Abstract: A method and system for implementing a common protocol for communication of data between a first application program and a second application program. The method and system uses a high level interface specification that is created in a computer program language-independent fashion using an object oriented paradigm. The high level interface specification is used to define the common protocol, and to generate first and second protocol interfaces. Either of the generated first and second protocol interfaces is capable of performing the services of a client or server, and are inserted into the first and second application programs respectively. The first and second protocol interfaces are executed by the first and second application programs for communication of data between them using the common protocol.