diff --git a/quic/core/quic_session.h b/quic/core/quic_session.h
index 7da8ec3..d8f40c9 100644
--- a/quic/core/quic_session.h
+++ b/quic/core/quic_session.h
@@ -525,6 +525,9 @@
   // Returns true if the stream is still active.
   bool IsOpenStream(QuicStreamId id);
 
+  // Returns true if the stream is a static stream.
+  bool IsStaticStream(QuicStreamId id) const;
+
   // Close connection when receive a frame for a locally-created nonexistant
   // stream.
   // Prerequisite: IsClosedStream(stream_id) == false