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Fixed context lifetimes

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This commit is contained in:
arkpar 2016-01-13 13:56:48 +01:00
parent c98f73c5c9
commit 28c482691a
5 changed files with 158 additions and 139 deletions
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81
src/io/mod.rs
View File

@ -3,47 +3,38 @@
/// Example usage for craeting a network service and adding an IO handler: /// Example usage for craeting a network service and adding an IO handler:
/// ///
/// ```rust /// ```rust
/// extern crate ethcore_util as util; /// extern crate ethcore_util;
/// use util::network::*; /// use ethcore_util::*;
/// ///
/// struct MyHandler; /// struct MyHandler;
/// ///
/// impl ProtocolHandler for MyHandler { /// struct MyMessage {
/// fn initialize(&mut self, io: &mut HandlerIo) { /// data: u32
/// io.register_timer(1000);
/// } /// }
/// ///
/// fn read(&mut self, io: &mut HandlerIo, peer: &PeerId, packet_id: u8, data: &[u8]) { /// impl IoHandler<MyMessage> for MyHandler {
/// println!("Received {} ({} bytes) from {}", packet_id, data.len(), peer); /// fn initialize(&mut self, io: &mut IoContext<MyMessage>) {
/// io.register_timer(1000).unwrap();
/// } /// }
/// ///
/// fn connected(&mut self, io: &mut HandlerIo, peer: &PeerId) { /// fn timeout(&mut self, _io: &mut IoContext<MyMessage>, timer: TimerToken) {
/// 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); /// println!("Timeout {}", timer);
/// } /// }
/// ///
/// fn message(&mut self, io: &mut HandlerIo, message: &Message) { /// fn message(&mut self, _io: &mut IoContext<MyMessage>, message: &mut MyMessage) {
/// println!("Message {}:{}", message.protocol, message.id); /// println!("Message {}", message.data);
/// } /// }
/// } /// }
/// ///
/// fn main () { /// fn main () {
/// let mut service = NetworkService::start().expect("Error creating network service"); /// let mut service = IoService::<MyMessage>::start().expect("Error creating network service");
/// service.register_protocol(Box::new(MyHandler), "myproto", &[1u8]); /// service.register_handler(Box::new(MyHandler)).unwrap();
/// ///
/// // Wait for quit condition /// // Wait for quit condition
/// // ... /// // ...
/// // Drop the service /// // Drop the service
/// } /// }
/// ``` /// ```
extern crate mio;
mod service; mod service;
#[derive(Debug)] #[derive(Debug)]
@ -51,8 +42,8 @@ pub enum IoError {
Mio(::std::io::Error), Mio(::std::io::Error),
} }
impl<M> From<::mio::NotifyError<service::IoMessage<M>>> for IoError where M: Send { impl<Message> From<::mio::NotifyError<service::IoMessage<Message>>> for IoError where Message: Send {
fn from(_err: ::mio::NotifyError<service::IoMessage<M>>) -> IoError { fn from(_err: ::mio::NotifyError<service::IoMessage<Message>>) -> IoError {
IoError::Mio(::std::io::Error::new(::std::io::ErrorKind::ConnectionAborted, "Network IO notification error")) IoError::Mio(::std::io::Error::new(::std::io::ErrorKind::ConnectionAborted, "Network IO notification error"))
} }
} }
@ -62,17 +53,17 @@ impl<M> From<::mio::NotifyError<service::IoMessage<M>>> for IoError where M: Sen
/// `Message` type is used as notification data /// `Message` type is used as notification data
pub trait IoHandler<Message>: Send where Message: Send + 'static { pub trait IoHandler<Message>: Send where Message: Send + 'static {
/// Initialize the handler /// Initialize the handler
fn initialize(&mut self, _io: IoContext<Message>) {} fn initialize<'s>(&'s mut self, _io: &mut IoContext<'s, Message>) {}
/// Timer function called after a timeout created with `HandlerIo::timeout`. /// Timer function called after a timeout created with `HandlerIo::timeout`.
fn timeout(&mut self, _io: IoContext<Message>, _timer: TimerToken) {} fn timeout<'s>(&'s mut self, _io: &mut IoContext<'s, Message>, _timer: TimerToken) {}
/// Called when a broadcasted message is received. The message can only be sent from a different IO handler. /// Called when a broadcasted message is received. The message can only be sent from a different IO handler.
