rust/hedgewars-server/src/server/network.rs
author alfadur
Fri, 04 Oct 2019 23:23:35 +0300
changeset 15441 61a0bd0bb021
parent 15176 f6115638aa92
child 15517 abd5eb807166
permissions -rw-r--r--
refactor root handler
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extern crate slab;
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use std::{
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    collections::HashSet,
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    io,
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    io::{Error, ErrorKind, Read, Write},
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    mem::{replace, swap},
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    net::{IpAddr, Ipv4Addr, SocketAddr},
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};
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use log::*;
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use mio::{
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    net::{TcpListener, TcpStream},
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    Evented, Poll, PollOpt, Ready, Token,
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};
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use mio_extras::timer;
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use netbuf;
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use slab::Slab;
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use crate::{
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    core::{server::HwServer, types::ClientId},
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    handlers,
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    handlers::{IoResult, IoTask},
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    protocol::{messages::HwServerMessage::Redirect, messages::*, ProtocolDecoder},
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    utils,
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};
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#[cfg(feature = "official-server")]
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use super::io::{IoThread, RequestId};
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#[cfg(feature = "tls-connections")]
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use openssl::{
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    error::ErrorStack,
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    ssl::{
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        HandshakeError, MidHandshakeSslStream, Ssl, SslContext, SslContextBuilder, SslFiletype,
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        SslMethod, SslOptions, SslStream, SslStreamBuilder, SslVerifyMode,
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    },
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};
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use std::time::Duration;
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const MAX_BYTES_PER_READ: usize = 2048;
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const SEND_PING_TIMEOUT: Duration = Duration::from_secs(30);
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const DROP_CLIENT_TIMEOUT: Duration = Duration::from_secs(30);
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const PING_PROBES_COUNT: u8 = 2;
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#[derive(Hash, Eq, PartialEq, Copy, Clone)]
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pub enum NetworkClientState {
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    Idle,
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    NeedsWrite,
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    NeedsRead,
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    Closed,
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    #[cfg(feature = "tls-connections")]
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    Connected,
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}
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type NetworkResult<T> = io::Result<(T, NetworkClientState)>;
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pub enum ClientSocket {
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    Plain(TcpStream),
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    #[cfg(feature = "tls-connections")]
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    SslHandshake(Option<MidHandshakeSslStream<TcpStream>>),
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    #[cfg(feature = "tls-connections")]
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    SslStream(SslStream<TcpStream>),
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}
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impl ClientSocket {
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    fn inner(&self) -> &TcpStream {
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        match self {
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            ClientSocket::Plain(stream) => stream,
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            #[cfg(feature = "tls-connections")]
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            ClientSocket::SslHandshake(Some(builder)) => builder.get_ref(),
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            #[cfg(feature = "tls-connections")]
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            ClientSocket::SslHandshake(None) => unreachable!(),
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            #[cfg(feature = "tls-connections")]
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            ClientSocket::SslStream(ssl_stream) => ssl_stream.get_ref(),
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        }
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    }
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}
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pub struct NetworkClient {
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    id: ClientId,
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    socket: ClientSocket,
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    peer_addr: SocketAddr,
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    decoder: ProtocolDecoder,
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    buf_out: netbuf::Buf,
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    timeout: timer::Timeout,
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    pending_close: bool,
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}
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impl NetworkClient {
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    pub fn new(
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        id: ClientId,
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        socket: ClientSocket,
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        peer_addr: SocketAddr,
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        timeout: timer::Timeout,
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    ) -> NetworkClient {
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        NetworkClient {
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            id,
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            socket,
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            peer_addr,
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            decoder: ProtocolDecoder::new(),
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            buf_out: netbuf::Buf::new(),
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            timeout,
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            pending_close: false,
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        }
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    }
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    #[cfg(feature = "tls-connections")]
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    fn handshake_impl(
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        &mut self,
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        handshake: MidHandshakeSslStream<TcpStream>,
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    ) -> io::Result<NetworkClientState> {
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        match handshake.handshake() {
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            Ok(stream) => {
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                self.socket = ClientSocket::SslStream(stream);
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                debug!(
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                    "TLS handshake with {} ({}) completed",
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                    self.id, self.peer_addr
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                );
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                Ok(NetworkClientState::Connected)
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            }
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            Err(HandshakeError::WouldBlock(new_handshake)) => {
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                self.socket = ClientSocket::SslHandshake(Some(new_handshake));
