Getting “java.io.IOException: An existing connection was forcibly closed by the remote host”

I am making rest call to IBM Cloud BPM. Some times calls are working fine.But sometimes it is giving following error.

java.io.IOException: An existing connection was forcibly closed by the remote host.

java.io.IOException: An existing connection was forcibly closed by the remote host
    at sun.nio.ch.SocketDispatcher.read0(Native Method)
    at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43)
    at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)

Can any one help me on how to solve this issue.

Any help is greatly appreciated.