feat: init commit

proxy.js

@@ -0,0 +1,62 @@
+import express from 'express';
+import fetch from 'node-fetch';
+import { URL } from 'url';
+
+const app = express();
+const port = 3000;
+
+// 允许跨域请求
+app.use((req, res, next) => {
+  res.header('Access-Control-Allow-Origin', '*');
+  next();
+});
+
+// 通用代理路由
+app.get('/proxy', async (req, res) => {
+  console.log('Received Range header:', req.headers.range);
+  // 获取目标 URL
+  const targetUrl = req.query.url;
+  console.log('Fetching data from:', targetUrl);
+  if (!targetUrl) {
+    return res.status(400).send('URL parameter is required');
+  }
+
+  try {
+    // 设置请求头
+    const headers = {};
+    if (req.headers.range) {
+      headers['Range'] = req.headers.range; // 转发 Range 请求头
+    }
+
+    // 向目标 URL 发起请求
+    const response = await fetch(targetUrl, { headers });
+
+    // 设置响应头
+    response.headers.forEach((value, key) => {
+      if (key !== 'content-encoding') { // 避免某些头信息导致问题
+        res.setHeader(key, value);
+      }
+    });
+
+    // 特殊处理 Transfer-Encoding 和 Content-Length
+    if (response.headers.get('transfer-encoding') === 'chunked') {
+      res.removeHeader('Content-Length');
+    }
+
+    // 将响应体直接流式传输给客户端
+    response.body.pipe(res, { end: true });
+
+    // 错误处理
+    response.body.on('error', (err) => {
+      console.error('Error during data transfer:', err);
+      res.status(500).send('Error during data transfer');
+    });
+  } catch (error) {
+    console.error('Error fetching data:', error);
+    res.status(500).send('Error fetching data');
+  }
+});
+
+app.listen(port, () => {
+  console.log(`Proxy server running at http://localhost:${port}`);
+});