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                Ok(NetworkClientState::Idle)
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            }
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            Err(HandshakeError::Failure(new_handshake)) => {
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                self.socket = ClientSocket::SslHandshake(Some(new_handshake));
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                debug!("TLS handshake with {} ({}) failed", self.id, self.peer_addr);
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                Err(Error::new(ErrorKind::Other, "Connection failure"))
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            }
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            Err(HandshakeError::SetupFailure(_)) => unreachable!(),
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        }
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    }
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    fn read_impl<R: Read>(
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        decoder: &mut ProtocolDecoder,
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        source: &mut R,
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        id: ClientId,
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        addr: &SocketAddr,
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    ) -> NetworkResult<Vec<HwProtocolMessage>> {
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        let mut bytes_read = 0;
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        let result = loop {
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            match decoder.read_from(source) {
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                Ok(bytes) => {
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                    debug!("Client {}: read {} bytes", id, bytes);
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                    bytes_read += bytes;
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                    if bytes == 0 {
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                        let result = if bytes_read == 0 {
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                            info!("EOF for client {} ({})", id, addr);
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                            (Vec::new(), NetworkClientState::Closed)
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                        } else {
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                            (decoder.extract_messages(), NetworkClientState::NeedsRead)
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                        };
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                        break Ok(result);
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                    } else if bytes_read >= MAX_BYTES_PER_READ {
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                        break Ok((decoder.extract_messages(), NetworkClientState::NeedsRead));
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                    }
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                }
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                Err(ref error) if error.kind() == ErrorKind::WouldBlock => {
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                    let messages = if bytes_read == 0 {
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                        Vec::new()
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                    } else {
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                        decoder.extract_messages()
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                    };
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                    break Ok((messages, NetworkClientState::Idle));
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                }
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                Err(error) => break Err(error),
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            }
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        };
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        result
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    }
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    pub fn read(&mut self) -> NetworkResult<Vec<HwProtocolMessage>> {
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        match self.socket {
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            ClientSocket::Plain(ref mut stream) => {
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                NetworkClient::read_impl(&mut self.decoder, stream, self.id, &self.peer_addr)
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            }
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            #[cfg(feature = "tls-connections")]
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            ClientSocket::SslHandshake(ref mut handshake_opt) => {
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                let handshake = std::mem::replace(handshake_opt, None).unwrap();
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                Ok((Vec::new(), self.handshake_impl(handshake)?))
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            }
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            #[cfg(feature = "tls-connections")]
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            ClientSocket::SslStream(ref mut stream) => {
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                NetworkClient::read_impl(&mut self.decoder, stream, self.id, &self.peer_addr)
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            }
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        }
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    }
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    fn write_impl<W: Write>(
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        buf_out: &mut netbuf::Buf,
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        destination: &mut W,
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        close_on_empty: bool,
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    ) -> NetworkResult<()> {
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        let result = loop {
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            match buf_out.write_to(destination) {
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                Ok(bytes) if buf_out.is_empty() || bytes == 0 => {
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                    let status = if buf_out.is_empty() && close_on_empty {
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                        NetworkClientState::Closed
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                    } else {
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                        NetworkClientState::Idle
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                    };
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                    break Ok(((), status));
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                }
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                Ok(_) => (),
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                Err(ref error)
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                    if error.kind() == ErrorKind::Interrupted
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                        || error.kind() == ErrorKind::WouldBlock =>
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                {
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                    break Ok(((), NetworkClientState::NeedsWrite));
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                }
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                Err(error) => break Err(error),
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            }
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        };
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        result
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    }
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    pub fn write(&mut self) -> NetworkResult<()> {
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        let result = match self.socket {
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            ClientSocket::Plain(ref mut stream) => {
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                NetworkClient::write_impl(&mut self.buf_out, stream, self.pending_close)
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            }
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            #[cfg(feature = "tls-connections")]
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            ClientSocket::SslHandshake(ref mut handshake_opt) => {
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                let handshake = std::mem::replace(handshake_opt, None).unwrap();
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                Ok(((), self.handshake_impl(handshake)?))
