diff --git a/src/network/mod.rs b/src/network/mod.rs
index 839624b01..df0da2c13 100644
--- a/src/network/mod.rs
+++ b/src/network/mod.rs
@@ -1,3 +1,48 @@
+/// Network and general IO module.
+///
+/// Example usage for craeting a network service and adding an IO handler:
+///
+/// ```rust
+/// extern crate ethcore_util as util;
+/// use util::network::*;
+///
+/// struct MyHandler;
+///
+/// impl ProtocolHandler for MyHandler {
+///		fn initialize(&mut self, io: &mut HandlerIo) {
+///			io.register_timer(1000);
+///		}
+///
+///		fn read(&mut self, io: &mut HandlerIo, peer: &PeerId, packet_id: u8, data: &[u8]) {
+///			println!("Received {} ({} bytes) from {}", packet_id, data.len(), peer);
+///		}
+///
+///		fn connected(&mut self, io: &mut HandlerIo, peer: &PeerId) {
+///			println!("Connected {}", peer);
+///		}
+///
+///		fn disconnected(&mut self, io: &mut HandlerIo, peer: &PeerId) {
+///			println!("Disconnected {}", peer);
+///		}
+///
+///		fn timeout(&mut self, io: &mut HandlerIo, timer: TimerToken) {
+///			println!("Timeout {}", timer);
+///		}
+///
+///		fn message(&mut self, io: &mut HandlerIo, message: &Message) {
+///			println!("Message {}:{}", message.protocol, message.id);
+///		}
+/// }
+///
+/// fn main () {
+/// 	let mut service = NetworkService::start().expect("Error creating network service");
+/// 	service.register_protocol(Box::new(MyHandler), "myproto", &[1u8]);
+///
+/// 	// Wait for quit condition
+/// 	// ...
+/// 	// Drop the service
+/// }
+/// ```
 extern crate mio;
 mod host;
 mod connection;
@@ -90,7 +135,7 @@ pub trait ProtocolHandler: Send {
 	/// Called when a previously connected peer disconnects.
 	fn disconnected(&mut self, io: &mut HandlerIo, peer: &PeerId);
 	/// Timer function called after a timeout created with `HandlerIo::timeout`.
-	fn timeout(&mut self, io: &mut HandlerIo, timer: TimerToken) -> bool;
+	fn timeout(&mut self, io: &mut HandlerIo, timer: TimerToken);
 	/// Called when a broadcasted message is received. The message can only be sent from a different protocol handler.
 	fn message(&mut self, io: &mut HandlerIo, message: &Message);
 }