fn message(&mut self, _io: IoContext<Message>, _message: &mut Message) {} // TODO: make message immutable and provide internal channel for adding network handler fn message<'s>(&'s mut self, _io: &mut IoContext<'s, Message>, _message: &'s mut Message) {} // TODO: make message immutable and provide internal channel for adding network handler
/// Called when an IO stream gets closed /// Called when an IO stream gets closed
fn stream_hup(&mut self, _io: IoContext<Message>, _stream: StreamToken) {} fn stream_hup<'s>(&'s mut self, _io: &mut IoContext<'s, Message>, _stream: StreamToken) {}
/// Called when an IO stream can be read from /// Called when an IO stream can be read from
fn stream_readable(&mut self, _io: IoContext<Message>, _stream: StreamToken) {} fn stream_readable<'s>(&'s mut self, _io: &mut IoContext<'s, Message>, _stream: StreamToken) {}
/// Called when an IO stream can be written to /// Called when an IO stream can be written to
fn stream_writable(&mut self, _io: IoContext<Message>, _stream: StreamToken) {} fn stream_writable<'s>(&'s mut self, _io: &mut IoContext<'s, Message>, _stream: StreamToken) {}
} }
pub type TimerToken = service::TimerToken; pub type TimerToken = service::TimerToken;
@ -83,3 +74,35 @@ pub const USER_TOKEN_START: usize = service::USER_TOKEN;
#[cfg(test)]
mod tests {
use io::*;
struct MyHandler;
struct MyMessage {
data: u32
}
impl IoHandler<MyMessage> for MyHandler {
fn initialize(&mut self, io: &mut IoContext<MyMessage>) {
io.register_timer(1000).unwrap();
}
fn timeout(&mut self, _io: &mut IoContext<MyMessage>, timer: TimerToken) {
println!("Timeout {}", timer);
}
fn message(&mut self, _io: &mut IoContext<MyMessage>, message: &mut MyMessage) {
println!("Message {}", message.data);
}
}
#[test]
fn test_service_register_handler () {
let mut service = IoService::<MyMessage>::start().expect("Error creating network service");
service.register_handler(Box::new(MyHandler)).unwrap();
}
}

58
src/io/service.rs
View File

@ -16,26 +16,26 @@ const LAST_USER_TIMER: usize = USER_TIMER + MAX_USER_TIMERS - 1;
pub const USER_TOKEN: usize = LAST_USER_TIMER + 1; pub const USER_TOKEN: usize = LAST_USER_TIMER + 1;
/// Messages used to communicate with the event loop from other threads. /// Messages used to communicate with the event loop from other threads.
pub enum IoMessage<M> where M: Send + Sized { pub enum IoMessage<Message> where Message: Send + Sized {
/// Shutdown the event loop /// Shutdown the event loop
Shutdown, Shutdown,
/// Register a new protocol handler. /// Register a new protocol handler.
AddHandler { AddHandler {
handler: Box<IoHandler<M>+Send>, handler: Box<IoHandler<Message>+Send>,
}, },
/// Broadcast a message across all protocol handlers. /// Broadcast a message across all protocol handlers.
UserMessage(M) UserMessage(Message)
} }
/// IO access point. This is passed to all IO handlers and provides an interface to the IO subsystem. /// IO access point. This is passed to all IO handlers and provides an interface to the IO subsystem.
pub struct IoContext<'s, M> where M: Send + 'static { pub struct IoContext<'s, Message> where Message: Send + 'static {
timers: &'s mut Slab<UserTimer>, timers: &'s mut Slab<UserTimer>,
pub event_loop: &'s mut EventLoop<IoManager<M>>, pub event_loop: &'s mut EventLoop<IoManager<Message>>,
} }
impl<'s, M> IoContext<'s, M> where M: Send + 'static { impl<'s, Message> IoContext<'s, Message> where Message: Send + 'static {
/// Create a new IO access point. Takes references to all the data that can be updated within the IO handler. /// Create a new IO access point. Takes references to all the data that can be updated within the IO handler.
fn new(event_loop: &'s mut EventLoop<IoManager<M>>, timers: &'s mut Slab<UserTimer>) -> IoContext<'s, M> { fn new(event_loop: &'s mut EventLoop<IoManager<Message>>, timers: &'s mut Slab<UserTimer>) -> IoContext<'s, Message> {
IoContext { IoContext {
event_loop: event_loop, event_loop: event_loop,
timers: timers, timers: timers,
@ -56,7 +56,7 @@ impl<'s, M> IoContext<'s, M> where M: Send + 'static {
} }
/// Broadcast a message to other IO clients /// Broadcast a message to other IO clients
pub fn message(&mut self, message: M) { pub fn message(&mut self, message: Message) {
match self.event_loop.channel().send(IoMessage::UserMessage(message)) { match self.event_loop.channel().send(IoMessage::UserMessage(message)) {
Ok(_) => {} Ok(_) => {}
Err(e) => { panic!("Error sending io message {:?}", e); } Err(e) => { panic!("Error sending io message {:?}", e); }
@ -69,14 +69,14 @@ struct UserTimer {
} }
/// Root IO handler. Manages user handlers, messages and IO timers. /// Root IO handler. Manages user handlers, messages and IO timers.
pub struct IoManager<M> where M: Send { pub struct IoManager<Message> where Message: Send {
timers: Slab<UserTimer>, timers: Slab<UserTimer>,
handlers: Vec<Box<IoHandler<M>>>, handlers: Vec<Box<IoHandler<Message>>>,
} }
impl<M> IoManager<M> where M: Send + 'static { impl<Message> IoManager<Message> where Message: Send + 'static {
/// Creates a new instance and registers it with the event loop. /// Creates a new instance and registers it with the event loop.
