static void resolveSids(final DcerpcHandle handle, final LsaPolicyHandle policyHandle, final SID[] sids) throws IOException {
        final MsrpcLookupSids rpc = new MsrpcLookupSids(policyHandle, sids);
        handle.sendrecv(rpc);
        switch (rpc.retval) {
        case 0:
        case NtStatus.NT_STATUS_NONE_MAPPED:
        case 0x00000107: // NT_STATUS_SOME_NOT_MAPPED
            break;
        default:

    }
    
    public WitnessRegisterResponse register(WitnessRegisterRequest request) throws IOException {
        try {
            WitnessRegisterStub stub = new WitnessRegisterStub(request);
            handle.sendrecv(stub);
            return stub.getResponse();
        } catch (Exception e) {
            throw new IOException("Witness register RPC failed", e);
        }
    }
    

        DcerpcHandle handle = DcerpcHandle.getHandle("ncacn_np:" + getAddress().getHostAddress() + "[\\PIPE\\netdfs]", auth);
        try {
            rpc = new MsrpcDfsRootEnum(getServer());
            handle.sendrecv(rpc);
            if (rpc.retval != 0) {
                throw new SmbException(rpc.retval, true);
            }
            return rpc.getEntries();
        } finally {
            try {

                server = server + ":" + this.fileLocator.getPort();
            }
            try (DcerpcHandle handle = DcerpcHandle.getHandle("ncacn_np:" + server + "[\\PIPE\\srvsvc]", getContext())) {
                handle.sendrecv(rpc);
                if (rpc.retval != 0) {
                    throw new SmbException(rpc.retval, true);
                }
                aces = rpc.getSecurity();
                if (aces != null) {

				}
				break reqLoop
			}
			// Grab a send token.
		sendReq:
			select {
			case <-m.ctx.Done():
				m.addErrorNonBlockingClose(errResp, context.Cause(m.ctx))
				errState = true
				continue
			case <-pingTimer:
				if !m.doPing(errResp) {
					errState = true
					continue
				}
				goto sendReq
			case <-m.outBlock:
			}
			msg := message{
				Op:      OpMuxClientMsg,

		}(t)
		start := time.Now()
		if st.Requests != nil {
			defer close(st.Requests)
		}
		// Fill up queue.
		for sendReq {
			select {
			case st.Requests <- []byte("Hello"):
				time.Sleep(10 * time.Millisecond)
			default:
				sendReq = false
			}
		}
		cancel()
		<-serverCanceled
		t.Log("server cancel time:", time.Since(start))
		clientEnd := <-clientCanceled