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Promise { + InOrder, + NoCorrupt, + GuaranteedDelivery, + Encrypted, +} + +pub struct Participant { + addr: Address, +} + +pub struct Connection {} + +pub struct Stream {} + +pub trait Events { + fn OnRemoteConnectionOpen(net: &Network, con: &Connection) + where + Self: std::marker::Sized; + fn OnRemoteConnectionClose(net: &Network, con: &Connection) + where + Self: std::marker::Sized; + fn OnRemoteStreamOpen(net: &Network, st: &Stream) + where + Self: std::marker::Sized; + fn OnRemoteStreamClose(net: &Network, st: &Stream) + where + Self: std::marker::Sized; +} + +pub enum TokenObjects { + TCP_LISTENER(TcpListener), +} + +pub struct NetworkData { + next_token_id: usize, + tokens: HashMap, //TODO: move to Vec for faster lookup + poll: Poll, +} + +pub struct Network { + internal_sync: Arc>, + thread_pool: ThreadPool, + participant_id: u64, + _pe: PhantomData, +} + +impl NetworkData { + pub fn new() -> Self { + NetworkData { + next_token_id: 0, + tokens: HashMap::new(), + poll: Poll::new().unwrap(), + } + } +} + +impl Network { + const TCP_LISTEN_TOK: Token = Token(0); + + pub fn new() -> Self { + let thread_pool = ThreadPoolBuilder::new() + .name("veloren-network".into()) + .build(); + let internal_sync = Arc::new(RwLock::new(NetworkData::new())); + let internal_sync_clone = internal_sync.clone(); + thread_pool.execute(|| master_poll_worker(internal_sync_clone)); + Self { + internal_sync, + thread_pool, + participant_id: 42, + _pe: PhantomData:: {}, + } + } + + pub fn send<'a, M: Message<'a>>(&self, msg: M, stream: &Stream) {} + + pub fn listen(&self, addr: &Address) { + let addr = addr.clone(); + let internal_sync = self.internal_sync.clone(); + self.thread_pool.execute(move || match addr { + Address::Tcp(a) => { + let tcp_listener = TcpListener::bind(&a).unwrap(); + let mut internal_sync = internal_sync.write().unwrap(); + let tok = Token(internal_sync.next_token_id); + internal_sync.next_token_id += 1; + internal_sync + .poll + .register(&tcp_listener, tok, Ready::readable(), PollOpt::edge()) + .unwrap(); + internal_sync + .tokens + .insert(tok, TokenObjects::TCP_LISTENER(tcp_listener)); + }, + Address::Udp(_) => unimplemented!("lazy me"), + }); + } + + pub fn connect(&self, addr: &Address) -> Participant { Participant { addr: addr.clone() } } + + pub fn open(&self, part: Participant, prio: u8, prom: EnumSet) -> Stream { Stream {} } + + pub fn close(&self, stream: Stream) {} +} + +fn master_poll_worker(internal_sync: Arc>) { + let mut events = mio::Events::with_capacity(1024); + loop { + let internal_sync = internal_sync.write().unwrap(); + if let Err(err) = internal_sync + .poll + .poll(&mut events, Some(Duration::from_millis(1))) + { + //postbox_tx.send(Err(err.into()))?; + return; + } + + for event in &events { + match internal_sync.tokens.get(&event.token()) { + Some(e) => { + match e { + TokenObjects::TCP_LISTENER(listener) => { + match listener.accept() { + Ok((stream, _)) => {}, /* PostBox::from_tcpstream(stream) */ + Err(err) => {}, /* Err(err.into()) */ + } + }, + } + }, + None => panic!("Unexpected event token '{:?}'", &event.token()), + }; + } + } +} + +impl Address { + pub fn getProtocol(&self) -> Protocol { + match self { + Address::Tcp(_) => Protocol::Tcp, + Address::Udp(_) => Protocol::Udp, + } + } +} diff --git a/network/src/lib.rs b/network/src/lib.rs new file mode 100644 index 0000000000..45ca1c46ab --- /dev/null +++ b/network/src/lib.rs @@ -0,0 +1,52 @@ +#![feature(trait_alias)] +mod api; +mod message; +mod protocol; + +#[cfg(test)] +mod tests { + use crate::api::*; + use std::net::SocketAddr; + + struct N { + id: u8, + } + impl Events for N { + fn OnRemoteConnectionOpen(net: &Network, con: &Connection) {} + + fn OnRemoteConnectionClose(net: &Network, con: &Connection) {} + + fn OnRemoteStreamOpen(net: &Network, st: &Stream) {} + + fn OnRemoteStreamClose(net: &Network, st: &Stream) {} + } + + #[test] + fn it_works() { + assert_eq!(2 + 2, 4); + } + + #[test] + fn client_server() { + let n1 = Network::::new(); + let n2 = Network::::new(); + let a1s = Address::Tcp(SocketAddr::from(([0, 0, 0, 0], 52000u16))); + let a1 = Address::Tcp(SocketAddr::from(([1, 0, 0, 127], 52000u16))); + let a2s = Address::Tcp(SocketAddr::from(([0, 0, 0, 0], 52001u16))); + let a2 = Address::Tcp(SocketAddr::from(([1, 0, 0, 127], 52001u16))); + n1.listen(&a1s); //await + n2.listen(&a2s); // only requiered here, but doesnt hurt on n1 + + let p1 = n1.connect(&a2); //await + //n2.OnRemoteConnectionOpen triggered + + let s1 = n1.open(p1, 16, Promise::InOrder | Promise::NoCorrupt); + //n2.OnRemoteStreamOpen triggered + + n1.send("", &s1); + // receive on n2 now + + n1.close(s1); + //n2.OnRemoteStreamClose triggered + } +} diff --git a/network/src/message.rs b/network/src/message.rs new file mode 100644 index 0000000000..a7b5fffc5d --- /dev/null +++ b/network/src/message.rs @@ -0,0 +1,45 @@ +use bincode; +use serde::{Deserialize, Serialize}; +use std::{collections::VecDeque, sync::Arc}; +pub trait Message<'a> = Serialize + Deserialize<'a>; + +struct MessageBuffer { + // use VecDeque for msg storage, because it allows to quickly remove data from front. + //however VecDeque needs custom bincode code, but it's possible + data: Vec, +} + +struct OutGoingMessage { + buffer: Arc, + cursor: u64, +} + +fn serialize<'a, M: Message<'a>>(message: &M) -> MessageBuffer { + let mut writer = { + let actual_size = bincode::serialized_size(message).unwrap(); + Vec::::with_capacity(actual_size as usize) + }; + if let Err(e) = bincode::serialize_into(&mut writer, message) { + println!("Oh nooo {}", e); + }; + MessageBuffer { data: writer } +} + +#[cfg(test)] +mod tests { + use crate::message::*; + + #[test] + fn serialize_test() { + let msg = "abc"; + let mb = serialize(&msg); + assert_eq!(mb.data.len(), 11); + assert_eq!(mb.data[0], 3); + assert_eq!(mb.data[1], 0); + assert_eq!(mb.data[7], 0); + assert_eq!(mb.data[8], 'a' as u8); + assert_eq!(mb.data[8], 97); + assert_eq!(mb.data[9], 'b' as u8); + assert_eq!(mb.data[10], 'c' as u8); + } +} diff --git a/network/src/protocol.rs b/network/src/protocol.rs new file mode 100644 index 0000000000..e46e33610d --- /dev/null +++ b/network/src/protocol.rs @@ -0,0 +1,4 @@ +pub enum Protocol { + Tcp, + Udp, +}