// IceAgentInterface provides methods that allow an ICE controller to manipulate // the connections available to a transport, and used by the transport to // transfer data. class IceAgentInterface {
public:
virtual ~IceAgentInterface() = default;
// Get the time when the last ping was sent. // This is only needed in some scenarios if the agent decides to ping on its // own, eg. in some switchover scenarios. Otherwise the ICE controller could // keep this state on its own. // TODO(bugs.webrtc.org/14367): route extra pings through the ICE controller.
virtual Timestamp GetLastPingSent() const = 0;
// Get the ICE role of this ICE agent.
virtual IceRole GetIceRole() const = 0;
// Called when a pingable connection first becomes available.
virtual void OnStartedPinging() = 0;
// Update the state of all available connections.
virtual void UpdateConnectionStates() = 0;
// Update the internal state of the ICE agent. An ICE controller should call // this at the end of a sequence of actions to combine several mutations into // a single state refresh. // TODO(bugs.webrtc.org/14431): ICE agent state updates should be internal to // the agent. If batching is necessary, use a more appropriate interface.
virtual void UpdateState() = 0;
// Reset the given connections to a state of newly connected connections. // - STATE_WRITE_INIT // - receving = false // - throw away all pending request // - reset RttEstimate // // Keep the following unchanged: // - connected // - remote_candidate // - statistics // // SignalStateChange will not be triggered.
virtual void ForgetLearnedStateForConnections(
std::span<const Connection* const> connections) = 0;
// Send a STUN ping request for the given connection.
virtual void SendPingRequest(const Connection* connection) = 0;
// Switch the transport to use the given connection.
virtual void SwitchSelectedConnection(const Connection* new_connection,
IceSwitchReason reason) = 0;
// Prune away the given connections. Returns true if pruning is permitted and // successfully performed.
virtual bool PruneConnections(
std::span<const Connection* const> connections) = 0;
};
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