pub fn start(event_loop: &mut EventLoop<IoManager<M>>) -> Result<(), UtilError> { pub fn start(event_loop: &mut EventLoop<IoManager<Message>>) -> Result<(), UtilError> {
let mut io = IoManager { let mut io = IoManager {
timers: Slab::new_starting_at(Token(USER_TIMER), MAX_USER_TIMERS), timers: Slab::new_starting_at(Token(USER_TIMER), MAX_USER_TIMERS),
handlers: Vec::new(), handlers: Vec::new(),
@ -86,24 +86,24 @@ impl<M> IoManager<M> where M: Send + 'static {
} }
} }
impl<M> Handler for IoManager<M> where M: Send + 'static { impl<Message> Handler for IoManager<Message> where Message: Send + 'static {
type Timeout = Token; type Timeout = Token;
type Message = IoMessage<M>; type Message = IoMessage<Message>;
fn ready(&mut self, event_loop: &mut EventLoop<Self>, token: Token, events: EventSet) { fn ready(&mut self, event_loop: &mut EventLoop<Self>, token: Token, events: EventSet) {
if events.is_hup() { if events.is_hup() {
for h in self.handlers.iter_mut() { for h in self.handlers.iter_mut() {
h.stream_hup(IoContext::new(event_loop, &mut self.timers), token.as_usize()); h.stream_hup(&mut IoContext::new(event_loop, &mut self.timers), token.as_usize());
} }
} }
else if events.is_readable() { else if events.is_readable() {
for h in self.handlers.iter_mut() { for h in self.handlers.iter_mut() {
h.stream_readable(IoContext::new(event_loop, &mut self.timers), token.as_usize()); h.stream_readable(&mut IoContext::new(event_loop, &mut self.timers), token.as_usize());
} }
} }
else if events.is_writable() { else if events.is_writable() {
for h in self.handlers.iter_mut() { for h in self.handlers.iter_mut() {
h.stream_writable(IoContext::new(event_loop, &mut self.timers), token.as_usize()); h.stream_writable(&mut IoContext::new(event_loop, &mut self.timers), token.as_usize());
} }
} }
} }
@ -116,13 +116,13 @@ impl<M> Handler for IoManager<M> where M: Send + 'static {
timer.delay timer.delay
}; };
for h in self.handlers.iter_mut() { for h in self.handlers.iter_mut() {
h.timeout(IoContext::new(event_loop, &mut self.timers), token.as_usize()); h.timeout(&mut IoContext::new(event_loop, &mut self.timers), token.as_usize());
} }
event_loop.timeout_ms(token, delay).expect("Error re-registering user timer"); event_loop.timeout_ms(token, delay).expect("Error re-registering user timer");
} }
_ => { // Just pass the event down. IoHandler is supposed to re-register it if required. _ => { // Just pass the event down. IoHandler is supposed to re-register it if required.
for h in self.handlers.iter_mut() { for h in self.handlers.iter_mut() {
h.timeout(IoContext::new(event_loop, &mut self.timers), token.as_usize()); h.timeout(&mut IoContext::new(event_loop, &mut self.timers), token.as_usize());
} }
} }
} }
@ -139,7 +139,7 @@ impl<M> Handler for IoManager<M> where M: Send + 'static {
}, },
IoMessage::UserMessage(ref mut data) => { IoMessage::UserMessage(ref mut data) => {
for h in self.handlers.iter_mut() { for h in self.handlers.iter_mut() {
h.message(IoContext::new(event_loop, &mut self.timers), data); h.message(&mut IoContext::new(event_loop, &mut self.timers), data);
} }
} }
} }
@ -147,19 +147,19 @@ impl<M> Handler for IoManager<M> where M: Send + 'static {
} }
/// General IO Service. Starts an event loop and dispatches IO requests. /// General IO Service. Starts an event loop and dispatches IO requests.
/// 'M' is a notification message type /// 'Message' is a notification message type
pub struct IoService<M> where M: Send + 'static { pub struct IoService<Message> where Message: Send + 'static {
thread: Option<JoinHandle<()>>, thread: Option<JoinHandle<()>>,
host_channel: Sender<IoMessage<M>> host_channel: Sender<IoMessage<Message>>
} }
impl<M> IoService<M> where M: Send + 'static { impl<Message> IoService<Message> where Message: Send + 'static {
/// Starts IO event loop /// Starts IO event loop
pub fn start() -> Result<IoService<M>, UtilError> { pub fn start() -> Result<IoService<Message>, UtilError> {
let mut event_loop = EventLoop::new().unwrap(); let mut event_loop = EventLoop::new().unwrap();
let channel = event_loop.channel(); let channel = event_loop.channel();
let thread = thread::spawn(move || { let thread = thread::spawn(move || {
IoManager::<M>::start(&mut event_loop).unwrap(); //TODO: IoManager::<Message>::start(&mut event_loop).unwrap(); //TODO:
}); });
Ok(IoService { Ok(IoService {
thread: Some(thread), thread: Some(thread),
@ -168,7 +168,7 @@ impl<M> IoService<M> where M: Send + 'static {
} }
/// Regiter a IO hadnler with the event loop. /// Regiter a IO hadnler with the event loop.
pub fn register_handler(&mut self, handler: Box<IoHandler<M>+Send>) -> Result<(), IoError> { pub fn register_handler(&mut self, handler: Box<IoHandler<Message>+Send>) -> Result<(), IoError> {
try!(self.host_channel.send(IoMessage::AddHandler { try!(self.host_channel.send(IoMessage::AddHandler {
handler: handler, handler: handler,
})); }));
@ -176,13 +176,13 @@ impl<M> IoService<M> where M: Send + 'static {
} }
/// Send a message over the network. Normaly `HostIo::send` should be used. This can be used from non-io threads. /// Send a message over the network. Normaly `HostIo::send` should be used. This can be used from non-io threads.
