331 lines
10 KiB
JavaScript
331 lines
10 KiB
JavaScript
#!/usr/bin/env node
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/**
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* 自定义 Next 生产 server：
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* - 解决 ONLYOFFICE 在 `/onlyoffice-server/*` 下的 WebSocket Upgrade 需求（socket.io / coauthoring）。
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* - 解决 Convex 在 HTTPS（frp/nginx）场景下浏览器不能连接 ws:// 的问题：通过同源 `/convex/*` 反代到本机 Convex。
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*
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* 用法：
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* - pnpm build
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* - pnpm start （默认会执行本脚本）
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*
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* 依赖环境变量：
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* - ONLYOFFICE_INTERNAL_URL：默认 http://127.0.0.1:8081
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* - CONVEX_INTERNAL_URL：默认 http://127.0.0.1:3210
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*/
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const http = require("http");
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const net = require("net");
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const path = require("path");
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const next = require("next");
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const { parse: parseUrl } = require("url");
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const ONLYOFFICE_PREFIX = "/onlyoffice-server";
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const CONVEX_PREFIX = "/convex";
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function readArgValue(flag) {
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const idx = process.argv.findIndex((x) => x === flag);
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if (idx === -1) return null;
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const v = process.argv[idx + 1];
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if (!v || v.startsWith("-")) return null;
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return v;
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}
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function resolvePort() {
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const fromArg = readArgValue("-p") || readArgValue("--port");
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const raw = fromArg || process.env.PORT || "3000";
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const n = Number(raw);
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return Number.isFinite(n) ? Math.max(1, Math.min(65535, Math.floor(n))) : 3000;
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}
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function resolveHostname() {
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return readArgValue("-H") || readArgValue("--hostname") || process.env.HOSTNAME || "0.0.0.0";
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}
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function isOnlyOfficePath(urlString) {
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try {
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const u = new URL(urlString, "http://localhost");
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return u.pathname === ONLYOFFICE_PREFIX || u.pathname.startsWith(`${ONLYOFFICE_PREFIX}/`);
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} catch {
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return false;
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}
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}
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function isConvexPath(urlString) {
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try {
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const u = new URL(urlString, "http://localhost");
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return u.pathname === CONVEX_PREFIX || u.pathname.startsWith(`${CONVEX_PREFIX}/`);
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} catch {
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return false;
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}
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}
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function buildUpstreamRequestHead(req, targetUrl, prefix) {
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const incoming = new URL(req.url || "/", "http://localhost");
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const rawPath = incoming.pathname || "/";
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const stripped = rawPath === prefix ? "/" : rawPath.slice(prefix.length) || "/";
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const basePath = String(targetUrl.pathname || "/").replace(/\/+$/, "") || "";
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const upstreamPath = `${basePath}${stripped}`.replace(/\/{2,}/g, "/") + (incoming.search || "");
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const lines = [];
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lines.push(`${req.method || "GET"} ${upstreamPath} HTTP/1.1`);
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const headers = req.headers || {};
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const headerValue = (name) => {
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const v = headers[name];
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if (!v) return "";
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return Array.isArray(v) ? v[0] : String(v);
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};
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const originLike = headerValue("origin") || headerValue("referer") || "";
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const originUrl = (() => {
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try {
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if (!originLike) return null;
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return new URL(originLike);
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} catch {
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return null;
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}
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})();
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const forwardedHostRaw =
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headerValue("x-forwarded-host") || (originUrl ? originUrl.host : "") || headerValue("host") || "";
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const forwardedProto =
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(headerValue("x-forwarded-proto") || "").split(",")[0].trim() ||
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(originUrl ? originUrl.protocol.replace(":", "") : "") ||
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"http";
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const forwardedPort = (() => {
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const fromHeader = (headerValue("x-forwarded-port") || "").split(",")[0].trim();
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if (fromHeader) return fromHeader;
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const hostHasPort = forwardedHostRaw.includes(":") ? forwardedHostRaw.split(":").pop() : "";
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if (hostHasPort && /^\d+$/.test(hostHasPort)) return hostHasPort;
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return forwardedProto === "https" ? "443" : "80";
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})();
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const forwardedHost = forwardedHostRaw.split(",")[0].trim() || "localhost";
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for (const [k, v] of Object.entries(headers)) {
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if (!v) continue;
