use async_trait::async_trait;
use std::{error::Error, time::Duration};
#[macro_use]
extern crate lazy_static;
use futures::{AsyncReadExt, AsyncWriteExt};
use libp2prs_core::identity::Keypair;
use libp2prs_core::transport::upgrade::TransportUpgrade;
use libp2prs_core::upgrade::UpgradeInfo;
use libp2prs_core::{Multiaddr, PeerId, ProtocolId};
use libp2prs_mplex as mplex;
use libp2prs_runtime::task;
use libp2prs_secio as secio;
use libp2prs_swarm::identify::IdentifyConfig;
use libp2prs_swarm::protocol_handler::{IProtocolHandler, Notifiee, ProtocolHandler, ProtocolImpl};
use libp2prs_swarm::substream::Substream;
use libp2prs_swarm::{DummyProtocol, Swarm};
use libp2prs_websocket::WsConfig;
fn main() {
task::block_on(entry())
}
async fn entry() {
env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
if std::env::args().nth(1) == Some("server".to_string()) {
log::info!("Starting server ......");
run_server();
} else {
log::info!("Starting client ......");
run_client();
}
}
lazy_static! {
static ref SERVER_KEY: Keypair = Keypair::generate_ed25519_fixed();
}
const PROTO_NAME: &[u8] = b"/my/1.0.0";
#[allow(clippy::empty_loop)]
fn run_server() {
let keys = SERVER_KEY.clone();
let listen_addr: Multiaddr = "/ip4/127.0.0.1/tcp/30199/ws".parse().unwrap();
let sec = secio::Config::new(keys.clone());
let mux = mplex::Config::new();
let tu = TransportUpgrade::new(WsConfig::new(), mux, sec);
struct MyProtocol;
impl ProtocolImpl for MyProtocol {
fn handler(&self) -> IProtocolHandler {
Box::new(MyProtocolHandler)
}
}
#[derive(Clone)]
struct MyProtocolHandler;
impl UpgradeInfo for MyProtocolHandler {
type Info = ProtocolId;
fn protocol_info(&self) -> Vec<Self::Info> {
vec![PROTO_NAME.into()]
}
}
impl Notifiee for MyProtocolHandler {}
#[async_trait]
impl ProtocolHandler for MyProtocolHandler {
async fn handle(&mut self, stream: Substream, _info: <Self as UpgradeInfo>::Info) -> Result<(), Box<dyn Error>> {
let mut stream = stream;
log::trace!("MyProtocolHandler handling inbound {:?}", stream);
let mut msg = vec![0; 4096];
loop {
let n = stream.read(&mut msg).await?;
log::info!("received: {:?}", &msg[..n]);
stream.write(&msg[..n]).await?;
}
}
fn box_clone(&self) -> IProtocolHandler {
Box::new(self.clone())
}
}
let mut swarm = Swarm::new(keys.public())
.with_transport(Box::new(tu))
.with_protocol(DummyProtocol::new())
.with_protocol(MyProtocol)
.with_identify(IdentifyConfig::new(false));
log::info!("Swarm created, local-peer-id={:?}", swarm.local_peer_id());
let _control = swarm.control();
swarm
.listen_on(vec![listen_addr])
.map_err(|e| {
log::error!("{:?}", e);
})
.expect("listen on error");
swarm.start();
loop {}
}
fn run_client() {
let keys = Keypair::generate_secp256k1();
let addr: Multiaddr = "/ip4/127.0.0.1/tcp/30199/ws".parse().unwrap();
let sec = secio::Config::new(keys.clone());
let mux = mplex::Config::new();
let tu = TransportUpgrade::new(WsConfig::new(), mux, sec);
let swarm = Swarm::new(keys.public())
.with_transport(Box::new(tu))
.with_identify(IdentifyConfig::new(false));
let mut control = swarm.control();
let remote_peer_id = PeerId::from_public_key(SERVER_KEY.public());
log::info!("about to connect to {:?}", remote_peer_id);
swarm.start();
task::block_on(async move {
control.connect_with_addrs(remote_peer_id, vec![addr]).await.unwrap();
let mut stream = control.new_stream(remote_peer_id, vec![PROTO_NAME.into()]).await.unwrap();
log::info!("stream {:?} opened, writing something...", stream);
let msg = b"hello";
let _ = stream.write(msg).await;
let mut buf = [0; 5];
let _ = stream.read(&mut buf).await;
log::info!("receiv msg ======={}", String::from_utf8_lossy(&buf[..]));
assert_eq!(msg, &buf);
task::sleep(Duration::from_secs(1)).await;
let _ = stream.close().await;
log::info!("shutdown is completed");
});
}