pub fn send_message(&mut self, message: M) -> Result<(), IoError> { pub fn send_message(&mut self, message: Message) -> Result<(), IoError> {
try!(self.host_channel.send(IoMessage::UserMessage(message))); try!(self.host_channel.send(IoMessage::UserMessage(message)));
Ok(()) Ok(())
} }
} }
impl<M> Drop for IoService<M> where M: Send { impl<Message> Drop for IoService<Message> where Message: Send {
fn drop(&mut self) { fn drop(&mut self) {
self.host_channel.send(IoMessage::Shutdown).unwrap(); self.host_channel.send(IoMessage::Shutdown).unwrap();
self.thread.take().unwrap().join().unwrap(); self.thread.take().unwrap().join().unwrap();

1
src/lib.rs
View File

@ -89,3 +89,4 @@ pub use heapsizeof::*;
pub use squeeze::*; pub use squeeze::*;
pub use semantic_version::*; pub use semantic_version::*;
pub use network::*; pub use network::*;
pub use io::*;

122
src/network/host.rs
View File

@ -1,5 +1,5 @@
use std::mem; use std::mem;
use std::net::{SocketAddr }; use std::net::{SocketAddr};
use std::collections::{HashMap}; use std::collections::{HashMap};
use std::hash::{Hasher}; use std::hash::{Hasher};
use std::str::{FromStr}; use std::str::{FromStr};
@ -103,20 +103,20 @@ impl Encodable for CapabilityInfo {
} }
/// IO access point. This is passed to all IO handlers and provides an interface to the IO subsystem. /// IO access point. This is passed to all IO handlers and provides an interface to the IO subsystem.
pub struct NetworkContext<'s, Message> where Message: Send + 'static { pub struct NetworkContext<'s, 'io, Message> where Message: Send + 'static, 'io: 's {
io: IoContext<'s, NetworkIoMessage<Message>>, io: &'s mut IoContext<'io, NetworkIoMessage<Message>>,
protocol: Option<ProtocolId>, protocol: ProtocolId,
connections: &'s mut Slab<ConnectionEntry>, connections: &'s mut Slab<ConnectionEntry>,
timers: &'s mut HashMap<TimerToken, ProtocolId>, timers: &'s mut HashMap<TimerToken, ProtocolId>,
session: Option<StreamToken>, session: Option<StreamToken>,
} }
impl<'s, Message> NetworkContext<'s, Message> where Message: Send + 'static, { impl<'s, 'io, Message> NetworkContext<'s, 'io, Message> where Message: Send + 'static, {
/// Create a new network IO access point. Takes references to all the data that can be updated within the IO handler. /// Create a new network IO access point. Takes references to all the data that can be updated within the IO handler.
fn new(io: IoContext<'s, NetworkIoMessage<Message>>, fn new(io: &'s mut IoContext<'io, NetworkIoMessage<Message>>,
protocol: Option<ProtocolId>, protocol: ProtocolId,
session: Option<StreamToken>, connections: &'s mut Slab<ConnectionEntry>, session: Option<StreamToken>, connections: &'s mut Slab<ConnectionEntry>,
timers: &'s mut HashMap<TimerToken, ProtocolId>) -> NetworkContext<'s, Message> { timers: &'s mut HashMap<TimerToken, ProtocolId>) -> NetworkContext<'s, 'io, Message> {
NetworkContext { NetworkContext {
io: io, io: io,
protocol: protocol, protocol: protocol,
@ -126,15 +126,11 @@ impl<'s, Message> NetworkContext<'s, Message> where Message: Send + 'static, {
} }
} }
fn set_protocol(&mut self, protocol: ProtocolId) {
self.protocol = Some(protocol);
}
/// Send a packet over the network to another peer. /// Send a packet over the network to another peer.
pub fn send(&mut self, peer: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), UtilError> { pub fn send(&mut self, peer: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), UtilError> {
match self.connections.get_mut(Token(peer)) { match self.connections.get_mut(Token(peer)) {
Some(&mut ConnectionEntry::Session(ref mut s)) => { Some(&mut ConnectionEntry::Session(ref mut s)) => {
s.send_packet(self.protocol.unwrap(), packet_id as u8, &data).unwrap_or_else(|e| { s.send_packet(self.protocol, packet_id as u8, &data).unwrap_or_else(|e| {
warn!(target: "net", "Send error: {:?}", e); warn!(target: "net", "Send error: {:?}", e);
}); //TODO: don't copy vector data }); //TODO: don't copy vector data
}, },
@ -164,7 +160,7 @@ impl<'s, Message> NetworkContext<'s, Message> where Message: Send + 'static, {
pub fn register_timer(&mut self, ms: u64) -> Result<TimerToken, UtilError>{ pub fn register_timer(&mut self, ms: u64) -> Result<TimerToken, UtilError>{
match self.io.register_timer(ms) { match self.io.register_timer(ms) {
Ok(token) => { Ok(token) => {
self.timers.insert(token, self.protocol.unwrap()); self.timers.insert(token, self.protocol);
Ok(token) Ok(token)
}, },
e @ Err(_) => e, e @ Err(_) => e,
@ -259,7 +255,7 @@ impl<Message> Host<Message> where Message: Send {
} }
} }
