Server socket objects — An ABL object that a socket server creates only to listen for client connection requests. An ABL socket server receives notification of client connections in the form of events.

Socket objects — An ABL object that represents a TCP/IP socket. TCP/IP sockets are the communication endpoints of a connection. Both socket clients and servers use socket objects to read and write data on a connection. In ABL, a socket application can detect the arrival of data on a socket in the form of events. (However, this is not required.)