public void process(final HttpResponse response, final HttpContext context)
throws HttpException, IOException {
if (response == null) {
throw new IllegalArgumentException("HTTP response may not be null.");
}
int status = response.getStatusLine().getStatusCode();
if ((status >= HttpStatus.SC_OK) && !response.containsHeader(HTTP.DATE_HEADER)) {
String httpdate = DATE_GENERATOR.getCurrentDate();
response.setHeader(HTTP.DATE_HEADER, httpdate);
}
}
