EZASOKET Introduction

Enterprise Server for .NET provides partial EZASOKET support which is designed to emulate, as closely as possible, the IBM implementation documented in SC31-8518-01, OS/390 SecureWay Communications Server: IP CICS Sockets Guide Version 2 Release 8 (1999). It also supports some, though not all, of the features introduced in the z/OS implementation documented in SC31-8807-02, z/OS Communications Server: IP CICS Sockets Guide Version 1 Release 5 (2004).

However, there are some differences. Enterprise Server for .NET EZASOKET support makes use of the Windows .NET TCP/IP support. Owing to differences between TCP/IP implementations, there are some circumstances in which Enterprise Server for .NET EZASOKET does not behave identically to the IBM implementation.

To use the emulation, reference the MicroFocus.SEE.Comms.Public assembly in your managed project and compile. The Micro Focus emulation mimics the IBM APIs so there should be no code change required to call the supported functionality.

General Limitations

• Does not work in an Azure deployment.
• A listener needs to be configured as the default EZASOKET host for the region.
  • This listener will be the listener upon which the windows sockets are created and used.
  • Only one listener per region can participate as the default EZASOKET host at a time.
    • Different listeners can be configured for different regions.
  • The listener is configured by using the listener configuration editor in the UI and setting the EZ listener setting to true for the region.

• The features not available in this release are:

  • IPv6 support
  • raw sockets
  • multicasting
  • full support for Out-Of-Band (OOB) data

  The EZACIC09 utility program (which is used with GETADDRINFO) is not included in this release.

  The CICS Domain Name System Cache is not included in this implementation.