if ( this.dialectRevision == 0x0311 && negotiateContextOffset != 0 && negotiateContextCount != 0 ) {
            int ncpos = getHeaderStart() + negotiateContextOffset;
            NegotiateContextResponse[] contexts = new NegotiateContextResponse[negotiateContextCount];
            for ( int i = 0; i < negotiateContextCount; i++ ) {
                int type = SMBUtil.readInt2(buffer, ncpos);