<div class="n-demo"><div class="n-head"><strong>CLIENT HELLO VISIBILITY</strong><span>LIVE TRACE</span></div><div class="n-stage"><div class="ech"><div class="ech-row"><span>PLAIN</span><div class="n-box mono">SNI: private.test</div><b>VISIBLE</b></div><div class="ech-row"><span>ECH</span><div id="ech-inner" class="n-box mono">inner: private.test</div><b id="ech-view">SEALED</b></div></div></div><div class="n-foot">tap to step · auto replay</div></div>
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let sealed=true;function advance(){sealed=!sealed;document.getElementById('ech-inner').textContent=sealed?'outer: public.test / inner: [sealed]':'inner: private.test';document.getElementById('ech-inner').classList.toggle('n-on',sealed);document.getElementById('ech-view').textContent=sealed?'SEALED':'BEFORE'}
const clickTarget=document.querySelector('.n-demo');if(clickTarget&&typeof advance==='function'){advance();const timer=setInterval(advance,1050);clickTarget.addEventListener('pointerdown',()=>{clearInterval(timer);advance()})}