Communications/Transactions Guide and Reference
Use the TCP/IP Proc Dialog - Settings window to change the attributes of a
TCP/IP Proc Dialog.
Use the Destination tab to specify the
transaction program (TP) and logical unit (LU) you want to connect to:
- Hostname
- In the Hostname field, type the symbolic name of the host where
the remote function you want to access resides. You can specify the
numeric IP address of the host instead of a symbolic name.
- Port number
- In the Port number field, type the port number used by the
server program you want to connect to.
Use the Data Attributes tab to specify
program initialization parameters and data handling options for a
conversation:
- Code page
- In the Code page field, type the character code page used by
the remote system. The default code page is whatever the current code
page is for the system you are developing your application on.
- Buffer length
- In the Buffer length field, type the size of the memory buffer
VisualAge should allocate for the data sent to and received from the
server. For a remote external function call, the buffer size must be at
least as large as the total size of the record used by the function.
The default value for this field is 1024.
- Big endian
- Select Big endian to specify you want the partner to use the
bigEndian format. If you do not select Big endian, the
partner uses littleEndian format.
Use the Records tab to specify the record
that will be passed to the function on the server. When VisualAge calls
the remote function, it can pass the program a record containing input and
output fields. When the function completes, any output fields are
filled in with the function's output values.
If the remote function does not require a record, you can leave this page
blank.
- Function language
- Under Function language, select the type (C or COBOL) for the
record to be passed.
- File name
- In the File name field, type the name of the C header file or
COBOL copybook file declaring the data types or records used by the external
function. To list the available files, select Find.
To view the contents of a file, select View. When you have
specified the file you want to use, select Parse.
- Parse
- Select Parse to have VisualAge read the C header file or COBOL
copybook file and build a list of records. From the list, you can
manually build the parameter list to use with the external function.
The records (or potential parameters) appear in the Available
list. The parameters you select appear on the external function
part's public interface. Then, other parts can set or retrieve the
values contained in the records.
- Parameter word size
- Under Parameter word size, select the word size used for system
dependent data types (16 bit or 32 bit). This
setting is not available on UNIX systems.
- Available records
- The Available records list shows all of the record formats, or
data types, defined in the file specified in the File to Parse
field.
If you are working with a C External Function, for a C header file, these
are all of the data types declared with typedef or
struct. If you are working with a COBOL External Function,
for a COBOL copybook file, these are the record formats declared by 01-level
and 77-level declarations. The items specified in the PROCEDURE
DIVISION USING statement or "ENTRY" statement should compose the list of the
To be passed.
Alignment
Under Alignment, change the selection from 1 if fields must be
aligned on byte oundaries. Possible values are 1, 2, 4, and 8
Tasks
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