UnityEngine.Networking.NetworkTransport.ConnectAsNetworkHost C# (CSharp) Method

        public static extern void ConnectAsNetworkHost(int hostId, string address, int port, NetworkID network, SourceID source, NodeID node, out byte error);
        public static int ConnectEndPoint(int hostId, EndPoint endPoint, int exceptionConnectionId, out byte error)

        public void ListenRelay(string relayIp, int relayPort, NetworkID netGuid, SourceID sourceId, NodeID nodeId)
        {
            Initialize();

            m_ServerHostId = NetworkTransport.AddHost(m_HostTopology, listenPort);
            if (LogFilter.logDebug)
            {
                Debug.Log("Server Host Slot Id: " + m_ServerHostId);
            }

            Update();

            byte error;

            NetworkTransport.ConnectAsNetworkHost(
                m_ServerHostId,
                relayIp,
                relayPort,
                netGuid,
                sourceId,
                nodeId,
                out error);

            m_RelaySlotId = 0;
            if (LogFilter.logDebug)
            {
                Debug.Log("Relay Slot Id: " + m_RelaySlotId);
            }
        }