I need to send push notification using a control panel from server.

The server is a Linux virtual Cloud box which is behind a proxy. The control panel is designed using J2EE with Tomcat

I am using JAVA based <https://github.com/notnoop/java-apns/releases> API for push

The code

```
ApnsService service = APNS.newService().withSandboxDestination().withCert("mycert.p12", "mypassword").build();
String messageTobeSent = APNS.newPayload()
    .alertBody("Message with badge 2")
    .badge(2)
    .alertTitle("Message with badge 2")
    .sound("ding.wav")
    .build();
service.push("d81f0080ed7bf05ac96261dc1805fbf00230073f606f1388a644469b1893446f",  messageTobeSent, new Date());

```

I am getting an error **Couldn't connect to APNS server**, My Questions are

1. Is this because of the proxy?
2. Does APNs works with proxy?
3. Will this library capable or connecting behind proxy?