endpoint MUST discard unsupported (unknown) frame

2 files changed, 16 insertions, 0 deletions

diff --git a/test/plum/test_server_connection.rb b/test/plum/test_server_connection.rb
index 032275a..5bfdf98 100644
--- a/test/plum/test_server_connection.rb
+++ b/test/plum/test_server_connection.rb
@@ -24,6 +24,14 @@ class ServerConnectionTest < Minitest::Test
     end
   end
 
+  def test_server_ignore_unknown_frame_type
+    open_server_connection {|con|
+      refute_raises {
+        con << Frame.new(type_value: 0x0f, stream_id: 0).assemble
+      }
+    }
+  end
+
   def test_server_raise_cprotocol_error_client_start_even_stream_id
     con = open_server_connection
     assert_connection_error(:protocol_error) {
diff --git a/test/plum/test_stream.rb b/test/plum/test_stream.rb
index 19162e7..ebe881f 100644
--- a/test/plum/test_stream.rb
+++ b/test/plum/test_stream.rb
@@ -11,6 +11,14 @@ class StreamTest < Minitest::Test
     }
   end
 
+  def test_stream_unknown_frame_type
+    open_new_stream {|stream|
+      refute_raises {
+        stream.process_frame(Frame.new(type_value: 0x0f, stream_id: stream.id, payload: "\x00\x00\x00\x00"))
+      }
+    }
+  end
+
   def test_stream_close
     open_new_stream(state: :half_closed_local) {|stream|
       stream.close(StreamError.new(:frame_size_error).http2_error_code)