final boolean forceSigning) {
        this.transportContext = tc;

        this.signingEnforced = forceSigning || this.getContext().getConfig().isSigningEnforced();
        this.sessionExpiration = System.currentTimeMillis() + tc.getConfig().getSessionTimeout();

        this.address = address;
        this.port = port;
        this.localAddr = localAddr;

    }

    boolean isSignatureSetupRequired() throws SmbException {
        SMBSigningDigest cur = getDigest();
        if (cur != null) {
            return false;
        }
        if (this.transport.isSigningEnforced()) {
            return true;
        }
        return this.transport.getNegotiateResponse().isSigningNegotiated();
    }

    /**
     * @param digest
     *            the digest to set