It doesn't work

[AllanOricil]

Current Behavior

Bellow is a simple proxy server that receives requests from AWS SDK V3 Clients and an example using aws-sdk-v3-proxy configured to work with the proxy server.

// example.ts

import { S3Client, ListBucketsCommand } from "@aws-sdk/client-s3";
import { addProxyToClient } from 'aws-sdk-v3-proxy';

console.log(`HTTP_PROXY: ${process.env.HTTP_PROXY}`);
console.log(`HTTPS_PROXY: ${process.env.HTTPS_PROXY}`);

const s3 = addProxyToClient(new S3Client({
  region: "us-east-2",
}));

s3.middlewareStack.add(
  (next, context) => async (args: any) => {
    args.request.headers["x-my-account-id"] =
      "9b8c209d-73c9-4d97-9923-e256de630f39";
    console.log(args);
    const result = await next(args);
    // result.response contains data returned from next middleware.
    return result;
  },
  {
    step: "build",
  }
);

(async function main() {
  try {
    const response = await s3.send(new ListBucketsCommand());
    console.log(response);
  } catch (err) {
    console.log(err);
  }
})();

//proxy.ts

import express, { Request, Response } from 'express';

const app = express();
const port = 3000;

app.use(express.json());

app.all('*', async (req: Request, res: Response) => {
    try {
        console.log(req);
        const accountId = req.headers["x-my-account-id"];
        console.log(accountId);
        res.status(200).json({ message: "works" });
    } catch (error) {
        console.error("unknown error");
        res.status(500).json({ error: "unknown error" });
    }
});

app.listen(port, () => {
    console.log(`Proxy server listening at http://localhost:${port}`);
});

Expected Behavior

• proxy server should receive requests

Steps to Reproduce the Problem

1. start the proxy at http://localhost:3000
2. export HTTP_PROXY=http://localhost:3000
3. export HTTPS_PROXY=http://localhost:3000
4. run the example code
5. verify that you get this error message.

6. stop the proxy
7. export HTTPS_PROXY=https://localhost:300
8. start the proxy at http://localhost:3000
9. verify you ge the following error message

I believe that the sdk client is trying to send the request through the proxy but the proxy isn't accepting and there is no clue why! I also tried with fastify and had no lucky. I need help

Environment

• Version: "aws-sdk-v3-proxy": "^2.1.4",

{
  "name": "aws-sdk-proxy-example",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "ts-node index.ts",
    "proxy": "ts-node proxy.ts"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@aws-crypto/sha256-browser": "^5.2.0",
    "@aws-sdk/client-s3": "^3.600.0",
    "@aws-sdk/client-sts": "^3.600.0",
    "@aws-sdk/middleware-stack": "^3.374.0",
    "@aws-sdk/node-http-handler": "^3.374.0",
    "@aws-sdk/protocol-http": "^3.374.0",
    "@aws-sdk/signature-v4": "^3.374.0",
    "aws-sdk-v3-proxy": "^2.1.4",
    "axios": "^1.7.2",
    "express": "^4.19.2",
    "hpagent": "^1.2.0",
    "https-proxy-agent": "^7.0.4",
    "proxy-agent": "^6.4.0"
  },
  "devDependencies": {
    "@types/express": "^4.17.21",
    "@types/node": "^20.14.6",
    "nodemon": "^3.1.3",
    "ts-node": "^10.9.2",
    "typescript": "^5.4.5"
  }
}

• Platform: mac
• Node.js Version: 18.19.1

[AllanOricil]

I also console.log req.originalUrl and req.haders and discovered they were changed. Why? I just want to forward the request. My plan is to add some credentials to it before forwarding the request to AWS.

//proxy.ts

import express, { Request, Response } from 'express';

const app = express();
const port = 3000;

app.use(express.json());

app.all('*', async (req: Request, res: Response) => {
    try {
        console.log('Original URL:', req.originalUrl);
        console.log('Headers:', req.headers);
        res.status(200).json({});
    } catch (error) {
        console.error("unknown error");
        res.status(500).json({ error: "unknown error" });
    }
});

app.listen(port, () => {
    console.log(`Proxy server listening at http://localhost:${port}`);
});