chore: add network example (#3753)

examples/Cargo.toml

@@ -6,25 +6,26 @@ edition.workspace = true
 license.workspace = true
 
 [dev-dependencies]
-reth-primitives = { workspace = true }
+reth-primitives.workspace = true
 
-reth-db = { workspace = true }
-reth-provider = { workspace = true }
+reth-db.workspace = true
+reth-provider.workspace = true
 
-reth-rpc-builder = { workspace = true }
-reth-rpc-types = { workspace = true }
+reth-rpc-builder.workspace = true
+reth-rpc-types.workspace = true
 
-reth-revm = { workspace = true }
-reth-blockchain-tree = { workspace = true }
-reth-beacon-consensus = { workspace = true }
-reth-network-api = { workspace = true }
-reth-transaction-pool = { workspace = true }
-reth-tasks = { workspace = true }
+reth-revm.workspace = true
+reth-blockchain-tree.workspace = true
+reth-beacon-consensus.workspace = true
+reth-network-api.workspace = true
+reth-network.workspace = true
+reth-transaction-pool.workspace = true
+reth-tasks.workspace = true
 
 
 eyre = "0.6.8"
-futures = "0.3.0"
-tokio = { workspace = true }
+futures.workspace = true
+tokio.workspace = true
 
 [[example]]
 name = "rpc-db"
@@ -33,3 +34,7 @@ path = "rpc-db.rs"
 [[example]]
 name = "db-access"
 path = "db-access.rs"
+
+[[example]]
+name = "network"
+path = "network.rs"

examples/network.rs

@@ -0,0 +1,41 @@
+//! Example of how to use the network as a standalone component
+//!
+//! Run with
+//!
+//! ```not_rust
+//! cargo run --example network
+//! ```
+
+use futures::StreamExt;
+use reth_network::{config::rng_secret_key, NetworkConfig, NetworkManager};
+use reth_provider::test_utils::NoopProvider;
+
+#[tokio::main]
+async fn main() -> eyre::Result<()> {
+    // This block provider implementation is used for testing purposes.
+    let client = NoopProvider::default();
+
+    // The key that's used for encrypting sessions and to identify our node.
+    let local_key = rng_secret_key();
+
+    // Configure the network
+    let config =
+        NetworkConfig::<NoopProvider>::builder(local_key).mainnet_boot_nodes().build(client);
+
+    // create the network instance
+    let network = NetworkManager::new(config).await?;
+
+    // get a handle to the network to interact with it
+    let handle = network.handle().clone();
+
+    // spawn the network
+    tokio::task::spawn(network);
+
+    // interact with the network
+    let mut events = handle.event_listener();
+    while let Some(event) = events.next().await {
+        println!("Received event: {:?}", event);
+    }
+
+    Ok(())
+}