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            }
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            #[cfg(feature = "tls-connections")]
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            ClientSocket::SslStream(ref mut stream) => {
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                NetworkClient::write_impl(&mut self.buf_out, stream, self.pending_close)
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            }
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        };
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        self.socket.inner().flush()?;
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        result
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    }
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    pub fn send_raw_msg(&mut self, msg: &[u8]) {
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        self.buf_out.write_all(msg).unwrap();
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    }
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    pub fn send_string(&mut self, msg: &str) {
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        self.send_raw_msg(&msg.as_bytes());
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    }
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    pub fn replace_timeout(&mut self, timeout: timer::Timeout) -> timer::Timeout {
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        replace(&mut self.timeout, timeout)
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    }
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    pub fn has_pending_sends(&self) -> bool {
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        !self.buf_out.is_empty()
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    }
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}
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#[cfg(feature = "tls-connections")]
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struct ServerSsl {
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    listener: TcpListener,
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    context: SslContext,
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}
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#[cfg(feature = "official-server")]
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pub struct IoLayer {
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    next_request_id: RequestId,
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    request_queue: Vec<(RequestId, ClientId)>,
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    io_thread: IoThread,
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}
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#[cfg(feature = "official-server")]
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impl IoLayer {
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    fn new() -> Self {
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        Self {
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            next_request_id: 0,
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            request_queue: vec![],
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            io_thread: IoThread::new(),
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        }
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    }
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    fn send(&mut self, client_id: ClientId, task: IoTask) {
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        let request_id = self.next_request_id;
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        self.next_request_id += 1;
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        self.request_queue.push((request_id, client_id));
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        self.io_thread.send(request_id, task);
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    }
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    fn try_recv(&mut self) -> Option<(ClientId, IoResult)> {
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        let (request_id, result) = self.io_thread.try_recv()?;
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        if let Some(index) = self
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            .request_queue
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            .iter()
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            .position(|(id, _)| *id == request_id)
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        {
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            let (_, client_id) = self.request_queue.swap_remove(index);
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            Some((client_id, result))
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        } else {
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            None
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        }
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    }
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    fn cancel(&mut self, client_id: ClientId) {
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        let mut index = 0;
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        while index < self.request_queue.len() {
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            if self.request_queue[index].1 == client_id {
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                self.request_queue.swap_remove(index);
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            } else {
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                index += 1;
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            }
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        }
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    }
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}
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enum TimeoutEvent {
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    SendPing { probes_count: u8 },
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    DropClient,
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}
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struct TimerData(TimeoutEvent, ClientId);
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pub struct NetworkLayer {
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    listener: TcpListener,
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    server: HwServer,
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    clients: Slab<NetworkClient>,
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    pending: HashSet<(ClientId, NetworkClientState)>,
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    pending_cache: Vec<(ClientId, NetworkClientState)>,
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    #[cfg(feature = "tls-connections")]
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    ssl: ServerSsl,
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    #[cfg(feature = "official-server")]
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    io: IoLayer,
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    timer: timer::Timer<TimerData>,
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}
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fn register_read<E: Evented>(poll: &Poll, evented: &E, token: mio::Token) -> io::Result<()> {
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    poll.register(evented, token, Ready::readable(), PollOpt::edge())
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}
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fn create_ping_timeout(
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    timer: &mut timer::Timer<TimerData>,
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    probes_count: u8,
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    client_id: ClientId,
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) -> timer::Timeout {
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    timer.set_timeout(
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   341
        SEND_PING_TIMEOUT,
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   342
        TimerData(TimeoutEvent::SendPing { probes_count }, client_id),
14803
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diff changeset
   343
    )
92225a708bda add client timeouts
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diff changeset
   344
}
92225a708bda add client timeouts
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diff changeset
   345
92225a708bda add client timeouts
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   346
fn create_drop_timeout(timer: &mut timer::Timer<TimerData>, client_id: ClientId) -> timer::Timeout {
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diff changeset
   347
    timer.set_timeout(
92225a708bda add client timeouts
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parents: 14796
diff changeset
   348
        DROP_CLIENT_TIMEOUT,
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diff changeset
   349
        TimerData(TimeoutEvent::DropClient, client_id),
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diff changeset
   350
    )
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parents:
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   351
}
1e39b8749072 separated the server logic from all the async io mess.
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   352
1e39b8749072 separated the server logic from all the async io mess.
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   353
impl NetworkLayer {
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
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   354
    pub fn register(&self, poll: &Poll) -> io::Result<()> {
8ddb5842fe0b allow running plaintext and tls servers in parallel
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diff changeset
   355
        register_read(poll, &self.listener, utils::SERVER_TOKEN)?;
8ddb5842fe0b allow running plaintext and tls servers in parallel
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diff changeset
   356
        #[cfg(feature = "tls-connections")]
14835
57ed3981db20 add redirect message
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diff changeset
   357
        register_read(poll, &self.ssl.listener, utils::SECURE_SERVER_TOKEN)?;
14830
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diff changeset
   358
        register_read(poll, &self.timer, utils::TIMER_TOKEN)?;
14803
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diff changeset
   359
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   360
        #[cfg(feature = "official-server")]
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
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parents: 14697
diff changeset
   361
        self.io.io_thread.register_rx(poll, utils::IO_TOKEN)?;
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diff changeset
   362
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
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parents: 14697
diff changeset
   363
        Ok(())
13119
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parents:
diff changeset
   364
    }
1e39b8749072 separated the server logic from all the async io mess.
