Fix netapp protocol & adapt basalt to new api

Cargo.lock

@@ -28,6 +28,12 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6df5aef5c5830360ce5218cecb8f018af3438af5686ae945094affc86fdec63"
 
+[[package]]
+name = "arrayvec"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
+
 [[package]]
 name = "async-trait"
 version = "0.1.51"
@@ -302,12 +308,28 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
+[[package]]
+name = "hexdump"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e40283dadb02f3af778878be1d717b17b4e4ab92e1d935ab03a730b0542905f2"
+dependencies = [
+ "arrayvec",
+ "itertools",
+]
+
 [[package]]
 name = "humantime"
 version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
+[[package]]
+name = "itertools"
+version = "0.4.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4a9b56eb56058f43dc66e58f40a214b2ccbc9f3df51861b63d51dec7b65bc3f"
+
 [[package]]
 name = "kuska-handshake"
 version = "0.2.0"
@@ -414,6 +436,7 @@ dependencies = [
  "err-derive",
  "futures",
  "hex",
+ "hexdump",
  "kuska-handshake",
  "kuska-sodiumoxide",
  "log",

Cargo.toml

@@ -27,6 +27,7 @@ serde = { version = "1.0", default-features = false, features = ["derive"] }
 rmp-serde = "0.14.3"
 hex = "0.4.2"
 base64 = "0.12.1"
+hexdump = "0.1.1"
 
 rand = { version = "0.5.5", optional = true }
 

Makefile

@@ -1,5 +1,7 @@
 all:
-	cargo build
+	cargo build --all-features
 	cargo build --example fullmesh
-	RUST_LOG=netapp=debug cargo run --example fullmesh -- -n 3242ce79e05e8b6a0e43441fbd140a906e13f335f298ae3a52f29784abbab500 -p 6c304114a0e1018bbe60502a34d33f4f439f370856c3333dda2726da01eb93a4894b7ef7249a71f11d342b69702f1beb7c93ec95fbcf122ad1eca583bb0629e7
+	cargo build --all-features --example basalt
+	RUST_LOG=netapp=debug,fullmesh=debug cargo run --example fullmesh -- -n 3242ce79e05e8b6a0e43441fbd140a906e13f335f298ae3a52f29784abbab500 -p 6c304114a0e1018bbe60502a34d33f4f439f370856c3333dda2726da01eb93a4894b7ef7249a71f11d342b69702f1beb7c93ec95fbcf122ad1eca583bb0629e7
+	#RUST_LOG=netapp=debug,fullmesh=debug cargo run --example fullmesh
 

examples/basalt.rs

@@ -7,14 +7,15 @@ use log::{debug, info, warn};
 
 use serde::{Deserialize, Serialize};
 use structopt::StructOpt;
+use async_trait::async_trait;
 
 use sodiumoxide::crypto::auth;
 use sodiumoxide::crypto::sign::ed25519;
 
-use netapp::message::*;
+use netapp::endpoint::*;
 use netapp::peering::basalt::*;
 use netapp::proto::*;
-use netapp::NetApp;
+use netapp::{NetApp, NodeID};
 
 #[derive(StructOpt, Debug)]
 #[structopt(name = "netapp")]
@@ -50,6 +51,12 @@ pub struct Opt {
 	reset_count: usize,
 }
 
+struct Example {
+	netapp: Arc<NetApp>,
+	basalt: Arc<Basalt>,
+	example_endpoint: Arc<Endpoint<ExampleMessage, Self>>,
+}
+
 #[tokio::main]
 async fn main() {
 	env_logger::Builder::new()
@@ -104,46 +111,54 @@ async fn main() {
 		reset_interval: Duration::from_secs(opt.reset_interval),
 		reset_count: opt.reset_count,
 	};
-	let peering = Basalt::new(netapp.clone(), bootstrap_peers, basalt_params);
+	let basalt = Basalt::new(netapp.clone(), bootstrap_peers, basalt_params);
 
