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"winapi-x86_64-pc-windows-gnu",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "winapi-i686-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||
|
||||
[[package]]
|
||||
name = "winapi-x86_64-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||
|
||||
[[package]]
|
||||
name = "windows-sys"
|
||||
version = "0.42.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7"
|
||||
dependencies = [
|
||||
"windows_aarch64_gnullvm",
|
||||
"windows_aarch64_msvc",
|
||||
"windows_i686_gnu",
|
||||
"windows_i686_msvc",
|
||||
"windows_x86_64_gnu",
|
||||
"windows_x86_64_gnullvm",
|
||||
"windows_x86_64_msvc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-sys"
|
||||
version = "0.45.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "75283be5efb2831d37ea142365f009c02ec203cd29a3ebecbc093d52315b66d0"
|
||||
dependencies = [
|
||||
"windows-targets",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-targets"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8e5180c00cd44c9b1c88adb3693291f1cd93605ded80c250a75d472756b4d071"
|
||||
dependencies = [
|
||||
"windows_aarch64_gnullvm",
|
||||
"windows_aarch64_msvc",
|
||||
"windows_i686_gnu",
|
||||
"windows_i686_msvc",
|
||||
"windows_x86_64_gnu",
|
||||
"windows_x86_64_gnullvm",
|
||||
"windows_x86_64_msvc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_gnullvm"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_msvc"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnullvm"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
|
||||
|
|
|
|||
|
|
@ -1,5 +1,6 @@
|
|||
[workspace]
|
||||
members = [
|
||||
"server",
|
||||
"client"
|
||||
"client",
|
||||
"protocol"
|
||||
]
|
||||
4
justfile
4
justfile
|
|
@ -1,5 +1,5 @@
|
|||
run_server:
|
||||
@echo "[run_server] Starting server..."
|
||||
run_server: build_client_bundle
|
||||
cargo run --bin server
|
||||
|
||||
build_client_bundle:
|
||||
rm -rf web/dist
|
||||
|
|
|
|||
|
|
@ -0,0 +1,10 @@
|
|||
[package]
|
||||
name = "protocol"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[dependencies]
|
||||
serde = { version = "1", features = ["derive"] }
|
||||
rmp-serde = "1.1"
|
||||
|
|
@ -0,0 +1,51 @@
|
|||
use serde::{Serialize, Deserialize};
|
||||
|
||||
pub const PROTOCOL_VERSION: u32 = 1;
|
||||
|
||||
#[derive(Serialize, Deserialize, Debug, Clone)]
|
||||
pub enum State {
|
||||
Handshake,
|
||||
Play
|
||||
}
|
||||
|
||||
#[derive(Serialize, Deserialize, Debug, Clone)]
|
||||
pub enum MessageC2S {
|
||||
Hello {
|
||||
version: u32,
|
||||
requested_username: String,
|
||||
next_state: State
|
||||
},
|
||||
|
||||
Goodbye {
|
||||
reason: GoodbyeReason
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Serialize, Deserialize, Debug, Clone)]
|
||||
pub enum MessageS2C {
|
||||
Hello {
|
||||
version: u32,
|
||||
given_username: String,
|
||||
next_state: State
|
||||
},
|
||||
|
||||
Goodbye {
|
||||
reason: GoodbyeReason
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Serialize, Deserialize, Debug, Clone)]
|
||||
pub enum GoodbyeReason {
|
||||
UnsupportedProtocol { supported: u32, got: u32 },
|
||||
UnexpectedPacket,
|
||||
UnexpectedNextState,
|
||||
UsernameTaken,
|
||||
Done
|
||||
}
|
||||
|
||||
pub fn pc2s(pkt: &MessageC2S) -> Vec<u8> {
|
||||
rmp_serde::to_vec(pkt).unwrap()
|
||||
}
|
||||
pub fn ps2c(pkt: &MessageS2C) -> Vec<u8> {
|
||||
rmp_serde::to_vec(pkt).unwrap()
|
||||
}
|
||||
|
|
@ -6,3 +6,13 @@ edition = "2021"
|
|||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[dependencies]