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const key = String(k);
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if (key.toLowerCase() === "host") continue;
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if (Array.isArray(v)) {
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lines.push(`${key}: ${v.join(", ")}`);
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} else {
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lines.push(`${key}: ${String(v)}`);
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}
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}
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lines.push(`x-forwarded-host: ${forwardedHost}`);
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lines.push(`x-forwarded-proto: ${forwardedProto}`);
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lines.push(`x-forwarded-port: ${forwardedPort}`);
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lines.push(`x-forwarded-prefix: ${prefix}`);
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lines.push(`Host: ${targetUrl.host}`);
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lines.push("");
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lines.push("");
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return lines.join("\r\n");
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}
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function proxyOnlyOfficeUpgrade(req, socket, head) {
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const target = new URL((process.env.ONLYOFFICE_INTERNAL_URL || "http://127.0.0.1:8081").replace(/\/+$/, "") + "/");
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const port = Number(target.port) || (target.protocol === "https:" ? 443 : 80);
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const upstream = net.connect({ host: target.hostname, port }, () => {
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try {
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const reqHead = buildUpstreamRequestHead(req, target, ONLYOFFICE_PREFIX);
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upstream.write(reqHead);
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if (head && head.length > 0) upstream.write(head);
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socket.pipe(upstream);
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upstream.pipe(socket);
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} catch {
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try {
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socket.destroy();
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} catch {}
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try {
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upstream.destroy();
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} catch {}
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}
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});
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const onError = (err) => {
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try {
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const msg = err && err.message ? String(err.message) : String(err || "");
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console.log("[prod-server][onlyoffice-ws] proxy error", msg);
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} catch {}
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try {
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socket.destroy();
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} catch {}
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try {
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upstream.destroy();
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} catch {}
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};
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upstream.on("error", onError);
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socket.on("error", onError);
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}
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function resolveConvexInternalUrl() {
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const raw = (process.env.CONVEX_INTERNAL_URL || "http://127.0.0.1:3210").trim();
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try {
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return new URL(raw.replace(/\/+$/, "") + "/");
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} catch {
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return new URL("http://127.0.0.1:3210/");
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}
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}
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function proxyConvexUpgrade(req, socket, head) {
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const target = resolveConvexInternalUrl();
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const port = Number(target.port) || (target.protocol === "https:" ? 443 : 80);
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const upstream = net.connect({ host: target.hostname, port }, () => {
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try {
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const reqHead = buildUpstreamRequestHead(req, target, CONVEX_PREFIX);
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upstream.write(reqHead);
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if (head && head.length > 0) upstream.write(head);
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socket.pipe(upstream);
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upstream.pipe(socket);
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} catch {
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try {
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socket.destroy();
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} catch {}
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try {
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upstream.destroy();
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} catch {}
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}
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});
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const onError = (err) => {
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try {
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const msg = err && err.message ? String(err.message) : String(err || "");
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console.log("[prod-server][convex-ws] proxy error", msg);
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} catch {}
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try {
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socket.destroy();
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} catch {}
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try {
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upstream.destroy();
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} catch {}
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};
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upstream.on("error", onError);
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socket.on("error", onError);
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}
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function proxyConvexHttp(req, res) {
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const target = resolveConvexInternalUrl();
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const incoming = new URL(req.url || "/", "http://localhost");
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const rawPath = incoming.pathname || "/";
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const stripped = rawPath === CONVEX_PREFIX ? "/" : rawPath.slice(CONVEX_PREFIX.length) || "/";
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const upstreamPath = stripped + (incoming.search || "");
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const isHttps = target.protocol === "https:";
