How to use

compareTo

method

in

org.jboss.netty.handler.codec.http.HttpVersion

/**
 * Returns {@code true} if and only if the specified message contains the
 * {@code "Expect: 100-continue"} header.
 */
public static boolean is100ContinueExpected(HttpMessage message) {
  // Expect: 100-continue is for requests only.
  if (!(message instanceof HttpRequest)) {
    return false;
  }
  // It works only on HTTP/1.1 or later.
  if (message.getProtocolVersion().compareTo(HttpVersion.HTTP_1_1) < 0) {
    return false;
  }
  // In most cases, there will be one or zero 'Expect' header.
  String value = message.headers().get(Names.EXPECT);
  if (value == null) {
    return false;
  }
  if (Values.CONTINUE.equalsIgnoreCase(value)) {
    return true;
  }
  // Multiple 'Expect' headers.  Search through them.
  return message.headers().contains(Names.EXPECT, Values.CONTINUE, true);
}