309386 2026-03-06 15:00:25 -0800 [IndexedDB] Recover IndexedDB connections after network process crash without page reload 2026-03-30 07:21:48 -0700 1 1 1 Unclassified WebKit WebCore Misc. Safari 26 All All RESOLVED FIXED InRadar P2 Normal --- 1 brandonstewart brandonstewart joshkel lincolnbaxter nisala webkit-bug-importer oldest_to_newest 2187915 0 brandonstewart 2026-03-06 15:00:25 -0800 When the NetworkProcess crashes, IndexedDB becomes permanently broken for the lifetime of the page. Documents and workers cache an IDBConnectionProxy pointing to a dead IDBConnectionToServer (m_serverConnectionIsValid == false), and the DOMWindowIndexedDatabase/WorkerGlobalScopeIndexedDatabase supplements cache an IDBFactory bound to that dead proxy. New indexedDB.open() calls fail with "Connection to Indexed Database server lost" until the page is reloaded. Fix this by clearing the stale proxy caches when the network process connection is lost: - Document::clearIDBConnectionProxy() nulls m_idbConnectionProxy so the next idbConnectionProxy() call lazily fetches a fresh proxy from Page::idbConnection(), and removes the DOMWindowIndexedDatabase supplement so the IDBFactory is recreated. - Page::clearIDBConnectionOnAllDocuments() clears the page-level IDBConnectionToServer and all document proxies. - For workers, Page::refreshIDBConnectionForWorkers() creates a new IDBConnectionToServer and distributes its proxy to all worker threads via WorkerGlobalScope::replaceIDBConnectionProxyOnAllWorkers(), which iterates allWorkerGlobalScopeIdentifiers and posts a task to each worker to replace its cached proxy and remove its WorkerGlobalScopeIndexedDatabase supplement. - NetworkProcessConnection::didClose() calls refreshIDBConnectionForWorkers() after connectionToServerLost() finishes tearing down the old connection, so workers receive the new proxy after all error notifications from the old connection. - Supplementable::removeSupplement() is added to support clearing cached supplements. 2187916 1 webkit-bug-importer 2026-03-06 15:00:32 -0800 <rdar://problem/171932720> 2187920 2 brandonstewart 2026-03-06 15:03:49 -0800 Pull request: https://github.com/WebKit/WebKit/pull/60094 2188987 3 ews-feeder 2026-03-10 21:36:37 -0700 Committed 309032@main (3c147a650200): <https://commits.webkit.org/309032@main> Reviewed commits have been landed. Closing PR #60094 and removing active labels. 2191207 4 ews-feeder 2026-03-17 18:46:11 -0700 Committed 305413.508@safari-7624-branch (cc2e57e63f48): <https://commits.webkit.org/305413.508@safari-7624-branch> Reviewed commits have been landed. Closing PR #4665 and removing active labels. 2194404 5 sihui_liu 2026-03-27 11:31:10 -0700 *** Bug 277615 has been marked as a duplicate of this bug. *** 2195157 6 lincolnbaxter 2026-03-30 07:21:00 -0700 THANK YOU. IT'S BEEN YEARS. Looking forward to the release. Very happy to see regression tests added :) 2195158 7 lincolnbaxter 2026-03-30 07:21:48 -0700 Brandon is a hero.