Hello friends, let me explain the situation.
I have a servlet redirecting outgoing GET/POST to another project on another
domain (some kind of proxy) whose job is to handle it and return some stuff
(params and a gif). Im using HttpClient 4.0.3 to do this.
There are multiple GET/POST sent by my app on startup, so I setup once a
ThreadSafeClientConnManager to handle multiple threads this way.
cm_params = new BasicHttpParams();
ConnManagerParams.setMaxTotalConnections(cm_params, 200);
ConnPerRouteBean connPerRoute = new ConnPerRouteBean();
HttpHost localhost = new HttpHost("locahost");
connPerRoute.setMaxForRoute(new HttpRoute(localhost), 50);
ConnManagerParams.setMaxConnectionsPerRoute(cm_params, connPerRoute);
SchemeRegistry schemeRegistry = new SchemeRegistry();
schemeRegistry.register(
new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
cm = new ThreadSafeClientConnManager(cm_params, schemeRegistry);
Then I create a new HttpClient with those params, which should be enough to
handle a bunch of request at the same time. Of course, I do this on public
void service() for every GET/POST but I use the same Httpclient object after
I created it.
httpclient = new DefaultHttpClient(cm, cm_params);
After that I build up my POST and send it via execute, with all the
requiered params and such triple verified.
HttpPost httpPost = new HttpPost(target+tmpString);
httpPost.setHeader("Host", request.getHeader("host"));
httpPost.setHeader("User-Agent", request.getHeader("user-agent"));
httpPost.setHeader("Accept-Encoding",
request.getHeader("accept-encoding"));
httpPost.setHeader("Accept", request.getHeader("accept"));
..etc..
UrlEncodedFormEntity urlEncodedFormEntity = new
UrlEncodedFormEntity(params);
urlEncodedFormEntity.setContentEncoding(HTTP.UTF_8);
httpPost.setEntity(urlEncodedFormEntity);
HttpResponse response = httpclient.execute(httpPost);
Finally I read the stream and handle the entities...
OutputStream os = res.getOutputStream();
InputStream is = response.getEntity().getContent();
byte[] buf = new byte[1024];
for(int n;(n=is.read(buf))!=-1;)
{
os.write(buf, 0, n);
}
// Make sure to close
is.close();
os.close();
// Flush entities just in case
EntityUtils.consume(urlEncodedFormEntity);
EntityUtils.consume(response.getEntity());
urlEncodedFormEntity.getContent().close();
response.getEntity().getContent().close();
So my problem is, the code is working perfectly well when I load my page.
There are 4 request sent (1 GET, 3 POST) correctly handled. Basicly
returning some params and 1 small gif that I print on my page.
But as soon I start to Stress Test my app, I.E. loading the same page in 4-5
tabs, my app seems to hang randomly whenever I execute multiple POST at the
same time. I thought I wouldn't have any problem even if I use the same
Httpclient object since I declared my ThreadSafeClientConnManager correctly
(I think?) so it should handle multiple thread.
Anyone know what I am doing wrong? If I load my tabs 1 by 1, it doesnt hang.
Just when I refresh more than 1 tab at the same time.
Anyone have a clue? :S (sry english isnt my first language ^^;)
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