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HTTP/3 Support

April 9, 2025
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v0.29.0 adds support for HTTP/3, so connections to Pomerium can now use the latest web transport protocol. HTTP/3 (built on QUIC) brings speed and reliability improvements that your users will benefit from automatically:

  • Faster handshakes – QUIC’s efficient connection setup means quicker initial load times, especially on high-latency networks.

  • Improved performance – Eliminates head-of-line blocking issues present in HTTP/2. Multiple requests can fly in parallel without one slow request holding up others.

  • Resilience – Connections are more robust to packet loss, and session resumption is faster, making Pomerium feel snappier on spotty networks (e.g. mobile).

  • Transparent enablement – Pomerium will negotiate HTTP/3 with clients that support it (while seamlessly falling back to HTTP/2 for others). No special configuration needed — just upgrade and enjoy the throughput boost.

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