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From Aniceto Pérez y Madrid (Commented) (JIRA) <j...@apache.org>
Subject [jira] [Commented] (HTTPCLIENT-1170) Incomplete data received from servlet
Date Wed, 29 Feb 2012 12:49:57 GMT

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-1170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13219155#comment-13219155
] 

Aniceto Pérez y Madrid commented on HTTPCLIENT-1170:
----------------------------------------------------

This is a faulty conversation using byte[]  completo = EntityUtils.toByteArray(entity); to
extract content
----------------------------------------------------------------------------------------------------------------------------------------------------
DEBUG [org.apache.http.impl.conn.SingleClientConnManager] Get connection for route HttpRoute[{}->http://localhost:8080]
DEBUG [org.apache.http.impl.conn.DefaultClientConnectionOperator] Connecting to localhost:8080
DEBUG [org.apache.http.client.protocol.RequestAddCookies] CookieSpec selected: best-match
DEBUG [org.apache.http.client.protocol.RequestAuthCache] Auth cache not set in the context
DEBUG [org.apache.http.impl.client.DefaultHttpClient] Attempt 1 to execute request
DEBUG [org.apache.http.impl.conn.DefaultClientConnection] Sending request: GET /GerensDocs/BuzonProyectoRPC?ComRPC_version=2.0&Selector=crpl&ComRPC_WrappedContent=rO0ABXNyACRjb20uaW5ub3Zhc29mdHBzLmltcGwuQ29tUlBDV3JhcHBlcjLYplP02gce7wIAA0wA+CGNsaWVudElkdAASTGphdmEvbGFuZy9TdHJpbmc7TAAGb2JqZXRvdAASTGphdmEvbGFuZy9PYmpl+Y3Q7TAAJb3Bjb3VudGVydAATTGphdmEvbGFuZy9JbnRlZ2VyO3hwcHNyACdnZXJlbnNkb2NzLmNv+bXVudXBsb2FkZXIuUmVxUHJvamVjdExpc3T_QN4G5Yx0bwIABEwABWVtYWlscQB-AAFMAAVmaXJt+YXEAfgABTAACaHNxAH4AAUwABGluZm9xAH4AAXhwdAAXYXBlcmV6QGlubm92YXNvZnRwcy5jb210+ACg3MzZiOTA3YzkyYzQzODA3Yjg1OWNlNWVjM2Y1MThjZTA1MGUxZDI0dAAoNGExZGM3NTM4ODg0+OGNmZTRkZGMzZWEwNDczOTY1YmFmMmZiNDBkNXQAJ2I3ZjI4NGQ5YTRhNjdkNTNkY2RjMjdlMWM1+YWM5ODMzYjRmNDlkMHA%3D&ComRPC_AllHash_NAME=92939388e44a7aeb170a53ec2ac6299f6f745633
HTTP/1.1
DEBUG [org.apache.http.headers] >> GET /GerensDocs/BuzonProyectoRPC?ComRPC_version=2.0&Selector=crpl&ComRPC_WrappedContent=rO0ABXNyACRjb20uaW5ub3Zhc29mdHBzLmltcGwuQ29tUlBDV3JhcHBlcjLYplP02gce7wIAA0wA+CGNsaWVudElkdAASTGphdmEvbGFuZy9TdHJpbmc7TAAGb2JqZXRvdAASTGphdmEvbGFuZy9PYmpl+Y3Q7TAAJb3Bjb3VudGVydAATTGphdmEvbGFuZy9JbnRlZ2VyO3hwcHNyACdnZXJlbnNkb2NzLmNv+bXVudXBsb2FkZXIuUmVxUHJvamVjdExpc3T_QN4G5Yx0bwIABEwABWVtYWlscQB-AAFMAAVmaXJt+YXEAfgABTAACaHNxAH4AAUwABGluZm9xAH4AAXhwdAAXYXBlcmV6QGlubm92YXNvZnRwcy5jb210+ACg3MzZiOTA3YzkyYzQzODA3Yjg1OWNlNWVjM2Y1MThjZTA1MGUxZDI0dAAoNGExZGM3NTM4ODg0+OGNmZTRkZGMzZWEwNDczOTY1YmFmMmZiNDBkNXQAJ2I3ZjI4NGQ5YTRhNjdkNTNkY2RjMjdlMWM1+YWM5ODMzYjRmNDlkMHA%3D&ComRPC_AllHash_NAME=92939388e44a7aeb170a53ec2ac6299f6f745633
HTTP/1.1
DEBUG [org.apache.http.headers] >> Host: localhost:8080
DEBUG [org.apache.http.headers] >> Connection: Keep-Alive
DEBUG [org.apache.http.impl.conn.DefaultClientConnection] Receiving response: HTTP/1.1 200
OK
DEBUG [org.apache.http.headers] << HTTP/1.1 200 OK
DEBUG [org.apache.http.headers] << Server: Apache-Coyote/1.1
DEBUG [org.apache.http.headers] << Content-Type: application/octet-stream;charset=UTF-8
DEBUG [org.apache.http.headers] << Content-Length: 30828
DEBUG [org.apache.http.headers] << Date: Wed, 29 Feb 2012 12:32:33 GMT
DEBUG [org.apache.http.impl.client.DefaultHttpClient] Connection can be kept alive indefinitely

and here it stops then doing  completo = EntityUtils.toByteArray(entity);

