Points to the string's null terminator if request was successful.\r
Points to the most recent '&' before the first failing name/value\r
pair (or the beginning of the string if the failure is in the\r
first name/value pair) if the request was not successful.\r
Points to the string's null terminator if request was successful.\r
Points to the most recent '&' before the first failing name/value\r
pair (or the beginning of the string if the failure is in the\r
first name/value pair) if the request was not successful.\r