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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
use crate::types::*;
use std::{
net::SocketAddr,
convert::Infallible,
pin::Pin,
task::Poll,
};
use hyper::{ Request, Response, Body, service::Service };
use hyper_tungstenite::{
HyperWebsocket,
tungstenite::Message,
};
use futures::{
Future,
SinkExt,
StreamExt,
TryStreamExt,
TryFuture,
TryFutureExt,
channel::mpsc::unbounded,
pin_mut,
};
const FONT_FILE: &[u8] = include_bytes!("./VT323-Regular.ttf");
#[derive(Clone)]
pub struct PerConnHandler {
pub state: State,
pub local_addr: SocketAddr,
pub remote_addr: SocketAddr,
pub game_cmd_tx: MovReqTx,
pub page: String,
}
impl PerConnHandler {
async fn handle_req(self, req: Request<Body>)
-> std::result::Result<Response<Body>, Infallible>
{
if hyper_tungstenite::is_upgrade_request(&req) {
let (resp, wsocket) = hyper_tungstenite::upgrade(req, None).expect("couldn't upgrade to websocket");
tokio::spawn(async move {
peer_connection(self, wsocket).await;
});
return Ok(resp);
}
//let page = tokio::fs::read_to_string(self.page).await.map_err(errpage)?;
let mut uri_path = req.uri().path().split('/').skip(1);
let actual_path = uri_path.next();
use hyper::{ Method, StatusCode };
match (req.method(), actual_path) {
(&Method::GET, None | Some("")) => {
Ok(Response::builder()
.status(StatusCode::OK)
.body(Body::from(self.page))
.unwrap())
},
(&Method::GET, Some("font.ttf")) => {
Ok(Response::builder()
.status(StatusCode::OK)
.body(Body::from(FONT_FILE))
.unwrap())
},
_ => {
Ok(Response::builder()
.status(StatusCode::NOT_FOUND)
.body(Body::empty())
.unwrap())
}
}
}
}
impl Service<Request<Body>> for PerConnHandler
{
type Response = Response<Body>;
type Error = Infallible;
type Future = Pin<Box<dyn Future<Output = std::result::Result<Self::Response,Self::Error>> + Send>>;
fn poll_ready(&mut self, _cx: &mut std::task::Context<'_>) -> Poll<Result<(), Self::Error>> {
Poll::Ready(Ok(()))
}
fn call(&mut self, req: Request<Body>) -> Self::Future {
let cloned_self = self.clone();
Box::pin(cloned_self.handle_req(req))
}
}
pub async fn peer_connection(conn: PerConnHandler, socket: HyperWebsocket) {
let socket = socket.await.expect("couldn't finish websocket connection");
let addr = conn.remote_addr;
let peers = &conn.state.peers;
let mut cmd_tx = &conn.game_cmd_tx;
println!("Incoming TCP connection from: {addr}");
let mut peer_name = "unknown".to_string();
// for game -> conn comms
let (tx, rx) = unbounded();
// for server -> client comms
let (outgoing, mut incoming) = socket.split();
let process_incoming = async {
while let Ok(cmd) = incoming.try_next().await {
if let Some(cmd) = cmd {
if cmd.is_close() {
println!("closing \"{peer_name}\"@{addr}");
let mut peers = peers.write().await;
if let Some(_) = peers.get(&addr) {
peers.remove(&addr);
}
for (paddr, p) in peers.iter() {
if let Err(e) = tx.unbounded_send(Message::text("logoff {p.seqid} {p.name}")) {
println!("couldn't deliver logoff info to \"{}\"@{}: {}", p.name, paddr, e);
}
}
break;
}
// if it ain't text we can't handle it
if !cmd.is_text() { continue; }
let cmd = cmd.to_text().unwrap();
let mut fields = cmd.split(" ");
let parse_pos = |mut fields: std::str::Split<&str>| -> Option<(usize, usize)> {
let x = fields.next().and_then(|xstr| xstr.parse::<usize>().ok());
let y = fields.next().and_then(|ystr| ystr.parse::<usize>().ok());
x.zip(y)
};
if let Some(cmd_name) = fields.next() {
use crate::minesweeper::{Move,MoveType};
match cmd_name {
"pos" => {
match parse_pos(fields) {
Some(pos) => {
let (name, id) = {
let mut peers = peers.write().await;
let mut entry = peers.get_mut(&addr).unwrap();
entry.position = pos.clone();
(entry.name.clone(), entry.seq_id)
};
let sanitized_name = name.replace(" ", " ").to_string();
{
let peers = peers.read().await;
for peer_tx in peers.iter().filter(|(s, _)| **s != addr).map(|(_,p)| &p.tx) {
let r = peer_tx.unbounded_send(Message::text(format!("pos {id} {sanitized_name} {} {}", pos.0, pos.1)));
if let Err(e) = r {
println!("error sending pos update: {e}");
}
}
}
},
None => {
println!("bad position update from \"{peer_name}@{addr}\"");
},
}
},
"reveal" => {
match parse_pos(fields) {
Some(pos) => {
println!("{cmd} from \"{peer_name}\"@{addr}");
if let Err(e) = cmd_tx.send(MetaMove::Move(Move { t: MoveType::Reveal, pos }, addr)).await {
println!("couldn't process \"{peer_name}\"'s reveal command: {e}");
};
},
None => {
println!("bad reveal from \"{peer_name}\"@{addr}");
}
}
},
"flag" => {
match parse_pos(fields) {
Some(pos) => {
println!("{cmd} from \"{peer_name}\"@{addr}");
if let Err(e) = cmd_tx.send(MetaMove::Move(Move { t: MoveType::ToggleFlag, pos }, addr)).await {
println!("couldn't process \"{peer_name}\"'s flag command: {e}");
};
},
None => {
println!("bad flag from \"{peer_name}\"@{addr}");
}
}
},
"reset" => {
println!("{cmd} from \"{peer_name}\"@{addr}");
if let Err(e) = cmd_tx.send(MetaMove::Reset).await {
println!("couldn't send game dump to \"{peer_name}\"@{addr}: {e}");
}
},
"register" => {
let name = fields.collect::<Vec<&str>>().join(&" ");
let id;
if name.is_empty() {
peer_name = "anon".to_string();
} else {
peer_name = name;
}
{ // new scope cuz paranoid bout deadlocks
let mut peers = peers.write().await;
id = peers.len();
peers.insert(addr, Peer {
tx: tx.clone(),
seq_id: id,
name: peer_name.clone(),
position: (0,0)
});
}
tx.unbounded_send(Message::text(format!("id {id}"))).unwrap();
if let Err(e) = cmd_tx.send(MetaMove::Dump).await {
println!("couldn't send game dump to \"{peer_name}\"@{addr}: {e}");
}
},
e => println!("unknown command {e:?} from {peer_name}@{addr}, \"{cmd}\""),
}
}
}
}
};
let send_to_browser = rx.map(Ok).forward(outgoing);
pin_mut!(process_incoming, send_to_browser);
futures_util::future::select(process_incoming, send_to_browser).await;
println!("{addr} disconnected");
peers.write().await.remove(&addr);
}
|
