1/*
2 * Copyright (C) 2017 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#pragma once
26
27#if USE(LIBWEBRTC)
28
29#include "LibWebRTCMacros.h"
30#include "RTCDataChannelHandler.h"
31
32ALLOW_UNUSED_PARAMETERS_BEGIN
33
34#include <webrtc/api/datachannelinterface.h>
35
36ALLOW_UNUSED_PARAMETERS_END
37
38namespace webrtc {
39struct DataChannelInit;
40}
41
42namespace WebCore {
43
44class RTCDataChannelEvent;
45class RTCDataChannelHandlerClient;
46struct RTCDataChannelInit;
47class ScriptExecutionContext;
48
49class LibWebRTCDataChannelHandler final : public RTCDataChannelHandler, private webrtc::DataChannelObserver {
50 WTF_MAKE_FAST_ALLOCATED;
51public:
52 explicit LibWebRTCDataChannelHandler(rtc::scoped_refptr<webrtc::DataChannelInterface>&& channel) : m_channel(WTFMove(channel)) { ASSERT(m_channel); }
53 ~LibWebRTCDataChannelHandler();
54
55 static webrtc::DataChannelInit fromRTCDataChannelInit(const RTCDataChannelInit&);
56 static Ref<RTCDataChannelEvent> channelEvent(ScriptExecutionContext&, rtc::scoped_refptr<webrtc::DataChannelInterface>&&);
57
58private:
59 // RTCDataChannelHandler API
60 void setClient(RTCDataChannelHandlerClient&) final;
61 void checkState();
62 bool sendStringData(const String&) final;
63 bool sendRawData(const char*, size_t) final;
64 void close() final;
65 size_t bufferedAmount() const final { return static_cast<size_t>(m_channel->buffered_amount()); }
66
67 // webrtc::DataChannelObserver API
68 void OnStateChange();
69 void OnMessage(const webrtc::DataBuffer&);
70 void OnBufferedAmountChange(uint64_t);
71
72 rtc::scoped_refptr<webrtc::DataChannelInterface> m_channel;
73 RTCDataChannelHandlerClient* m_client { nullptr };
74};
75
76} // namespace WebCore
77
78#endif // USE(LIBWEBRTC)
79