Add social URLs to http3 post

Author: pimterry

src/content/posts/http3-quic-open-source-support-nowhere.mdx

@@ -3,6 +3,10 @@ title: HTTP/3 is everywhere but nowhere
 date: '2025-03-12T16:00'
 cover_image: 'header-images/h-sign.jpg'
 tags: http, standards, browsers
+hackerNewsUrl: https://news.ycombinator.com/item?id=43344890
+redditUrl: https://www.reddit.com/r/programming/comments/1j9o1tx/http3_is_everywhere_but_nowhere/
+blueskyUrl: https://bsky.app/profile/httptoolkit.com/post/3lk6zcxyen52u
+twitterUrl: https://x.com/HttpToolkit/status/1899862285453041792
 ---
 
 HTTP/3 has been in development since at least 2016, while QUIC (the protocol beneath it) was first introduced by Google way back in 2013. Both are now standardized, [**supported in 95% of users' browsers**](https://caniuse.com/http3), already **used in [32% of HTTP requests to Cloudflare](https://radar.cloudflare.com/adoption-and-usage)**, and **support is advertised by [35% of websites](https://almanac.httparchive.org/en/2024/http#discovering-http3-support)** (through alt-svc or DNS) in the HTTP Archive dataset.