And this is a working one
------------------------------------
DEBUG [org.apache.http.impl.conn.SingleClientConnManager] Get connection for route HttpRoute[{}->http://localhost:8080]
DEBUG [org.apache.http.impl.conn.DefaultClientConnectionOperator] Connecting to localhost:8080
DEBUG [org.apache.http.client.protocol.RequestAddCookies] CookieSpec selected: best-match
DEBUG [org.apache.http.client.protocol.RequestAuthCache] Auth cache not set in the context
DEBUG [org.apache.http.impl.client.DefaultHttpClient] Attempt 1 to execute request
DEBUG [org.apache.http.impl.conn.DefaultClientConnection] Sending request: GET /GerensDocs/BuzonProyectoRPC?ComRPC_version=2.0&Selector=crping&ComRPC_WrappedContent=rO0ABXNyACRjb20uaW5ub3Zhc29mdHBzLmltcGwuQ29tUlBDV3JhcHBlcjLYplP02gce7wIAA0wA+CGNsaWVudElkdAASTGphdmEvbGFuZy9TdHJpbmc7TAAGb2JqZXRvdAASTGphdmEvbGFuZy9PYmpl+Y3Q7TAAJb3Bjb3VudGVydAATTGphdmEvbGFuZy9JbnRlZ2VyO3hwcHNyACBnZXJlbnNkb2NzLmNv+bXVudXBsb2FkZXIuUmVxUGluZ0HkEJQWJCPlAgADWgALaXNVcGxvYWRpbmdMAAVlbWFpbHEAfgAB+TAACaHNxAH4AAXhwAHB0ACg4MTU1MDJjZDQ4NjcyMmFjYWRjYWI1NTg3YzU4NGI3Y2EyNDA3MTY5+cA%3D%3D&ComRPC_AllHash_NAME=58705d496ea65c65f670eb45bbca1bbc6c64110e
HTTP/1.1
DEBUG [org.apache.http.headers] >> GET /GerensDocs/BuzonProyectoRPC?ComRPC_version=2.0&Selector=crping&ComRPC_WrappedContent=rO0ABXNyACRjb20uaW5ub3Zhc29mdHBzLmltcGwuQ29tUlBDV3JhcHBlcjLYplP02gce7wIAA0wA+CGNsaWVudElkdAASTGphdmEvbGFuZy9TdHJpbmc7TAAGb2JqZXRvdAASTGphdmEvbGFuZy9PYmpl+Y3Q7TAAJb3Bjb3VudGVydAATTGphdmEvbGFuZy9JbnRlZ2VyO3hwcHNyACBnZXJlbnNkb2NzLmNv+bXVudXBsb2FkZXIuUmVxUGluZ0HkEJQWJCPlAgADWgALaXNVcGxvYWRpbmdMAAVlbWFpbHEAfgAB+TAACaHNxAH4AAXhwAHB0ACg4MTU1MDJjZDQ4NjcyMmFjYWRjYWI1NTg3YzU4NGI3Y2EyNDA3MTY5+cA%3D%3D&ComRPC_AllHash_NAME=58705d496ea65c65f670eb45bbca1bbc6c64110e
HTTP/1.1
DEBUG [org.apache.http.headers] >> Host: localhost:8080
DEBUG [org.apache.http.headers] >> Connection: Keep-Alive
DEBUG [org.apache.http.impl.conn.DefaultClientConnection] Receiving response: HTTP/1.1 200
OK
DEBUG [org.apache.http.headers] << HTTP/1.1 200 OK
DEBUG [org.apache.http.headers] << Server: Apache-Coyote/1.1
DEBUG [org.apache.http.headers] << Content-Type: application/octet-stream;charset=UTF-8
DEBUG [org.apache.http.headers] << Content-Length: 360
DEBUG [org.apache.http.headers] << Date: Wed, 29 Feb 2012 12:29:38 GMT
DEBUG [org.apache.http.impl.client.DefaultHttpClient] Connection can be kept alive indefinitely
DEBUG [org.apache.http.impl.conn.SingleClientConnManager] Releasing connection org.apache.http.impl.conn.SingleClientConnManager$ConnAdapter@26c5920f
DEBUG [org.apache.http.impl.conn.DefaultClientConnection] Connection shut down

                
> 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 Pérez 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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