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TMultiCast

Represents internet address structures used when manipulating socket options multicast clients and servers.

TMultiCast is a record type that represents internet address structures used when manipulating socket options for TIdIPMCastClient and TIdIPMCastServer. TMultiCast is used with API- or OS-level calls that join or depart a multicast group, and when data is sent to the multicast group address. 

IMRMultiAddr is a TIdInAddr member that represents the native internet address structure for the multicast group address. 

IMRInterface is a TIdInAddr member that represents the native internet address structure for the local IP address used for datagram transmission and/or receipt.

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