| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // 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_ADAPTERS_ICE_TRANSPORT_ADAPTER_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_MODULES_PEERCONNECTION_ADAPTERS_ICE_TRANSPORT_ADAPTER_H_ |
| |
| #include "third_party/webrtc/p2p/base/p2ptransportchannel.h" |
| |
| namespace blink { |
| |
| class P2PQuicPacketTransport; |
| |
| // Defines the ICE candidate policy the browser uses to surface the permitted |
| // candidates to the application. |
| // https://w3c.github.io/webrtc-pc/#dom-rtcicetransportpolicy |
| enum class IceTransportPolicy { |
| // The ICE Agent uses only media relay candidates. |
| kRelay, |
| // The ICE Agent can use any type of candidate. |
| kAll |
| }; |
| |
| // The IceTransportAdapter is the API used by the RTCIceTransport Blink binding |
| // to interact with the ICE implementation. It exactly mirrors the requirements |
| // of the RTCIceTransport: each JavaScript method that must interact with the |
| // ICE implementation should map to exactly one method call on this interface. |
| // This interface is designed to be fully asynchronous; all methods are void and |
| // callbacks occur via the Delegate (implemented by the client). |
| // |
| // The ICE Agent is immediately active once this object has been constructed. It |
| // can be stopped by deleting the IceTransportAdapter. |
| class IceTransportAdapter { |
| public: |
| // Delegate to receive callbacks from the IceTransportAdapter. The Delegate |
| // must outlive the IceTransportAdapter. |
| class Delegate { |
| public: |
| virtual ~Delegate() = default; |
| |
| // Called asynchronously when the ICE gathering state changes. |
| virtual void OnGatheringStateChanged(cricket::IceGatheringState new_state) { |
| } |
| |
| // Called asynchronously when a new ICE candidate has been gathered. |
| virtual void OnCandidateGathered(const cricket::Candidate& candidate) {} |
| |
| // Called asynchronously when the ICE connection state has changed. |
| virtual void OnStateChanged(cricket::IceTransportState new_state) {} |
| }; |
| |
| virtual ~IceTransportAdapter() = default; |
| |
| // Start ICE candidate gathering. |
| virtual void StartGathering( |
| const cricket::IceParameters& local_parameters, |
| const cricket::ServerAddresses& stun_servers, |
| const std::vector<cricket::RelayServerConfig>& turn_servers, |
| IceTransportPolicy policy) = 0; |
| |
| // Start ICE connectivity checks with the given initial remote candidates. |
| virtual void Start( |
| const cricket::IceParameters& remote_parameters, |
| cricket::IceRole role, |
| const std::vector<cricket::Candidate>& initial_remote_candidates) = 0; |
| |
| // Handle a remote ICE restart. This changes the remote parameters and clears |
| // all remote candidates. |
| virtual void HandleRemoteRestart( |
| const cricket::IceParameters& new_remote_parameters) = 0; |
| |
| // Adds a remote candidate to potentially start connectivity checks with. |
| // The caller must ensure Start() has already bene called. |
| virtual void AddRemoteCandidate(const cricket::Candidate& candidate) = 0; |
| |
| // Gets a P2PQuicPacketTransport that is backed by this ICE connection. The |
| // returned instance lives the same lifetime as the IceTransportAdapter. |
| virtual P2PQuicPacketTransport* packet_transport() const = 0; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_MODULES_PEERCONNECTION_ADAPTERS_ICE_TRANSPORT_ADAPTER_H_ |