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parents:
diff changeset
   365
15175
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   366
    fn deregister_client(&mut self, poll: &Poll, id: ClientId, is_error: bool) {
15174
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diff changeset
   367
        if let Some(ref mut client) = self.clients.get_mut(id) {
13799
c8fd12db6215 Add TLS support
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parents: 13666
diff changeset
   368
            poll.deregister(client.socket.inner())
13524
5359ff75da3a indulge clippy
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parents: 13478
diff changeset
   369
                .expect("could not deregister socket");
15175
f1c2289d40bd break error loop in client removal
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parents: 15174
diff changeset
   370
            if client.has_pending_sends() && !is_error {
15174
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alfadur
parents: 15173
diff changeset
   371
                info!(
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   372
                    "client {} ({}) pending removal",
e705ac360785 pin removed clients until the output buffer is flushed
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parents: 15173
diff changeset
   373
                    client.id, client.peer_addr
e705ac360785 pin removed clients until the output buffer is flushed
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parents: 15173
diff changeset
   374
                );
e705ac360785 pin removed clients until the output buffer is flushed
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parents: 15173
diff changeset
   375
                client.pending_close = true;
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   376
                poll.register(
e705ac360785 pin removed clients until the output buffer is flushed
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parents: 15173
diff changeset
   377
                    client.socket.inner(),
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   378
                    Token(id),
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   379
                    Ready::writable(),
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   380
                    PollOpt::edge(),
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   381
                )
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   382
                .unwrap_or_else(|_| {
e705ac360785 pin removed clients until the output buffer is flushed
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parents: 15173
diff changeset
   383
                    self.clients.remove(id);
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   384
                });
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   385
            } else {
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   386
                info!("client {} ({}) removed", client.id, client.peer_addr);
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   387
                self.clients.remove(id);
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   388
            }
14779
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
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parents: 14697
diff changeset
   389
            #[cfg(feature = "official-server")]
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   390
            self.io.cancel(id);
13119
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   391
        }
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   392
    }
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   393
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   394
    fn register_client(
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   395
        &mut self,
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   396
        poll: &Poll,
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   397
        client_socket: ClientSocket,
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   398
        addr: SocketAddr,
14916
8750530bf7e7 avoid crashing server in the event loop
alfadur
parents: 14907
diff changeset
   399
    ) -> io::Result<ClientId> {
14693
6a2e13e36b7f add server anteroom
alfadur <mail@none>
parents: 14673
diff changeset
   400
        let entry = self.clients.vacant_entry();
6a2e13e36b7f add server anteroom
alfadur <mail@none>
parents: 14673
diff changeset
   401
        let client_id = entry.key();
6a2e13e36b7f add server anteroom
alfadur <mail@none>
parents: 14673
diff changeset
   402
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   403
        poll.register(
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   404
            client_socket.inner(),
14693
6a2e13e36b7f add server anteroom
alfadur <mail@none>
parents: 14673
diff changeset
   405
            Token(client_id),
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   406
            Ready::readable() | Ready::writable(),
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   407
            PollOpt::edge(),
14916
8750530bf7e7 avoid crashing server in the event loop
alfadur
parents: 14907
diff changeset
   408
        )?;
13119
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   409
14803
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   410
        let client = NetworkClient::new(
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   411
            client_id,
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   412
            client_socket,
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   413
            addr,
14807
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   414
            create_ping_timeout(&mut self.timer, PING_PROBES_COUNT - 1, client_id),
14803
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   415
        );
13119
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   416
        info!("client {} ({}) added", client.id, client.peer_addr);
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   417
        entry.insert(client);
14693
6a2e13e36b7f add server anteroom
alfadur <mail@none>
parents: 14673
diff changeset
   418
14916
8750530bf7e7 avoid crashing server in the event loop
alfadur
parents: 14907
diff changeset
   419
        Ok(client_id)
13119
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   420
    }
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   421
14779
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   422
    fn handle_response(&mut self, mut response: handlers::Response, poll: &Poll) {
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   423
        if response.is_empty() {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   424
            return;
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   425
        }
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   426
14672
6e6632068a33 Server action refactoring part 3 of N
alfadur <mail@none>
parents: 14671
diff changeset
   427
        debug!("{} pending server messages", response.len());
6e6632068a33 Server action refactoring part 3 of N
alfadur <mail@none>
parents: 14671
diff changeset
   428
        let output = response.extract_messages(&mut self.server);
6e6632068a33 Server action refactoring part 3 of N
alfadur <mail@none>
parents: 14671
diff changeset
   429
        for (clients, message) in output {
13419
