Winsock IPX/SPX Annex

This section describes Winsock extensions specific to Internetwork Packet Exchange/Sequenced Packet Exchange (IPX/SPX). It also describes aspects of base Winsock functions that either require special consideration or may exhibit unique behavior.

Element Description
Protocol name(s) IPX, SPX
Description Provides transport services over the IPX networking layer: IPX for unreliable datagrams, SPX for reliable, connection-oriented message streams.
Address family AF_IPX
Header file Wsipx.h


This section discusses how to use Winsock with the IPX family of protocols, enabling traditional IPX applications to be ported to Winsock. IPX networks operate in a fundamentally different manner than IP networks, so such differences must be considered when using IPX/SPX.