Spawn new task for relayed clients that were held

src/service/server.rs

@@ -1,7 +1,8 @@
 use std::sync::Arc;
 
+use bytes::BytesMut;
 use futures::FutureExt;
-use tokio::net::TcpListener;
+use tokio::net::{TcpListener, TcpStream};
 
 use crate::config::Config;
 use crate::proto::Client;
@@ -42,32 +43,64 @@ pub async fn service(config: Arc<Config>) -> Result<(), ()> {
         Server::start(config.clone(), server.clone(), None);
     }
 
-    // Proxy all incomming connections
+    // Route all incomming connections
     while let Ok((inbound, _)) = listener.accept().await {
-        let client = Client::default();
+        route(inbound, config.clone(), server.clone());
+    }
 
-        let online = server.state() == server::State::Started;
-        if !online {
+    Ok(())
+}
+
+/// Route inbound TCP stream to correct service, spawning a new task.
+#[inline]
+fn route(inbound: TcpStream, config: Arc<Config>, server: Arc<Server>) {
+    if server.state() == server::State::Started {
+        route_proxy(inbound, config)
+    } else {
+        route_status(inbound, config, server)
+    }
+}
+
+/// Route inbound TCP stream to status server, spawning a new task.
+#[inline]
+fn route_status(inbound: TcpStream, config: Arc<Config>, server: Arc<Server>) {
     // When server is not online, spawn a status server
-            let transfer =
-                status::serve(client, inbound, config.clone(), server.clone()).map(|r| {
+    let client = Client::default();
+    let service = status::serve(client, inbound, config.clone(), server.clone()).map(|r| {
         if let Err(err) = r {
             warn!(target: "lazymc", "Failed to serve status: {:?}", err);
         }
     });
 
-            tokio::spawn(transfer);
-        } else {
+    tokio::spawn(service);
+}
+
+/// Route inbound TCP stream to proxy, spawning a new task.
+#[inline]
+fn route_proxy(inbound: TcpStream, config: Arc<Config>) {
     // When server is online, proxy all
-            let transfer = proxy::proxy(inbound, config.server.address).map(|r| {
+    let service = proxy::proxy(inbound, config.server.address).map(|r| {
         if let Err(err) = r {
             warn!(target: "lazymc", "Failed to proxy: {}", err);
         }
     });
 
-            tokio::spawn(transfer);
-        }
+    tokio::spawn(service);
 }
 
-    Ok(())
+/// Route inbound TCP stream to proxy with queued data, spawning a new task.
+#[inline]
+pub fn route_proxy_queue<'a>(inbound: TcpStream, config: Arc<Config>, queue: BytesMut) {
+    // When server is online, proxy all
+    let service = async move {
+        proxy::proxy_with_queue(inbound, config.server.address, &queue)
+            .map(|r| {
+                if let Err(err) = r {
+                    warn!(target: "lazymc", "Failed to proxy: {}", err);
+                }
+            })
+            .await
+    };
+
+    tokio::spawn(service);
 }

src/status.rs

@@ -1,10 +1,8 @@
 use std::sync::Arc;
 use std::time::{Duration, Instant};
 
-use crate::proxy;
 use crate::server::State;
 use bytes::BytesMut;
-use futures::TryFutureExt;
 use minecraft_protocol::data::chat::{Message, Payload};
 use minecraft_protocol::data::server_status::*;
 use minecraft_protocol::decoder::Decoder;
@@ -20,6 +18,7 @@ use tokio::time;
 use crate::config::*;
 use crate::proto::{self, Client, ClientState, RawPacket};
 use crate::server::{self, Server};
+use crate::service;
 
 /// Client holding server state poll interval.
 const HOLD_POLL_INTERVAL: Duration = Duration::from_millis(500);
@@ -111,7 +110,7 @@ pub async fn serve(
                 hold_queue.extend(buf.split_off(0));
 
                 // Start holding
-                hold(inbound, config, server, &mut hold_queue).await?;
+                hold(inbound, config, server, hold_queue).await?;
                 return Ok(());
             }
 
@@ -150,7 +149,7 @@ pub async fn hold<'a>(
     mut inbound: TcpStream,
     config: Arc<Config>,
     server: Arc<Server>,
-    holding: &mut BytesMut,
+    hold_queue: BytesMut,
 ) -> Result<(), ()> {
     trace!(target: "lazymc", "Started holding client");
 
@@ -186,9 +185,7 @@ pub async fn hold<'a>(
 
                 // Relay client to proxy
                 info!(target: "lazymc", "Server ready for held client, relaying to server");
-                proxy::proxy_with_queue(inbound, config.server.address, &holding)
-                    .map_err(|_| ())
-                    .await?;
+                service::server::route_proxy_queue(inbound, config, hold_queue);
                 return Ok(());
             }