this.commonCapabilities = r.getCapabilities() & this.capabilities;

        if ( ( this.commonCapabilities & Smb2Constants.SMB2_GLOBAL_CAP_ENCRYPTION ) != 0 ) {
            this.supportsEncryption = tc.getConfig().isEncryptionEnabled();
        }

        if ( this.selectedDialect.atLeast(DialectVersion.SMB311) ) {
            if ( !checkNegotiateContexts(r, this.commonCapabilities) ) {
                return false;
            }