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/**
 * Waffle (https://github.com/dblock/waffle)
 *
 * Copyright (c) 2010 - 2014 Application Security, Inc.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Application Security, Inc.
 */
package waffle.util;

import javax.servlet.http.HttpServletRequest;

import com.google.common.base.Joiner;

/**
 * @author dblock[at]dblock[dot]org
 */
public final class NtlmServletRequest {

    /**
     * Returns a unique connection id for a given servlet request.
     * 
     * @param request
     *            Servlet request.
     * @return String.
     */
    public static String getConnectionId(final HttpServletRequest request) {
        return Joiner.on(":").useForNull("")
                .join(NtlmServletRequest.getRemoteHost(request), Integer.valueOf(request.getRemotePort()));
    }

    private static String getRemoteHost(final HttpServletRequest request) {
        return request.getRemoteHost() == null ? request.getRemoteAddr() : request.getRemoteHost();
    }

    private NtlmServletRequest() {
        // Prevent Instantiation of object
    }

}