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doc: clarify socket.setKeepAlive initialDelay arg #62171

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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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doc: better examples
efekrskl Mar 29, 2026
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3 changes: 3 additions & 0 deletions doc/api/net.md
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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`.

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

* `SO_KEEPALIVE=1`
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