@rtpa25

Building a simple http server to query dns server

Jul 14, 2024 · 4 min read · We are almost at the end, in this blog we will be building a simple http server which will resolve our DNS queries by querying the underlying UDP server we built, providing us with an easy to use interface. Honestly we are just going to setup a bare ...

Building the DNS cache

Jul 14, 2024 · 5 min read · Before jumping into the code for the cache, let's first breakdown what exactly what we need from the cache class And also how are we going to cater to all those use-cases Requirements set answers to all question names and record types individually t...

Testing the recursive resolver

Jul 14, 2024 · 7 min read · This will be very straightforward. So without any delay head over to src/udp-server.test.ts Initial setup Add all required imports Start up a udpSocket on udp4 TEST_PORT & TEST_HOST signify the host and port on which our actual udp server is runni...

Building the recursive resolver

Jul 14, 2024 · 11 min read · We have already explored the outline of our UDP server, now time comes to actually build the resolver which will resolve DNS queries. f you don't have the codebase yet:https://github.com/rtpa25/dns-server For this before jumping into code, let's unde...

Finally building out the DNS server

Jul 14, 2024 · 5 min read · Now that our parser and builder is ready and tested, let's move on to building the UDP server that is actually going to resolve DNS queries for us if you don't have the codebase yet:https://github.com/rtpa25/dns-server In this blog we will see and un...