jwtHeaderGetJSON (Function)

jwtHeaderGetJSON reads a header from the JWT object as a JSON encoded string

If no header name is provided, the entire header is returned.

Input:

jwt : SYSHANDLE

A handle to the JWT object.

name : STRING

The name of the header to read. Use an empty string to get the entire header.

Output:

value : STRING

The value of the header.

Returns: INT

Declaration:

FUNCTION jwtHeaderGetJSON : INT;
VAR_INPUT
  jwt   : SYSHANDLE;
  name  : STRING;
  value : ACCESS STRING;
END_VAR;

Example:

INCLUDE rtcu.inc
 
PROGRAM test;
VAR
  rc  : INT;
  str : STRING;
  jwt : SYSHANDLE;
END_VAR;
 
BEGIN
  ...
  // Read header
  rc := jwtHeaderGetJSON(jwt := jwt, name := "map", value := str);
  ...
END;
 
END_PROGRAM;