81e0ed105f5d implementation of team related messages
alfadur
parents: 13416
diff changeset
   430
            debug!("Message {:?} to {:?}", message, clients);
81e0ed105f5d implementation of team related messages
alfadur
parents: 13416
diff changeset
   431
            let msg_string = message.to_raw_protocol();
81e0ed105f5d implementation of team related messages
alfadur
parents: 13416
diff changeset
   432
            for client_id in clients {
81e0ed105f5d implementation of team related messages
alfadur
parents: 13416
diff changeset
   433
                if let Some(client) = self.clients.get_mut(client_id) {
81e0ed105f5d implementation of team related messages
alfadur
parents: 13416
diff changeset
   434
                    client.send_string(&msg_string);
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   435
                    self.pending
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   436
                        .insert((client_id, NetworkClientState::NeedsWrite));
13414
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   437
                }
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   438
            }
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   439
        }
14696
8a45c90f4580 fix client removal
alfadur
parents: 14693
diff changeset
   440
8a45c90f4580 fix client removal
alfadur
parents: 14693
diff changeset
   441
        for client_id in response.extract_removed_clients() {
15175
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   442
            self.deregister_client(poll, client_id, false);
14696
8a45c90f4580 fix client removal
alfadur
parents: 14693
diff changeset
   443
        }
14779
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   444
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   445
        #[cfg(feature = "official-server")]
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   446
        {
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   447
            let client_id = response.client_id();
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   448
            for task in response.extract_io_tasks() {
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   449
                self.io.send(client_id, task);
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   450
            }
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   451
        }
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   452
    }
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   453
14803
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   454
    pub fn handle_timeout(&mut self, poll: &Poll) -> io::Result<()> {
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   455
        while let Some(TimerData(event, client_id)) = self.timer.poll() {
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   456
            match event {
14807
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   457
                TimeoutEvent::SendPing { probes_count } => {
14803
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   458
                    if let Some(ref mut client) = self.clients.get_mut(client_id) {
15075
e935b1ad23f3 normalize type names
alfadur
parents: 15074
diff changeset
   459
                        client.send_string(&HwServerMessage::Ping.to_raw_protocol());
14803
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   460
                        client.write()?;
14807
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   461
                        let timeout = if probes_count != 0 {
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   462
                            create_ping_timeout(&mut self.timer, probes_count - 1, client_id)
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   463
                        } else {
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   464
                            create_drop_timeout(&mut self.timer, client_id)
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   465
                        };
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   466
                        client.replace_timeout(timeout);
14803
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   467
                    }
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   468
                }
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   469
                TimeoutEvent::DropClient => {
15175
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   470
                    if let Some(ref mut client) = self.clients.get_mut(client_id) {
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   471
                        client.send_string(
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   472
                            &HwServerMessage::Bye("Ping timeout".to_string()).to_raw_protocol(),
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   473
                        );
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   474
                        client.write();
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   475
                    }
14803
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   476
                    self.operation_failed(
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   477
                        poll,
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   478
                        client_id,
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   479
                        &ErrorKind::TimedOut.into(),
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   480
                        "No ping response",
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   481
                    )?;
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   482
                }
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   483
            }
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   484
        }
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   485
        Ok(())
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   486
    }
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   487
14779
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   488
    #[cfg(feature = "official-server")]
15102
80ff12edf5e6 handle response from IO result handler
alfadur
parents: 15098
diff changeset
   489
    pub fn handle_io_result(&mut self, poll: &Poll) -> io::Result<()> {
80ff12edf5e6 handle response from IO result handler
alfadur
parents: 15098
diff changeset
   490
        while let Some((client_id, result)) = self.io.try_recv() {
80ff12edf5e6 handle response from IO result handler
alfadur
parents: 15098
diff changeset
   491
            debug!("Handling io result {:?} for client {}", result, client_id);
14779
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   492
            let mut response = handlers::Response::new(client_id);
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   493
            handlers::handle_io_result(&mut self.server, client_id, &mut response, result);
15102
80ff12edf5e6 handle response from IO result handler
alfadur
parents: 15098
diff changeset
   494
            self.handle_response(response, poll);
14779
f43ab2bd76ae add a thread for internal server IO and implement account checking with it
alfadur
parents: 14697
diff changeset
   495
        }
14916
8750530bf7e7 avoid crashing server in the event loop
alfadur
parents: 14907
diff changeset
