This chapter examines the mechanism for creating, configuring, and using transports and listeners when developing Web services.

Transports are used to invoke a Web service and are easily pluggable so that a service can dynamically select the transport at runtime, with no need to edit or recompile any code.

Listeners are used in standalone server implementations and client-side code to listen for messages arriving from a server, the latter in the notification pattern or in the solicit-response pattern. They too are dynamic and can be easily changed or selected at runtime.

These are the topics discussed in this chapter: