Is there a way to redirect silently ?

[qlereboursBS]

Hello,
first, I'd like to say that this is a question, please add the question tag to this issue.

My question is: Is there a way to redirect silently?
What I mean by "redirect silently" is that I don't want the user that is requesting to know that there was a redirection:

• It shouldn't answer with a 3xx code, but with the code returned by the route it's been redirected to
• Any header should show the URL we've been redirected to

If you want to know more, this is for an API versioning use case (the user reaches /api/users and we created an interceptor that redirects to /api/v7/users depending on the api he passed as a header, we'll know which version he's using).

[krzysdz]

You could use a middleware early in the request processing to rewrite the request URL (req.url) and whatever else you need, so that Express routes the request differently.

const express = require("express");

const app = express();

app.use((req, _res, next) => {
	req.url = (new Date()).getTime() % 2 ? "/a" : "/b";
	next();
});

app.get("/a", (_req, res) => { res.send("It's a"); });
app.get("/b", (_req, res) => { res.send("You've requested /b"); });

const server = app.listen(() => {
	console.log(`Listening on http://127.0.0.1:${server.address().port}`);
});

[firmanJS]

You could use a middleware early in the request processing to rewrite the request URL (req.url) and whatever else you need, so that Express routes the request differently.

const express = require("express");

const app = express();

app.use((req, _res, next) => {
	req.url = (new Date()).getTime() % 2 ? "/a" : "/b";
	next();
});

app.get("/a", (_req, res) => { res.send("It's a"); });
app.get("/b", (_req, res) => { res.send("You've requested /b"); });

const server = app.listen(() => {
	console.log(`Listening on http://127.0.0.1:${server.address().port}`);
});

nice it's work i try this

[rodion-arr]

Hi @qlereboursBS, is comment above answers your question?

[qlereboursBS]

Thank you very much for your answer and sorry for the delay.

It's working as expected! I didn't speak about that but in reality, I'm working on a NestJS project that uses express under the hood. Now that I know how to do this with express, I'll be able to do this in Nest 👍
I'm closing the issue, thanks!