fn maintain_network(&mut self, io: IoContext<NetworkIoMessage<Message>>) { fn maintain_network(&mut self, io: &mut IoContext<NetworkIoMessage<Message>>) {
self.connect_peers(io); self.connect_peers(io);
} }
@ -271,7 +267,7 @@ impl<Message> Host<Message> where Message: Send {
self.connections.iter().any(|e| match e { &ConnectionEntry::Handshake(ref h) => h.id.eq(&id), _ => false }) self.connections.iter().any(|e| match e { &ConnectionEntry::Handshake(ref h) => h.id.eq(&id), _ => false })
} }
fn connect_peers(&mut self, mut io: IoContext<NetworkIoMessage<Message>>) { fn connect_peers(&mut self, io: &mut IoContext<NetworkIoMessage<Message>>) {
struct NodeInfo { struct NodeInfo {
id: NodeId, id: NodeId,
peer_type: PeerType peer_type: PeerType
@ -296,7 +292,7 @@ impl<Message> Host<Message> where Message: Send {
for n in to_connect.iter() { for n in to_connect.iter() {
if n.peer_type == PeerType::Required { if n.peer_type == PeerType::Required {
if req_conn < IDEAL_PEERS { if req_conn < IDEAL_PEERS {
self.connect_peer(&n.id, &mut io); self.connect_peer(&n.id, io);
} }
req_conn += 1; req_conn += 1;
} }
@ -311,7 +307,7 @@ impl<Message> Host<Message> where Message: Send {
for n in to_connect.iter() { for n in to_connect.iter() {
if n.peer_type == PeerType::Optional && open_slots > 0 { if n.peer_type == PeerType::Optional && open_slots > 0 {
open_slots -= 1; open_slots -= 1;
self.connect_peer(&n.id, &mut io); self.connect_peer(&n.id, io);
} }
} }
} }
@ -362,11 +358,11 @@ impl<Message> Host<Message> where Message: Send {
} }
fn accept(&mut self, _io: IoContext<NetworkIoMessage<Message>>) { fn accept(&mut self, _io: &mut IoContext<NetworkIoMessage<Message>>) {
trace!(target: "net", "accept"); trace!(target: "net", "accept");
} }
fn connection_writable<'s>(&'s mut self, token: StreamToken, io: IoContext<'s, NetworkIoMessage<Message>>) { fn connection_writable<'s>(&'s mut self, token: StreamToken, io: &mut IoContext<'s, NetworkIoMessage<Message>>) {
let mut kill = false; let mut kill = false;
let mut create_session = false; let mut create_session = false;
match self.connections.get_mut(Token(token)) { match self.connections.get_mut(Token(token)) {
@ -387,27 +383,25 @@ impl<Message> Host<Message> where Message: Send {
warn!(target: "net", "Received event for unknown connection"); warn!(target: "net", "Received event for unknown connection");
} }
} }
let mut net_context = NetworkContext::new(io, None, Some(token), &mut self.connections, &mut self.timers);
if kill { if kill {
Host::kill_connection(token, &mut net_context, &mut self.handlers); self.kill_connection(token, io);
return;
} else if create_session {
self.start_session(token, io);
} }
if create_session { match self.connections.get_mut(Token(token)) {
Host::start_session(&self.info, token, &mut net_context);
}
match net_context.connections.get_mut(Token(token)) {
Some(&mut ConnectionEntry::Session(ref mut s)) => { Some(&mut ConnectionEntry::Session(ref mut s)) => {
s.reregister(net_context.io.event_loop).unwrap_or_else(|e| debug!(target: "net", "Session registration error: {:?}", e)); s.reregister(io.event_loop).unwrap_or_else(|e| debug!(target: "net", "Session registration error: {:?}", e));
}, },
_ => (), _ => (),
} }
} }
fn connection_closed<'s>(&'s mut self, token: TimerToken, io: IoContext<'s, NetworkIoMessage<Message>>) { fn connection_closed<'s>(&'s mut self, token: TimerToken, io: &mut IoContext<'s, NetworkIoMessage<Message>>) {
let mut net_context = NetworkContext::new(io, None, Some(token), &mut self.connections, &mut self.timers); self.kill_connection(token, io);
Host::kill_connection(token, &mut net_context, &mut self.handlers);
} }
fn connection_readable<'s>(&'s mut self, token: StreamToken, io: IoContext<'s, NetworkIoMessage<Message>>) { fn connection_readable<'s>(&'s mut self, token: StreamToken, io: &mut IoContext<'s, NetworkIoMessage<Message>>) {
let mut kill = false; let mut kill = false;
let mut create_session = false; let mut create_session = false;
let mut ready_data: Vec<ProtocolId> = Vec::new(); let mut ready_data: Vec<ProtocolId> = Vec::new();
@ -451,37 +445,35 @@ impl<Message> Host<Message> where Message: Send {
warn!(target: "net", "Received event for unknown connection"); warn!(target: "net", "Received event for unknown connection");
} }
} }
let mut net_context = NetworkContext::new(io, None, Some(token), &mut self.connections, &mut self.timers);
if kill { if kill {
Host::kill_connection(token, &mut net_context, &mut self.handlers); self.kill_connection(token, io);
return;
} }
if create_session { if create_session {
Host::start_session(&self.info, token, &mut net_context); self.start_session(token, io);
} }
