[jboss-user] [EJB 3.0] - Stateless Pooling In JBoss AS.

[paata lominadze]

paata lominadze [http://community.jboss.org/people/grdzeli_kaci] created the discussion

"Stateless Pooling In JBoss AS."

To view the discussion, visit: http://community.jboss.org/message/535357#535357

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hi all,
I have strange problem.

My Env:
1. OS                         Sun Solaris Sparc
2.Application Server   jboss-4.2.3.GA
3.java                        Oracle JRockit(R) version "1.6.0_05"
4.Ext. Lib.                   Apache http Client ( http://hc.apache.org/httpclient-3.x/ http://hc.apache.org/httpclient-3.x/)

I have one stateless session bean which sends SMS Message to mobile using http client.
my session bean looks like :

@Stateless
@Remote(CommonFasade.class)
public class CommonFasadeBean implements CommonFasade {

    private HttpClient httpClient = null;
    public HttpClient getHttpClient() {
        if (httpClient == null) {

            SimpleHttpConnectionManager manager = new SimpleHttpConnectionManager();
            manager.getParams().setConnectionTimeout(5000);
            manager.getParams().setSoTimeout(5000);

            httpClient = new HttpClient(manager);
        }
        return httpClient;
    }

    public void sendSMS(String fullSms, String phone, String from) {
        HttpClient httpClient = getHttpClient();
        phone = Utils.trimPhone(phone);
        phone = getPhone(phone);
        if (phone == null) {
            return;
        }
        String sendToPhone = null;
        switch (phone.length()) {
        case 8:
            sendToPhone = "%s2B995" + phone;
            break;
        case 9:
            sendToPhone = "%s2B995" + phone.substring(1);
            break;
        default:
            return;
        }
        String url = " http://192.168.19.194:13013/cgi-bin/sendsms?from= http://192.168.19.194:13013/cgi-bin/sendsms?from=" + from
                + "&username=1&password=1&to=" + sendToPhone + "&text=%s";
        long sc = -999;

        try {

            for (String sms : prepareSmsList(fullSms)) {
                GetMethod method = new GetMethod(String.format(url, "%", sms));
                try {
                    sc = httpClient.executeMethod(method);
                    if (sc == HttpStatus.SC_ACCEPTED) {
                        String response = method.getResponseBodyAsString();

                        if (response.toLowerCase().indexOf("sent") != -1) {
                            logSMS(sms, phone, from);
                        }
                    }
                } finally {
                    method.releaseConnection();
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }



this code worked for tree years, but problem appeard some days ago.
every second or third day my jboss application server crashes.

when i trying to find promlem i found this :
1. into solaris :
"netstat -an|grep 192.168.19.194|wc -l  (this is SMS sender HTTP server)"
     and result was : 12678

this is client socket connections from my jboss as, all of them is on a CLOSE_WAIT state.
After this when i looking into the jmx-console i found this :

 http://community.jboss.org/servlet/JiveServlet/showImage/2469/MBeanView.jpeg  http://community.jboss.org/servlet/JiveServlet/downloadImage/2469/450-264/MBeanView.jpeg 



My question is why i have 12826 stateless session bean isntances into as ?
Into my jboss as stateless session pool config max size is 30.


i think that something changed into  HTTP Server or into network.
but i need workarount of this porblem .
is this pattern right for using http clients ? Maybe it will be more correct to use MDB for this ?


when current size of my stateless session bean achieve 40000 the jboss as going down.

can anybody help me what should i do ???

___________________
Regards,
Paata Lominadze.

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