Introduction - If you have any usage issues, please Google them yourself
calculated checksum checksum algorithm Description : To ensure the network transmission of data reliability, in many of the agreements are set up and calibration, for example : IPv4, ICMPv4, IGMPV4, ICMPv6. UDP and TCP so on. Calculating checksum algorithm called the Internet checksum algorithm, the simple answer is : as has been the calibration data for 16 cumulative, and then take the anti-code, if the data byte length of the odd, data will make up the tail of a 0 byte to make up even. As the input file is read into the data can not be directly calculated checksum meet the conditions, So, the first right from the document read into the buffer data preprocessing, read into the buffer zone that is overlooked spaces. As the cumulative basis for the 16, so every time from the buffer read out