This version of Unity is unsupported.
Method group is Obsolete

NetworkTransport.StartSendMulticast

Obsolete public static bool StartSendMulticast(int hostId, int channelId, byte[] buffer, int size, out byte error);

Parameters

hostIdHost ID associated with this connection.
channelIdThe channel ID.
bufferBuffer containing the data to send.
sizeSize of the buffer.
errorError (can be cast to NetworkError for more information).

Description

Start to multicast send.