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/*
* Copyright (C) 2023 Apple Inc. All rights reserved.
*
* 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.
*/
#pragma once
#include "ActiveDOMObject.h"
#include "ExceptionOr.h"
#include "WebTransportOptions.h"
#include "WebTransportReliabilityMode.h"
#include "WebTransportSessionClient.h"
#include <wtf/ListHashSet.h>
#include <wtf/RefCounted.h>
namespace JSC {
class JSGlobalObject;
}
namespace WebCore {
enum class WebTransportCongestionControl : uint8_t;
class DOMException;
class DOMPromise;
class DatagramSource;
class DeferredPromise;
class JSDOMGlobalObject;
class ReadableStream;
class ScriptExecutionContext;
class SocketProvider;
class WebTransportBidirectionalStreamSource;
class WebTransportDatagramDuplexStream;
class WebTransportError;
class WebTransportReceiveStreamSource;
class WebTransportSession;
class WritableStream;
struct WebTransportCloseInfo;
struct WebTransportSendStreamOptions;
struct WebTransportHash;
class WebTransport : public WebTransportSessionClient, public ActiveDOMObject {
public:
static ExceptionOr<Ref<WebTransport>> create(ScriptExecutionContext&, String&&, WebTransportOptions&&);
~WebTransport();
// ActiveDOMObject.
void ref() const final { WebTransportSessionClient::ref(); }
void deref() const final { WebTransportSessionClient::deref(); }
void getStats(Ref<DeferredPromise>&&);
DOMPromise& ready();
WebTransportReliabilityMode reliability();
WebTransportCongestionControl congestionControl();
DOMPromise& closed();
DOMPromise& draining();
void close(WebTransportCloseInfo&&);
WebTransportDatagramDuplexStream& datagrams();
void createBidirectionalStream(ScriptExecutionContext&, WebTransportSendStreamOptions&&, Ref<DeferredPromise>&&);
ReadableStream& incomingBidirectionalStreams();
void createUnidirectionalStream(ScriptExecutionContext&, WebTransportSendStreamOptions&&, Ref<DeferredPromise>&&);
ReadableStream& incomingUnidirectionalStreams();
RefPtr<WebTransportSession> session();
private:
WebTransport(ScriptExecutionContext&, JSDOMGlobalObject&, Ref<ReadableStream>&&, Ref<ReadableStream>&&, WebTransportCongestionControl, Ref<WebTransportDatagramDuplexStream>&&, Ref<DatagramSource>&&, Ref<WebTransportReceiveStreamSource>&&, Ref<WebTransportBidirectionalStreamSource>&&);
void initializeOverHTTP(SocketProvider&, ScriptExecutionContext&, URL&&, bool dedicated, bool http3Only, WebTransportCongestionControl, Vector<WebTransportHash>&&);
void cleanup(Ref<DOMException>&&, std::optional<WebTransportCloseInfo>&&);
// ActiveDOMObject.
bool virtualHasPendingActivity() const final;
void receiveDatagram(std::span<const uint8_t>) final;
void receiveIncomingUnidirectionalStream() final;
void receiveBidirectionalStream() final;
ListHashSet<Ref<WritableStream>> m_sendStreams;
ListHashSet<Ref<ReadableStream>> m_receiveStreams;
Ref<ReadableStream> m_incomingBidirectionalStreams;
Ref<ReadableStream> m_incomingUnidirectionalStreams;
// https://www.w3.org/TR/webtransport/#dom-webtransport-state-slot
enum class State : uint8_t {
Connecting,
Connected,
Draining,
Closed,
Failed
};
State m_state { State::Connecting };
using PromiseAndWrapper = std::pair<Ref<DOMPromise>, Ref<DeferredPromise>>;
PromiseAndWrapper m_ready;
WebTransportReliabilityMode m_reliability { WebTransportReliabilityMode::Pending };
WebTransportCongestionControl m_congestionControl;
PromiseAndWrapper m_closed;
PromiseAndWrapper m_draining;
Ref<WebTransportDatagramDuplexStream> m_datagrams;
RefPtr<WebTransportSession> m_session;
Ref<DatagramSource> m_datagramSource;
Ref<WebTransportReceiveStreamSource> m_receiveStreamSource;
Ref<WebTransportBidirectionalStreamSource> m_bidirectionalStreamSource;
};
}
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