Issue Create IdcClient Connection using idc protocol in 12c

I am able to connect local VM UCM using http protocol like:

    //connectionURL= "http://localhost:7777/cs/idcplg";

    IdcClientManager manager = new IdcClientManager();                

    IdcClient idcClient = manager.createClient(connectionURL);          

    idcClient.getConfig ().setProperty ("http.library", "oracle");          

    IdcContext userContext = new IdcContext(user,pass);

and be able to call GET_SEARCH_RESULTS idcServices.

But I cannot get connection using idc protocol:

IntradocClient idcClient = (IntradocClient) manager.createClient("idc://127.0.0.1:4444");

IdcContext userContext = new IdcContext(user);

idcClient.getConfig().setSocketTimeout(60000);

I got the following error:

oracle.stellent.ridc.protocol.ProtocolException: java.net.SocketTimeoutException: Read timed out

    at oracle.stellent.ridc.protocol.intradoc.HdaProtocol.readResponse(HdaProtocol.java:282)

    at oracle.stellent.ridc.IdcClient.sendRequest(IdcClient.java:201)