   496
        Ok(())
13414
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   497
    }
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   498
13799
c8fd12db6215 Add TLS support
alfadur
parents: 13666
diff changeset
   499
    fn create_client_socket(&self, socket: TcpStream) -> io::Result<ClientSocket> {
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   500
        Ok(ClientSocket::Plain(socket))
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   501
    }
13799
c8fd12db6215 Add TLS support
alfadur
parents: 13666
diff changeset
   502
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   503
    #[cfg(feature = "tls-connections")]
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   504
    fn create_client_secure_socket(&self, socket: TcpStream) -> io::Result<ClientSocket> {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   505
        let ssl = Ssl::new(&self.ssl.context).unwrap();
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   506
        let mut builder = SslStreamBuilder::new(ssl, socket);
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   507
        builder.set_accept_state();
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   508
        match builder.handshake() {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   509
            Ok(stream) => Ok(ClientSocket::SslStream(stream)),
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   510
            Err(HandshakeError::WouldBlock(stream)) => Ok(ClientSocket::SslHandshake(Some(stream))),
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   511
            Err(e) => {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   512
                debug!("OpenSSL handshake failed: {}", e);
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   513
                Err(Error::new(ErrorKind::Other, "Connection failure"))
13799
c8fd12db6215 Add TLS support
alfadur
parents: 13666
diff changeset
   514
            }
c8fd12db6215 Add TLS support
alfadur
parents: 13666
diff changeset
   515
        }
c8fd12db6215 Add TLS support
alfadur
parents: 13666
diff changeset
   516
    }
c8fd12db6215 Add TLS support
alfadur
parents: 13666
diff changeset
   517
14835
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   518
    fn init_client(&mut self, poll: &Poll, client_id: ClientId) {
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   519
        let mut response = handlers::Response::new(client_id);
14847
eef1f76150fe don't redirect to self
alfadur
parents: 14835
diff changeset
   520
eef1f76150fe don't redirect to self
alfadur
parents: 14835
diff changeset
   521
        if let ClientSocket::Plain(_) = self.clients[client_id].socket {
eef1f76150fe don't redirect to self
alfadur
parents: 14835
diff changeset
   522
            #[cfg(feature = "tls-connections")]
eef1f76150fe don't redirect to self
alfadur
parents: 14835
diff changeset
   523
            response.add(Redirect(self.ssl.listener.local_addr().unwrap().port()).send_self())
eef1f76150fe don't redirect to self
alfadur
parents: 14835
diff changeset
   524
        }
14835
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   525
15176
f6115638aa92 enable local admins for non-official servers
alfadur
parents: 15175
diff changeset
   526
        handlers::handle_client_accept(
f6115638aa92 enable local admins for non-official servers
alfadur
parents: 15175
diff changeset
   527
            &mut self.server,
f6115638aa92 enable local admins for non-official servers
alfadur
parents: 15175
diff changeset
   528
            client_id,
f6115638aa92 enable local admins for non-official servers
alfadur
parents: 15175
diff changeset
   529
            &mut response,
f6115638aa92 enable local admins for non-official servers
alfadur
parents: 15175
diff changeset
   530
            self.clients[client_id].peer_addr.ip().is_loopback(),
f6115638aa92 enable local admins for non-official servers
alfadur
parents: 15175
diff changeset
   531
        );
14835
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   532
        self.handle_response(response, poll);
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   533
    }
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   534
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   535
    pub fn accept_client(&mut self, poll: &Poll, server_token: mio::Token) -> io::Result<()> {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   536
        match server_token {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   537
            utils::SERVER_TOKEN => {
14870
ce98c37826a7 fix accepting on wrong server socket
alfadur
parents: 14847
diff changeset
   538
                let (client_socket, addr) = self.listener.accept()?;
ce98c37826a7 fix accepting on wrong server socket
alfadur
parents: 14847
diff changeset
   539
                info!("Connected(plaintext): {}", addr);
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   540
                let client_id =
14916
8750530bf7e7 avoid crashing server in the event loop
alfadur
parents: 14907
diff changeset
   541
                    self.register_client(poll, self.create_client_socket(client_socket)?, addr)?;
14835
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   542
                self.init_client(poll, client_id);
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   543
            }
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   544
            #[cfg(feature = "tls-connections")]
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   545
            utils::SECURE_SERVER_TOKEN => {
14870
ce98c37826a7 fix accepting on wrong server socket
alfadur
parents: 14847
diff changeset
   546
                let (client_socket, addr) = self.ssl.listener.accept()?;
ce98c37826a7 fix accepting on wrong server socket
alfadur
parents: 14847
diff changeset
   547
                info!("Connected(TLS): {}", addr);
14916
8750530bf7e7 avoid crashing server in the event loop
alfadur
parents: 14907
diff changeset
   548
                self.register_client(poll, self.create_client_secure_socket(client_socket)?, addr)?;
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   549
            }
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   550
            _ => unreachable!(),
14693
6a2e13e36b7f add server anteroom
alfadur <mail@none>
parents: 14673
diff changeset
   551
        }
13119
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   552
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   553
        Ok(())
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   554
    }
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   555
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   556
    fn operation_failed(
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   557
        &mut self,
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   558
        poll: &Poll,
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   559
        client_id: ClientId,
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   560
        error: &Error,
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   561
        msg: &str,
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   562
    ) -> io::Result<()> {
13414
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   563
        let addr = if let Some(ref mut client) = self.clients.get_mut(client_id) {
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   564
