Networking bugfixes

util/src/network/connection.rs

@@ -137,8 +137,8 @@ impl Connection {
 	pub fn register_socket<Host: Handler>(&self, reg: Token, event_loop: &mut EventLoop<Host>) -> io::Result<()> {
 		trace!(target: "net", "connection register; token={:?}", reg);
 		event_loop.register(&self.socket, reg, self.interest, PollOpt::edge() | PollOpt::oneshot()).or_else(|e| {
-			error!("Failed to register {:?}, {:?}", reg, e);
-			Err(e)
+			debug!("Failed to register {:?}, {:?}", reg, e);
+			Ok(())
 		})
 	}
 
@@ -146,8 +146,8 @@ impl Connection {
 	pub fn update_socket<Host: Handler>(&self, reg: Token, event_loop: &mut EventLoop<Host>) -> io::Result<()> {
 		trace!(target: "net", "connection reregister; token={:?}", reg);
 		event_loop.reregister( &self.socket, reg, self.interest, PollOpt::edge() | PollOpt::oneshot()).or_else(|e| {
-			error!("Failed to reregister {:?}, {:?}", reg, e);
-			Err(e)
+			debug!("Failed to reregister {:?}, {:?}", reg, e);
+			Ok(())
 		})
 	}
 

util/src/network/host.rs

@@ -28,22 +28,32 @@ const IDEAL_PEERS: u32 = 10;
 const MAINTENANCE_TIMEOUT: u64 = 1000;
 
 #[derive(Debug)]
-struct NetworkConfiguration {
-	listen_address: SocketAddr,
-	public_address: SocketAddr,
-	nat_enabled: bool,
-	discovery_enabled: bool,
-	pin: bool,
+/// Network service configuration
+pub struct NetworkConfiguration {
+	/// IP address to listen for incoming connections
+	pub listen_address: SocketAddr,
+	/// IP address to advertise
+	pub public_address: SocketAddr,
+	/// Enable NAT configuration
+	pub nat_enabled: bool,
+	/// Enable discovery
+	pub discovery_enabled: bool,
+	/// Pin to boot nodes only
+	pub pin: bool,
+	/// List of initial node addresses
+	pub boot_nodes: Vec<String>,
 }
 
 impl NetworkConfiguration {
-	fn new() -> NetworkConfiguration {
+	/// Create a new instance of default settings.
+	pub fn new() -> NetworkConfiguration {
 		NetworkConfiguration {
 			listen_address: SocketAddr::from_str("0.0.0.0:30304").unwrap(),
 			public_address: SocketAddr::from_str("0.0.0.0:30304").unwrap(),
 			nat_enabled: true,
 			discovery_enabled: true,
 			pin: false,
+			boot_nodes: Vec::new(),
 		}
 	}
 }
@@ -246,8 +256,8 @@ pub struct Host<Message> where Message: Send + Sync + Clone {
 }
 
 impl<Message> Host<Message> where Message: Send + Sync + Clone {
-	pub fn new() -> Host<Message> {
-		let config = NetworkConfiguration::new();
+	/// Create a new instance
+	pub fn new(config: NetworkConfiguration) -> Host<Message> {
 		let addr = config.listen_address;
 		// Setup the server socket
 		let tcp_listener = TcpListener::bind(&addr).unwrap();
@@ -279,13 +289,19 @@ impl<Message> Host<Message> where Message: Send + Sync + Clone {
 		None => warn!("No public network interface"),
 		*/
 
