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examples/middleware/middleware-ext-mut/README.md

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# Middleware: Add/Retrieve Request-Local Data
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This example showcases a middleware that adds and retrieves request-local data. See also the [middleware guide](https://actix.rs/docs/middleware/).
## Usage
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```sh
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cd middleware/middleware-ext-mut
cargo run
```
Look in `src/add_msg.rs` to see how it works.
## Routes
- [GET /on](http://localhost:8080/on) - `200 OK` with "hello from middleware" body and console log showing the request passed through the middleware
- [GET /off](http://localhost:8080/off) - `500 Internal Server Error` with "no message found" body and console log showing the request passed through the middleware