}

            final ASN1Sequence vec = (ASN1Sequence) constructed.getBaseObject();

            final ASN1ObjectIdentifier spnego = (ASN1ObjectIdentifier) vec.getObjectAt(0);
            if (!SPNEGO_OID.equals(spnego)) {
                throw new IOException("Malformed SPNEGO token, OID " + spnego);
            }
            ASN1TaggedObject tagged = (ASN1TaggedObject) vec.getObjectAt(1);
            if (tagged.getTagNo() != 0) {