Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 624a3d6250ec7342a98c1c213283d442573ebda1
https://github.com/WebKit/WebKit/commit/624a3d6250ec7342a98c1c213283d442573ebda1
Author: Ben Nham <n...@apple.com>
Date: 2024-01-30 (Tue, 30 Jan 2024)
Changed paths:
M Source/WebKit/UIProcess/mac/LegacySessionStateCoding.cpp
Log Message:
-----------
Limit size of target string in serialized session state
https://bugs.webkit.org/show_bug.cgi?id=268410
rdar://120213426
Reviewed by Brady Eidson.
We've seen some MobileSafari launches that take a long time during session
restoration because the
_WKSessionState object contains a back/forward list item with an absurdly large
target string (like
>500KB in size).
To fix this, we are going to:
- Arbitrarily limit the size of the persisted target string in the session
state to 32KB (or 16K
characters).
- Tweak our session state data limit policy. Previously, if an item caused us
to trip over the data
limit, we would still serialize that potentially huge item but then avoid
serializing any
subsequent item. Now, we also avoid serializing the potentially huge item
that caused us to trip
over the data limit.
- The first item is still exempted from the data limit on the presumption that
we want session
restoration of that item to have the maximum chance of success (e.g. in the
case of a frontmost
jetsam, we want that the first item in the restored tab to come back with as
much state as
possible).
* Source/WebKit/UIProcess/mac/LegacySessionStateCoding.cpp:
(WebKit::encodeFrameStateNode):
(WebKit::encodeSessionHistory):
Canonical link: https://commits.webkit.org/273810@main
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