How to check if InputStream is Gzipped?

Question

Is there any way to check if InputStream has been gzipped? Here\'s the code:

public static InputStream decompressStream(InputStream input) {
    try {
               


        

Answer 1

Not exactly what you are asking but could be an alternative approach if you are using HttpClient:

private static InputStream getInputStream(HttpEntity entity) throws IOException {
  Header encoding = entity.getContentEncoding(); 
  if (encoding != null) {
     if (encoding.getValue().equals("gzip") || encoding.getValue().equals("zip") ||      encoding.getValue().equals("application/x-gzip-compressed")) {
        return new GZIPInputStream(entity.getContent());
     }
  }
  return entity.getContent();
}