thanks, but flush() doesn't help. I guess I need to know if there is a way to detect that the request has been cancelled?
Charlie > -----Original Message----- > From: Rajah Kalipatnapu [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, October 17, 2001 6:15 PM > To: [EMAIL PROTECTED] > Subject: RE: cancelled request > > > I'm not sure how far this helps. But try flush() every time > you write bytes > to outputstream. > Even though u r loosing the advantage of BufferStream by > flushing every > time, there is a chance that u'll get an IOException if the > user cancels the > download and the IOStream is closed, as the flush() forces > the bytes to the > end stream. > > while(-1 != (bytesRead = bisDownload.read(buff, 0, buff.length))) > { > bosDownload.write(buff, 0, bytesRead); > bosDownload.flush(); > } > > -Raj > > -----Original Message----- > From: Barry White [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, October 17, 2001 2:50 PM > To: [EMAIL PROTECTED] > Subject: Re: cancelled request > > > I have never done anything like that but I was thinking you > could use some > kind of timeout in your servlet. Try doing this in your > while loop. You > could also check bytesread and make sure it is changing. > > hope this helps, > Barry > ----- Original Message ----- > From: "Cox, Charlie" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, October 17, 2001 4:32 PM > Subject: cancelled request > > > > I didn't see anything about this in the archives, so > hopefully someone can > > help me out here. > > > > TC 3.2.1/IIS 5/W2K > > I am using a servlet to serve a large file (50MB) and > everything works > fine > > if it completes as requested. But if the user clicks 'cancel', I get > > different results from Tomcat. Sometimes the servlet stops > running where > it > > is, as if the thread is interrupted, while other times it continues > running > > like nothing happened. In the both cases the download box > disappears from > > the browser. Netscape 6.1,4.7 and IE 5.5 all act the same > way. (IE 5.0 has > a > > problem here, but I have other problems with it too). > > > > here's the code in my servlet providing the file > > > > resp.setContentType("application/octet-stream; name=somefile.exe;"); > > resp.setHeader("Content-Disposition", > "attachment;filename=somefile.exe;"); > > resp.setHeader("Content-Length", String.valueOf(filelength) + ";"); > > > > InputStream isDownload; > > isDownload = getServletContext().getResourceAsStream(filename); > > BufferedInputStream bisDownload = new > BufferedInputStream(isDownload,2048); > > BufferedOutputStream bosDownload = new > > BufferedOutputStream(resp.getOutputStream()); > > byte[] buff = new byte[2048]; > > int bytesRead; > > > > while(-1 != (bytesRead = bisDownload.read(buff, 0, buff.length))) > > { > > bosDownload.write(buff, 0, bytesRead); > > } > > bosDownload.close(); > > bisDownload.close(); > > > > > > The reason that this is an issue is that I send an email > upon completion > of > > this download, and it shouldn't be sent if the user clicks > 'cancel' but it > > is being sent when the servlet continues processing. I've > also wrapped > this > > code is a try/catch and no exception/error is ever thrown. > > > > Charlie > > >
