public static boolean expectContent(RequestHeader request) throws MessageFormatException {
String method = request.getMethod();
if (!"POST".equalsIgnoreCase(method) && !"PUT".equalsIgnoreCase(method)) return false;
String contentLength = request.getHeader(CONTENT_LENGTH);
String transferEncoding = request.getHeader(TRANSFER_ENCODING);
if (transferEncoding != null) return true;
if (contentLength == null)
throw new MessageFormatException(
"Request content expected, but no length specified!", request.getHeader());
try {
int cl = Integer.parseInt(contentLength);
if (cl < 0)
throw new MessageFormatException(
"Negative content length: " + contentLength, request.getHeader());
if (cl == 0) return false;
return true;
} catch (NumberFormatException nfe) {
throw new MessageFormatException(
"Invalid content length: " + contentLength, nfe, request.getHeader());
}
}
public static boolean isExpectContinue(RequestHeader request) throws MessageFormatException {
return "100-continue".equalsIgnoreCase(request.getHeader("Expect"));
}
public static boolean expectContent(RequestHeader request, ResponseHeader response)
throws MessageFormatException {
String method = request.getMethod();
String status = response.getStatus();
return !("HEAD".equalsIgnoreCase(method) || "204".equals(status) || "304".equals(status));
}