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doc: clarify socket.setKeepAlive initialDelay arg #62171

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doc: clarify socket.setKeepAlive initialDelay arg

efekrskl Mar 9, 2026

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3 changes: 3 additions & 0 deletions doc/api/net.md

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Original file line number	Diff line number	Diff line change
Expand Up		@@ -1402,6 +1402,9 @@ data packet received and the first keepalive probe. Setting `0` for
		`initialDelay` will leave the value unchanged from the default
		(or previous) setting.

		Note: Node.js converts `initialDelay` from milliseconds to seconds and truncates any fractional part.
		For example, `1500` becomes `1`, and values from `1` to `999` become `0`.

		Enabling the keep-alive functionality will set the following socket options:

		* `SO_KEEPALIVE=1`
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