[Creating and deploying a tiny proxy server on Vercel in 10 minutes · mmazzarolo.com](https://mmazzarolo.com/blog/2022-02-05-creating-and-deploying-a-proxy-server-in-5-minutes/)

​## 项目设置

```bash mkdir my-proxy && cd my-proxy npm init npm install -D vercel mkdir api && touch api/index.js touch vercel.json ```

`my-proxy/package.json`

```json { "name": "my-proxy", "version": "1.0.0", "scripts": {

• "start": "vercel dev" },

```

> Vercel serverless functions use a [file\-system\-based convention](https://vercel.com/docs/concepts/functions/serverless-functions). So the `api/index.js` file you just created will automatically handle all requests of the `/api` endpoint:

`my-proxy/api/index.js`

```js / In Vercel, any file inside the "api" directory is exposed on an "/api" endpoint. / For an API route to work, you need to export a function as default (a.k.a request handler), / which then receives the following parameters: / - req: The request object. / - res: The response object. / See https://vercel.com/docs/serverless-functions/supported-languages#node.js for details. export default async function handler(req, res) { res.status(200).send(`Hello world!`) } ```

`my-proxy/vercel.json`

```json { "rewrites": [{ "source": "/api/(.*)", "destination": "/api" }] } ```

​## 代理逻辑设置

```bash npm i http-proxy-middleware ```

修改 `my-proxy/api/index.js`

```js / Create a proxy to redirect requests of the "/api/*" path to "https://example.org". / / Examples: / GET api/hello → GET https://example.org/hello / POST api/test?color=red → POST https://example.org/test?color=red / / Additionally, the proxy will: / - Add an "x-added" header / - Remove the "x-removed" header / From the proxied response. / / You can/should update the proxy to suit your needs. / See https://github.com/chimurai/http-proxy-middleware for more details. const { createProxyMiddleware } = require('http-proxy-middleware') const apiProxy = createProxyMiddleware({ target: 'https://example.org', changeOrigin: true, pathRewrite: { '^/api': '', / strip "api" from the URL }, onProxyRes(proxyRes) { proxyRes.headers['x-added'] = 'foobar' / add new header to response delete proxyRes.headers['x-removed'] / remove header from response }, }) / Expose the proxy on the "/api/*" endpoint. export default function (req, res) { return apiProxy(req, res) } ```