-	netapp.add_msg_handler::<ExampleMessage, _, _>(
-		|_from: ed25519::PublicKey, msg: ExampleMessage| {
-			debug!("Got example message: {:?}, sending example response", msg);
-			async {
-				ExampleResponse {
-					example_field: false,
-				}
-			}
-		},
-	);
+	let example = Arc::new(Example {
+		netapp: netapp.clone(),
+		basalt,
+		example_endpoint: netapp.endpoint("__netapp/examples/basalt.rs/Example".into()),
+	});
+	example.example_endpoint.set_handler(example.clone());
 
 	let listen_addr = opt.listen_addr.parse().unwrap();
 	let public_addr = opt.public_addr.map(|x| x.parse().unwrap());
 	tokio::join!(
-		sampling_loop(netapp.clone(), peering.clone()),
-		netapp.listen(listen_addr, public_addr),
-		peering.run(),
+		example.clone().sampling_loop(),
+		example.netapp.clone().listen(listen_addr, public_addr),
+		example.basalt.clone().run(),
 	);
 }
 
-async fn sampling_loop(netapp: Arc<NetApp>, basalt: Arc<Basalt>) {
-	loop {
-		tokio::time::sleep(Duration::from_secs(10)).await;
+impl Example {
+	async fn sampling_loop(self: Arc<Self>) {
+		loop {
+			tokio::time::sleep(Duration::from_secs(10)).await;
 
-		let peers = basalt.sample(10);
-		for p in peers {
-			debug!("kyev S {}", hex::encode(p));
+			let peers = self.basalt.sample(10);
+			for p in peers {
+				debug!("kyev S {}", hex::encode(p));
 
-			let netapp2 = netapp.clone();
-			tokio::spawn(async move {
-				match netapp2
-					.request(&p, ExampleMessage { example_field: 42 }, PRIO_NORMAL)
-					.await
-				{
-					Ok(resp) => debug!("Got example response: {:?}", resp),
-					Err(e) => warn!("Error with example request: {}", e),
-				}
-			});
+				let self2 = self.clone();
+				tokio::spawn(async move {
+					match self2
+						.example_endpoint.call(&p, ExampleMessage { example_field: 42 }, PRIO_NORMAL)
+						.await
+					{
+						Ok(resp) => debug!("Got example response: {:?}", resp),
+						Err(e) => warn!("Error with example request: {}", e),
+					}
+				});
+			}
+		}
+	}
+}
+
+#[async_trait]
+impl EndpointHandler<ExampleMessage> for Example {
+	async fn handle(self: &Arc<Self>, msg: ExampleMessage, _from: NodeID) -> ExampleResponse {
+		debug!("Got example message: {:?}, sending example response", msg);
+		ExampleResponse {
+			example_field: false,
 		}
 	}
 }
@@ -159,6 +174,5 @@ struct ExampleResponse {
 }
 
 impl Message for ExampleMessage {
-	const KIND: MessageKind = 0x99000001;
 	type Response = ExampleResponse;
 }

examples/fullmesh.rs

@@ -66,7 +66,7 @@ async fn main() {
 	info!("Node private key: {}", hex::encode(&privkey));
 	info!("Node public key: {}", hex::encode(&privkey.public_key()));
 
-	let netapp = NetApp::new(netid, privkey);
+	let netapp = NetApp::new(netid.clone(), privkey.clone());
 
 	let mut bootstrap_peers = vec![];
 	for peer in opt.bootstrap_peers.iter() {
@@ -81,6 +81,12 @@ async fn main() {
 	let peering = FullMeshPeeringStrategy::new(netapp.clone(), bootstrap_peers);
 
 	let listen_addr = opt.listen_addr.parse().unwrap();
+
+	info!("Add more peers to this mesh by running: fullmesh -n {} -l 127.0.0.1:$((1000 + $RANDOM)) -b {}@{}",
+		hex::encode(&netid),
+		hex::encode(&privkey.public_key()),
+		listen_addr);
+
 	let public_addr = opt.public_addr.map(|x| x.parse().unwrap());
 	tokio::join!(netapp.listen(listen_addr, public_addr), peering.run(),);
 }

src/client.rs

@@ -145,12 +145,13 @@ impl ClientConn {
 			return Err(Error::Message("Response is 0 bytes, either a collision or a protocol error".into()));
 		}
 
