08-10-2007
how i prepare a c++ code(c code) for implementing my own protocol format
helo my protocol format is given below
{ destno,mode,no.of packet,pktsize,,pktno,textsize,CRC}
description:- { is starting flag
destno - 4bytes
mode - 1 byte
no.of pkt - 4byes
pktsize - 6 bytes
pktno 3 bytes
text size 6 bytes
CRC is 2 bytes
i want to write c++ code(or c code) to prepare this packet and after this
i want to transfer this packet over serial port.
after that how i write a code to receive this packet from serial port and how i extract this packet after receiving the packet.
Regards,
Amit
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LEARN ABOUT DEBIAN
ldns_pkt_edns_extended_rcode
ldns(3) Library Functions Manual ldns(3)
NAME
ldns_pkt_edns, ldns_pkt_edns_udp_size, ldns_pkt_edns_extended_rcode, ldns_pkt_edns_version, ldns_pkt_edns_z, ldns_pkt_edns_data,
ldns_pkt_set_edns_udp_size, ldns_pkt_set_edns_extended_rcode, ldns_pkt_set_edns_version, ldns_pkt_set_edns_z, ldns_pkt_set_edns_data-
SYNOPSIS
#include <stdint.h>
#include <stdbool.h>
#include <ldns/ldns.h>
bool ldns_pkt_edns(const ldns_pkt *packet);
uint16_t ldns_pkt_edns_udp_size(const ldns_pkt *packet);
uint8_t ldns_pkt_edns_extended_rcode(const ldns_pkt *packet);
uint8_t ldns_pkt_edns_version(const ldns_pkt *packet);
uint16_t ldns_pkt_edns_z(const ldns_pkt *packet);
ldns_rdf* ldns_pkt_edns_data(const ldns_pkt *packet);
void ldns_pkt_set_edns_udp_size(ldns_pkt *packet, uint16_t s);
void ldns_pkt_set_edns_extended_rcode(ldns_pkt *packet, uint8_t c);
void ldns_pkt_set_edns_version(ldns_pkt *packet, uint8_t v);
void ldns_pkt_set_edns_z(ldns_pkt *packet, uint16_t z);
void ldns_pkt_set_edns_data(ldns_pkt *packet, ldns_rdf *data);
DESCRIPTION
ldns_pkt_edns() returns true if this packet needs and EDNS rr to be sent. At the moment the only reason is an expected packet size larger
than 512 bytes, but for instance dnssec would be a good reason too.
packet: the packet to check
Returns true if packet needs edns rr
ldns_pkt_edns_udp_size() return the packet's edns udp size
packet: the packet
Returns the size
ldns_pkt_edns_extended_rcode() return the packet's edns extended rcode
packet: the packet
Returns the rcode
ldns_pkt_edns_version() return the packet's edns version
packet: the packet
Returns the version
ldns_pkt_edns_z() return the packet's edns z value
packet: the packet
Returns the z value
ldns_pkt_edns_data() return the packet's edns data
packet: the packet
Returns the data
ldns_pkt_set_edns_udp_size() Set the packet's edns udp size
packet: the packet
s: the size
ldns_pkt_set_edns_extended_rcode() Set the packet's edns extended rcode
packet: the packet
c: the code
ldns_pkt_set_edns_version() Set the packet's edns version
packet: the packet
v: the version
ldns_pkt_set_edns_z() Set the packet's edns z value
packet: the packet
z: the value
ldns_pkt_set_edns_data() Set the packet's edns data
packet: the packet
data: the data
AUTHOR
The ldns team at NLnet Labs. Which consists out of Jelte Jansen and Miek Gieben.
REPORTING BUGS
Please report bugs to ldns-team@nlnetlabs.nl or in our bugzilla at http://www.nlnetlabs.nl/bugs/index.html
COPYRIGHT
Copyright (c) 2004 - 2006 NLnet Labs.
Licensed under the BSD License. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
SEE ALSO
ldns_pkt. And perldoc Net::DNS, RFC1034, RFC1035, RFC4033, RFC4034 and RFC4035.
REMARKS
This manpage was automaticly generated from the ldns source code by use of Doxygen and some perl.
30 May 2006 ldns(3)