90 lines
1.9 KiB
JavaScript
90 lines
1.9 KiB
JavaScript
require("dotenv").config();
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const Koa = require("koa");
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const bodyParser = require("koa-bodyparser");
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const cors = require("koa2-cors");
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const serve = require("koa-static");
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const views = require("koa-views");
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const app = new Koa();
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const net = require("net");
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const router = require("./routes");
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// 配置信息
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let domain = process.env.ALLOWED_DOMAIN || "*";
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let port = process.env.PORT || 6688;
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// 解析请求体
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app.use(bodyParser());
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// 静态文件目录
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app.use(serve(__dirname + "/public"));
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app.use(views(__dirname + "/public"));
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// 跨域
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app.use(
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cors({
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origin: domain,
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})
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);
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app.use(async (ctx, next) => {
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if (domain === "*") {
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await next();
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} else {
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if (ctx.headers.origin === domain || ctx.headers.referer === domain) {
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await next();
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} else {
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ctx.status = 403;
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ctx.body = {
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code: 403,
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message: "请通过正确的域名访问",
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};
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}
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}
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});
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// 使用路由中间件
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app.use(router.routes());
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app.use(router.allowedMethods());
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// 启动应用程序并监听端口
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const startApp = (port) => {
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app.listen(port, () => {
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console.log(`成功在 ${port} 端口上运行`);
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});
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};
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// 检测端口是否被占用
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const checkPort = (port) => {
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return new Promise((resolve, reject) => {
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const server = net
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.createServer()
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.once("error", (err) => {
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if (err.code === "EADDRINUSE") {
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console.log(`端口 ${port} 已被占用, 正在尝试其他端口...`);
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server.close();
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resolve(false);
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} else {
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reject(err);
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}
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})
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.once("listening", () => {
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server.close();
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resolve(true);
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})
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.listen(port);
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});
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};
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// 尝试启动应用程序
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const tryStartApp = async (port) => {
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let isPortAvailable = await checkPort(port);
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while (!isPortAvailable) {
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port++;
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isPortAvailable = await checkPort(port);
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}
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startApp(port);
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};
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tryStartApp(port);
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