1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
use anyhow::Result;
use clap::Parser;
use log::{debug, info};
use std::{
collections::HashMap,
io::{BufReader, BufWriter, Write},
net::{IpAddr, TcpListener, TcpStream},
sync::{
Arc, Mutex,
mpsc::{Receiver, Sender, channel},
},
thread::spawn,
};
use weareshared::{packets::Packet, store::ResourceStore, tree::SceneTree};
#[derive(Parser, Debug)]
struct Args {
#[arg(short, long, default_value = "::0")]
bind_addr: IpAddr,
#[arg(short, long, default_value = "28555")]
port: u16,
}
struct State {
tx: HashMap<usize, Sender<Packet>>,
store: ResourceStore,
tree: SceneTree,
}
fn main() -> Result<()> {
env_logger::init_from_env("LOG");
let args = Args::parse();
let listener = TcpListener::bind((args.bind_addr, args.port))?;
info!("bound to {}", listener.local_addr()?);
let state = Arc::new(Mutex::new(State::new()?));
for conn in 0.. {
let (sock, addr) = listener.accept()?;
info!("{addr} connected");
let (tx, rx) = channel();
let state2 = state.clone();
let sock2 = sock.try_clone().unwrap();
spawn(move || {
for p in state2.lock().unwrap().tree.prime_client() {
tx.send(p).unwrap();
}
state2.lock().unwrap().tx.insert(conn, tx);
let _ = handle_conn_read(conn, sock, state2.clone());
info!("{addr} disconnected");
state2.lock().unwrap().tx.remove(&conn);
});
spawn(move || {
let _ = handle_conn_write(conn, sock2, rx);
});
}
Ok(())
}
fn handle_conn_read(conn: usize, sock: TcpStream, state: Arc<Mutex<State>>) -> Result<()> {
let mut sock = BufReader::new(sock);
loop {
let packet = Packet::deserialize(&mut sock)?;
debug!("{conn} <- {packet:?}");
state.lock().unwrap().handle_packet(conn, packet)?;
}
}
fn handle_conn_write(conn: usize, sock: TcpStream, rx: Receiver<Packet>) -> Result<()> {
let mut sock = BufWriter::new(sock);
for packet in rx {
debug!("{conn} -> {packet:?}");
packet.serialize(&mut sock)?;
sock.flush()?;
}
Ok(())
}
impl State {
pub fn new() -> Result<Self> {
Ok(Self {
tx: HashMap::new(),
store: ResourceStore::new_persistent(
&xdg::BaseDirectories::with_prefix("weareserver")?.place_cache_file("resources")?,
)?,
tree: SceneTree::default(),
})
}
pub fn broadcast(&self, packet: Packet) -> Result<()> {
for tx in self.tx.values() {
tx.send(packet.clone())?;
}
Ok(())
}
pub fn send(&self, conn: usize, packet: Packet) -> Result<()> {
if let Some(tx) = self.tx.get(&conn) {
tx.send(packet)?;
}
Ok(())
}
pub fn handle_packet(&mut self, conn: usize, packet: Packet) -> Result<()> {
self.tree.update(&packet);
match packet {
Packet::RequestResource(resource) => {
if let Some(r) = self.store.get(resource)? {
self.send(conn, Packet::RespondResource(r))?;
} else {
self.broadcast(Packet::RequestResource(resource))?;
}
}
Packet::RespondResource(data) => {
self.store.set(&data)?;
self.broadcast(Packet::RespondResource(data))?;
}
Packet::Add(object, resource) => {
self.broadcast(Packet::Add(object, resource))?;
}
Packet::Remove(object) => {
self.broadcast(Packet::Remove(object))?;
}
Packet::Position(object, pos, rot) => {
self.broadcast(Packet::Position(object, pos, rot))?;
}
Packet::Pose(object, vec) => {
self.broadcast(Packet::Pose(object, vec))?;
}
Packet::Parent(parent, child) => {
self.broadcast(Packet::Parent(parent, child))?;
}
Packet::Sound(object, vec) => {
self.broadcast(Packet::Sound(object, vec))?;
}
}
Ok(())
}
}
|
