Inside Macintosh: Networking /

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

Routines

This section describes these DDP interface routines:

• the POpenSkt function that you use to open a DDP socket
• the PCloseSkt function that you use to close a socket that you opened with the POpenSkt function
• the PWriteDDP function that you use to send a datagram to another socket
• the BuildDDPwds procedure that you use to create a data structure to hold the header and data information that you want DDP to send

You pass parameters to and receive them from DDP in the fields of the parameter block whose pointer you pass directly to the routine that you call. An arrow preceding each parameter indicates whether it is an input parameter, an output parameter, or both:

Arrow	Meaning
-->	Input
<--	Output
<->	Both

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Subtopics

Opening and Closing DDP Sockets

Sending DDP Datagrams