1.2 CICS Web Interface (CICS Transaction Server)

In addition to the functionality previously outlined, the CICS TS CWI can also translate between CICS 3270 screens and internet format pages. Application program changes are not required. The application can use Basic Mapping Support (BMS), or native Terminal Control logic.

It is possible to enhance the internet format pages produced from 3270 screens. For example, a company logo can be added to internet pages and the background can be altered.

The information flows between the browser and CICS as follows:

1. An optional Decode function can be used to format the communications area passed to the CICS Web bridge. Otherwise the entire browser request is passed.
2. The CICS program that interfaces between web browsers and CICS transactions is called. It invokes the CICS bridge transaction to run the program corresponding to the requested CICS transaction.
3. When the program attempts to send output to the screen, the data is intercepted by the CICS Web bridge exit.
4. If requested, the Encode function enhances the response contained in the communication area.

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