org.apache.http.ConnectionClosedException: Connection closed exception

[hound]

When I am making API calls to zabbix 3.0 through Java, i am getting a org.apache.http.ConnectionClosedException: Connection closed exception.
But with zabbix 2.4 it works just fine. Here is the code

import javax.net.ssl.*;
import org.apache.http.client.methods.*;
import org.apache.http.conn.ssl.*;
import org.apache.http.impl.client.*;
import org.apache.http.impl.nio.client.*;
import org.apache.http.nio.conn.ssl.SSLIOSessionStrategy;
import org.apache.http.*;
import org.apache.http.entity.StringEntity;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.HttpHost;
import org.apache.http.client.config.RequestConfig;
import java.util.concurrent.Future;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.nio.client.CloseableHttpAsync Client;
import org.apache.http.util.EntityUtils;


public class asynctest {


public static void main(String[] args){

SSLContext sslContext =null;
try {
sslContext = SSLContext.getDefault();
} catch(Exception e) {

}

String[] prots = new String[2];
prots[0] = "TLSv1";
prots[1] = "SSLv3";


SSLIOSessionStrategy sslSessionStrategy = new SSLIOSessionStrategy(
sslContext,
prots,
null,
SSLIOSessionStrategy.ALLOW_ALL_HOSTNAME_VERIFIER);
// SSLIOSessionStrategy sslSessionStrategy = new SSLIOSessionStrategy(sslContext);

HttpHost proxy = new HttpHost("myproxy.com", 8080);
HttpAsyncClientBuilder builder = HttpAsyncClients.custom();
builder.setSSLStrategy(sslSessionStrategy);
builder.setProxy(proxy);
CloseableHttpAsyncClient client = builder.build();


client.start();

String requestBodyJson = "{\"jsonrpc\": \"2.0\",\"method\": \"user.login\",\"params\": {\"user\": \"###\",\"password\": \"###\"},\"id\" : 1}";

//"Content-Type" -> "application/json-rpc"


HttpPost request = new HttpPost("myzabbix.com/api_jsonrpc.php");

StringEntity entity = null;

try {
entity = new StringEntity(requestBodyJson);
} catch(Exception e) {}

request.setEntity(entity);
request.addHeader("Content-Type","application/json");
System.out.println("\nStarting!");
Future<HttpResponse> response = client.execute(request, null);
System.out.println("\nReturned!");
if(response == null) {
System.out.println("Failed!");
} else {
try {
System.out.println("\n\nResponse: " + response.get().getStatusLine().getStatusCode());
System.out.println("\n\nResponse: " + EntityUtils.toString(response.get().getEntity()));
//} catch(Exception e) { e.printStackTrace(); }
} catch(Exception e) { System.out.println("Exception! " + e.getMessage()); }
}

}

}

Any help will be appreciated

[burn1024]

check web server logs