Method cancelTask

src/core/webview/ClineProvider.ts:3124–3263

()

	}

	public async cancelTask(): Promise<void> {
		const task = this.getCurrentTask()

		if (!task) {
			return
		}

		console.log(`[cancelTask] cancelling task ${task.taskId}.${task.instanceId}`)

		let historyItem: HistoryItem | undefined
		try {
			const history = await this.getTaskWithId(task.taskId)
			historyItem = history.historyItem
		} catch (error) {
			// During task startup there is a short window where currentTask exists
			// but task history has not been persisted yet. Cancelling should still
			// abort safely; we just skip post-cancel rehydration in that case.
			if (error instanceof Error && error.message === "Task not found") {
				this.log(`[cancelTask] task history missing for ${task.taskId}; skipping rehydrate`)
			} else {
				throw error
			}
		}

		// Preserve parent and root task information for history item.
		let rootTask = task.rootTask
		let parentTask = task.parentTask

		// Mark this as a user-initiated cancellation so provider-only rehydration can occur
		task.abortReason = "user_cancelled"

		// Capture the current instance to detect if rehydrate already occurred elsewhere
		const originalInstanceId = task.instanceId

		// Immediately cancel the underlying HTTP request if one is in progress
		// This ensures the stream fails quickly rather than waiting for network timeout
		task.cancelCurrentRequest()

		// Begin abort (non-blocking)
		task.abortTask()

		// Immediately mark the original instance as abandoned to prevent any residual activity
		task.abandoned = true

		await pWaitFor(
			() =>
				this.getCurrentTask()! === undefined ||
				this.getCurrentTask()!.isStreaming === false ||
				this.getCurrentTask()!.didFinishAbortingStream ||
				// If only the first chunk is processed, then there's no
				// need to wait for graceful abort (closes edits, browser,
				// etc).
				this.getCurrentTask()!.isWaitingForFirstChunk,
			{
				timeout: 3_000,
			},
		).catch(() => {
			console.error("Failed to abort task")