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use mio::net::{TcpListener, TcpStream};
use std::io::{Read, Write};
use mio::{Poll, Token, Ready, PollOpt, Events};
use std::collections::HashMap;
use std::str::from_utf8;
use crate::sub::buddy_list::create_buddy_list_notify_command;
use crate::sub::text::create_text_command;
use crate::sub::property::{create_property_update_command, create_property_request_command};
pub struct WorldServer;
impl WorldServer {
pub fn new(listener: TcpListener) {
let poll = Poll::new().unwrap();
poll.register(
&listener,
Token(0),
Ready::readable(),
PollOpt::edge()
).unwrap();
let mut counter: usize = 0;
let mut sockets: HashMap<Token, TcpStream> = HashMap::new();
let mut requests: HashMap<Token, Vec<u8>> = HashMap::new();
let mut buffer = [0 as u8; 1024];
let mut events = Events::with_capacity(1024);
loop {
poll.poll(&mut events, None).unwrap();
for event in &events {
match event.token() {
Token(0) => {
loop {
match listener.accept() {
Ok((socket, address)) => {
counter += 1;
let token = Token(counter);
poll.register(
&socket,
token,
Ready::readable(),
PollOpt::edge()
).unwrap();
info!(
"registered ip '{}' with token '{}'",
address.ip(), token.0
);
sockets.insert(token, socket);
requests.insert(token, Vec::with_capacity(192));
}
Err(ref e) if e.kind() == std::io::ErrorKind::WouldBlock =>
break,
Err(e) => { error!("unexpected error: {}", e); break }
}
}
},
token if event.readiness().is_readable() => {
loop {
let read = sockets.get_mut(&token).unwrap().read(&mut buffer);
match read {
Ok(0) => { sockets.remove(&token); break; }
Ok(n) => {
let req = requests.get_mut(&token).unwrap();
for b in &buffer[0..n] {
req.push(*b);
}
// First byte means how long data section of the packet is.
// Second byte is to be determined.
// Third byte is the request type.
// Match packet type by descriptor; **third** byte.
match &buffer.get(2).unwrap() { // Third byte is 2 because Rust is zero-indexed.
// PROPREQ
10 => {
info!("received property request command");
sockets.get_mut(&token)
.unwrap()
.write_all(&create_property_update_command())
.unwrap();
info!("sent property update");
}
// SESSINIT
6 => {
info!("received session initialization command");
sockets.get_mut(&token)
.unwrap()
.write_all(&create_property_request_command())
.unwrap();
info!("sent session initialization command")
}
// PROPSET
15 => info!("received property set command"),
// BUDDYLISTUPDATE
29 => {
info!("received buddy list update command");
sockets.get_mut(&token)
.unwrap()
.write_all(&create_buddy_list_notify_command("Wirlaburla"))
.unwrap();
info!("sent buddy notify update command")
}
// ROOMIDRQ
20 => info!("received room id request command"),
// TEXT
14 => {
info!("received text command");
// TODO: Make this into a command!
let message = from_utf8(
&buffer[6..*&buffer.get(0).unwrap().to_owned() as usize]
).unwrap();
info!("message: {}", message);
for mut socket in &sockets {
socket.1.write_all(&create_text_command(message)).unwrap();
}
}
// SESSEXIT
7 => {
info!("received session termination command");
poll.deregister(sockets.get(&token).unwrap()).unwrap();
info!("de-registered client: {}", token.0);
}
// Anything else, do nothing.
_ => ()
}
}
Err(ref e) if e.kind() == std::io::ErrorKind::WouldBlock =>
break,
Err(e) => { error!("unexpected error: {}", e); break; }
}
}
// Unimplemented
// let ready = requests.get(&token).unwrap()
// .windows(4)
// .find(|window| is_double_crnl(*window))
// .is_some();
//
// if ready {
// let socket = sockets.get(&token).unwrap();
// poll.reregister(
// socket,
// token,
// Ready::writable(),
// PollOpt::edge() | PollOpt::oneshot()).unwrap();
// }
},
// Unimplemented
// token if event.readiness().is_writable() => {
// println!("writeable");
// requests.get_mut(&token).unwrap().clear();
// sockets.get_mut(&token).unwrap().write_all("test".as_bytes()).unwrap();
//
// // Re-use existing connection ("keep-alive") - switch back to reading
// poll.reregister(
// sockets.get(&token).unwrap(),
// token,
// Ready::readable(),
// PollOpt::edge()).unwrap();
// },
_ => ()
}
}
}
}
}
|