for p in ready_data { for p in ready_data {
let mut h = self.handlers.get_mut(p).unwrap(); let mut h = self.handlers.get_mut(p).unwrap();
net_context.set_protocol(p); h.connected(&mut NetworkContext::new(io, p, Some(token), &mut self.connections, &mut self.timers), &token);
h.connected(&mut net_context, &token);
} }
if let Some((p, packet_id, data)) = packet_data { if let Some((p, packet_id, data)) = packet_data {
let mut h = self.handlers.get_mut(p).unwrap(); let mut h = self.handlers.get_mut(p).unwrap();
net_context.set_protocol(p); h.read(&mut NetworkContext::new(io, p, Some(token), &mut self.connections, &mut self.timers), &token, packet_id, &data[1..]);
h.read(&mut net_context, &token, packet_id, &data[1..]);
} }
match net_context.connections.get_mut(Token(token)) { match self.connections.get_mut(Token(token)) {
Some(&mut ConnectionEntry::Session(ref mut s)) => { Some(&mut ConnectionEntry::Session(ref mut s)) => {
s.reregister(net_context.io.event_loop).unwrap_or_else(|e| debug!(target: "net", "Session registration error: {:?}", e)); s.reregister(io.event_loop).unwrap_or_else(|e| debug!(target: "net", "Session registration error: {:?}", e));
}, },
_ => (), _ => (),
} }
} }
fn start_session(info: &HostInfo, token: StreamToken, io: &mut NetworkContext<Message>) { fn start_session(&mut self, token: StreamToken, io: &mut IoContext<NetworkIoMessage<Message>>) {
let event_loop = &mut io.io.event_loop; let info = &self.info;
io.connections.replace_with(Token(token), |c| { self.connections.replace_with(Token(token), |c| {
match c { match c {
ConnectionEntry::Handshake(h) => Session::new(h, event_loop, info) ConnectionEntry::Handshake(h) => Session::new(h, io.event_loop, info)
.map(|s| Some(ConnectionEntry::Session(s))) .map(|s| Some(ConnectionEntry::Session(s)))
.unwrap_or_else(|e| { .unwrap_or_else(|e| {
debug!(target: "net", "Session construction error: {:?}", e); debug!(target: "net", "Session construction error: {:?}", e);
@ -492,17 +484,16 @@ impl<Message> Host<Message> where Message: Send {
}).expect("Error updating slab with session"); }).expect("Error updating slab with session");
} }
fn connection_timeout<'s>(&'s mut self, token: StreamToken, io: IoContext<'s, NetworkIoMessage<Message>>) { fn connection_timeout<'s>(&'s mut self, token: StreamToken, io: &mut IoContext<'s, NetworkIoMessage<Message>>) {
let mut net_context = NetworkContext::new(io, None, Some(token), &mut self.connections, &mut self.timers); self.kill_connection(token, io)
Host::kill_connection(token, &mut net_context, &mut self.handlers)
} }
fn kill_connection(token: StreamToken, io: &mut NetworkContext<Message>, handlers: &mut HashMap<ProtocolId, Box<NetworkProtocolHandler<Message>>>) { fn kill_connection<'s>(&'s mut self, token: StreamToken, io: &mut IoContext<'s, NetworkIoMessage<Message>>) {
let mut to_disconnect: Vec<ProtocolId> = Vec::new(); let mut to_disconnect: Vec<ProtocolId> = Vec::new();
match io.connections.get_mut(Token(token)) { match self.connections.get_mut(Token(token)) {
Some(&mut ConnectionEntry::Handshake(_)) => (), // just abandon handshake Some(&mut ConnectionEntry::Handshake(_)) => (), // just abandon handshake
Some(&mut ConnectionEntry::Session(ref mut s)) if s.is_ready() => { Some(&mut ConnectionEntry::Session(ref mut s)) if s.is_ready() => {
for (p, _) in handlers.iter_mut() { for (p, _) in self.handlers.iter_mut() {
if s.have_capability(p) { if s.have_capability(p) {
to_disconnect.push(p); to_disconnect.push(p);
} }
@ -511,17 +502,16 @@ impl<Message> Host<Message> where Message: Send {
_ => (), _ => (),
} }
for p in to_disconnect { for p in to_disconnect {
let mut h = handlers.get_mut(p).unwrap(); let mut h = self.handlers.get_mut(p).unwrap();
io.set_protocol(p); h.disconnected(&mut NetworkContext::new(io, p, Some(token), &mut self.connections, &mut self.timers), &token);
h.disconnected(io, &token);
} }
io.connections.remove(Token(token)); self.connections.remove(Token(token));
} }
} }
impl<Message> IoHandler<NetworkIoMessage<Message>> for Host<Message> where Message: Send + 'static { impl<Message> IoHandler<NetworkIoMessage<Message>> for Host<Message> where Message: Send + 'static {
/// Initialize networking /// Initialize networking
fn initialize(&mut self, io: IoContext<NetworkIoMessage<Message>>) { fn initialize(&mut self, io: &mut IoContext<NetworkIoMessage<Message>>) {
/* /*
match ::ifaces::Interface::get_all().unwrap().into_iter().filter(|x| x.kind == ::ifaces::Kind::Packet && x.addr.is_some()).next() { match ::ifaces::Interface::get_all().unwrap().into_iter().filter(|x| x.kind == ::ifaces::Kind::Packet && x.addr.is_some()).next() {
