61 lines
2.0 KiB
Rust
61 lines
2.0 KiB
Rust
use error::*;
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use network::{NetworkProtocolHandler};
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use network::error::{NetworkError};
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use network::host::{Host, NetworkIoMessage, PeerId, PacketId, ProtocolId};
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use io::*;
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/// IO Service with networking
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/// `Message` defines a notification data type.
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pub struct NetworkService<Message> where Message: Send + 'static {
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io_service: IoService<NetworkIoMessage<Message>>,
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host_info: String,
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}
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impl<Message> NetworkService<Message> where Message: Send + 'static {
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/// Starts IO event loop
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pub fn start(init_nodes: &Vec<String>) -> Result<NetworkService<Message>, UtilError> {
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let mut io_service = try!(IoService::<NetworkIoMessage<Message>>::start());
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let mut host = Box::new(Host::new());
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for n in init_nodes { host.add_node(&n); }
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let host_info = host.info.client_version.clone();
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info!("NetworkService::start(): id={:?}", host.info.id());
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try!(io_service.register_handler(host));
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Ok(NetworkService {
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io_service: io_service,
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host_info: host_info,
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})
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}
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/// Send a message over the network. Normaly `HostIo::send` should be used. This can be used from non-io threads.
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pub fn send(&mut self, peer: &PeerId, packet_id: PacketId, protocol: ProtocolId, data: &[u8]) -> Result<(), NetworkError> {
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try!(self.io_service.send_message(NetworkIoMessage::Send {
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peer: *peer,
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packet_id: packet_id,
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protocol: protocol,
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data: data.to_vec()
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}));
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Ok(())
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}
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/// Regiter a new protocol handler with the event loop.
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pub fn register_protocol(&mut self, handler: Box<NetworkProtocolHandler<Message>+Send>, protocol: ProtocolId, versions: &[u8]) -> Result<(), NetworkError> {
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try!(self.io_service.send_message(NetworkIoMessage::AddHandler {
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handler: Some(handler),
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protocol: protocol,
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versions: versions.to_vec(),
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}));
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Ok(())
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}
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/// Returns host identifier string as advertised to other peers
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pub fn host_info(&self) -> String {
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self.host_info.clone()
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}
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/// Returns underlying io service.
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pub fn io(&mut self) -> &mut IoService<NetworkIoMessage<Message>> {
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&mut self.io_service
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}
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}
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