}
            used -= result;
            beg_idx = ( beg_idx + result ) % pipe_buf.length;
        }

        return result;
    }
    public int available() throws IOException {
        if( file.log.level >= 3 )
            file.log.println( "Named Pipe available() does not apply to TRANSACT Named Pipes" );
        return 0;
    }
    int receive( byte[] b, int off, int len ) {
        int i;

         * available. That API is accessed via reflection to make this independent
         * of the runtime JRE
         */
        if ( EXT_GSS_CONTEXT_CLASS == null || INQUIRE_SEC_CONTEXT == null || INQUIRE_TYPE_SESSION_KEY == null ) {
            throw new SmbException("ExtendedGSSContext support not available from JRE");
        }

            CONTEXT_CACHE.put(context, cached);
        }
        return cached;
    }


    /**
     * @param applyMutations
     * @return configurations available for running
     * 
     */
    public synchronized static Map<String, Map<String, String>> getConfigs ( String[] applyMutations ) {
        Map<String, Map<String, String>> configs = new HashMap<>();

        }
    }

/** 
 * Retrieves the local host address.
 *
 * @throws UnknownHostException This is not likely as the IP returned
 *                    by <code>InetAddress</code> should be available
 */ 

    public static NbtAddress getLocalHost() throws UnknownHostException {
        return localhost;
    }
    public static Name getLocalName() {
        return localhost.hostName;
    }

        if( len > 0xFFFF ) {
            throw new IOException( "write too large: " + len );
        } else if( off < 4 ) {
            throw new IOException( "NetBIOS socket output buffer requires 4 bytes available before off" );
        }

        off -= 4;

        b[off + 0] = (byte)SessionServicePacket.SESSION_MESSAGE;
        b[off + 1] = (byte)0x00; 
        b[off + 2] = (byte)(( len >> 8 ) & 0xFF ); 

        int start = bufferIndex;

        // Read total allocation units.
        this.alloc = SMBUtil.readInt8(buffer, bufferIndex);
        bufferIndex += 8;

        // read caller available allocation units
        this.free = SMBUtil.readInt8(buffer, bufferIndex);
        bufferIndex += 8;

        // skip actual free units
        bufferIndex += 8;

     * technically not correct however the server 8 byte challenge would be required to compute and compare the password
     * hashes but that it not available with this method.
     */
    @Override
    public boolean equals ( Object obj ) {
        if ( super.equals(obj) ) {
            if ( ! ( obj instanceof NtlmPasswordAuthentication ) ) {

 * is a basic description of the algorithm. For a more complete description
 * we recommend reading the section on Access Control in Keith Brown's
 * "The .NET Developer's Guide to Windows Security" (which is also
 * available online).
 * <p>
 * Direct ACEs are evaluated first in order. The SID of the user performing
 * the operation and the desired access bits are compared to the SID

                }
                else if ( last == null ) {
                    // don't have enough credits/space for the first request, block until available
                    // for space there is nothing we can do, callers need to make sure that a single message fits

                    try {
                        long timeout = getResponseTimeout(chain);

        this.authProperty = null;
        this.authMethod = null;
        try ( InputStream errorStream = this.connection.getErrorStream() ) {
            if ( errorStream != null && errorStream.available() != 0 ) {
                byte[] buf = new byte[1024];
                while ( ( errorStream.read(buf, 0, 1024) ) != -1 );
            }
            String authHeader;
            if ( response == HTTP_UNAUTHORIZED ) {