CODEWITHSUNDEEP
google-chromehttpshttp2quichttp3
zpzhuang
zpzhuang

Reputation: 71

Why can't I access google with http3/quic?

Chrome has turned on the enable-quic switch ,but when i But when I visit google, it still uses http2 protocol ,how can I use the browser's http3/quic feature?

enable-quic http2 protocol

Upvotes: 7

Views: 5601

Answers (1)

Igor Afanasyev
Igor Afanasyev

Reputation: 326

Since HTTP/3 is still a relatively new protocol, browser may first use HTTP/1 or HTTP/2 when connecting to a server. The server may advertise support of HTTP/3 for subsequent connections. However, even after several requests, the browser may end up using HTTP/2 and TCP if QUIC handshake is delayed for some reason.

You may find more information here https://www.smashingmagazine.com/2021/09/http3-practical-deployment-options-part3/

You can try to force Chrome to use QUIC protocol on a specific domain by starting chrome from the command line

chrome --origin-to-force-quic-on=www.example.org:443

Upvotes: 7

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