x.com xurl auth update

x.com xurl auth update

## X OAuth Local Development Lesson (Important)

I was stuck on this for a long time, so documenting it clearly:

### 1️⃣ You must use `localhost` exactly

The default redirect URI:

```
http://localhost:8080/callback
```

OAuth requires **exact string matching** for `redirect_uri`.

Even small differences will break it:

* ❌ 127.0.0.1 instead of localhost
* ❌ http vs https
* ❌ Missing or extra trailing slash
* ❌ Different port

If it doesn't match exactly what’s configured in X Developer Console, the authorization page will just show:

> “Something went wrong”

(with zero explanation)

---

### 2️⃣ Make sure port 8080 is not already in use

Before testing OAuth locally, check:

```bash
lsof -i :8080
```

If another process is using port 8080, the callback will fail silently.

If it’s occupied:

* Kill the process
* Or change to another port (e.g., 3000)
* And update BOTH:

  * The Developer Console redirect URI
  * The authorize URL redirect_uri parameter

---

### Key Takeaway

When working with X OAuth locally:

* Exact redirect URI match is mandatory
* Always check port availability
* X error messages are extremely generic