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Subject: Re: still got problems with too TCP connections open
From: Oleg Kalnichevski <oleg.kalnichevski@bearingpoint.com>
To: HttpClient Project <httpclient-dev@jakarta.apache.org>
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Date: Mon, 25 Oct 2004 13:59:54 +0200


Massimo,

What platform is your application running on? What is the JRE version?
What connection manager is being used: default (simple), multithreaded
or a custom one?

Oleg

On Mon, 2004-10-25 at 13:49, Massimo Signori wrote:
> Hello, i'm still having a lot of problems with my code and with TCP
> connections; at this point I just don't know if the problem is HttpClient
> but I really don't know how to fix this problem...
> 
> here's what my code do: 
> Method downloadFileViaHttpClient downloads a ZIP file from a server while
> method notifyTimeServer notifies elapsed time to the server every 5 seconds.
> 
> 
> Now, here's the code:
> 
> HttpClient is instantiated ONE time in both cases.
> 
> private void downloadFileViaHttpClient(String remoteFile, String savePath)
> throws DownloadException {
>         
>         
>         try {
>             logger.debug("DOWNLOADING FILE... " + remoteFile);
>             
>             method = new GetMethod(remoteFile);
>             
>             
>                 
>                 statusCode=client.executeMethod(method);
>                 
>                 FileOutputStream out = new FileOutputStream(savePath);
>                 
>                 InputStream in = method.getResponseBodyAsStream();
>                 
>                 byte[] buffer = new byte[4096];
>                 int len = 0;
>                 while ((len = in.read(buffer)) > 0) {
>                     out.write(buffer, 0, len);
>                 }
>                 
>                 in.close();
>                 out.close();
>                 
>                 
>         }
>         catch	(Exception e) {
>              method.releaseConnection();
>             throw new
> DownloadException(DownloadException.DOWNLOADING_ERROR);
>         }
>         finally{
>             method.releaseConnection();
>         }
>     }
> 
> And the other's method code:
> 
> private void notifyTimeServer() {
>         
>         logger.debug("notifyTimeServer, " + timerURL);
>         
>         HttpMethod method = new GetMethod(timerURL);
>         
>                  
>             logger.debug("Establishing connection");
>             
>             try {
>                 statusCode = client.executeMethod(method);
>                 
>                 if (statusCode != -1) {
>                  
>                     logger.debug("Connection estabilished");
>                     byte[] responseBody = method.getResponseBody();
>                     
>                 }
>             }
>             
>             catch (Exception e) {
>                 logger.error("Error calling jsp "  + e.getMessage());
>                                 //
>             }
>             finally{
>                 method.releaseConnection();
>             }
>                
>     }
> 
> NotifyTimeServer is called every 5 seconds... I call releaseConnection...
> but... 
> 
> Looking with TCPView the number of connections open... about 5000 !!!!
> 
> Thanks to all for any help
> 
> Best regards, 
> 
> Massimo
> 
> 
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