Kazy

I'm trying to produce a simple (although its definately not very simple to code) DNS client that will resolve a domain name. My problem is, I get back data in binary. I've converted the binary bits into hex so I can at least figure out what I got back, now I'm trying to figure out how to change either the binary bits or the hex I created into something I can print regular values to the screen. I'm not sure if anyone is familiar with the RFC for DNS (http://www.ietf.org/rfc/rfc1035.txt), but does anyone know how I can convert binary/hex to something printf would be able to print out? My question may not be so clear, if so I'd be glad to give more info. Thanks!

nnxion

Instead of coding it all your self, you can use the sockets given to you by your OS.
See http://beej.us/guide/bgnet/output/ht...calls.html#dns for more. information

__________________
"Employ your time in improving yourself by other men's writings, so that you shall gain easily what others have labored hard for."
-- Socrates

DaWei

You can convert binary to textually-encoded hex very simply. Hex is just a representation of binary values, nothing distinct in content/value, and not all those values print well when used directly.

__________________
Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code.
Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

para

I've done this myself, request a normal/reverse resolution from a list of DNS servers. It's not too difficult, but it can take a while to get it working mainly because I found the documentation not so straight forward. I used a packet sniffer called Ethereal, which used in conjunction the RFC, and I was able to easily decipher what bits meant what and how to decode it.
I hope that helps.