XML : Java: Connection timed out while posting xml org.apache.commons.httpclient.HttpMethodDirector executeWithRetry

The below code works fine when I am outside client network.

  Dec 29, 2015 2:34:26 PM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry  INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection timed out: connect  Dec 29, 2015 2:34:26 PM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry  INFO: Retrying request  java.net.ConnectException: Connection timed out: connect      at java.net.DualStackPlainSocketImpl.connect0(Native Method)      at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)      at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)      at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)      at java.net.AbstractPlainSocketImpl.connect(Unknown Source)