annotate mupdf-source/thirdparty/curl/docs/ALTSVC.md @ 45:b74429b0f5c4 v1.26.5+1

+++++ v1.26.5+1
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:13 +0200
parents b50eed0cc0ef
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1 # Alt-Svc
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3 curl features **EXPERIMENTAL** support for the Alt-Svc: HTTP header.
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5 ## Enable Alt-Svc in build
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7 `./configure --enable-alt-svc`
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9 ## Standard
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11 [RFC 7838](https://tools.ietf.org/html/rfc7838)
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13 # Alt-Svc cache file format
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15 This a text based file with one line per entry and each line consists of nine
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16 space separated fields.
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18 ## Example
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20 h2 quic.tech 8443 h3-22 quic.tech 8443 "20190808 06:18:37" 0 0
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22 ## Fields
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24 1. The ALPN id for the source origin
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25 2. The host name for the source origin
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26 3. The port number for the source origin
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27 4. The ALPN id for the destination host
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28 5. The host name for the destination host
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29 6. The host number for the destination host
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30 7. The expiration date and time of this entry withing double quotes. The date format is "YYYYMMDD HH:MM:SS" and the time zone is GMT.
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31 8. Boolean (1 or 0) if "persist" was set for this entry
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32 9. Integer priority value (not currently used)
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34 # TODO
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36 - handle multiple response headers, when one of them says `clear` (should
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37 override them all)
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38 - using `Age:` value for caching age as per spec
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39 - `CURLALTSVC_IMMEDIATELY` support