1 files changed, 114 insertions, 0 deletions
diff --git a/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCDataChannelHandler.cpp b/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCDataChannelHandler.cpp
new file mode 100644
index 000000000..564b6d1c8
--- /dev/null
+++ b/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCDataChannelHandler.cpp
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2017 Apple Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "LibWebRTCDataChannelHandler.h"
+
+#if USE(LIBWEBRTC)
+
+#include "RTCDataChannel.h"
+#include <wtf/MainThread.h>
+
+namespace WebCore {
+
+LibWebRTCDataChannelHandler::~LibWebRTCDataChannelHandler()
+{
+    if (m_client)
+        m_channel->UnregisterObserver();
+}
+
+void LibWebRTCDataChannelHandler::setClient(RTCDataChannelHandlerClient* client)
+{
+    m_client = client;
+    if (m_client)
+        m_channel->RegisterObserver(this);
+    else
+        m_channel->UnregisterObserver();
+}
+
+bool LibWebRTCDataChannelHandler::sendStringData(const String& text)
+{
+    return m_channel->Send({rtc::CopyOnWriteBuffer(text.utf8().data(), text.length()), false});
+}
+
+bool LibWebRTCDataChannelHandler::sendRawData(const char* data, size_t length)
+{
+    return m_channel->Send({rtc::CopyOnWriteBuffer(data, length), true});
+}
+
+void LibWebRTCDataChannelHandler::close()
+{
+    m_channel->Close();
+}
+
+void LibWebRTCDataChannelHandler::OnStateChange()
+{
+    RTCDataChannel::ReadyState state;
+    switch (m_channel->state()) {
+    case webrtc::DataChannelInterface::kConnecting:
+        state = RTCDataChannel::ReadyStateConnecting;
+        break;
+    case webrtc::DataChannelInterface::kOpen:
+        state = RTCDataChannel::ReadyStateOpen;
+        break;
+    case webrtc::DataChannelInterface::kClosing:
+        state = RTCDataChannel::ReadyStateClosing;
+        break;
+    case webrtc::DataChannelInterface::kClosed:
+        state = RTCDataChannel::ReadyStateClosed;
+        break;
+    }
+    ASSERT(m_client);
+    callOnMainThread([protectedClient = makeRef(*m_client), state] {
+        protectedClient->didChangeReadyState(state);
+    });
+}
+
+void LibWebRTCDataChannelHandler::OnMessage(const webrtc::DataBuffer& buffer)
+{
+    ASSERT(m_client);
+    std::unique_ptr<webrtc::DataBuffer> protectedBuffer(new webrtc::DataBuffer(buffer));
+    callOnMainThread([protectedClient = makeRef(*m_client), buffer = WTFMove(protectedBuffer)] {
+        // FIXME: Ensure this is correct by adding some tests with non-ASCII characters.
+        const char* data = reinterpret_cast<const char*>(buffer->data.data());
+        if (buffer->binary)
+            protectedClient->didReceiveRawData(data, buffer->size());
+        else
+            protectedClient->didReceiveStringData(String(data, buffer->size()));
+    });
+}
+
+void LibWebRTCDataChannelHandler::OnBufferedAmountChange(uint64_t previousAmount)
+{
+    if (previousAmount <= m_channel->buffered_amount())
+        return;
+    ASSERT(m_client);
+    callOnMainThread([protectedClient = makeRef(*m_client)] {
+        protectedClient->bufferedAmountIsDecreasing();
+    });
+}
+
+} // namespace WebCore
+
+#endif // USE(LIBWEBRTC)