altsvc: accept ma/persist per alternative entry

[bagder]

The 'ma' and 'persist' keywords should be considered per list entry, not once per header.

Expand test 1654 to verify such headers

Reported-by: Hunt Darlener

[Copilot]

Pull request overview

This PR fixes the Alt-Svc header parsing to correctly handle 'ma' (max-age) and 'persist' parameters on a per-entry basis rather than globally per header. Previously, these parameters would apply to all alternative service entries in a header; now each entry can have its own values.

Key changes:

• Moved maxage and persist variable initialization into the per-entry parsing loop
• Moved the ma/persist parameter parsing from header level to entry level
• Updated test to verify per-entry ma values are correctly applied

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
lib/altsvc.c	Refactored parsing logic to initialize and parse ma/persist parameters per alternative service entry instead of once per header
tests/unit/unit1654.c	Modified existing test case to include per-entry ma values and added new test case to verify different ma values for different entries
tests/data/test1654	Added expected output entries for the new test case with correct expiration times

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[bagder]

augment review

[augmentcode]

🤖 Augment PR Summary

Summary: Adjust Alt-Svc parsing so ma (max-age) and persist are applied per alternative entry, rather than once per header.

Changes:

• Move maxage/persist defaults into the per-entry parse loop in Curl_altsvc_parse()
• Parse optional ma/persist parameters immediately after each entry’s quoted authority
• Expand unit test 1654 (and its expected output) to verify mixed per-entry ma values and unknown parameters

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[augmentcode]

Review completed. 1 suggestions posted.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

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[bagder]

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Review completed. 1 suggestions posted.

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