Dear all,
I set up named server, and my dig client can connect to the server
successfully. For a UDP packet, I wish to add an artificial rdataset to name
list of Additional Section. Note that this question may look similar to my
previous posts, but it is a total different question (I have solved the old
questions):
This is all I wrote so far:
dns_message_t *msg = client->message;
dns_namelist_t *section = &msg->sections[DNS_SECTION_ADDITIONAL];
dns_name_t *name = ISC_LIST_HEAD(*section);
if(name != NULL) {
dns_rdata_t myrdata = DNS_RDATA_INIT;
dns_rdataset_t myrdataset;
dns_rdatalist_t myrdatalist;
dns_rdata_init(&myrdata);
dns_rdataset_init(&myrdataset);
dns_rdatalist_init(&myrdatalist);
myrdatalist.rdclass = dns_rdataclass_in;
myrdatalist.type = dns_rdatatype_txt;
myrdatalist.ttl = 0;
unsigned char mydata[] = "abc";
myrdata.data = (unsigned char *)mydata;
myrdata.length = 4;
myrdata.rdclass = dns_rdataclass_in;
myrdata.type = dns_rdatatype_txt;
RUNTIME_CHECK(dns_rdatalist_tordataset(&myrdatalist,
&myrdataset) == ISC_R_SUCCESS);
ISC_LIST_PREPEND(name->list, &myrdataset, link); //segmentation
fault!
}
I am able to compile successfully without any warning. There was a
segmentation fault happened due to ISC_LIST_APPEND. Does anyone have an idea of
the error?
I apologize if this question should not be asked here. If so, can anyone
point me to a forum for asking the question? Thanks!
Regards,
Jun Xiang Tee
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