[wp-meta] [Making WordPress.org] #8201: api.wordpress.org fails intermittently with HTTP3/quic

[Making WordPress.org]

#8201: api.wordpress.org fails intermittently with HTTP3/quic
--------------------------+--------------------
 Reporter:  samedwards    |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:
Component:  API           |   Keywords:
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 Similar to #7965 (ticket), I'm experiencing intermittent connection errors
 when connecting to api.wordpress.org. This is mostly from a Composer
 plugin that's using the Plugin endpoints to check versions. This is using
 the curl library under the hood

 Other users are experiencing the same issue:
 * https://github.com/inpsyde/wp-translation-downloader/issues/43
 * https://github.com/typisttech/wp-org-closed-plugin/pull/22

 It's also reproducible from the command line:
 {{{
 $ curl -v --http3
 https://api.wordpress.org/plugins/info/1.0/redirection.json
 * Host api.wordpress.org:443 was resolved.
 * IPv6: 2607:f978:5:8002::c68f:a4fb
 * IPv4: 198.143.164.251
 *   Trying [2607:f978:5:8002::c68f:a4fb]:443...
 * SSL Trust Anchors:
 *   Native: Apple SecTrust
 *   OpenSSL default paths (fallback)
 * SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384 / X25519MLKEM768 /
 id-ecPublicKey
 * Server certificate:
 *   subject: CN=wordpress.org
 *   start date: Jan 26 19:43:57 2026 GMT
 *   expire date: Apr 26 19:43:56 2026 GMT
 *   issuer: C=US; O=Let's Encrypt; CN=E8
 *   Certificate level 0: Public key type EC/prime256v1 (256/128
 Bits/secBits), signed using ecdsa-with-SHA384
 *   Certificate level 1: Public key type EC/secp384r1 (384/192
 Bits/secBits), signed using sha256WithRSAEncryption
 *   Certificate level 2: Public key type RSA (4096/152 Bits/secBits),
 signed using sha256WithRSAEncryption
 *   subjectAltName: "api.wordpress.org" matches cert's "*.wordpress.org"
 * OpenSSL verify result: 0
 * SSL certificate verified via OpenSSL.
 * Established connection to api.wordpress.org (2607:f978:5:8002::c68f:a4fb
 port 443) from 2604:3d08:117d:4c05:45c0:86f4:67ba:72c3 port 58821
 * using HTTP/3
 * [HTTP/3] [0] OPENED stream for
 https://api.wordpress.org/plugins/info/1.0/redirection.json
 * [HTTP/3] [0] [:method: GET]
 * [HTTP/3] [0] [:scheme: https]
 * [HTTP/3] [0] [:authority: api.wordpress.org]
 * [HTTP/3] [0] [:path: /plugins/info/1.0/redirection.json]
 * [HTTP/3] [0] [user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64;
 rv:134.0) Gecko/20100101 Firefox/134]
 * [HTTP/3] [0] [accept: */*]
 > GET /plugins/info/1.0/redirection.json HTTP/3
 > Host: api.wordpress.org
 > User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:134.0)
 Gecko/20100101 Firefox/134
 > Accept: */*
 >
 * Request completely sent off
 * ngtcp2_conn_writev_stream returned error: ERR_DRAINING
 * ngtcp2_conn_writev_stream returned error: ERR_DRAINING
 * Connection #0 to host api.wordpress.org:443 left intact
 curl: (56) ngtcp2_conn_writev_stream returned error: ERR_DRAINING
 }}}

-- 
Ticket URL: <https://meta.trac.wordpress.org/ticket/8201>
Making WordPress.org <https://meta.trac.wordpress.org/>
Making WordPress.org