Web service offer device and web service request device, web service offer manner and web service request manner

摘要

Provided are a web service provision apparatus (400) and method and a web service request apparatus (500) and method. The web service provision apparatus (400) includes a message generation unit (420), a session management unit (530) and a task processing unit (410). The message generation unit (420) generates an access request message (600) including connection maintaining information. The session management unit (530) manages a session with a web service request apparatus (500) that has received the access request message (600). The task processing unit (410) processes a task according to a task request message from the web service request apparatus (500), which is received through the session.