ltm rule command TCP snd cwnd
iRule(1) BIG-IP TMSH Manual iRule(1)
TCP::snd_cwnd
Returns the TCP congestion window (cwnd).
SYNOPSIS
TCP::snd_cwnd
DESCRIPTION
Returns the TCP congestion window (cwnd), the maximum unacknowledged data the connection can send due to the congestion
control algorithm.
The actual amount of outstanding data may be lower, due to lack of application data to send, the remote host's advertised
receive window, or the size of the BIG-IP send buffer.
RETURN VALUE
The cwnd in bytes.
VALID DURING
ANY_EVENT
EXAMPLES
when CLIENT_ACCEPTED {
# Get BIGIP's initial congestion window.
log local0. "BIGIP's cwnd: [TCP::snd_cwnd]"
}
when CLIENT_CLOSED {
# Get BIGIP's last congestion window.
log local0. "BIGIP's cwnd: [TCP::snd_cwnd]"
}
HINTS
SEE ALSO
CHANGE LOG
@BIGIP-12.0.0 --First introduced the command.
BIG-IP 2022-04-12 iRule(1)