Return the value of a header as JSON encoded object string.
Returns the JSON encoded string value for a header (e.g. ""). If it
does not exist, NULL will be returned.
@param jwt Pointer to a JWT object.
@param header String containing the name of the header to return a value
for. If this is NULL, all headers will be returned as a JSON encoded
hash.
@return Returns a string for the value, or NULL when not found. The
returned string must be freed by the caller.
Return the value of a header as JSON encoded object string.
Returns the JSON encoded string value for a header (e.g. ""). If it does not exist, NULL will be returned.
@param jwt Pointer to a JWT object. @param header String containing the name of the header to return a value for. If this is NULL, all headers will be returned as a JSON encoded hash. @return Returns a string for the value, or NULL when not found. The returned string must be freed by the caller.