-		// self.add_node("enode://a9a921de2ff09a9a4d38b623c67b2d6b477a8e654ae95d874750cbbcb31b33296496a7b4421934e2629269e180823e52c15c2b19fc59592ec51ffe4f2de76ed7@127.0.0.1:30303");
-		// GO bootnodes
-		host.add_node("enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303"); // IE
-		host.add_node("enode://de471bccee3d042261d52e9bff31458daecc406142b401d4cd848f677479f73104b9fdeb090af9583d3391b7f10cb2ba9e26865dd5fca4fcdc0fb1e3b723c786@54.94.239.50:30303");  // BR
-		host.add_node("enode://1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082@52.74.57.123:30303");  // SG
+		let boot_nodes = host.info.read().unwrap().config.boot_nodes.clone();
+		if boot_nodes.is_empty() {
+			// GO bootnodes
+			host.add_node("enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303"); // IE
+			host.add_node("enode://de471bccee3d042261d52e9bff31458daecc406142b401d4cd848f677479f73104b9fdeb090af9583d3391b7f10cb2ba9e26865dd5fca4fcdc0fb1e3b723c786@54.94.239.50:30303");  // BR
+			host.add_node("enode://1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082@52.74.57.123:30303");  // SG
+		}
+		else {
+			for n in boot_nodes {
+				host.add_node(&n);
+			}
+		}
 		// ETH/DEV cpp-ethereum (poc-9.ethdev.com)
-		//host.add_node("enode://979b7fa28feeb35a4741660a16076f1943202cb72b6af70d327f053e248bab9ba81760f39d0701ef1d8f89cc1fbd2cacba0710a12cd5314d5e0c9021aa3637f9@5.1.83.226:30303");
 		host
 	}
 
@@ -517,7 +533,8 @@ impl<Message> Host<Message> where Message: Send + Sync + Clone {
 	}
 
 	fn start_session(&self, token: StreamToken, io: &IoContext<NetworkIoMessage<Message>>) {
-		self.connections.write().unwrap().replace_with(token, |c| {
+		let mut connections = self.connections.write().unwrap();
+		connections.replace_with(token, |c| {
 			match Arc::try_unwrap(c).ok().unwrap().into_inner().unwrap() {
 				ConnectionEntry::Handshake(h) => {
 					let session = Session::new(h, io, &self.info.read().unwrap()).expect("Session creation error");

util/src/network/mod.rs

@@ -40,7 +40,7 @@
 /// }
 ///
 /// fn main () {
-/// 	let mut service = NetworkService::<MyMessage>::start().expect("Error creating network service");
+/// 	let mut service = NetworkService::<MyMessage>::start(NetworkConfiguration::new()).expect("Error creating network service");
 /// 	service.register_protocol(Arc::new(MyHandler), "myproto", &[1u8]);
 ///
 /// 	// Wait for quit condition
@@ -71,6 +71,7 @@ pub use network::host::NetworkIoMessage;
 pub use network::host::NetworkIoMessage::User as UserMessage;
 /// TODO [arkpar] Please document me
 pub use network::error::NetworkError;
+pub use network::host::NetworkConfiguration;
 
 use io::TimerToken;
 
@@ -130,6 +131,6 @@ fn test_net_service() {
 		}
 	}
 
-	let mut service = NetworkService::<MyMessage>::start().expect("Error creating network service");
+	let mut service = NetworkService::<MyMessage>::start(NetworkConfiguration::new()).expect("Error creating network service");
 	service.register_protocol(Arc::new(MyHandler), "myproto", &[1u8]).unwrap();
 }

util/src/network/service.rs

@@ -1,6 +1,6 @@
 use std::sync::*;
 use error::*;
-use network::{NetworkProtocolHandler};
+use network::{NetworkProtocolHandler, NetworkConfiguration};
 use network::error::{NetworkError};
 use network::host::{Host, NetworkIoMessage, ProtocolId};
 use io::*;
@@ -14,9 +14,9 @@ pub struct NetworkService<Message> where Message: Send + Sync + Clone + 'static
 
 impl<Message> NetworkService<Message> where Message: Send + Sync + Clone + 'static {
 	/// Starts IO event loop
-	pub fn start() -> Result<NetworkService<Message>, UtilError> {
+	pub fn start(config: NetworkConfiguration) -> Result<NetworkService<Message>, UtilError> {
 		let mut io_service = try!(IoService::<NetworkIoMessage<Message>>::start());
-		let host = Arc::new(Host::new());
+		let host = Arc::new(Host::new(config));
 		let host_info = host.client_version();
 		info!("NetworkService::start(): id={:?}", host.client_id());
 		try!(io_service.register_handler(host));