91 lines
3.4 KiB
C
91 lines
3.4 KiB
C
|
/*
|
||
|
|
* Copyright 2019 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 API_SCTP_TRANSPORT_INTERFACE_H_
|
||
|
|
#define API_SCTP_TRANSPORT_INTERFACE_H_
|
||
|
|
|
||
|
|
#include "absl/types/optional.h"
|
||
|
|
#include "api/dtls_transport_interface.h"
|
||
|
|
#include "api/rtc_error.h"
|
||
|
|
#include "api/scoped_refptr.h"
|
||
|
|
#include "rtc_base/ref_count.h"
|
||
|
|
|
||
|
|
namespace webrtc {
|
||
|
|
|
||
|
|
// States of a SCTP transport, corresponding to the JS API specification.
|
||
|
|
// http://w3c.github.io/webrtc-pc/#dom-rtcsctptransportstate
|
||
|
|
enum class SctpTransportState {
|
||
|
|
kNew, // Has not started negotiating yet. Non-standard state.
|
||
|
|
kConnecting, // In the process of negotiating an association.
|
||
|
|
kConnected, // Completed negotiation of an association.
|
||
|
|
kClosed, // Closed by local or remote party.
|
||
|
|
kNumValues
|
||
|
|
};
|
||
|
|
|
||
|
|
// This object gives snapshot information about the changeable state of a
|
||
|
|
// SctpTransport.
|
||
|
|
// It reflects the readonly attributes of the object in the specification.
|
||
|
|
// http://w3c.github.io/webrtc-pc/#rtcsctptransport-interface
|
||
|
|
class RTC_EXPORT SctpTransportInformation {
|
||
|
|
public:
|
||
|
|
explicit SctpTransportInformation(SctpTransportState state);
|
||
|
|
SctpTransportInformation(
|
||
|
|
SctpTransportState state,
|
||
|
|
rtc::scoped_refptr<DtlsTransportInterface> dtls_transport,
|
||
|
|
absl::optional<double> max_message_size,
|
||
|
|
absl::optional<int> max_channels);
|
||
|
|
~SctpTransportInformation();
|
||
|
|
// The DTLS transport that supports this SCTP transport.
|
||
|
|
rtc::scoped_refptr<DtlsTransportInterface> dtls_transport() const {
|
||
|
|
return dtls_transport_;
|
||
|
|
}
|
||
|
|
SctpTransportState state() const { return state_; }
|
||
|
|
absl::optional<double> MaxMessageSize() const { return max_message_size_; }
|
||
|
|
absl::optional<int> MaxChannels() const { return max_channels_; }
|
||
|
|
|
||
|
|
private:
|
||
|
|
SctpTransportState state_;
|
||
|
|
rtc::scoped_refptr<DtlsTransportInterface> dtls_transport_;
|
||
|
|
absl::optional<double> max_message_size_;
|
||
|
|
absl::optional<int> max_channels_;
|
||
|
|
};
|
||
|
|
|
||
|
|
class SctpTransportObserverInterface {
|
||
|
|
public:
|
||
|
|
// This callback carries information about the state of the transport.
|
||
|
|
// The argument is a pass-by-value snapshot of the state.
|
||
|
|
// The callback will be called on the network thread.
|
||
|
|
virtual void OnStateChange(SctpTransportInformation info) = 0;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
virtual ~SctpTransportObserverInterface() = default;
|
||
|
|
};
|
||
|
|
|
||
|
|
// A SCTP transport, as represented to the outside world.
|
||
|
|
// This object is created on the network thread, and can only be
|
||
|
|
// accessed on that thread, except for functions explicitly marked otherwise.
|
||
|
|
// References can be held by other threads, and destruction can therefore
|
||
|
|
// be initiated by other threads.
|
||
|
|
class SctpTransportInterface : public rtc::RefCountInterface {
|
||
|
|
public:
|
||
|
|
// This function can be called from other threads.
|
||
|
|
virtual rtc::scoped_refptr<DtlsTransportInterface> dtls_transport() const = 0;
|
||
|
|
// Returns information on the state of the SctpTransport.
|
||
|
|
// This function can be called from other threads.
|
||
|
|
virtual SctpTransportInformation Information() const = 0;
|
||
|
|
// Observer management.
|
||
|
|
virtual void RegisterObserver(SctpTransportObserverInterface* observer) = 0;
|
||
|
|
virtual void UnregisterObserver() = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace webrtc
|
||
|
|
|
||
|
|
#endif // API_SCTP_TRANSPORT_INTERFACE_H_
|