int start = bufferIndex;
        int structureSize = SMBUtil.readInt2(buffer, bufferIndex);
        if ( structureSize == 9 ) {
            return this.readErrorResponse(buffer, bufferIndex);
        }
        else if ( structureSize != 17 ) {
            throw new SMBProtocolDecodingException("Expected structureSize = 17");
        }

        int start = bufferIndex;
        int structureSize = SMBUtil.readInt2(buffer, bufferIndex);
        if ( structureSize == 9 ) {
            return super.readErrorResponse(buffer, bufferIndex);
        }
        else if ( structureSize != 49 ) {
            throw new SMBProtocolDecodingException("Expected structureSize = 49");
        }
        bufferIndex += 4;

        int start = this.headerStart = bufferIndex;
        bufferIndex += readHeaderWireFormat(buffer, bufferIndex);
        if ( isErrorResponseStatus() ) {
            bufferIndex += readErrorResponse(buffer, bufferIndex);
        }
        else {
            bufferIndex += readBytesWireFormat(buffer, bufferIndex);
        }

        this.length = bufferIndex - start;
        int len = this.length;