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

        public static extern void SetBroadcastCredentials(int hostId, int key, int version, int subversion, out byte error);
        [MethodImpl(MethodImplOptions.InternalCall)]

 public bool StartAsClient()
 {
     if (m_HostId != -1 || m_Running)
     {
         if (LogFilter.logWarn)
         {
             Debug.LogWarning("NetworkDiscovery StartAsClient already started");
         }
         return(false);
     }
     m_HostId = NetworkTransport.AddHost(m_DefaultTopology, m_BroadcastPort);
     if (m_HostId == -1)
     {
         if (LogFilter.logError)
         {
             Debug.LogError("NetworkDiscovery StartAsClient - addHost failed");
         }
         return(false);
     }
     NetworkTransport.SetBroadcastCredentials(m_HostId, m_BroadcastKey, m_BroadcastVersion, m_BroadcastSubVersion, out byte _);
     m_Running  = true;
     m_IsClient = true;
     if (LogFilter.logDebug)
     {
         Debug.Log("StartAsClient Discovery listening");
     }
     return(true);
 }