netwerk/sctp/datachannel/DataChannelListener.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef NETWERK_SCTP_DATACHANNEL_DATACHANNELLISTENER_H_
   8 #define NETWERK_SCTP_DATACHANNEL_DATACHANNELLISTENER_H_
   9
  10 #include "nsISupports.h"
  11 #include "nsString.h"
  12
  13 namespace mozilla {
  14
  15 // Implemented by consumers of a Channel to receive messages.
  16 // Can't nest it in DataChannelConnection because C++ doesn't allow forward
  17 // refs to embedded classes
  18 class DataChannelListener {
  19  public:
  20   virtual ~DataChannelListener() = default;
  21
  22   // Called when a DOMString message is received.
  23   virtual nsresult OnMessageAvailable(nsISupports* aContext,
  24                                       const nsACString& message) = 0;
  25
  26   // Called when a binary message is received.
  27   virtual nsresult OnBinaryMessageAvailable(nsISupports* aContext,
  28                                             const nsACString& message) = 0;
  29
  30   // Called when the channel is connected
  31   virtual nsresult OnChannelConnected(nsISupports* aContext) = 0;
  32
  33   // Called when the channel is closed
  34   virtual nsresult OnChannelClosed(nsISupports* aContext) = 0;
  35
  36   // Called when the BufferedAmount drops below the BufferedAmountLowThreshold
  37   virtual nsresult OnBufferLow(nsISupports* aContext) = 0;
  38
  39   // Called when the BufferedAmount drops to 0
  40   virtual nsresult NotBuffered(nsISupports* aContext) = 0;
  41 };
  42
  43 }  // namespace mozilla
  44
  45 #endif