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const mod = isHttps ? require("https") : require("http");
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const headers = { ...(req.headers || {}) };
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headers.host = target.host;
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const forwardedHostRaw = String(headers["x-forwarded-host"] || req.headers.host || "");
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const forwardedHost = forwardedHostRaw.split(",")[0].trim() || "localhost";
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const forwardedProto =
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String(headers["x-forwarded-proto"] || "").split(",")[0].trim() ||
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(String(req.headers.origin || "").startsWith("https") ? "https" : "http");
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const forwardedPortRaw = String(headers["x-forwarded-port"] || "").split(",")[0].trim();
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const forwardedPort = (() => {
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if (forwardedPortRaw) return forwardedPortRaw;
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const hostHasPort = forwardedHost.includes(":") ? forwardedHost.split(":").pop() : "";
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if (hostHasPort && /^\d+$/.test(hostHasPort)) return hostHasPort;
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return forwardedProto === "https" ? "443" : "80";
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})();
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headers["x-forwarded-host"] = forwardedHost;
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headers["x-forwarded-proto"] = forwardedProto;
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headers["x-forwarded-port"] = forwardedPort;
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headers["x-forwarded-prefix"] = CONVEX_PREFIX;
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const upstreamReq = mod.request(
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{
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protocol: target.protocol,
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hostname: target.hostname,
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port: target.port || (isHttps ? 443 : 80),
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method: req.method,
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path: upstreamPath,
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headers,
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},
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(upstreamRes) => {
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res.writeHead(upstreamRes.statusCode || 502, upstreamRes.headers || {});
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upstreamRes.pipe(res);
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},
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);
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upstreamReq.on("error", (err) => {
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try {
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console.log("[prod-server][convex-http] proxy error", err && err.message ? err.message : String(err || ""));
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} catch {}
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try {
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res.statusCode = 502;
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res.end("Bad Gateway");
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} catch {}
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});
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req.pipe(upstreamReq);
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}
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async function main() {
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const port = resolvePort();
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const hostname = resolveHostname();
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const dev = false;
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const app = next({ dev, dir: path.join(__dirname, "..") });
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const handle = app.getRequestHandler();
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await app.prepare();
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const handleUpgrade = typeof app.getUpgradeHandler === "function" ? app.getUpgradeHandler() : null;
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const server = http.createServer((req, res) => {
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try {
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res.setHeader("x-mnote-prod-server", "1");
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res.setHeader("x-mnote-onlyoffice-ws-proxy", "1");
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res.setHeader("x-mnote-convex-ws-proxy", "1");
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} catch {
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// ignore
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}
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if (isConvexPath(req.url || "/")) {
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proxyConvexHttp(req, res);
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return;
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}
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const parsed = parseUrl(req.url || "/", true);
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handle(req, res, parsed);
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});
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server.on("upgrade", (req, socket, head) => {
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if (isConvexPath(req.url || "/")) {
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proxyConvexUpgrade(req, socket, head);
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return;
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}
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if (isOnlyOfficePath(req.url || "/")) {
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proxyOnlyOfficeUpgrade(req, socket, head);
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return;
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}
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if (handleUpgrade) {
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handleUpgrade(req, socket, head);
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return;
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}
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try {
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socket.destroy();
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} catch {
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// ignore
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}
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});
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server.listen(port, hostname, () => {
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console.log(
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`[prod-server] ready http://${hostname}:${port} (ONLYOFFICE ws via ${ONLYOFFICE_PREFIX} -> ${process.env.ONLYOFFICE_INTERNAL_URL || "http://127.0.0.1:8081"}; Convex ws via ${CONVEX_PREFIX} -> ${process.env.CONVEX_INTERNAL_URL || "http://127.0.0.1:3210"})`,
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);
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});
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}
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main().catch((err) => {
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console.error(err instanceof Error ? err.stack : String(err));
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process.exit(1);
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});
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