Release 10.1A: OpenEdge Development:
Programming Interfaces

Programming requirements

To use sockets in the 4GL:

Socket clients and servers must run locally or remotely in a TCP/IP network environment.
A potential server must have a TCP/IP port available on which to listen for connections.
A socket server can have only one server socket object enabled to listen for connections.
AppServer and WebSpeed procedures cannot function as socket servers. They can only function as socket clients.
A potential client must:
Know the hostname or IP address of the machine where the server it wants to connect to is running.
Know the TCP/IP port where the server is listening for connections.
For SSL sessions, have access to a public key certificate store as maintained by the OpenEdge features for managing certificate stores. For more information, see OpenEdge Getting Started: Core Business Services .

For more information on programming with sockets, see Chapter 17, " Sockets."