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250 lines
12 KiB
HTML
250 lines
12 KiB
HTML
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<h1 class="menu-title">Quinn</h1>
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<div id="content" class="content">
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<main>
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<h1 id="the-quic-protocol"><a class="header" href="#the-quic-protocol">The QUIC protocol</a></h1>
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<p><a href="https://en.wikipedia.org/wiki/QUIC">QUIC</a> is a general-purpose network protocol built on top of UDP,
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and <a href="https://www.rfc-editor.org/rfc/rfc9000.html">standardized</a> by the <a href="https://www.ietf.org/">IETF</a>. Although QUIC is still relatively new,
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the protocol is used for all connections from Chrome web browsers to the Google servers.</p>
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<p>QUIC solves a number of transport-layer and application-layer problems experienced by modern web applications.
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It is very similar to TCP+TLS+HTTP2, but implemented on top of UDP.
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Having QUIC as a self-contained protocol allows innovations which aren’t
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possible with existing protocols as they are hampered by legacy clients and middleboxes.</p>
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<p>Key advantages of QUIC over TCP+TLS+HTTP2 include:</p>
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<ul>
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<li>Improved connection establishment speed (0-rtt).</li>
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<li>Improved congestion control by moving congestion control algorithms into the user space at both endpoints.</li>
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<li>Improved bandwidth estimation in each direction to avoid congestion.</li>
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<li>Improved multiplexing without head-of-line blocking.</li>
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<li>Contains forward error correction (FEC).</li>
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</ul>
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<p>While QUIC's intentions are originally web-oriented, it offers interesting opportunities in other areas like game networking.
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One thing is for sure, QUIC has many great potentials and will serve us in the future with HTTP/3.</p>
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<p>In the upcoming chapter we will be discussing various aspects of QUIC also in relation to Quinn.</p>
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