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# Middleware: Various
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This example showcases a bunch of different uses of middleware.
See also the [Middleware guide ](https://actix.rs/docs/middleware ).
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## Usage
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```sh
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cd middleware/various
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cargo run
```
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Look in `src/main.rs` and comment the different middleware in/out to see how they function.
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## Middleware
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### `redirect::CheckLogin`
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A middleware implementing a request guard which sketches a rough approximation of what a login could look like.
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### `read_request_body::Logging`
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A middleware demonstrating how to read out the incoming request body.
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### `read_response_body::Logging`
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A middleware demonstrating how to read out the outgoing response body.
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### `simple::SayHi`
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A minimal middleware demonstrating the sequence of operations in an actix middleware. There is a second version of the same middleware using `wrap_fn` which shows how easily a middleware can be implemented in actix.
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## See Also
- The `from_fn` middleware constructor from [`actix-web-lab` ](https://crates.io/crates/actix-web-lab ).
