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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_PEERCONNECTION_RTC_SCTP_TRANSPORT_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_PEERCONNECTION_RTC_SCTP_TRANSPORT_H_
#include <memory>
#include "base/task/single_thread_task_runner.h"
#include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable.h"
#include "third_party/blink/renderer/core/execution_context/execution_context_lifecycle_observer.h"
#include "third_party/blink/renderer/modules/event_target_modules.h"
#include "third_party/blink/renderer/modules/peerconnection/adapters/sctp_transport_proxy.h"
#include "third_party/webrtc/api/scoped_refptr.h"
#include "third_party/webrtc/api/sctp_transport_interface.h"
namespace blink {
class SctpTransportProxy;
class RTCDtlsTransport;
class V8RTCSctpTransportState;
enum class RTCSctpTransportState { kChecking, kConnected, kClosed };
// Blink bindings for the RTCSctpTransport JavaScript object.
class MODULES_EXPORT RTCSctpTransport final
: public EventTarget,
public ExecutionContextClient,
public SctpTransportProxy::Delegate {
DEFINE_WRAPPERTYPEINFO();
public:
RTCSctpTransport(
ExecutionContext* context,
webrtc::scoped_refptr<webrtc::SctpTransportInterface> native_transport);
// Constructor with explicit thread injection, used for testing.
RTCSctpTransport(
ExecutionContext* context,
webrtc::scoped_refptr<webrtc::SctpTransportInterface> native_transport,
scoped_refptr<base::SingleThreadTaskRunner> main_thread,
scoped_refptr<base::SingleThreadTaskRunner> worker_thread);
~RTCSctpTransport() override;
// rtc_sctp_transport.idl
RTCDtlsTransport* transport() const;
V8RTCSctpTransportState state() const;
double maxMessageSize() const;
std::optional<int16_t> maxChannels() const;
DEFINE_ATTRIBUTE_EVENT_LISTENER(statechange, kStatechange)
// SctpTransportProxy::Delegate
void OnStartCompleted(webrtc::SctpTransportInformation info) override;
void OnStateChange(webrtc::SctpTransportInformation info) override;
// EventTarget overrides.
const AtomicString& InterfaceName() const override;
ExecutionContext* GetExecutionContext() const override;
// Others
void ChangeState(webrtc::SctpTransportInformation info);
void SetTransport(RTCDtlsTransport*);
webrtc::scoped_refptr<webrtc::SctpTransportInterface> native_transport();
// Called from owning RtcPeerConnection when it is closed.
void Close();
// For garbage collection.
void Trace(Visitor* visitor) const override;
private:
webrtc::SctpTransportInformation current_state_;
webrtc::scoped_refptr<webrtc::SctpTransportInterface> native_transport_;
std::unique_ptr<SctpTransportProxy> proxy_;
Member<RTCDtlsTransport> dtls_transport_;
bool start_completed_ = false;
bool closed_from_owner_ = false;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_PEERCONNECTION_RTC_SCTP_TRANSPORT_H_
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