Bound forwarded stream buffering

src/bin/dosh-server.rs

@@ -189,7 +189,7 @@ struct ClientState {
     pending: VecDeque<PendingFrame>,
     last_screen: Option<vt100::Screen>,
     allowed_forwardings: Vec<ForwardingRequest>,
-    stream_writers: HashMap<u64, mpsc::UnboundedSender<Vec<u8>>>,
+    stream_writers: HashMap<u64, mpsc::Sender<Vec<u8>>>,
 }
 
 #[derive(Clone)]
@@ -1014,7 +1014,7 @@ async fn handle_stream_open(
         }
     };
     let (mut reader, mut writer) = stream.into_split();
-    let (writer_tx, mut writer_rx) = mpsc::unbounded_channel::<Vec<u8>>();
+    let (writer_tx, mut writer_rx) = mpsc::channel::<Vec<u8>>(1024);
     {
         let mut locked = state.lock().expect("server state poisoned");
         let session = locked
@@ -1096,7 +1096,7 @@ async fn handle_stream_data(
         client.stream_writers.get(&data.stream_id).cloned()
     };
     if let Some(writer) = writer {
-        let _ = writer.send(data.bytes);
+        let _ = writer.send(data.bytes).await;
     }
     Ok(())
 }
@@ -1227,7 +1227,7 @@ async fn start_remote_forwards(
                 };
                 let stream_id = allocate_server_stream_id(&state);
                 let (mut reader, mut writer) = stream.into_split();
-                let (writer_tx, mut writer_rx) = mpsc::unbounded_channel::<Vec<u8>>();
+                let (writer_tx, mut writer_rx) = mpsc::channel::<Vec<u8>>(1024);
                 {
                     let mut locked = state.lock().expect("server state poisoned");
                     if let Some(session) = locked.sessions.get_mut(&session_name)