|
||||
tokio = { version = "1.27", features = ["macros", "sync", "rt-multi-thread"] }
|
||||
serde = { version = "1", features = ["derive"] }
|
||||
rmp-serde = { version = "1" }
|
||||
futures = { version = "0.3", default-features = false }
|
||||
hyper = { version = "0.14", features = ["server", "http1", "http2", "tcp"] }
|
||||
tungstenite = { version = "0.18", default-features = false }
|
||||
tokio-tungstenite = { version = "0.18" }
|
||||
log = "0.4"
|
||||
simple_logger = "4.1"
|
||||
protocol = { version = "0.1.0", path = "../protocol" }
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
use std::collections::HashMap;
|
||||
use std::net::SocketAddr;
|
||||
use std::sync::Arc;
|
||||
use tokio::sync::mpsc::Sender;
|
||||
use tokio::sync::RwLock;
|
||||
use protocol::State;
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct ClientManager {
|
||||
pub clients: Arc<RwLock<HashMap<SocketAddr, ClientHandler>>>,
|
||||
pub usernames: Arc<RwLock<HashMap<SocketAddr, String>>>
|
||||
}
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct ClientHandler {
|
||||
pub tx: Sender<ClientHandlerMessage>
|
||||
}
|
||||
|
||||
pub enum ClientHandlerMessage {
|
||||
Tick
|
||||
}
|
||||
|
|
@ -1,3 +1,133 @@
|
|||
fn main() {
|
||||
println!("Hello, world!");
|
||||
use std::convert::Infallible;
|
||||
use std::net::SocketAddr;
|
||||
use std::sync::Arc;
|
||||
use hyper::{header, upgrade, StatusCode, Body, Request, Response, Server, server::conn::AddrStream};
|
||||
use hyper::service::{make_service_fn, service_fn};
|
||||
use tokio_tungstenite::WebSocketStream;
|
||||
use tungstenite::{handshake, Error};
|
||||
use futures::stream::StreamExt;
|
||||
use log::{error, info};
|
||||
use tokio::sync::RwLock;
|
||||
use protocol::State;
|
||||
use crate::handler::{ClientData, ClientHandler, ClientManager};
|
||||
use crate::wsserver::handle_client;
|
||||
|
||||
pub mod wsserver;
|
||||
pub mod handler;
|
||||
pub mod timer;
|
||||
|
||||
async fn handle_request(mut request: Request<Body>, remote_addr: SocketAddr, mgr: ClientManager) -> Result<Response<Body>, Infallible> {
|
||||
match (request.uri().path(), request.headers().contains_key(header::UPGRADE)) {
|
||||
//if the request is ws_echo and the request headers contains an Upgrade key
|
||||
("/ws", true) => {
|
||||
//assume request is a handshake, so create the handshake response
|
||||
let response =
|
||||
match handshake::server::create_response_with_body(&request, || Body::empty()) {
|
||||
Ok(response) => {
|
||||
//in case the handshake response creation succeeds,
|
||||
//spawn a task to handle the websocket connection
|
||||
tokio::spawn(async move {
|
||||
//using the hyper feature of upgrading a connection
|
||||
match upgrade::on(&mut request).await {
|
||||
//if successfully upgraded
|
||||
Ok(upgraded) => {
|
||||
//create a websocket stream from the upgraded object
|
||||
let ws_stream = WebSocketStream::from_raw_socket(
|
||||
//pass the upgraded object
|
||||
//as the base layer stream of the Websocket
|
||||
upgraded,
|
||||
tokio_tungstenite::tungstenite::protocol::Role::Server,
|
||||
None,
|
||||
).await;
|
||||
|
||||
//we can split the stream into a sink and a stream
|
||||
let (ws_write, ws_read) = ws_stream.split();
|
||||
|
||||
let (tx, rx) = tokio::sync::mpsc::channel(128);
|
||||
|
||||
let client = ClientHandler {
|
||||
tx,
|
||||
};
|
||||
|
||||
// Acquire the write lock in a small scope, so it's dropped as quickly as possible
|
||||
{
|
||||
