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From "Oleg Kalnichevski (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HTTPCLIENT-1170) Incomplete data received from servlet
Date Wed, 29 Feb 2012 11:39:58 GMT

     [ https://issues.apache.org/jira/browse/HTTPCLIENT-1170?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Oleg Kalnichevski resolved HTTPCLIENT-1170.
-------------------------------------------

    Resolution: Invalid

Unfortunately just your saying is not enough. If there is no more bytes available in the input
stream the most likely explanation is that the server is simply is not sending any.

(1) Please remove your custom code and change your code to use a standard route to consume
response content such as those provided HttpUtils. Once you get it to work you can change
your application code to use whatever custom routine you see fit.
(2) Please provide a _complete_ wire / context log of the session [1]. 

If you re-open this issue without providing sufficient evidence the alleged bug, I'll close
it without giving any additional explanations.

Oleg

[1] http://hc.apache.org/httpcomponents-client-ga/logging.html
                
> Incomplete data received from servlet
> -------------------------------------
>
>                 Key: HTTPCLIENT-1170
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1170
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: HttpClient
>    Affects Versions: 4.1.3
>         Environment: java 1.7.0_0, Windows 7 x 64, Apache 7.0.22, connections are made
throug http://localhost
>            Reporter: Aniceto PĂ©rez y Madrid
>            Priority: Blocker
>
> Hi
> I have this servlet that generates on the fly a binary response by serializing an object.
buf size is about 30 KB. I've been using this code to serve files for a long time. If I access
that servlet using any web browser, the received file is OK.
> 			byte[] buf = respObject.stringBinSerialize();
> 			response.setContentLength(buf.length);
> 			response.setContentType("binary/octet-stream");
> 			response.setStatus(HttpServletResponse.SC_OK);
> 			OutputStream out = response.getOutputStream();
> 			out.write(buf);
> 			out.flush();
> Now I have this client code and it doesn't receive the full response. 
>                 byte[] completo = new byte[0], temporal;
>                 byte[] cbuf = new byte[4096];
>                 int cuenta = 0, esta = 0;
>                 HttpParams params = new SyncBasicHttpParams();
>                 HttpConnectionParams.setSocketBufferSize(params, 64000);
>                 HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
>                 HttpClient httpclient = new DefaultHttpClient(params);
>                 try {
>                     HttpPost httpost = new HttpPost(targetURLinclServletName);
>                     HttpGet httpget = new HttpGet("http://localhost:8080/myservlet");
>                     HttpResponse response = httpclient.execute(httpget);
>                     HttpEntity entity = response.getEntity();
>                     if (entity != null) {
>                         System.out.println("ent sz " + entity.getContentLength() + "
chk " + entity.isChunked() + " is rept " + entity.isRepeatable() + "  str " + entity.isStreaming());
> //                        completo = EntityUtils.toByteArray(entity);
>                         System.out.println("bytearrayed " + completo.length);
>                         InputStream instream = entity.getContent();
>                         while (completo.length != entity.getContentLength() &&
(esta = instream.read(cbuf)) != -1) {
>                             if (selector.equals(RPCdefs.SELECTOR_PROYLIST) || true) {
>                                 cuenta += esta;
>                                 System.out.println("readline" + esta + "  van " + cuenta);
>                                 System.out.println("sz " + entity.getContentLength());
>                             }
>                             temporal = new byte[completo.length + esta];
>                             System.arraycopy(completo, 0, temporal, 0, completo.length);
>                             System.arraycopy(cbuf, 0, temporal, completo.length, esta);
>                             completo = temporal;
>                             temporal = null;
>                         }
>                     }
>                     EntityUtils.consume(entity);
>                 } finally {
>                     httpclient.getConnectionManager().shutdown();
>                 }
> The simplest way to receive is  EntityUtils.toByteArray(entity), but it gets hung. The
loop for partial copy is to know how may bytes are received. They are about 17845. The initial
params were added to check if the issue was related to flow control, but with 64 KB buffers
it doesn't changes anything. 

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