This is necessary for bookkeeping when creating new streams. Correct framing requires that stream IDs are sequential on the socket, so we need to bundle assigning the ID with sending the `SYN_STREAM` frame.

## Connection Pool

    /**
     * @param tc
     * @param targetDomain
     * @param host
     * @param initialToken
     * @param doSigning
     * @return a new context
     * @throws SmbException
     */
    SSPContext createContext ( CIFSContext tc, String targetDomain, String host, byte[] initialToken, boolean doSigning ) throws SmbException;


    /**
     * @return subject associated with the credentials
     */

    LogStream log;

    public NtlmContext(NtlmPasswordAuthentication auth, boolean doSigning) {
        this.auth = auth;
        this.ntlmsspFlags = ntlmsspFlags |
                NtlmFlags.NTLMSSP_REQUEST_TARGET |
                NtlmFlags.NTLMSSP_NEGOTIATE_NTLM2 |
                NtlmFlags.NTLMSSP_NEGOTIATE_128;
        if (doSigning) {
            this.ntlmsspFlags |= NtlmFlags.NTLMSSP_NEGOTIATE_SIGN |

    /**
     * 
     * @return whether the server has singing enabled
     */
    boolean isSigningEnabled ();


    /**
     * 
     * @return whether the server requires signing
     */
    boolean isSigningRequired ();


    /**
     * @return whether the server supports DFS
     */
    boolean isDFSSupported ();


    /**
     * @param request
     */

    /**
     * Indicates datagram authentication.
     */
    public static final int NTLMSSP_NEGOTIATE_DATAGRAM_STYLE = 0x00000040;

    /**
     * Indicates that the LAN Manager session key should be used for
     * signing and sealing authenticated communication.
     */
    public static final int NTLMSSP_NEGOTIATE_LM_KEY = 0x00000080;

    /**
     * ??? According to spec this is a reserved bit and must be set to zero
     */

     * @param address
     * @param port
     * @param exclusive
     *            whether to acquire an unshared connection
     * @param forceSigning
     *            whether to enforce SMB signing on this connection
     * @return a transport connection to the target
     */
    SmbTransport getSmbTransport ( CIFSContext tc, Address address, int port, boolean exclusive, boolean forceSigning );


    /**

package jcifs.internal;


/**
 * @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

 * [Ok2Curl](https://github.com/mrmike/Ok2Curl): Convert OkHttp requests into curl logs.
 * [OkHttp AWS Signer](https://github.com/babbel/okhttp-aws-signer): AWS V4 signing algorithm for OkHttp requests
 * [okhttp-digest](https://github.com/rburgst/okhttp-digest): A digest authenticator for OkHttp.

     */
    int encode ( byte[] dst, int dstIndex );


    /**
     * @param digest
     */
    void setDigest ( SMBSigningDigest digest );


    /**
     * @return the signing digest
     */
    SMBSigningDigest getDigest ();


    /**
     * @return the associated response
     */
    CommonServerMessageBlockResponse getResponse ();


    /**
     * 

    /**
    * Indicates datagram authentication.
    */
    public static final int NTLMSSP_NEGOTIATE_DATAGRAM_STYLE = 0x00000040;

    /**
    * Indicates that the LAN Manager session key should be used for
    * signing and sealing authenticated communication.
    */
    public static final int NTLMSSP_NEGOTIATE_LM_KEY = 0x00000080;

    public static final int NTLMSSP_NEGOTIATE_NETWARE = 0x00000100;

    /**