make it possible to log DATAGRAM frames

qlog/frame.go

@@ -57,6 +57,8 @@ func (f frame) MarshalJSONObject(enc *gojay.Encoder) {
 		marshalConnectionCloseFrame(enc, frame)
 	case *logging.HandshakeDoneFrame:
 		marshalHandshakeDoneFrame(enc, frame)
+	case *logging.DatagramFrame:
+		marshalDatagramFrame(enc, frame)
 	default:
 		panic("unknown frame type")
 	}
@@ -218,3 +220,8 @@ func marshalConnectionCloseFrame(enc *gojay.Encoder, f *logging.ConnectionCloseF
 func marshalHandshakeDoneFrame(enc *gojay.Encoder, _ *logging.HandshakeDoneFrame) {
 	enc.StringKey("frame_type", "handshake_done")
 }
+
+func marshalDatagramFrame(enc *gojay.Encoder, f *logging.DatagramFrame) {
+	enc.StringKey("frame_type", "datagram")
+	enc.Int64Key("length", int64(f.Length))
+}

qlog/frame_test.go

@@ -364,4 +364,14 @@ var _ = Describe("Frames", func() {
 			},
 		)
 	})
+
+	It("marshals DATAGRAM frames", func() {
+		check(
+			&logging.DatagramFrame{Length: 1337},
+			map[string]interface{}{
+				"frame_type": "datagram",
+				"length":     1337,
+			},
+		)
+	})
 })