# KeepAlive.Time

Sets idle time before the first keepalive probe is sent.

This parameter applies to imptcp: Plain TCP Syslog.

Name:

  KeepAlive.Time

Scope:

  input

Type:

  integer

Default:

  input=0

Required?:

  no

Introduced:

  at least 5.x, possibly earlier

## Description

The interval between the last data packet sent (simple ACKs are not considered data) and the first keepalive probe; after the connection is marked to need keepalive, this counter is not used any further. The default, 0, means that the operating system defaults are used. This has only effect if keep-alive is enabled. The functionality may not be available on all platforms.

## Input usage

    input(type="imptcp" keepAlive.time="...")

### Legacy names (for reference)

Historic names/directives for compatibility. Do not use in new configs.

- $InputPTCPServerKeepAlive_time — maps to KeepAlive.Time (status: legacy)

## See also

See also imptcp: Plain TCP Syslog.

Support: rsyslog Assistant | GitHub Discussions | GitHub Issues: rsyslog source project

Contributing: Source & docs: rsyslog source project

© 2008–2025 Rainer Gerhards and others. Licensed under the Apache License 2.0.