1 /* 2 * Copyright 2020 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef PC_SDP_STATE_PROVIDER_H_ 12 #define PC_SDP_STATE_PROVIDER_H_ 13 14 #include <string> 15 16 #include "api/jsep.h" 17 #include "api/peer_connection_interface.h" 18 19 namespace webrtc { 20 21 // This interface provides access to the state of an SDP offer/answer 22 // negotiation. 23 // 24 // All the functions are const, so using this interface serves as 25 // assurance that the user is not modifying the state. 26 class SdpStateProvider { 27 public: ~SdpStateProvider()28 virtual ~SdpStateProvider() {} 29 30 virtual PeerConnectionInterface::SignalingState signaling_state() const = 0; 31 32 virtual const SessionDescriptionInterface* local_description() const = 0; 33 virtual const SessionDescriptionInterface* remote_description() const = 0; 34 virtual const SessionDescriptionInterface* current_local_description() 35 const = 0; 36 virtual const SessionDescriptionInterface* current_remote_description() 37 const = 0; 38 virtual const SessionDescriptionInterface* pending_local_description() 39 const = 0; 40 virtual const SessionDescriptionInterface* pending_remote_description() 41 const = 0; 42 43 // Whether an ICE restart has been asked for. Used in CreateOffer. 44 virtual bool NeedsIceRestart(const std::string& content_name) const = 0; 45 // Whether an ICE restart was indicated in the remote offer. 46 // Used in CreateAnswer. 47 virtual bool IceRestartPending(const std::string& content_name) const = 0; 48 virtual absl::optional<rtc::SSLRole> GetDtlsRole( 49 const std::string& mid) const = 0; 50 }; 51 52 } // namespace webrtc 53 54 #endif // PC_SDP_STATE_PROVIDER_H_ 55