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doc: document new TCP_KEEPCNT and TCP_KEEPINTVL socket option defaults #38313

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doc: document new TCP_KEEPCNT and TCP_KEEPINTVL socket option defaults #38313

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doc: document new TCP_KEEPCNT and TCP_KEEPINTVL socket option defaults
ArnoldZokas Apr 20, 2021
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update list of version where the change was introduced
ArnoldZokas Apr 20, 2021
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10 changes: 10 additions & 0 deletions doc/api/net.md
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Expand Up @@ -1006,6 +1006,10 @@ Set the encoding for the socket as a [Readable Stream][]. See
### `socket.setKeepAlive([enable][, initialDelay])`
<!-- YAML
added: v0.1.92
changes:
- version: v12.17.0
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pr-url: https://github.com/nodejs/node/pull/32204
description: New defaults for `TCP_KEEPCNT` and `TCP_KEEPINTVL` socket options were added.
-->

* `enable` {boolean} **Default:** `false`
Expand All @@ -1020,6 +1024,12 @@ data packet received and the first keepalive probe. Setting `0` for
`initialDelay` will leave the value unchanged from the default
(or previous) setting.

Enabling the keep-alive functionality will set the following socket options:
* `SO_KEEPALIVE=1`
* `TCP_KEEPIDLE=initialDelay`
* `TCP_KEEPCNT=10`
* `TCP_KEEPINTVL=1`

### `socket.setNoDelay([noDelay])`
<!-- YAML
added: v0.1.90
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