mgr.clients.write().await.insert(remote_addr, client);
|
||||
}
|
||||
|
||||
//forward the stream to the sink to achieve echo
|
||||
match handle_client(mgr.clone(), remote_addr, rx, ws_write, ws_read).await {
|
||||
Ok(_) => {},
|
||||
Err(e) => error!("error on WS connection {}: {}", remote_addr, e),
|
||||
};
|
||||
|
||||
// clean up values left over
|
||||
{
|
||||
mgr.clients.write().await.remove(&remote_addr);
|
||||
mgr.usernames.write().await.remove(&remote_addr);
|
||||
}
|
||||
},
|
||||
Err(e) => {
|
||||
error!("error upgrading connection from {} to WS: {}", remote_addr, e);
|
||||
}
|
||||
}
|
||||
});
|
||||
//return the response to the handshake request
|
||||
response
|
||||
},
|
||||
Err(e) => {
|
||||
//probably the handshake request is not up to spec for websocket
|
||||
error!("error creating websocket response to {}: {}", remote_addr, e);
|
||||
let mut res = Response::new(Body::from(format!("Failed to create websocket: {}", e)));
|
||||
*res.status_mut() = StatusCode::BAD_REQUEST;
|
||||
return Ok(res);
|
||||
}
|
||||
};
|
||||
|
||||
Ok::<_, Infallible>(response)
|
||||
},
|
||||
("/ws", false) => {
|
||||
Ok(Response::builder().status(400).body(Body::from("Connection-Upgrade header missing")).unwrap())
|
||||
},
|
||||
(url@_, false) => {
|
||||
// typical HTTP file request
|
||||
// TODO
|
||||
Ok(Response::new(Body::empty()))
|
||||
},
|
||||
(_, true) => {
|
||||
// http upgrade on non-/ws endpoint
|
||||
Ok(Response::builder().status(400).body(Body::from("Incorrect WebSocket endpoint")).unwrap())
|
||||
}
|
||||
}
|
||||
}
|
||||
#[tokio::main]
|
||||
async fn main() {
|
||||
simple_logger::init_with_env().expect("Unable to start logging service");
|
||||
|
||||
info!("Creating client handler");
|
||||
let mut mgr: ClientManager = ClientManager {
|
||||
clients: Arc::new(RwLock::new(Default::default())),
|
||||
};
|
||||
|
||||
let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
|
||||
|
||||
info!("Listening on {} for HTTP/WebSocket connections", addr);
|
||||
|
||||
let make_svc = make_service_fn(|conn: &AddrStream| {
|
||||
let remote_addr = conn.remote_addr();
|
||||
|
||||
let mgr_for_this_thread = mgr.clone();
|
||||
async move {
|
||||
Ok::<_, Infallible>(service_fn(move |request: Request<Body>| {
|
||||
handle_request(request, remote_addr, mgr_for_this_thread)
|
||||
}))
|
||||
}
|
||||
});
|
||||
|
||||
|
||||
|
||||
let server = Server::bind(&addr).serve(make_svc);
|
||||
|
||||
if let Err(e) = server.await {
|
||||
error!("error in server thread: {}", e);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
use std::error::Error;
|
||||
use std::time::Duration;
|
||||
use log::error;
|
||||
use tokio::sync::mpsc::Receiver;
|
||||
use tokio::time::sleep;
|
||||
use crate::handler::{ClientHandlerMessage, ClientManager};
|
||||
|
||||
pub async fn timer_main(mgr: ClientManager) {
|
||||
loop {
|
||||
sleep(Duration::from_millis(5)).await;
|
||||
|
||||
for client_thread in mgr.clients.read().await.iter() {
|
||||
match client_thread.tx.send(ClientHandlerMessage::Tick).await {
|
||||
Ok(_) => (),
|
||||
Err(e) => {
|
||||
error!("unable to update a client thread: {}", e);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,106 @@
|
|||
use std::error::Error;
|
||||
use std::net::SocketAddr;
|
||||
use futures::stream::{SplitSink, SplitStream};
|
||||
use futures::{SinkExt, StreamExt};
|
||||
use hyper::upgrade::Upgraded;
|
||||
use log::{error, info};
|
||||
use tokio::sync::mpsc::Receiver;
|
||||
use tokio_tungstenite::WebSocketStream;
|
||||
