Making a DNS query in Ruby from scratch

Hello! A while back I wrote a post about how to write a toy DNS resolver in Go. In that post I left out “how to generate and parse DNS queries” because I thought it was boring, but a few people pointed out that they did not know how to parse and generate DNS queries and they were interested in how to do it. This made me curious – how much work is it do the DNS parsing? It turns out we can do it in

[ohbarye]

RubyでゼロからDNSクエリを作成してUDPソケットで送信、レスポンスをparseして表示する。クエリが正しいかの答え合わせはWiresharkでできる