Establishing TCP IP service between Web Services and CICS via CIEP Default transactions

                    TCPIP Connection between CICS and Web Services

If you have any Java front end connected to CICS via Web Services following parameters needs to be taken care of:

Currently, I have tested with the Web Services using WSDL objects. There are Web services use the standard web protocols HTTP, XML, SOAP, WSDL, and UDDI. WSDL (Web Services Description Language) is an XML-based language used to define web services and to describe how to access them. 

- Connection between CICS and Web Method Serivces via TCP IP protocols

- Define TCP IP Service and link it to the port number

Command in CICS

 tcpips(WEBM234) Ope Por(01234) ECI Nos Trans(CIEP)

This port is connected to the listener transaction in CICS CIEP which invokes default listener program DFHIEP. This would enable the ECI (External Call Interface) calls via TCP/IP provided the client is setup.

On the client side that is on Web Services Methods there are communication parameters to be defined that is 

• Host Name - Example pkam.mf.xyz.net
• Port Name  - The above mentioned host name is linked to CICS port defined 01234
• CICS Mirror Transaction CPMI - Any service which runs under CIEP transaction defined above is linked here and it runs under mirror transaction CPMI

Read Related Blog:

Separate CICS Default Transactions and Business Application Logic Transactions