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// Copyright 2018 Parity Technologies (UK) Ltd.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//! Ping example
//!
//! See ../src/tutorial.rs for a step-by-step guide building the example below.
//!
//! In the first terminal window, run:
//!
//! ```sh
//! cargo run --example ping --features=full
//! ```
//!
//! It will print the PeerId and the listening addresses, e.g. `Listening on
//! "/ip4/0.0.0.0/tcp/24915"`
//!
//! In the second terminal window, start a new instance of the example with:
//!
//! ```sh
//! cargo run --example ping --features=full -- /ip4/127.0.0.1/tcp/24915
//! ```
//!
//! The two nodes establish a connection, negotiate the ping protocol
//! and begin pinging each other.
// use libp2p::futures::StreamExt;
// use libp2p::ping::Success;
// use libp2p::swarm::{keep_alive, NetworkBehaviour, SwarmEvent};
// use libp2p::{identity, ping, Multiaddr, PeerId};
// use log::{debug, info, LevelFilter};
use Error;
// use std::time::Duration;
//
// #[path = "../libp2p_shared/lib.rs"]
// mod rust_libp2p_nym;
async
//
// /// Our network behaviour.
// ///
// /// For illustrative purposes, this includes the [`KeepAlive`](behaviour::KeepAlive) behaviour so a continuous sequence of
// /// pings can be observed.
// #[derive(NetworkBehaviour, Default)]
// struct Behaviour {
// keep_alive: keep_alive::Behaviour,
// ping: ping::Behaviour,
// }