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COBOL Data Encoding

An additional encoding library, ConvMVSC, has been included for TUXEDO clients using COBOL data types. This library, ConvMVSC, is similar to the default library, ConvMVS, but differs in the following ways:

For the STRING data type, both ConvMVSC and ConvMVS perform ASCII-to-EBCDIC and EBCDIC-to-ASCII translation.
- For strings sent to a remote gateway, both libraries will perform ASCII-to-EBCDIC conversion, and forward the string to the mainframe.
- For string received from a remote gateway, the ConvMVS library will perform EBCDIC-to-ASCII translation, truncate any trailing space characters and add a NULL terminator. The ConvMVSC library will perform the translation, but will not truncate spaces or add the terminator.
For the VIEW data type, the ConvMVS and ConvMVSC libraries treat all field types except STRING the same.
- For STRING fields within a view sent to a remote gateway, ConvMVS will perform ASCII-to-EBCDIC conversion, and append space to `pad' the string with space characters to the size of the field. ConvMVSC will perform the character conversion, but will not perform any `padding'.
- For STRING fields within a view received from a remote gateway, ConvMVS will perform EBCDIC-to-ASCII conversion, truncate any trailing space characters, and add a NULL terminator. The ConvMVSC library will perform the character conversion, but will not truncate spaces or add the terminator.

Using the COBOL Data Encoding Library

There are two methods for enabling the COBOL data-encoding library:

COBOL data encoding for all services
COBOL data encoding for messages to and from a specific host

Encoding for All Services

If COBOL data encoding is desired for every service in the gateway, set the parameter DFLTTYPE="MVSC" in the *GLOBAL section of the GWICONFIG file.

Listing D-1 Encoding for All Services

*GLOBAL

DFLTTYPE="MVSC"

Encoding Messages To and From a Specific Host

To enable COBOL data encoding for messages to and from a specific host, set the parameter TYPE="MVSC" for that hosts *FOREIGN entry in the GWICONFIG file.

Listing D-2 Encoding for Messages To and From a Specific Host

*FOREIGN

HOST_NAME
TYPE="MVSC"

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