            client.peer_addr
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   565
        } else {
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   566
            SocketAddr::new(IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0)), 0)
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   567
        };
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   568
        debug!("{}({}): {}", msg, addr, error);
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   569
        self.client_error(poll, client_id)
13119
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   570
    }
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   571
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   572
    pub fn client_readable(&mut self, poll: &Poll, client_id: ClientId) -> io::Result<()> {
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   573
        let messages = if let Some(ref mut client) = self.clients.get_mut(client_id) {
14807
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   574
            let timeout = client.replace_timeout(create_ping_timeout(
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   575
                &mut self.timer,
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   576
                PING_PROBES_COUNT - 1,
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   577
                client_id,
b2beb784e4b5 add support for multiple ping probes
alfadur
parents: 14803
diff changeset
   578
            ));
14803
92225a708bda add client timeouts
alfadur
parents: 14796
diff changeset
   579
            self.timer.cancel_timeout(&timeout);
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   580
            client.read()
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   581
        } else {
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   582
            warn!("invalid readable client: {}", client_id);
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   583
            Ok((Vec::new(), NetworkClientState::Idle))
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   584
        };
13414
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   585
14671
455865ccd36c Server action refactoring part 2 of N
alfadur <mail@none>
parents: 14457
diff changeset
   586
        let mut response = handlers::Response::new(client_id);
455865ccd36c Server action refactoring part 2 of N
alfadur <mail@none>
parents: 14457
diff changeset
   587
13414
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   588
        match messages {
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   589
            Ok((messages, state)) => {
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   590
                for message in messages {
14671
455865ccd36c Server action refactoring part 2 of N
alfadur <mail@none>
parents: 14457
diff changeset
   591
                    debug!("Handling message {:?} for client {}", message, client_id);
14796
f5d43f007970 start by actually handling client messages
alfadur
parents: 14795
diff changeset
   592
                    handlers::handle(&mut self.server, client_id, &mut response, message);
13414
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   593
                }
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   594
                match state {
13415
0eedc17055a0 rework of prior
alfadur
parents: 13414
diff changeset
   595
                    NetworkClientState::NeedsRead => {
0eedc17055a0 rework of prior
alfadur
parents: 13414
diff changeset
   596
                        self.pending.insert((client_id, state));
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   597
                    }
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   598
                    NetworkClientState::Closed => self.client_error(&poll, client_id)?,
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   599
                    #[cfg(feature = "tls-connections")]
14835
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   600
                    NetworkClientState::Connected => self.init_client(poll, client_id),
13414
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   601
                    _ => {}
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   602
                };
13119
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   603
            }
13414
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   604
            Err(e) => self.operation_failed(
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   605
                poll,
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   606
                client_id,
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   607
                &e,
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   608
                "Error while reading from client socket",
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   609
            )?,
13119
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   610
        }
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   611
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   612
        self.handle_response(response, poll);
13119
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   613
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   614
        Ok(())
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   615
    }
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   616
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   617
    pub fn client_writable(&mut self, poll: &Poll, client_id: ClientId) -> io::Result<()> {
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   618
        let result = if let Some(ref mut client) = self.clients.get_mut(client_id) {
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   619
            client.write()
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   620
        } else {
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   621
            warn!("invalid writable client: {}", client_id);
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   622
            Ok(((), NetworkClientState::Idle))
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   623
        };
13414
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   624
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   625
        match result {
13415
0eedc17055a0 rework of prior
alfadur
parents: 13414
diff changeset
   626
            Ok(((), state)) if state == NetworkClientState::NeedsWrite => {
0eedc17055a0 rework of prior
alfadur
parents: 13414
diff changeset
   627
                self.pending.insert((client_id, state));
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   628
            }
15174
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   629
            Ok(((), state)) if state == NetworkClientState::Closed => {
15175
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   630
                self.deregister_client(poll, client_id, false);
15174
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   631
            }
e705ac360785 pin removed clients until the output buffer is flushed
alfadur
parents: 15173
diff changeset
   632
            Ok(_) => (),
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   633
            Err(e) => {
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   634
                self.operation_failed(poll, client_id, &e, "Error while writing to client socket")?
