Passive STS

public ResponseToken getResponse(RequestToken request) throws Exception {

    if (request == null || request.getUserName() == null) {
        throw new Exception("Invalid request token. User credentials not provided");
    }

    RequestProcessor processor = null;
    ResponseToken responseToken = null;
    String soapfault = null;

    // Setting wreply url from sp config
    setReplyToURL(request);

    processor = RequestProcessorFactory.getInstance().getRequestProcessor(request.getAction());

    if (processor != null) {
        try {
            responseToken = processor.process(request);
        } catch (TrustException e) {
            soapfault = genFaultResponse(MessageContext.getCurrentMessageContext(), "Sender",
                    "InvalidRequest", e.getMessage(), "none").toStringWithConsume();
        }
    } else {
        soapfault = genFaultResponse(MessageContext.getCurrentMessageContext(), "Sender",
                "InvalidRequest", "Invalid Request", "none").toStringWithConsume();
    }

    if (responseToken == null) {
        responseToken = new ResponseToken();
    }

    if (soapfault != null) {
        responseToken.setResults(soapfault);
    }

    responseToken.setAuthenticated(true);
    if (request.getReplyTo() != null) {
        responseToken.setReplyTo(request.getReplyTo());
    } else {
        responseToken.setReplyTo(request.getRealm());
    }

    if (responseToken.getReplyTo() == null) {
        throw new Exception("ReplyTo address not found");
    }

    responseToken.setContext(request.getContext());

    return responseToken;
}