How to use

decodePathExtension

method

in

ucar.nc2.dataset.DatasetUrl

svctype = decodePathExtension(trueurl); // look at the path extension
if(svctype == null && checkIfNcml(new File(location))) {
 svctype = ServiceType.NCML;

static private boolean checkIfRemoteNcml(String location) throws IOException {
 if (decodePathExtension(location)==ServiceType.NCML) {
  // just because location ends with ncml does not mean it's ncml
  // if the ncml file is being served up via http by a remote server,
  // we should be able to read the first bit of it and see if it even
  // looks like an ncml file.
  try (HTTPMethod method = HTTPFactory.Get(location)) {
   method.setRange(0, NUM_BYTES_TO_DETERMINE_NCML);
   method.setRequestHeader("accept-encoding", "identity");
   int statusCode = method.execute();
   if (statusCode >= 300) {
    if (statusCode == 401) {
     throw new IOException("Unauthorized to open dataset " + location);
    } else if (statusCode == 406) {
     String msg = location + " - this server does not support returning content without any encoding.";
     msg = msg + " Please download the file locally. Return status=" + statusCode;
     throw new IOException(msg);
    } else {
     throw new IOException(location + " is not a valid URL, return status=" + statusCode);
    }
   }
   return checkIfNcml(method.getResponseAsString());
  }
 }
 return false;
}