Hi, I'm trying to uncompress a GZIPed HTTP Response by using GZIPInputStream. However I always have the same exception when I try to read the stream : java.util.zip.ZipException: invalid bit length repeat My HTTP Request Header: GET www.myurl.com HTTP/1.0\r\n User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; fr; rv:1.9.2) Gecko/20100115 Firefox/3.6\r\n Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n Accept-Language: fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3\r\n Accept-Encoding: gzip,deflate\r\n Accept-Charset: ISO-8859-1,UTF-8;q=0.7,*;q=0.7\r\n Keep-Alive: 115\r\n Connection: keep-alive\r\n X-Requested-With: XMLHttpRequest\r\n Cookie: Some Cookies\r\n\r\n At the end of the HTTP Response header, I get path=/Content-Encoding: gzip, followed by the gziped response. I tried 2 similars codes to uncompress : GZIPInputStream gzip = new GZIPInputStream (new ByteArrayInputStream (tBytes)); StringBuffer szBuffer = new StringBuffer (); byte tByte [] = new byte [1024]; while (true) { int iLength = gzip.read (tByte, 0, 1024); // <-- Error comes here if (iLength < 0) break; szBuffer.append (new String (tByte, 0, iLength)); } And this one that I get on this forum : InputStream gzipStream = new GZIPInputStream (new ByteArrayInputStream (tBytes)); Reader decoder = new InputStreamReader (gzipStream, "UTF-8");//<- I tried ISO-8859-1 and get the same exception BufferedReader buffered = new BufferedReader (decoder); I guess this is an encoding error. Best regards, bill0ute