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Inside Macintosh: Networking /

Chapter 7 - Datagram Delivery Protocol (DDP) / DDP Reference

Data Structures

The Address Block Record

The address block record defines a data structure of AddrBlock type. The destAddress parameter of the BuildDDPwds procedure takes an AppleTalk internet address value specified in this format.

You use NBP routines to get the address of an application that is registered with NBP. For more information about these routines, see the chapter "Name-Binding Protocol (NBP)" in this book.

TYPE AddrBlock = 
PACKED RECORD
   aNet:          Integer;    {network number}
   aNode:         Byte;       {node ID}
   aSocket:       Byte;       {socket number}
END; 

Field Description

aNet

The number of the network to which the node belongs that
is running the DDP client application whose address you
are specifying.

aNode

The node ID of the machine running the DDP client application whose address you are specifying.

aSocket

The number of the socket used for the DDP client application.