try {
        val plan = routePlanner.plan()

        if (!plan.isReady) {
          val tcpConnectResult = plan.connectTcp()
          val connectResult =
            when {
              tcpConnectResult.isSuccess -> plan.connectTlsEtc()
              else -> tcpConnectResult
            }

          val (_, nextPlan, failure) = connectResult

          if (failure != null) throw failure
          if (nextPlan != null) {

    }

    private int returnCode;
    private String error;

    /**
     * Checks if the unregistration was successful.
     *
     * @return true if successful
     */
    public boolean isSuccess() {
        return returnCode == 0;
    }

    /**
     * Gets a human-readable error description.
     *
     * @return the error description
     */
    public String getError() {

        if (connectResult == null) {
          connectResult = awaitTcpConnect(awaitTimeoutNanos, TimeUnit.NANOSECONDS) ?: continue
        }

        if (connectResult.isSuccess) {
          // We have a connected TCP connection. Cancel and defer the racing connects that all lost.
          cancelInFlightConnects()

    /**
     * Check if negotiation was successful
     *
     * @return true if successful, false otherwise
     */
    public boolean isSuccess() {
        return status == 0;
    }

    /**
     * Get negotiation status
     *
     * @return status code (0 = success)
     */
    public int getStatus() {
        return status;
    }

    /**
     * Set negotiation status
     *

    private long recommendedHeartbeatInterval;
    private String error;

    /**
     * Checks if the heartbeat was successful.
     *
     * @return true if successful
     */
    public boolean isSuccess() {
        return returnCode == 0;
    }

    /**
     * Gets the sequence number.
     *
     * @return the sequence number
     */
    public long getSequenceNumber() {
        return sequenceNumber;

    private byte[] contextHandle;
    private String error;

    /**
     * Checks if the registration was successful.
     *
     * @return true if successful
     */
    public boolean isSuccess() {
        return returnCode == 0;
    }

    /**
     * Gets a human-readable error description.
     *
     * @return the error description
     */
    public String getError() {

    /**
     * Determines if the request was processed successfully.
     *
     * @return true if no error occurred during processing (error is null), false otherwise
     */
    public boolean isSuccess() {
        return error == null;
    }

     */
    public boolean isSuccess() {
        return returnCode == ERROR_SUCCESS;
    }

    /**
     * Gets the error message for the current return code.
     *
     * @return a human-readable error message
     */
    public String getErrorMessage() {
        switch (returnCode) {
        case ERROR_SUCCESS:
            return "Success";
        case ERROR_INVALID_PARAMETER:

   *
   * The two values are independent: results can contain both (recoverable error), neither
   * (success), just an exception (permanent failure), or just a plan (non-exceptional retry).
   */
  data class ConnectResult(
    val plan: Plan,
    val nextPlan: Plan? = null,
    val throwable: Throwable? = null,
  ) {
    val isSuccess: Boolean
      get() = nextPlan == null && throwable == null
  }

     * The response sequence number should match the request sequence number.
     *
     * @return true if the response is valid
     */
    public boolean isValidResponse() {
        return isSuccess() && responseSequenceNumber == sequenceNumber;
    }

    @Override
    protected void encodeWitnessParameters(NdrBuffer buf) throws NdrException {
        // Encode input parameters for WitnessHeartbeat