Update GrandSlam authentication user agent (notarized line) - #51
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Update GrandSlam authentication user agent (notarized line)#51Calvin-Zikakis wants to merge 1 commit into
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The akd/1.0 CFNetwork/978.0.7 Darwin/18.7.0 string dates from macOS 10.14. Apple's GSA edge now allows only two requests per connection with it, and sign in sends three, so the third always fails with an HTML 503 that surfaces as NSCocoaErrorDomain 3840. A current AuthKit string raises that to four. Port of rileytestut#47 by @BreezeDelegate onto the notarized branch, which AltStore's classic branches pin.
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Port of #47 by @BreezeDelegate onto
notarized. The change is theirs, this just applies it to the other branch, and the commit keeps them as author.marketplaceandnotarizedhave diverged and neither contains the other. #47 targetsmarketplace, but AltStore'sclassicandclassic_v2.3b1pinnotarized, so AltServer and non EU AltStore builds do not get it. Without this they stay on the 2018 User-Agent.Why it matters
Apple's GSA edge allows a fixed number of requests per connection before it starts returning 503, and the User-Agent changes that number. Six requests down one reused connection, five trials each, identical every time:
Two requests on the old string, four on the new one.
authenticate()sends three down a single connection, so the third one always fails, which is exactly the reported symptom: init and complete succeed, apptokens returns an HTML 503, and the plist parser reports it asNSCocoaErrorDomain 3840 "Encountered unknown tag html on line 1".Interleaved over 100 requests each, one at a time on fresh connections:
Scope
This is the whole fix for the deterministic part. There is a separate baseline failure of roughly 20 to 25 percent even on a fresh connection's first request, which the User-Agent does not affect (old 15/20, new 16/20). #50 handles that by retrying 5xx on a fresh connection. The two together got a machine that had never completed sign in to 25/25.
Reported in altstoreio/AltStore#1776, #1699, #1747.