Retire closed transport stream ids

src/bin/dosh-server.rs

@@ -2053,6 +2053,9 @@ async fn handle_stream_data(
         }
         client.endpoint = peer;
         client.last_seen = Instant::now();
+        if !client.opened_streams.contains(&data.stream_id) {
+            return Ok(());
+        }
         let writer = client.stream_writers.get(&data.stream_id).cloned();
         let (writes, consumed, received_offset) = accept_stream_data(client, data);
         (writer, writes, consumed, received_offset)
@@ -2062,9 +2065,9 @@ async fn handle_stream_data(
             let _ = writer.send(bytes).await;
         }
     }
-    // Always return flow-control credit, even when the stream's writer is already
-    // gone (closed/unknown). The peer debited its send window for these bytes, so
-    // skipping the adjust would wedge the stream at a permanent credit deficit.
+    // Always return flow-control credit for live streams, even when the stream's
+    // writer is already gone. The peer debited its send window for these bytes,
+    // so skipping the adjust would wedge the stream at a permanent credit deficit.
     send_stream_window_adjust_to_client(
         state,
         socket,
@@ -2101,7 +2104,9 @@ async fn handle_stream_open_ok(
         }
         client.endpoint = peer;
         client.last_seen = Instant::now();
-        client.stream_pending_opens.remove(&ok.stream_id);
+        if client.stream_pending_opens.remove(&ok.stream_id).is_none() {
+            return Ok(());
+        }
         client.opened_streams.insert(ok.stream_id);
         client
             .stream_send_credit
@@ -2161,6 +2166,9 @@ async fn handle_stream_window_adjust(
         }
         client.endpoint = peer;
         client.last_seen = Instant::now();
+        if !client.opened_streams.contains(&adjust.stream_id) {
+            return Ok(());
+        }
         ack_stream_data(client, adjust.stream_id, adjust.received_offset);
     }
     flush_stream_pending_data_to_client(state, socket, packet.header.conn_id, adjust.stream_id)