Abstract: A method, computer program, and computer readable medium are disclosed for maintaining communication between first and second mobile units communicating via first and second communications networks, respectively. The first and second units include, respectively, first and second protocol stacks and first and second session layers, which interface between the first and second protocol stacks and first and second software components acting within the first and second units, respectively. The first unit includes first communications hardware with associated drive routines for different communications networks. When the first unit switches from a first to a third communications network, the first session layer maintains communication by selecting the first communications hardware and drive routine required for the third communications network.

Abstract: The present invention relates to a method of achieving communication via a network with the aid of a wireless application protocol (WAP) between a first application (A1) in a first computer unit (A) and a second application in a second computer unit, wherein said first application (A1) is a Windows® application. The first computer unit (A) includes a WinSock TCP base provider (2) operating beneath WinSock SPI (3), and a TCP/UDP/IP stack (4) operating beneath said WinSock TCP base provider (2). The first application (A1) includes a function for communicating by means of TCP/IP via the TCP/UDP/IP stack (4) and the WinSock TCP base provider (2). The first computer unit (A) also includes a module (5) and a WAP stack (6). The module (5) includes the function of forming an interface between said WAP stack (6) and the first application (A1).