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External Program
Interfaces


Sockets

The 4GL provides direct access to TCP/IP sockets. Sockets provide a means to implement interprocess communications with both local and remote processes. Using 4GL sockets, you can communicate with non-4GL processes, as well as other 4GL processes. Thus, you can implement socket-based applications completely in the 4GL that otherwise require the use of C modules accessible only through the HLC or shared library interfaces.

This chapter describes how you can access TCP/IP sockets directly from the 4GL. It assumes that you are familiar with basic TCP/IP socket programming.

This chapter contains the following sections:


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