34 lines
2.6 KiB
XML
34 lines
2.6 KiB
XML
<svg xmlns="http://www.w3.org/2000/svg" width="960" height="540" viewBox="0 0 960 540" role="img" aria-labelledby="title desc">
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<title id="title">WebSocket HTTP Upgrade Handshake</title>
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<desc id="desc">A browser and server upgrade an HTTP connection to WebSocket and then exchange frames.</desc>
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<rect width="960" height="540" fill="#f7f9fc"/>
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<text x="72" y="74" fill="#101828" font-family="Inter, Arial, sans-serif" font-size="34" font-weight="700">HTTP Upgrade to WebSocket</text>
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<text x="72" y="108" fill="#667085" font-family="Inter, Arial, sans-serif" font-size="16">The connection starts as HTTP, then switches protocols after the handshake.</text>
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<g font-family="Inter, Arial, sans-serif">
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<text x="139" y="260" fill="#101828" font-size="22" font-weight="700">Browser</text>
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<text x="126" y="290" fill="#667085" font-size="15">JavaScript WebSocket</text>
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<rect x="664" y="202" width="210" height="126" rx="18" fill="#ffffff" stroke="#d0d5dd"/>
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<text x="710" y="260" fill="#101828" font-size="22" font-weight="700">FastAPI Server</text>
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<text x="712" y="290" fill="#667085" font-size="15">/ws/{room}/{user}</text>
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<line x1="310" y1="214" x2="650" y2="214" stroke="#2563eb" stroke-width="4" marker-end="url(#arrow-blue)"/>
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<text x="350" y="194" fill="#344054" font-size="15" font-weight="700">1. HTTP GET + Upgrade: websocket</text>
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<line x1="650" y1="268" x2="310" y2="268" stroke="#12b76a" stroke-width="4" marker-end="url(#arrow-green)"/>
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<text x="376" y="250" fill="#344054" font-size="15" font-weight="700">2. 101 Switching Protocols</text>
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<line x1="310" y1="326" x2="650" y2="326" stroke="#7a5af8" stroke-width="4" stroke-dasharray="10 9" marker-end="url(#arrow-purple)"/>
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<line x1="650" y1="362" x2="310" y2="362" stroke="#7a5af8" stroke-width="4" stroke-dasharray="10 9" marker-end="url(#arrow-purple)"/>
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<text x="342" y="410" fill="#344054" font-size="15" font-weight="700">3. Full-duplex frames over the same TCP connection</text>
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</g>
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<defs>
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<marker id="arrow-blue" markerWidth="12" markerHeight="12" refX="10" refY="6" orient="auto">
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<path d="M2,2 L10,6 L2,10 Z" fill="#2563eb"/>
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</marker>
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<marker id="arrow-green" markerWidth="12" markerHeight="12" refX="10" refY="6" orient="auto">
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<path d="M2,2 L10,6 L2,10 Z" fill="#12b76a"/>
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</marker>
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<marker id="arrow-purple" markerWidth="12" markerHeight="12" refX="10" refY="6" orient="auto">
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<path d="M2,2 L10,6 L2,10 Z" fill="#7a5af8"/>
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</marker>
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</defs>
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</svg>
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