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Date: Fri, 1 Oct 2010 01:51:33 -0400 (EDT)
From: "oliver  z (JIRA)" <jira@apache.org>
To: dev@hc.apache.org
Subject: [jira] Issue Comment Edited: (HTTPCLIENT-1004)
 EofSensorInputStreams available() always returns 0
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    [ https://issues.apache.org/jira/browse/HTTPCLIENT-1004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12916790#action_12916790 ] 

oliver  z edited comment on HTTPCLIENT-1004 at 10/1/10 1:51 AM:
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i tested it with a free online mp3:

HttpClient httpclient = new DefaultHttpClient();
        HttpGet httpget = new HttpGet("http://www.ravn.de/stuff/Programmierer.mp3");

        HttpResponse response = httpclient.execute(httpget);
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            InputStream instream = entity.getContent();
            try {
                while (instream.read() != -1) {
                    System.out.println(instream.available());
                }
            } finally {
                instream.close();
            }
        }

looks pretty strange to me, because if the read() method is not there (eg. while(true)) the output is always 1451 and the count is not rising
i'm not sure why in my application the output is always 0... any ideas?

      was (Author: olze84):
    i tested it with a free online mp3:

HttpClient httpclient = new DefaultHttpClient();
        HttpGet httpget = new HttpGet("http://www.ravn.de/stuff/Programmierer.mp3");

        HttpResponse response = httpclient.execute(httpget);
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            InputStream instream = entity.getContent();
            try {
                while (instream.read() != -1) {
                    System.out.println(instream.available());
                }
            } finally {
                instream.close();
            }
        }

looks pretty strange to me 
i'm not sure why in my application the output is always 0... any ideas?
  
> EofSensorInputStreams available() always returns 0
> --------------------------------------------------
>
>                 Key: HTTPCLIENT-1004
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1004
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: HttpClient
>    Affects Versions: 4.1 Alpha2
>         Environment: win 7 x64, netbeans 6.9.1, jdk6_21
>            Reporter: oliver  z
>
> i just wrote a little mp3 audio player which retrieves a stream and plays it. 
> to make sure the user does not play further than the song has been stored into ram, i thought i just use the available() method from the class EofSensorInputStream.
> But this method always returns 0 (normal http connection), casting to a ByteArrayInputStream would be nice, but thats not working... so i took a look at the implementation of available():
> http://www.docjar.com/html/api/org/apache/http/conn/EofSensorInputStream.java.html
>   165       @Override
>   166       public int available() throws IOException {
>   167           int a = 0; // not -1
>   168   
>   169           if (isReadAllowed()) {
>   170               try {
>   171                   a = wrappedStream.available();
>   172                   // no checkEOF() here, available() can't trigger EOF
>   173               } catch (IOException ex) {
>   174                   checkAbort();
>   175                   throw ex;
>   176               }
>   177           }
>   178   
>   179           return a;
>   180       }
> wrappedStream is an InputStream, and InputStream says to available():
> The available method for class InputStream always returns 0. 
> This method should be overridden by subclasses. 
> Im not sure if this is a bug or a feature request
> Is there any other way how i can check how many bytes has been transfered into ram?

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