HTTP/3 and QUIC

<div class="n-demo"><div class="n-head"><strong>QUIC STREAM ISOLATION</strong><span>LIVE TRACE</span></div><div class="n-stage"><div class="quic"><div class="quic-row"><span>STREAM A</span><div><i id="q0"></i><b id="lost">LOSS</b></div></div><div class="quic-row"><span>STREAM B</span><div><i id="q1"></i></div></div><p id="q-note">independent delivery</p></div></div><div class="n-foot">tap to step · auto replay</div></div>

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let step=0;function advance(){const widths=[[20,20],[35,45],[35,70],[62,95]];document.getElementById('q0').style.width=widths[step][0]+'%';document.getElementById('q1').style.width=widths[step][1]+'%';document.getElementById('lost').style.opacity=step===1||step===2?'1':'0';document.getElementById('q-note').textContent=step===1||step===2?'A waits · B continues':'independent delivery';step=(step+1)%4}
const clickTarget=document.querySelector('.n-demo');if(clickTarget&&typeof advance==='function'){advance();const timer=setInterval(advance,1050);clickTarget.addEventListener('pointerdown',()=>{clearInterval(timer);advance()})}