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DNS resolver and DNS C library with DoH, DoT support, Python interface to DNS C library
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b17v134/dns
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# dns
The sample code to use the dns client:
DNS over UDP example:
#include <dns/dns.h>
#include <stdio.h>
int main(void)
{
struct request r = { "10.0.2.3", 53, udp, "github.com", DNS_TYPE_A, DNS_CLASS_IN };
struct response resp;
int result = resolv(r, &resp);
if (result != 0) {
perror("error");
} else {
print_response(resp);
free_response(resp);
}
return 0;
}
DNS over TLS example:
#include <dns/dns.h>
#include <stdio.h>
int main(void)
{
struct request r = { "dns.server", 853, tls, "github.com", DNS_TYPE_A, DNS_CLASS_IN, "rootCA.crt", "certificate.pem" };
struct response resp;
int result = resolv(r, &resp);
if (result != 0) {
perror("error");
} else {
print_response(resp);
free_response(resp);
}
return 0;
}
DNS over HTTPS example:
#include <dns/dns.h>
#include <stdio.h>
int main(void)
{
struct request r = { "dns.server", 443, https, "github.com", DNS_TYPE_A, DNS_CLASS_IN, "rootCA.crt", "certificate.pem" };
struct response resp;
int result = resolv(r, &resp);
if (result != 0) {
perror("error");
} else {
print_response(resp);
free_response(resp);
}
return 0;
}
The sample code to use the python package:
DNS over UDP example:
import dns
request = dns.Request()
request.Address = "10.0.2.3"
request.Port = 53
request.Protocol = dns.Protocol.UDP
request.Qname = "github.com"
request.Type = dns.DNS_TYPE_A
request.Class = dns.Class.IN
response = dns.Resolv(request)
print(response)
DNS over TLS example:
import dns
request = dns.Request()
request.Address = "dns.server"
request.Port = 853
request.Protocol = dns.Protocol.TLS
request.Qname = "github.com"
request.Type = dns.DNS_TYPE_A
request.Class = dns.Class.IN
request.Ca = "rootCA.crt"
request.Certificate = "certificate.pem"
response = dns.Resolv(request)
print(response)
DNS over HTTPS example:
import dns
request = dns.Request()
request.Address = "dns.server"
request.Port = 443
request.Protocol = dns.Protocol.HTTPS
request.Qname = "github.com"
request.Type = dns.DNS_TYPE_A
request.Class = dns.Class.IN
request.Ca = "rootCA.crt"
request.Certificate = "certificate.pem"
response = dns.Resolv(request)
print(response)
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