Some(iface) => config.public_address = iface.addr.unwrap(), Some(iface) => config.public_address = iface.addr.unwrap(),
@ -545,7 +535,7 @@ impl<Message> IoHandler<NetworkIoMessage<Message>> for Host<Message> where Messa
self.add_node("enode://5374c1bff8df923d3706357eeb4983cd29a63be40a269aaa2296ee5f3b2119a8978c0ed68b8f6fc84aad0df18790417daadf91a4bfbb786a16c9b0a199fa254a@92.51.165.126:30303"); self.add_node("enode://5374c1bff8df923d3706357eeb4983cd29a63be40a269aaa2296ee5f3b2119a8978c0ed68b8f6fc84aad0df18790417daadf91a4bfbb786a16c9b0a199fa254a@92.51.165.126:30303");
} }
fn stream_hup(&mut self, io: IoContext<NetworkIoMessage<Message>>, stream: StreamToken) { fn stream_hup<'s>(&'s mut self, io: &mut IoContext<'s, NetworkIoMessage<Message>>, stream: StreamToken) {
trace!(target: "net", "Hup: {}", stream); trace!(target: "net", "Hup: {}", stream);
match stream { match stream {
FIRST_CONNECTION ... LAST_CONNECTION => self.connection_closed(stream, io), FIRST_CONNECTION ... LAST_CONNECTION => self.connection_closed(stream, io),
@ -553,7 +543,7 @@ impl<Message> IoHandler<NetworkIoMessage<Message>> for Host<Message> where Messa
}; };
} }
fn stream_readable(&mut self, io: IoContext<NetworkIoMessage<Message>>, stream: StreamToken) { fn stream_readable<'s>(&'s mut self, io: &mut IoContext<'s, NetworkIoMessage<Message>>, stream: StreamToken) {
match stream { match stream {
TCP_ACCEPT => self.accept(io), TCP_ACCEPT => self.accept(io),
FIRST_CONNECTION ... LAST_CONNECTION => self.connection_readable(stream, io), FIRST_CONNECTION ... LAST_CONNECTION => self.connection_readable(stream, io),
@ -562,39 +552,41 @@ impl<Message> IoHandler<NetworkIoMessage<Message>> for Host<Message> where Messa
} }
} }
fn stream_writable(&mut self, io: IoContext<NetworkIoMessage<Message>>, stream: StreamToken) { fn stream_writable<'s>(&'s mut self, io: &mut IoContext<'s, NetworkIoMessage<Message>>, stream: StreamToken) {
match stream { match stream {
FIRST_CONNECTION ... LAST_CONNECTION => self.connection_writable(stream, io), FIRST_CONNECTION ... LAST_CONNECTION => self.connection_writable(stream, io),
_ => panic!("Received unknown writable token"), _ => panic!("Received unknown writable token"),
} }
} }
fn timeout(&mut self, io: IoContext<NetworkIoMessage<Message>>, token: TimerToken) { fn timeout<'s>(&'s mut self, io: &mut IoContext<'s, NetworkIoMessage<Message>>, token: TimerToken) {
match token { match token {
IDLE => self.maintain_network(io), IDLE => self.maintain_network(io),
FIRST_CONNECTION ... LAST_CONNECTION => self.connection_timeout(token, io), FIRST_CONNECTION ... LAST_CONNECTION => self.connection_timeout(token, io),
NODETABLE_DISCOVERY => {}, NODETABLE_DISCOVERY => {},
NODETABLE_MAINTAIN => {}, NODETABLE_MAINTAIN => {},
_ => { _ => {
let protocol: ProtocolId = self.timers.get_mut(&token).expect("Unknown user timer token"); let protocol = *self.timers.get_mut(&token).expect("Unknown user timer token");
match self.handlers.get_mut(protocol) { match self.handlers.get_mut(protocol) {
None => { warn!(target: "net", "No handler found for protocol: {:?}", protocol) }, None => { warn!(target: "net", "No handler found for protocol: {:?}", protocol) },
Some(h) => { Some(h) => {
h.timeout(&mut NetworkContext::new(io, Some(protocol), Some(token), &mut self.connections, &mut self.timers), token); h.timeout(&mut NetworkContext::new(io, protocol, Some(token), &mut self.connections, &mut self.timers), token);
} }
} }
} }
} }
} }
fn message(&mut self, io: IoContext<NetworkIoMessage<Message>>, message: &mut NetworkIoMessage<Message>) { fn message<'s>(&'s mut self, io: &mut IoContext<'s, NetworkIoMessage<Message>>, message: &'s mut NetworkIoMessage<Message>) {
match message { match message {
&mut NetworkIoMessage::AddHandler { &mut NetworkIoMessage::AddHandler {
ref mut handler, ref mut handler,
ref protocol, ref protocol,
ref versions ref versions
} => { } => {
self.handlers.insert(protocol, mem::replace(handler, None).unwrap()); let mut h = mem::replace(handler, None).unwrap();
h.initialize(&mut NetworkContext::new(io, protocol, None, &mut self.connections, &mut self.timers));
self.handlers.insert(protocol, h);
for v in versions { for v in versions {
self.info.capabilities.push(CapabilityInfo { protocol: protocol, version: *v, packet_count:0 }); self.info.capabilities.push(CapabilityInfo { protocol: protocol, version: *v, packet_count:0 });
} }
@ -620,11 +612,9 @@ impl<Message> IoHandler<NetworkIoMessage<Message>> for Host<Message> where Messa
ref protocol, ref protocol,
ref message ref message
} => { } => {
let mut net_context = NetworkContext::new(io, None, None, &mut self.connections, &mut self.timers);
