Description

This example shows the usage of the stream::Behaviour. As a counter-part to the request_response::Behaviour, the stream::Behaviour allows users to write stream-oriented protocols whilst having minimal interaction with the Swarm.

In this showcase, we implement an echo protocol: All incoming data is echoed back to the dialer, until the stream is closed.

Usage

To run the example, follow these steps:

Start an instance of the example in one terminal:
```
cargo run --bin stream-example
```
Observe printed listen address.
Start another instance in a new terminal, providing the listen address of the first one.
```
cargo run --bin stream-example -- <address>
```
Both terminals should now continuously print messages.

Conclusion

The stream::Behaviour is an "escape-hatch" from the way typical rust-libp2p protocols are written. It is suitable for several scenarios including:

prototyping of new protocols
experimentation with rust-libp2p
integration in async/await-heavy applications