curl/docs/cmdline-opts/keepalive-time.d
Daniel Stenberg 2bc1d775f5
copyright: update all copyright lines and remove year ranges
- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- saves us from pointless churn
- git keeps history for us
- the year range is kept in COPYING

checksrc is updated to allow non-year using copyright statements

Closes #10205
2023-01-03 09:19:21 +01:00

22 lines
883 B
D

c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Long: keepalive-time
Arg: <seconds>
Help: Interval time for keepalive probes
Added: 7.18.0
Category: connection
Example: --keepalive-time 20 $URL
See-also: no-keepalive max-time
Multi: single
---
This option sets the time a connection needs to remain idle before sending
keepalive probes and the time between individual keepalive probes. It is
currently effective on operating systems offering the TCP_KEEPIDLE and
TCP_KEEPINTVL socket options (meaning Linux, recent AIX, HP-UX and more).
Keepalives are used by the TCP stack to detect broken networks on idle
connections. The number of missed keepalive probes before declaring the
connection down is OS dependent and is commonly 9 or 10. This option has no
effect if --no-keepalive is used.
If unspecified, the option defaults to 60 seconds.