}
        updates = 0;

        return b;
    }

    /**
     * Performs MAC signing of the SMB.  This is done as follows.
     * The signature field of the SMB is overwritted with the sequence number;
     * The MD5 digest of the MAC signing key + the entire SMB is taken;
     * The first 8 bytes of this are placed in the signature field.
     *
     * @param data The data.

 * <code>myworkgroup</code> happends to be a workgroup(which is indeed
 * suggested by the name) the <code>list</code> method will return
 * a list of servers that have registered themselves as members of
 * <code>myworkgroup</code>.
 * </td></tr>
 * 
 * <tr><td width="20%"><code>smb1://</code></td><td>
 * Just as <code>smb1://server/</code> lists shares and

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.util.transport;


/**
 * 
 *
 */
public interface Request extends Message {

    /**
     * @return number of credits this request requires
     */
    int getCreditCost ();


    /**
     * @param credits
     */
    void setRequestCredits ( int credits );


    /**

/**
 * @author mbechler
 *
 */
public interface SMBSigningDigest {

    /**
     * Performs MAC signing of the SMB. This is done as follows.
     * The signature field of the SMB is overwritten with the sequence number;
     * The MD5 digest of the MAC signing key + the entire SMB is taken;
     * The first 8 bytes of this are placed in the signature field.
     *
     * @param data
     *            The data.
     * @param offset

     * return 0 for streams connected to regular files. However, a
     * stream created from a Named Pipe this method will query the server using a
     * "peek named pipe" operation and return the number of available bytes
     * on the server.
     */
    @Override
    public int available () throws IOException {
        try ( SmbFileHandleImpl fd = this.handle.ensureOpen();

    }


    /**
     * Reads up to len bytes of data from this input stream into an array of bytes.
     * 
     * @param b
     * @param off
     * @param len
     * @return number of bytes read
     *
     * @throws IOException
     *             if a network error occurs
     */
    public int readDirect ( byte[] b, int off, int len ) throws IOException {
        if ( len <= 0 ) {

                this.origin_ctx = null;
            }
        }
    }


    /**
     * Get members of the group represented by this SID, if it is one.
     * 
     * @param authorityServerName
     * @param tc
     * @param flags
     * @return the members of the group
     * @throws IOException
     */

    /**
     * Read bytes from the input stream into a buffer
     * 
     * @param in
     * @param b
     * @param off
     * @param len
     * @return number of bytes read
     * @throws IOException
     */
    public static int readn ( InputStream in, byte[] b, int off, int len ) throws IOException {
        int i = 0, n = -5;

        if ( off + len > b.length ) {

    public SMB1SigningDigest ( byte[] macSigningKey ) {
        this.digest = Crypto.getMD5();
        this.macSigningKey = macSigningKey;
    }


    /**
     * Construct a digest with a non-zero starting sequence number
     * 
     * @param macSigningKey
     * @param initialSequence
     */
    public SMB1SigningDigest ( byte[] macSigningKey, int initialSequence ) {
        this.digest = Crypto.getMD5();

        return this.address;
    }


    @Override
    public String getRemoteHostName () {
        return this.tconHostName;
    }


    /**
     *
     * @return number of sessions on this transport
     */
    public int getNumSessions () {
        return this.sessions.size();
    }


    @Override
    public int getInflightRequests () {