thread blocked when using socks proxy

[jianing]

I notice that when create socket using socks proxy, java-apns set autoClose to be true.

When i try to close socket, thread go to a infinite loop.

                    proxySocket = new Socket(proxy);
                    proxySocket.connect(new InetSocketAddress(host, port), connectTimeout);
                    socket = ((SSLSocketFactory) factory).createSocket(proxySocket, host, port, true);
                    success = true;