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/*
* Copyright 2018 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef PC_DTLS_TRANSPORT_H_
#define PC_DTLS_TRANSPORT_H_
#include <memory>
#include <utility>
#include "api/dtls_transport_interface.h"
#include "api/ice_transport_interface.h"
#include "api/scoped_refptr.h"
#include "p2p/base/dtls_transport.h"
#include "p2p/base/dtls_transport_internal.h"
#include "pc/ice_transport.h"
#include "rtc_base/synchronization/mutex.h"
#include "rtc_base/thread.h"
#include "rtc_base/thread_annotations.h"
namespace webrtc {
class IceTransportWithPointer;
// This implementation wraps a cricket::DtlsTransport, and takes
// ownership of it.
class DtlsTransport : public DtlsTransportInterface {
public:
// This object must be constructed and updated on a consistent thread,
// the same thread as the one the cricket::DtlsTransportInternal object
// lives on.
// The Information() function can be called from a different thread,
// such as the signalling thread.
explicit DtlsTransport(
std::unique_ptr<cricket::DtlsTransportInternal> internal);
rtc::scoped_refptr<IceTransportInterface> ice_transport() override;
// Currently called from the signaling thread and potentially Chromium's
// JS thread.
DtlsTransportInformation Information() override;
void RegisterObserver(DtlsTransportObserverInterface* observer) override;
void UnregisterObserver() override;
void Clear();
cricket::DtlsTransportInternal* internal() {
RTC_DCHECK_RUN_ON(owner_thread_);
return internal_dtls_transport_.get();
}
const cricket::DtlsTransportInternal* internal() const {
RTC_DCHECK_RUN_ON(owner_thread_);
return internal_dtls_transport_.get();
}
protected:
~DtlsTransport();
private:
void OnInternalDtlsState(cricket::DtlsTransportInternal* transport,
DtlsTransportState state);
void UpdateInformation();
// Called when changing `info_`. We only change the values from the
// `owner_thread_` (a.k.a. the network thread).
void set_info(DtlsTransportInformation&& info) RTC_RUN_ON(owner_thread_) {
MutexLock lock(&lock_);
info_ = std::move(info);
}
DtlsTransportObserverInterface* observer_ = nullptr;
rtc::Thread* owner_thread_;
mutable Mutex lock_;
DtlsTransportInformation info_ RTC_GUARDED_BY(lock_);
std::unique_ptr<cricket::DtlsTransportInternal> internal_dtls_transport_
RTC_GUARDED_BY(owner_thread_);
const rtc::scoped_refptr<IceTransportWithPointer> ice_transport_;
};
} // namespace webrtc
#endif // PC_DTLS_TRANSPORT_H_