@lobehub/chat/src/app/(backend)/webapi/proxy/route.ts

Lobe Chat - an open-source, high-performance chatbot framework that supports speech synthesis, multimodal, and extensible Function Call plugin system. Supports one-click free deployment of your private ChatGPT/LLM web application.

import { NextResponse } from 'next/server';
import { ssrfSafeFetch } from 'ssrf-safe-fetch';

/**
 * just for a proxy
 */
export const POST = async (req: Request) => {
  const url = await req.text();

  try {
    const res = await ssrfSafeFetch(url);
    return new Response(await res.arrayBuffer(), { headers: { ...res.headers } });
  } catch (err) {
    console.error(err); // DNS lookup 127.0.0.1(family:4, host:127.0.0.1.nip.io) is not allowed. Because, It is private IP address.
    return NextResponse.json({ error: 'Not support internal host proxy' }, { status: 400 });
  }
};