| ## Description | |
| This example consists of a client and a server, which demonstrate the usage of the AutoNAT and identify protocols in **libp2p**. | |
| ## Usage | |
| ### Client | |
| The client-side part of the example showcases the combination of the AutoNAT and identify protocols. | |
| The identify protocol allows the local peer to determine its external addresses, which are then included in AutoNAT dial-back requests sent to the server. | |
| To run the client example, follow these steps: | |
| 1. Start the server by following the instructions provided in the `examples/server` directory. | |
| 2. Open a new terminal. | |
| 3. Run the following command in the terminal: | |
| ```sh | |
| cargo run --bin autonat_client -- --server-address <server-addr> --server-peer-id <server-peer-id> --listen-port <port> | |
| ``` | |
| Note: The `--listen-port` parameter is optional and allows you to specify a fixed port at which the local client should listen. | |
| ### Server | |
| The server-side example demonstrates a basic AutoNAT server that supports the autonat and identify protocols. | |
| To start the server, follow these steps: | |
| 1. Open a terminal. | |
| 2. Run the following command: | |
| ```sh | |
| cargo run --bin autonat_server -- --listen-port <port> | |
| ``` | |
| Note: The `--listen-port` parameter is optional and allows you to set a fixed port at which the local peer should listen. | |
| ## Conclusion | |
| By combining the AutoNAT and identify protocols, the example showcases the establishment of direct connections between peers and the exchange of external address information. | |
| Users can explore the provided client and server code to gain insights into the implementation details and functionality of **libp2p**. | |