Re: [jetty-discuss] question

[Nishant K. <nis...@it...>]

hi,
	can you try out replacing this jsp with a servlet. jsp should be used
for embedding small amount of java in html or xml. since you wan't to
send pure binary data you should be using a servlet.
	when jsp starts it opens a writer for you and you are opening a stream
here. may be this is the cause of the problem. i may be wrong here but
can you try replacing this with a servlet.

thanks,
nishant.

On Fri, 2003-12-19 at 13:13, Eugeny N Dzhurinsky wrote:
> Chris Haynes wrote:
> > 24-hour tag-team response here :-)
> > 
> > There's no indication of anything being wrong with the request from the Applet.
> > 
> > There is a problem in you JSP response - and there are two symptoms:
> > 
> > 1) The error message below is Jetty warning you that more octets were returned
> > in the response than JSP's buffer told it about.
> > Jetty should, however, have transmitted all the 1264 bytes which were written to
> > the request's output stream.
> > 
> > 2)  The Applet (URLConnection) is probably trusting the Content-Length header
> > and only processing the first 1224 bytes. That's why you get no (complete)
> > response.
> > 
> > The problem is in your JSP code. Somehow an extra 40 bytes are being written
> > which JSP's internal counter is not catching. Maybe you are doing some
> > 'unconventional' output somewhere and managing to bypass JSP's (buffered and
> > metered) output stream?
> > 
> > And, before you ask, one could only explain why it appears to work on other
> > servers when one has found the exact problem.  It's possible that other servers
> > double-buffer the response and re-calculate the length for themselves. Jetty
> > trusts JSP to do the buffering correctly and calculate the length. Jetty
> > compares what JSP declared in the Content-Length header with the tally it keeps
> > for itself as the response bytes flow through it. The warning you have below is
> > the result of that comparison failing.
> 
> So the possible error is inside JSP?
> 
> here is. Can you please tell me what's wrong with it?
> 
> ==================================================================================
> 
> <%@page import="java.io.*,
>                                  java.net.*,
>                                  javax.servlet.*" %>
> 
> <%@page extends="javax.servlet.GenericServlet" %>
> 
> <%!
>          public void service(ServletRequest request, ServletResponse 
> response)
>                  throws IOException
>          {
>                  String host = "localhost";
>                  int port = 8088;
> 
>                  // Getting data from the request
> 
>                  ServletInputStream reqstream = request.getInputStream(  );
>                  int mType = reqstream.read( );
>                  int cSize = reqstream.read( );
>                  int offset = 0;
>                  byte[] b = new byte[ cSize ];
>                  while ( offset < cSize ) {
>                          offset += reqstream.read( b, offset, cSize - 
> offset );
>                  }
> 
>                  //conecting to SIM server and sending data
> 
>                  Socket socket = new Socket( host, port );
>                  OutputStream soutstream = socket.getOutputStream();
>                  soutstream.write(mType);
>                  soutstream.write(cSize);
>                  soutstream.write( b );
>                  soutstream.flush(  );
> 
>                  // Getting data from SIM server
> 
>                  InputStream sinpstream = socket.getInputStream(  );
>                  mType = sinpstream.read(  );
>                  cSize = sinpstream.read(  );
>                  offset = 0;
>                  b = new byte[ cSize ];
>                  while ( offset < cSize ) {
>                          offset += sinpstream.read( b, offset, cSize - 
> offset );
>                  }
>                  sinpstream.close();
>                  soutstream.close();
>                  socket.close(  );
> 
>                  //sending back data
> 
>                  response.setContentType( "application/octet-stream" );
>                  ServletOutputStream respoutstream = 
> response.getOutputStream();
>                  respoutstream.write(mType);
>                  respoutstream.write(cSize);
>                  respoutstream.write(b);
>                  respoutstream.flush();
>                  response.flushBuffer(  );
>          }
> %>