for (p, h) in self.handlers.iter_mut() { for (p, h) in self.handlers.iter_mut() {
if p != protocol { if p != protocol {
net_context.set_protocol(p); h.message(&mut NetworkContext::new(io, p, None, &mut self.connections, &mut self.timers), &message);
h.message(&mut net_context, &message);
} }
} }
} }

29
src/network/mod.rs
View File

@ -4,38 +4,42 @@
/// ///
/// ```rust /// ```rust
/// extern crate ethcore_util as util; /// extern crate ethcore_util as util;
/// use util::network::*; /// use util::*;
/// ///
/// struct MyHandler; /// struct MyHandler;
/// ///
/// impl ProtocolHandler for MyHandler { /// struct MyMessage {
/// fn initialize(&mut self, io: &mut NetworkContext) { /// data: u32
/// }
///
/// impl NetworkProtocolHandler<MyMessage> for MyHandler {
/// fn initialize(&mut self, io: &mut NetworkContext<MyMessage>) {
/// io.register_timer(1000); /// io.register_timer(1000);
/// } /// }
/// ///
/// fn read(&mut self, io: &mut NetworkContext, peer: &PeerId, packet_id: u8, data: &[u8]) { /// fn read(&mut self, io: &mut NetworkContext<MyMessage>, peer: &PeerId, packet_id: u8, data: &[u8]) {
/// println!("Received {} ({} bytes) from {}", packet_id, data.len(), peer); /// println!("Received {} ({} bytes) from {}", packet_id, data.len(), peer);
/// } /// }
/// ///
/// fn connected(&mut self, io: &mut NetworkContext, peer: &PeerId) { /// fn connected(&mut self, io: &mut NetworkContext<MyMessage>, peer: &PeerId) {
/// println!("Connected {}", peer); /// println!("Connected {}", peer);
/// } /// }
/// ///
/// fn disconnected(&mut self, io: &mut NetworkContext, peer: &PeerId) { /// fn disconnected(&mut self, io: &mut NetworkContext<MyMessage>, peer: &PeerId) {
/// println!("Disconnected {}", peer); /// println!("Disconnected {}", peer);
/// } /// }
/// ///
/// fn timeout(&mut self, io: &mut NetworkContext, timer: TimerToken) { /// fn timeout(&mut self, io: &mut NetworkContext<MyMessage>, timer: TimerToken) {
/// println!("Timeout {}", timer); /// println!("Timeout {}", timer);
/// } /// }
/// ///
/// fn message(&mut self, io: &mut NetworkContext, message: &Message) { /// fn message(&mut self, io: &mut NetworkContext<MyMessage>, message: &MyMessage) {
/// println!("Message {}:{}", message.protocol, message.id); /// println!("Message {}", message.data);
/// } /// }
/// } /// }
/// ///
/// fn main () { /// fn main () {
/// let mut service = NetworkService::start().expect("Error creating network service"); /// let mut service = NetworkService::<MyMessage>::start().expect("Error creating network service");
/// service.register_protocol(Box::new(MyHandler), "myproto", &[1u8]); /// service.register_protocol(Box::new(MyHandler), "myproto", &[1u8]);
/// ///
/// // Wait for quit condition /// // Wait for quit condition
@ -43,7 +47,6 @@
/// // Drop the service /// // Drop the service
/// } /// }
/// ``` /// ```
extern crate mio;
mod host; mod host;
mod connection; mod connection;
mod handshake; mod handshake;
@ -55,7 +58,7 @@ mod node;
pub type PeerId = host::PeerId; pub type PeerId = host::PeerId;
pub type PacketId = host::PacketId; pub type PacketId = host::PacketId;
pub type NetworkContext<'s, Message> = host::NetworkContext<'s, Message>; pub type NetworkContext<'s,'io, Message> = host::NetworkContext<'s, 'io, Message>;
pub type NetworkService<Message> = service::NetworkService<Message>; pub type NetworkService<Message> = service::NetworkService<Message>;
pub type NetworkIoMessage<Message> = host::NetworkIoMessage<Message>; pub type NetworkIoMessage<Message> = host::NetworkIoMessage<Message>;
pub type NetworkError = error::NetworkError; pub type NetworkError = error::NetworkError;
@ -66,6 +69,8 @@ use io::*;
/// All the handler function are called from within IO event loop. /// All the handler function are called from within IO event loop.
/// `Message` is the type for message data. /// `Message` is the type for message data.
pub trait NetworkProtocolHandler<Message>: Send where Message: Send { pub trait NetworkProtocolHandler<Message>: Send where Message: Send {
/// Initialize the handler
fn initialize(&mut self, _io: &mut NetworkContext<Message>) {}
/// Called when new network packet received. /// Called when new network packet received.
fn read(&mut self, io: &mut NetworkContext<Message>, peer: &PeerId, packet_id: u8, data: &[u8]); fn read(&mut self, io: &mut NetworkContext<Message>, peer: &PeerId, packet_id: u8, data: &[u8]);
/// Called when new peer is connected. Only called when peer supports the same protocol. /// Called when new peer is connected. Only called when peer supports the same protocol.