+		trace!("request response {}: ", id);
+
 		let code = resp[0];
 		if code == 0 {
-			rmp_serde::decode::from_read_ref::<_, Result<<T as Message>::Response, String>>(
+			Ok(rmp_serde::decode::from_read_ref::<_, <T as Message>::Response>(
 				&resp[1..],
-			)?
-			.map_err(Error::Remote)
+			)?)
 		} else {
 			Err(Error::Remote(format!("Remote error code {}", code)))
 		}

src/endpoint.rs

@@ -123,3 +123,4 @@ where
 		Box::new(Self(self.0.clone()))
 	}
 }
+

src/netapp.rs

@@ -2,7 +2,7 @@ use std::collections::HashMap;
 use std::net::{IpAddr, SocketAddr};
 use std::sync::{Arc, RwLock};
 
-use log::{debug, info};
+use log::{debug, info, error};
 
 use arc_swap::ArcSwapOption;
 use async_trait::async_trait;
@@ -34,10 +34,6 @@ type OnDisconnectHandler = Box<dyn Fn(NodeID, bool) + Send + Sync>;
 
 /// NetApp is the main class that handles incoming and outgoing connections.
 ///
-/// The `request()` method can be used to send a message to any peer to which we have
-/// an outgoing connection, or to ourself. On the server side, these messages are
-/// processed by the handlers that have been defined using `add_msg_handler()`.
-///
 /// NetApp can be used in a stand-alone fashion or together with a peering strategy.
 /// If using it alone, you will want to set `on_connect` and `on_disconnect` events
 /// in order to manage information about the current peer list.
@@ -151,7 +147,9 @@ impl NetApp {
 			listen_addr,
 			public_addr,
 		};
-		self.listen_params.store(Some(Arc::new(listen_params)));
+		if self.listen_params.swap(Some(Arc::new(listen_params))).is_some() {
+			error!("Trying to listen on NetApp but we're already listening!");
+		}
 
 		let listener = TcpListener::bind(listen_addr).await.unwrap();
 		info!("Listening on {}", listen_addr);

src/peering/basalt.rs

@@ -7,10 +7,11 @@ use log::{debug, info, trace, warn};
 use lru::LruCache;
 use rand::{thread_rng, Rng};
 use serde::{Deserialize, Serialize};
+use async_trait::async_trait;
 
 use sodiumoxide::crypto::hash;
 
-use crate::message::*;
+use crate::endpoint::*;
 use crate::netapp::*;
 use crate::proto::*;
 use crate::NodeID;
@@ -21,7 +22,6 @@ use crate::NodeID;
 struct PullMessage {}
 
 impl Message for PullMessage {
-	const KIND: MessageKind = 0x42001100;
 	type Response = PushMessage;
 }
 
@@ -31,7 +31,6 @@ struct PushMessage {
 }
 
 impl Message for PushMessage {
-	const KIND: MessageKind = 0x42001101;
 	type Response = ();
 }
 
@@ -236,6 +235,8 @@ pub struct BasaltParams {
 
 pub struct Basalt {
 	netapp: Arc<NetApp>,
+	pull_endpoint: Arc<Endpoint<PullMessage, Self>>,
+	push_endpoint: Arc<Endpoint<PushMessage, Self>>,
 
 	param: BasaltParams,
 	bootstrap_peers: Vec<Peer>,
@@ -264,6 +265,8 @@ impl Basalt {
 
 		let basalt = Arc::new(Self {
 			netapp: netapp.clone(),
+			pull_endpoint: netapp.endpoint("__netapp/peering/basalt.rs/Pull".into()),
+			push_endpoint: netapp.endpoint("__netapp/peering/basalt.rs/Push".into()),
 			param,
 			bootstrap_peers,
 			view: RwLock::new(view),
@@ -271,6 +274,9 @@ impl Basalt {
 			backlog: RwLock::new(backlog),
 		});
 
