Topic Path: Symbol Reference > Classes > TIdPacketInfo Class > TIdPacketInfo Properties > SourceIF Property
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TIdPacketInfo.SourceIF Property

Network interface for the originating endpoint of the packet transmission.

property SourceIF: Cardinal;

SourceIF is a Cardinal property that represents the network interface on the originating endpoint used to read or write the contents of a packet transmission. 

Use SourceIP, and SourcePort to access the IP address, and port number information for the originating endpoint for the packet transmission. 

Use DestIF, DestIP, and DestPort to access the network interface, IP address, and port number on the destination endpoint used for the packet transmission.

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