fix: detect silent SSE connection drops during long tool executions#250
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jasonjaclyn2017 wants to merge 1 commit intoop7418:mainfrom
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fix: detect silent SSE connection drops during long tool executions#250jasonjaclyn2017 wants to merge 1 commit intoop7418:mainfrom
jasonjaclyn2017 wants to merge 1 commit intoop7418:mainfrom
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When Claude runs a long script, the SSE connection can be silently dropped by transport layers (OS TCP stack, Electron internals, HTTP idle timeouts). Previously this caused the stream to appear "completed" with partial content and no error message. Two-part fix: Server-side heartbeat (claude-client.ts): - Send keep_alive SSE events every 30s independently of SDK activity - Prevents intermediate layers from considering the connection idle - Timer properly cleaned up in all exit paths including cancel() Client-side detection (useSSEStream.ts + stream-session-manager.ts): - Track whether the server's 'done' SSE event was received - If reader finishes without 'done', treat as connection drop - Show "Connection lost" error and clear stale SDK session - Flush residual SSE buffer after reader signals done i18n (en.ts + zh.ts): - Add streaming.connectionDrop translation key Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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When Claude runs a long script, the SSE connection can be silently dropped by transport layers (OS TCP stack, Electron internals, HTTP idle timeouts). Previously this caused the stream to appear "completed" with partial content and no error message.
Two-part fix:
Server-side heartbeat (claude-client.ts):
Client-side detection (useSSEStream.ts + stream-session-manager.ts):
i18n (en.ts + zh.ts):