ISO/IEC 25437:2012

Overview

ISO/IEC 25437:2012 - WS-Session specifies Web services (WSDL) and SOAP bindings to support the Application Session Services defined in ISO/IEC 22534. The standard defines how Service Requesters (applications) and Service Providers (servers) create, maintain and terminate application-level sessions (ApplicationSession). It imports the XML schema definitions from ISO/IEC 22534 and focuses on WSDL 1.1 interfaces, SOAP 1.1 bindings, and event subscription/notification mechanisms for reliable session management.

Key technical topics and requirements

• Abstract WSDL definitions
  • Provider WSDL: interface that Service Providers must implement (Start/Stop/Reset ApplicationSession operations).
  • Notification WSDL: interface that Service Requesters must implement to receive session event notifications (e.g., ApplicationSessionTerminated).
• SOAP bindings
  • SOAP 1.1 bindings for Provider and Notification WSDLs, including sessionID handling and SOAP fault message formats.
• Event subscription and notification
  • WS-Eventing is the mandatory eventing mechanism for session notifications.
  • WS-BaseNotification is supported as an option.
  • Supports synchronous subscription responses and an optional asynchronous response mode (Annex C).
• Conformance rules
  • Service Providers must publish Provider and Notification WSDLs and implement required operations (including Annex A).
  • Service Requesters must implement the Notification WSDL to receive events.
• Reusable content and examples
  • Normative and informative annexes provide XML schema imports, SOAP XML templates, WSDL binding examples, and WS-Eventing/WS-BaseNotification templates (Annexes A–G).

Practical applications and who would use this standard

ISO/IEC 25437:2012 is useful for architects and developers building interoperable Web services that require application-level session lifecycle management. Typical users include:

• Telecom and network equipment vendors implementing session-aware services.
• Middleware and application server vendors that provide session management APIs via Web services.
• System integrators and enterprise architects needing standardized session creation, timeout/reset, termination, and notification flows.
• Standards engineers implementing interoperable eventing channels using WS-Eventing or WS-BaseNotification for session events.

Practical benefits include standardized WSDL/SOAP interfaces for session lifecycle operations, interoperable event notifications (ApplicationSessionTerminated), and clear conformance rules that enable multi-vendor deployments and integration.

Related standards

• ISO/IEC 22534 (Application Session Services) - XML schemas and message definitions used by this standard
• WS-Eventing (W3C) - mandatory event subscription mechanism
• WS-BaseNotification (OASIS) - optional notification mechanism
• WSDL 1.1, SOAP 1.1, XML Schema, WS-Addressing - referenced protocol and schema standards

Keywords: ISO/IEC 25437, WS-Session, application session services, WSDL, SOAP bindings, session management, WS-Eventing, WS-BaseNotification, ISO/IEC 22534.