1 files changed, 45 insertions, 0 deletions
diff --git a/netwerk/sctp/datachannel/DataChannelListener.h b/netwerk/sctp/datachannel/DataChannelListener.h
new file mode 100644
index 0000000000..06564b6cc7
--- /dev/null
+++ b/netwerk/sctp/datachannel/DataChannelListener.h
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef NETWERK_SCTP_DATACHANNEL_DATACHANNELLISTENER_H_
+#define NETWERK_SCTP_DATACHANNEL_DATACHANNELLISTENER_H_
+
+#include "nsISupports.h"
+#include "nsString.h"
+
+namespace mozilla {
+
+// Implemented by consumers of a Channel to receive messages.
+// Can't nest it in DataChannelConnection because C++ doesn't allow forward
+// refs to embedded classes
+class DataChannelListener {
+ public:
+  virtual ~DataChannelListener() = default;
+
+  // Called when a DOMString message is received.
+  virtual nsresult OnMessageAvailable(nsISupports* aContext,
+                                      const nsACString& message) = 0;
+
+  // Called when a binary message is received.
+  virtual nsresult OnBinaryMessageAvailable(nsISupports* aContext,
+                                            const nsACString& message) = 0;
+
+  // Called when the channel is connected
+  virtual nsresult OnChannelConnected(nsISupports* aContext) = 0;
+
+  // Called when the channel is closed
+  virtual nsresult OnChannelClosed(nsISupports* aContext) = 0;
+
+  // Called when the BufferedAmount drops below the BufferedAmountLowThreshold
+  virtual nsresult OnBufferLow(nsISupports* aContext) = 0;
+
+  // Called when the BufferedAmount drops to 0
+  virtual nsresult NotBuffered(nsISupports* aContext) = 0;
+};
+
+}  // namespace mozilla
+
+#endif