use tungstenite::Message;
|
||||
use protocol::{GoodbyeReason, MessageC2S, MessageS2C, PROTOCOL_VERSION, ps2c, State};
|
||||
use crate::handler::{ClientHandler, ClientHandlerMessage, ClientManager};
|
||||
|
||||
pub async fn handle_client(mgr: ClientManager, remote_addr: SocketAddr, mut rx: Receiver<ClientHandlerMessage>, mut write: SplitSink<WebSocketStream<Upgraded>, Message>, mut read: SplitStream<WebSocketStream<Upgraded>>) -> Result<(), Box<dyn Error>> {
|
||||
let mut state = State::Handshake;
|
||||
|
||||
loop {
|
||||
if let Some(msg) = rx.recv().await {
|
||||
match msg {
|
||||
ClientHandlerMessage::Tick => {} // this intentionally does nothing
|
||||
}
|
||||
} else {
|
||||
info!("channel closed, shutting down");
|
||||
break;
|
||||
}
|
||||
|
||||
if let Some(msg) = read.next().await {
|
||||
let msg = msg?;
|
||||
|
||||
if msg.is_binary() {
|
||||
// try to deserialize the msg
|
||||
let pkt: MessageC2S = rmp_serde::from_slice(&msg.into_data())?;
|
||||
|
||||
match state {
|
||||
State::Handshake => {
|
||||
match pkt {
|
||||
MessageC2S::Hello { version, requested_username, next_state } => {
|
||||
if !matches!(next_state, State::Play) {
|
||||
error!("client sent unexpected state {:?} (expected: Play)", next_state);
|
||||
write.send(Message::from(ps2c(&MessageS2C::Goodbye {
|
||||
reason: GoodbyeReason::UnexpectedNextState,
|
||||
}))).await?;
|
||||
break;
|
||||
}
|
||||
|
||||
// check version
|
||||
if version != PROTOCOL_VERSION {
|
||||
error!("client sent incompatible version {} (expected: {})", version, PROTOCOL_VERSION);
|
||||
write.send(Message::from(ps2c(&MessageS2C::Goodbye {
|
||||
reason: GoodbyeReason::UnsupportedProtocol {
|
||||
supported: PROTOCOL_VERSION,
|
||||
got: version,
|
||||
},
|
||||
}))).await?;
|
||||
break;
|
||||
}
|
||||
|
||||
// determine if we can give them that username
|
||||
{
|
||||
if mgr.usernames.read().await.values().into_iter().any(|u| *u == requested_username) {
|
||||
error!("client requested username {} but it is in use", requested_username);
|
||||
write.send(Message::from(ps2c(&MessageS2C::Goodbye {
|
||||
reason: GoodbyeReason::UsernameTaken,
|
||||
}))).await?;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// username is fine
|
||||
{
|
||||
mgr.usernames.write().await.insert(remote_addr, requested_username.clone());
|
||||
}
|
||||
|
||||
write.send(Message::from(ps2c(&MessageS2C::Hello {
|
||||
version,
|
||||
given_username: requested_username,
|
||||
next_state,
|
||||
}))).await?;
|
||||
},
|
||||
MessageC2S::Goodbye { reason } => {
|
||||
info!("client sent goodbye: {:?}", reason);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
State::Play => {
|
||||
match pkt {
|
||||
MessageC2S::Hello { .. } => {
|
||||
error!("client sent unexpected packet {:?} for state {:?}", pkt, state);
|
||||
write.send(Message::from(ps2c(&MessageS2C::Goodbye {
|
||||
reason: GoodbyeReason::UnexpectedPacket,
|
||||
}))).await?;
|
||||
break;
|
||||
}
|
||||
MessageC2S::Goodbye { reason } => {
|
||||
info!("client sent goodbye: {:?}", reason);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
|
@ -7,7 +7,9 @@
|
|||
|
||||
<body>
|
||||
<script type="module">
|
||||
import init, { greet } from "../client/pkg";
|
||||
// If you're getting build errors here | you need to run `just build_client_bundle` first, to compile client code
|
||||
// v
|
||||
import init, { greet } from "./dist/pkg";
|
||||
|
||||
init().then(() => {
|
||||
greet("WebAssembly");
|
||||
|
|
|
|||
Loading…
Reference in New Issue