I don't know libc, so I don't know what functions libc has to compute (if any) the checksum. I did find this page, that has some sample code though... http://stackoverflow.com/questions/3737612/raw-socket-sendto-failed-using-c-on-linux Chris- On Thu, Feb 10, 2011 at 4:14 PM, Randi <nightdecoder@xxxxxxxxx> wrote: > Chris, optional means it can be enable or not, how to enable it and get > the header to verify the checksum. > > > On Thu, 2011-02-10 at 15:14 +1100, Chris Donovan wrote: >> Yes the checksum is for the header and data. >> Keep in mind that the checksum value is optional in ipv4, but required in ipv6. >> >> Chris- >> >> On Thu, Feb 10, 2011 at 2:41 PM, Randi <nightdecoder@xxxxxxxxx> wrote: >> > Hi All, >> > >> > Since UDP socket is not reliable, what the common way in user level to >> > check UDP communication's data for error (eg. malformed, corrupted, >> > etc.)? is the checksum field in the UDP header (struct udphdr) intended >> > to this problem? >> > >> > Randi > > -- To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
