add server side streaming api route example

src/app/api/stream/[filename]/route.ts

@@ -0,0 +1,35 @@
+import axios from "axios";
+
+type GetParams = {
+  params: {
+    filename: string;
+  };
+};
+
+// export an async GET function. This is a convention in NextJS
+export async function GET(req: Request, { params }: GetParams) {
+  // filename for the file that the user is trying to download
+  const filename = params.filename;
+
+  // external file URL
+  const DUMMY_URL =
+    "https://ev.phncdn.com/videos/202404/23/451452671/1080P_4000K_451452671.mp4?validfrom=1715716033&validto=1715723233&rate=50000k&burst=50000k&ip=104.28.241.69&ipa=104.28.241.69&hash=DY4%2Fxb3xItQX4zcl3F%2F3gW8WlYU%3D";
+  
+    // use fetch to get a response
+  const response = await axios.get<ReadableStream>(DUMMY_URL, {
+    responseType: "stream",
+  });
+
+  // apre lo stream nel browser
+  return new Response(response.data);
+
+  // return a new response but use 'content-disposition' to suggest saving the file to the user's computer
+
+    
+  // return new Response(response.data, {
+  //   headers: {
+  //     "content-disposition": `attachment; filename="${filename}"`,
+  //   },
+  // });
+}
+