Incomplete data received from servlet
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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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