+		basalt.pull_endpoint.set_handler(basalt.clone());
+		basalt.push_endpoint.set_handler(basalt.clone());
+
 		let basalt2 = basalt.clone();
 		netapp.on_connected(move |id: NodeID, addr: SocketAddr, is_incoming: bool| {
 			basalt2.on_connected(id, addr, is_incoming);
@@ -281,18 +287,6 @@ impl Basalt {
 			basalt2.on_disconnected(id, is_incoming);
 		});
 
-		let basalt2 = basalt.clone();
-		netapp.add_msg_handler::<PullMessage, _, _>(move |_from: NodeID, _pullmsg: PullMessage| {
-			let push_msg = basalt2.make_push_message();
-			async move { push_msg }
-		});
-
-		let basalt2 = basalt.clone();
-		netapp.add_msg_handler::<PushMessage, _, _>(move |_from: NodeID, push_msg: PushMessage| {
-			basalt2.handle_peer_list(&push_msg.peers[..]);
-			async move {}
-		});
-
 		basalt
 	}
 
@@ -333,8 +327,8 @@ impl Basalt {
 
 	async fn do_pull(self: Arc<Self>, peer: NodeID) {
 		match self
-			.netapp
-			.request(&peer, PullMessage {}, PRIO_NORMAL)
+			.pull_endpoint
+			.call(&peer, PullMessage {}, PRIO_NORMAL)
 			.await
 		{
 			Ok(resp) => {
@@ -349,7 +343,7 @@ impl Basalt {
 
 	async fn do_push(self: Arc<Self>, peer: NodeID) {
 		let push_msg = self.make_push_message();
-		match self.netapp.request(&peer, push_msg, PRIO_NORMAL).await {
+		match self.push_endpoint.call(&peer, push_msg, PRIO_NORMAL).await {
 			Ok(_) => {
 				trace!("KYEV PEXo {}", hex::encode(peer));
 			}
@@ -469,6 +463,20 @@ impl Basalt {
 	}
 }
 
+#[async_trait]
+impl EndpointHandler<PullMessage> for Basalt {
+	async fn handle(self: &Arc<Self>, _pullmsg: PullMessage, _from: NodeID) -> PushMessage {
+		self.make_push_message()
+	}
+}
+
+#[async_trait]
+impl EndpointHandler<PushMessage> for Basalt {
+	async fn handle(self: &Arc<Self>, pushmsg: PushMessage, _from: NodeID) {
+		self.handle_peer_list(&pushmsg.peers[..]);
+	}
+}
+
 fn rand_seed() -> Seed {
 	let mut seed = [0u8; 32];
 	sodiumoxide::randombytes::randombytes_into(&mut seed[..]);

src/server.rs

@@ -150,8 +150,12 @@ impl RecvLoop for ServerConn {
 		trace!("ServerConn recv_handler {} ({} bytes)", id, bytes.len());
 		let bytes: Bytes = bytes.into();
 
+		let prio = if !bytes.is_empty() {
+			bytes[0]
+		} else {
+			0u8
+		};
 		let resp = self.recv_handler_aux(&bytes[..]).await;
-		let prio = bytes[0];
 
 		let mut resp_bytes = vec![];
 		match resp {
@@ -164,8 +168,11 @@ impl RecvLoop for ServerConn {
 			}
 		}
 
+		trace!("ServerConn sending response to {}: ", id);
+
 		self.resp_send
 			.send(Some((id, prio, resp_bytes)))
 			.log_err("ServerConn recv_handler send resp");
 	}
 }
+