openethereum/src/network/service.rs

45 lines
1.5 KiB
Rust

use error::*;
use network::{NetworkProtocolHandler};
use network::error::{NetworkError};
use network::host::{Host, NetworkIoMessage, PeerId, PacketId, ProtocolId};
use io::*;
/// IO Service with networking
/// `Message` defines a notification data type.
pub struct NetworkService<Message> where Message: Send + 'static {
io_service: IoService<NetworkIoMessage<Message>>,
}
impl<Message> NetworkService<Message> where Message: Send + 'static {
/// Starts IO event loop
pub fn start() -> Result<NetworkService<Message>, UtilError> {
let mut io_service = try!(IoService::<NetworkIoMessage<Message>>::start());
try!(io_service.register_handler(Box::new(Host::new())));
Ok(NetworkService {
io_service: io_service
})
}
/// Send a message over the network. Normaly `HostIo::send` should be used. This can be used from non-io threads.
pub fn send(&mut self, peer: &PeerId, packet_id: PacketId, protocol: ProtocolId, data: &[u8]) -> Result<(), NetworkError> {
try!(self.io_service.send_message(NetworkIoMessage::Send {
peer: *peer,
packet_id: packet_id,
protocol: protocol,
data: data.to_vec()
}));
Ok(())
}
/// Regiter a new protocol handler with the event loop.
pub fn register_protocol(&mut self, handler: Box<NetworkProtocolHandler<Message>+Send>, protocol: ProtocolId, versions: &[u8]) -> Result<(), NetworkError> {
try!(self.io_service.send_message(NetworkIoMessage::AddHandler {
handler: Some(handler),
protocol: protocol,
versions: versions.to_vec(),
}));
Ok(())
}
}