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   635
            }
13119
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   636
        }
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   637
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   638
        Ok(())
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   639
    }
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   640
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   641
    pub fn client_error(&mut self, poll: &Poll, client_id: ClientId) -> io::Result<()> {
15175
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   642
        let pending_close = self.clients[client_id].pending_close;
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   643
        self.deregister_client(poll, client_id, true);
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   644
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   645
        if !pending_close {
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   646
            let mut response = handlers::Response::new(client_id);
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   647
            handlers::handle_client_loss(&mut self.server, client_id, &mut response);
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   648
            self.handle_response(response, poll);
f1c2289d40bd break error loop in client removal
alfadur
parents: 15174
diff changeset
   649
        }
13119
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   650
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   651
        Ok(())
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   652
    }
13414
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   653
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   654
    pub fn has_pending_operations(&self) -> bool {
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   655
        !self.pending.is_empty()
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   656
    }
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   657
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   658
    pub fn on_idle(&mut self, poll: &Poll) -> io::Result<()> {
13415
0eedc17055a0 rework of prior
alfadur
parents: 13414
diff changeset
   659
        if self.has_pending_operations() {
13478
d79795acaa73 Mostly implement voting
alfadur
parents: 13419
diff changeset
   660
            let mut cache = replace(&mut self.pending_cache, Vec::new());
13415
0eedc17055a0 rework of prior
alfadur
parents: 13414
diff changeset
   661
            cache.extend(self.pending.drain());
0eedc17055a0 rework of prior
alfadur
parents: 13414
diff changeset
   662
            for (id, state) in cache.drain(..) {
0eedc17055a0 rework of prior
alfadur
parents: 13414
diff changeset
   663
                match state {
14457
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   664
                    NetworkClientState::NeedsRead => self.client_readable(poll, id)?,
98ef2913ec73 Apply rustfmt to all files
unc0rr
parents: 14415
diff changeset
   665
                    NetworkClientState::NeedsWrite => self.client_writable(poll, id)?,
13415
0eedc17055a0 rework of prior
alfadur
parents: 13414
diff changeset
   666
                    _ => {}
0eedc17055a0 rework of prior
alfadur
parents: 13414
diff changeset
   667
                }
13414
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   668
            }
13415
0eedc17055a0 rework of prior
alfadur
parents: 13414
diff changeset
   669
            swap(&mut cache, &mut self.pending_cache);
13414
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   670
        }
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   671
        Ok(())
28b314ad566d handle edge polling properly
alfadur
parents: 13119
diff changeset
   672
    }
13119
1e39b8749072 separated the server logic from all the async io mess.
alfadur
parents:
diff changeset
   673
}
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   674
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   675
pub struct NetworkLayerBuilder {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   676
    listener: Option<TcpListener>,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   677
    secure_listener: Option<TcpListener>,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   678
    clients_capacity: usize,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   679
    rooms_capacity: usize,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   680
}
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   681
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   682
impl Default for NetworkLayerBuilder {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   683
    fn default() -> Self {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   684
        Self {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   685
            clients_capacity: 1024,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   686
            rooms_capacity: 512,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   687
            listener: None,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   688
            secure_listener: None,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   689
        }
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   690
    }
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   691
}
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   692
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   693
impl NetworkLayerBuilder {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   694
    pub fn with_listener(self, listener: TcpListener) -> Self {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   695
        Self {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   696
            listener: Some(listener),
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   697
            ..self
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   698
        }
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   699
    }
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   700
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   701
    pub fn with_secure_listener(self, listener: TcpListener) -> Self {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   702
        Self {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   703
            secure_listener: Some(listener),
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   704
            ..self
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   705
        }
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   706
    }
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   707
14835
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   708
    #[cfg(feature = "tls-connections")]
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   709
    fn create_ssl_context(listener: TcpListener) -> ServerSsl {
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   710
        let mut builder = SslContextBuilder::new(SslMethod::tls()).unwrap();
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   711
        builder.set_verify(SslVerifyMode::NONE);
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   712
        builder.set_read_ahead(true);
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   713
        builder
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   714
            .set_certificate_file("ssl/cert.pem", SslFiletype::PEM)
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   715
            .expect("Cannot find certificate file");
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   716
        builder
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   717
            .set_private_key_file("ssl/key.pem", SslFiletype::PEM)
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   718
            .expect("Cannot find private key file");
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   719
        builder.set_options(SslOptions::NO_COMPRESSION);
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   720
        builder.set_cipher_list("DEFAULT:!LOW:!RC4:!EXP").unwrap();
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   721
        ServerSsl {
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   722
            listener,
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   723
            context: builder.build(),
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   724
        }
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   725
    }
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   726
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   727
    pub fn build(self) -> NetworkLayer {
15075
e935b1ad23f3 normalize type names
alfadur
parents: 15074
diff changeset
   728
        let server = HwServer::new(self.clients_capacity, self.rooms_capacity);
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   729
        let clients = Slab::with_capacity(self.clients_capacity);
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   730
        let pending = HashSet::with_capacity(2 * self.clients_capacity);
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   731
        let pending_cache = Vec::with_capacity(2 * self.clients_capacity);
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   732
        let timer = timer::Builder::default().build();
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   733
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   734
        NetworkLayer {
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   735
            listener: self.listener.expect("No listener provided"),
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   736
            server,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   737
            clients,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   738
            pending,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   739
            pending_cache,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   740
            #[cfg(feature = "tls-connections")]
14835
57ed3981db20 add redirect message
alfadur
parents: 14830
diff changeset
   741
            ssl: Self::create_ssl_context(
14830
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   742
                self.secure_listener.expect("No secure listener provided"),
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   743
            ),
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   744
            #[cfg(feature = "official-server")]
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   745
            io: IoLayer::new(),
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   746
            timer,
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   747
        }
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   748
    }
8ddb5842fe0b allow running plaintext and tls servers in parallel
alfadur
parents: 14807
diff changeset
   749
}