedHeaders = { ...req.headers };
|
||
|
||
const body = await collectBody(req);
|
||
|
||
// 请求前发遥测（仅 /v1/messages 请求）
|
||
if (req.url.includes('/v1/messages') && TELEMETRY_ENABLED) {
|
||
emitPreRequestTelemetry(savedHeaders, body);
|
||
}
|
||
|
||
// ── Jitter 注入 ──────────────────────────────────────────────────
|
||
// 模拟人类编码间歇：80% 快速响应（80-300ms），20% 慢速思考（400-1200ms）
|
||
// 使用 -log(rand) 指数衰减使延迟尾部更接近真实键盘输入节奏
|
||
const jitterMs = (() => {
|
||
if (Math.random() < 0.80) {
|
||
return Math.floor(80 + (-Math.log(Math.random()) * 90)); // 快：~80-300ms
|
||
}
|
||
return Math.floor(400 + Math.random() * 800); // 慢：400-1200ms
|
||
})();
|
||
await new Promise(r => setTimeout(r, jitterMs));
|
||
|
||
// ── H2 / H1 路由策略 ──────────────────────────────────────────────
|
||
// 当存在 per-account 上游代理（X-Upstream-Proxy）时，强制走 H1：
|
||
// 1. H2 的 getOrCreateH2Session 不支持 CONNECT 隧道代理
|
||
// 2. 真实 CLI 用 undici 默认的 HTTP/1.1（allowH2=false），H1 更贴合指纹
|
||
// 无代理的直连请求仍可走 H2 以获得多路复用性能。
|
||
const hasUpstreamProxy = !!(req.headers['x-upstream-proxy'] || UPSTREAM_PROXY);
|
||
const H2_PREFER_HOSTS = new Set([
|
||
'api.anthropic.com',
|
||
'cloudaicompanion.googleapis.com',
|
||
'generativelanguage.googleapis.com',
|
||
'cloudcode-pa.googleapis.com',
|
||
'daily-cloudcode-pa.googleapis.com',
|
||
]);
|
||
if (!hasUpstreamProxy && (H2_PREFER_HOSTS.has(targetHost) || h2Hosts.has(targetHost))) {
|
||
await sendViaH2(targetHost, req.method, req.url, req.headers, body, res, savedHeaders);
|
||
} else {
|
||
if (hasUpstreamProxy && H2_PREFER_HOSTS.has(targetHost)) {
|
||
log('info', 'h2_downgrade_to_h1', { host: targetHost, reason: 'upstream_proxy_set' });
|
||
}
|
||
await sendViaH1(targetHost, req.method, req.url, req.headers, body, res, savedHeaders);
|
||
}
|
||
}
|
||
|
||
// ─── HTTP 服务器 ─────────────────────────────────────────
|
||
const server = http.createServer((req, res) => {
|
||
if (req.url === HEALTH_PATH) {
|
||
res.writeHead(200, { 'content-type': 'application/json' });
|
||
res.end(JSON.stringify({
|
||
status: 'ok', node: process.version, openssl: process.versions.openssl,
|
||
uptime: process.uptime(), h2Hosts: [...h2Hosts],
|
||
telemetry: TELEMETRY_ENABLED, sessions: sessionStates.size,
|
||
}));
|
||
return;
|
||
}
|
||
proxyRequest(req, res).catch((err) => {
|
||
log('error', 'unhandled', { error: err.message });
|
||
if (!res.headersSent) { res.writeHead(500); res.end('internal error'); }
|
||
});
|
||
});
|
||
|
||
server.timeout = 0;
|
||
server.keepAliveTimeout = IDLE_TIMEOUT;
|
||
server.headersTimeout = 60000;
|
||
server.listen(LISTEN_PORT, LISTEN_HOST, () => {
|
||
log('info', 'node-tls-proxy started', {
|
||
listen: `${LISTEN_HOST}:${LISTEN_PORT}`, node: process.version, openssl: process.versions.openssl,
|
||
telemetry: TELEMETRY_ENABLED,
|
||
});
|
||
});
|
||
|
||
// 定期清理过期 session（1 小时无活动）
|
||
setInterval(() => {
|
||
const now = Date.now();
|
||
for (const [id, state] of sessionStates) {
|
||
if (now - state.startTime > 3600_000) sessionStates.delete(id);
|
||
}
|
||
}, 300_000);
|
||
|
||
let stopping = false;
|
||
function shutdown(sig) {
|
||
if (stopping) return; stopping = true;
|
||
for (const s of h2Sessions.values()) try { s.close(); } catch (_) {}
|
||
h2Sessions.clear();
|
||
server.close(() => process.exit(0));
|
||
setTimeout(() => process.exit(1), 5000);
|
||
}
|
||
process.on('SIGTERM', () => shutdown('SIGTERM'));
|
||
process.on('SIGINT', () => shutdown('SIGINT'));
|
||
process.on('uncaughtException', (e) => log('error', 'uncaught', { error: e.message }));
|
||
process.on('unhandledRejection', (r) => log('error', 'rejection', { error: String(r) }));
|