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fix(client): network drops reconnecting behaviour #3775

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Merged
icecrasher321 merged 8 commits into from
Mar 26, 2026
Merged

fix(client): network drops reconnecting behaviour #3775

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fbf0724
fix(client): network drops reconnecting behaviour
icecrasher321 Mar 25, 2026
bd3f7ab
address bugbot comments
icecrasher321 Mar 25, 2026
635bd1a
address comments
icecrasher321 Mar 25, 2026
a3c9d3b
address queued message conflicts during retries
icecrasher321 Mar 25, 2026
8182d84
fix more review comments
icecrasher321 Mar 25, 2026
99e642e
fix branch
icecrasher321 Mar 26, 2026
a829ffc
fix non-clear bug
icecrasher321 Mar 26, 2026
03d6cab
fix
icecrasher321 Mar 26, 2026
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fix more review comments
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@icecrasher321
icecrasher321 committed Mar 25, 2026
commit 8182d8419d9b6fae02f96a69ac832ee5929968d3
18 changes: 16 additions & 2 deletions apps/sim/app/workspace/[workspaceId]/home/hooks/use-chat.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -507,6 +507,8 @@ export function useChat(
setIsSending(false)
setIsReconnecting(false)
lastEventIdRef.current = 0
pendingRecoveryMessageRef.current = null
setPendingRecoveryMessage(null)
if (abandonedChatId) {
queryClient.invalidateQueries({ queryKey: taskKeys.detail(abandonedChatId) })
}
Expand All @@ -530,6 +532,8 @@ export function useChat(
setMessageQueue([])
lastEventIdRef.current = 0
clientExecutionStartedRef.current.clear()
pendingRecoveryMessageRef.current = null
setPendingRecoveryMessage(null)
}, [initialChatId, queryClient])

useEffect(() => {
Expand All @@ -552,6 +556,8 @@ export function useChat(
setMessageQueue([])
lastEventIdRef.current = 0
clientExecutionStartedRef.current.clear()
pendingRecoveryMessageRef.current = null
setPendingRecoveryMessage(null)
}, [isHomePage])

const fetchStreamBatch = useCallback(
Expand Down Expand Up @@ -704,7 +710,7 @@ export function useChat(
attempt: attachAttempt,
})

if (batch.events.length === 0 && batch.status === 'unknown') {
if (batch.events.length === 0 && !isTerminalStreamStatus(batch.status)) {
throw new Error(RECONNECT_TAIL_ERROR)
}
}
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icecrasher321 marked this conversation as resolved.
Expand Down Expand Up @@ -1803,9 +1809,15 @@ export function useChat(
pendingRecovery.snapshot?.events?.[pendingRecovery.snapshot.events.length - 1]
?.eventId ?? 0

const rehydratedMessages = messagesRef.current
const lastAssistantMsg = [...rehydratedMessages]
.reverse()
.find((m) => m.role === 'assistant')
const recoveryAssistantId = lastAssistantMsg?.id ?? assistantId

const reconnectResult = await attachToExistingStream({
streamId: pendingRecovery.streamId,
assistantId,
assistantId: recoveryAssistantId,
expectedGen: gen,
snapshot: pendingRecovery.snapshot,
initialLastEventId: lastEventIdRef.current,
Expand Down Expand Up @@ -1858,6 +1870,8 @@ export function useChat(
setIsSending(false)
setIsReconnecting(false)
lastEventIdRef.current = 0
pendingRecoveryMessageRef.current = null
setPendingRecoveryMessage(null)

setMessages((prev) =>
prev.map((msg) => {
Expand Down
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