jdns's Introduction

JDNS

JDNS is a Java DNS library that allows you to host a DNS Server and make DNS Requests.

Why JDNS

InetAddress is great because it will auto get the IP address from any hostname, however this isnt always a great option when it comes to security. This is because it will make requests to your DNS server posibbly bypassing SOCKS proxies. This project will allow you to make requests to specific servers not what is defined by the host and potentially over SOCKS5.

Supported Records

I have not been able to test every record type, so some may function but I'm uncertain.

TYPE	Value
A	Working
AAAA	Working
NS	Working
CNAME	Working
SOA	Working
PTR	Working
MX	Working
TXT	Working
SRV	Untested
CAA	Untested

Note

IQUERY (Inverse Query) is depricated in RFC-1035 and theirfore not implemented in this project

Usage

To start the DNS server this is the usage:

DnsServer server = new DnsServer();
//IF THE DOMAIN IS NOT IN OUR RECORDS USE THIS DNS SERVER
server.addServer(new InetSocketAddress(InetAddress.getByName("1.1.1.1"), 53));
//FALLBACK DNS SERVER - YOU CAN ADD AS MANY AS YOU WANT
server.addServer(new InetSocketAddress(InetAddress.getByName("1.0.1.0"), 53));
server.start(53);

//TO ADD RECORD
server.getRecordStore().add(new ARecord("google.com", DnsClass.IN, 300, InetAddress.getByName("127.0.0.1")));

To send a request you can do this:

server.send(request, new ResponseCallback(){
    @Override
    public void onResponse(ResponseEvent event){
        MessageBase response = event.getMessage();
    }
});

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