first commit

index.js

@@ -0,0 +1,53 @@
+const express = require('express')
+const fs = require('fs')
+
+const app = express()
+//const cors = require("cors");
+
+const videoFileMap={
+    'cdn':'videos/v1.mp4',
+    'generate-pass':'videos/v2.mp4',
+    'get-post':'videos/v3.mp4',
+}
+
+
+app.get('/videos/:filename',(req, res)=>{
+    const fileName = req.params.filename;
+    const filePath = videoFileMap[fileName]
+    if(!filePath){
+        return res.status(404).send('File not found')
+    }
+
+    const stat = fs.statSync(filePath);
+    const fileSize = stat.size;
+    const range = req.headers.range;
+
+    if(range){
+        const parts = range.replace(/bytes=/, '').split('-')
+        const start = parseInt(parts[0], 10);
+        const end = parts[1] ? parseInt(parts[1], 10) : fileSize - 1;
+
+        const chunksize = end - start + 1;
+        const file = fs.createReadStream(filePath, {start, end});
+        const head = {
+            'Content-Range': `bytes ${start}-${end}/${fileSize}`,
+            'Accept-Ranges': 'bytes',
+            'Content-Length': chunksize,
+            'Content-Type': 'video/mp4'
+        };
+        res.writeHead(206, head);
+        file.pipe(res);
+    }
+    else{
+        const head = {
+            'Content-Length': fileSize,
+            'Content-Type': 'video/mp4'
+        };
+        res.writeHead(200, head);
+        fs.createReadStream(filePath).pipe(res)
+    }
+})
+
+app.listen(3036, ()=>{
+    console.log('server is listening on post 3036')
+})