Firefox の通信キャプチャ シナリオ 1-1 の通信を確認します。 まずは最初の Web Browser → DoH リクエストです。 Host: TEST_SERVER Accept: application/dns-message Accept-Encoding: Content-Type: application/dns-message Content-Length: 128 Cache-Control: no-store, no-cache Connection: keep-alive Pragma: no-cache 0x00 0x00 0x01 0x00 0x00 0x01 0x00 0x00 | ....... 0x00 0x00 0x00 0x01 0x03 0x77 0x77 0x77 | ......ww 0x06 0x67 0x6f 0x6f 0x67 0x6c
![DNS over HTTPS(DoH)の気になる Web Browser 実装を確認](https://cdn-ak-scissors.b.st-hatena.com/image/square/6349e4207a84b4ad166b1ccabb09e531cf32152b/height=288;version=1;width=512/https%3A%2F%2Fs.yimg.jp%2Fimages%2Ftecblog%2F2022-H1%2Fdoh%2Fogp_20220815T120237.png)