Provided by: systemtap-doc_3.1-3ubuntu0.1_all 

NAME
probe::udp.sendmsg - Fires whenever a process sends a UDP message
SYNOPSIS
udp.sendmsg
VALUES
size
Number of bytes sent by the process
name
The name of this probe
daddr
A string representing the destination IP address
dport
UDP destination port
family
IP address family
sock
Network socket used by the process
saddr
A string representing the source IP address
sport
UDP source port
CONTEXT
The process which sent a UDP message
SEE ALSO
tapset::udp(3stap)
SystemTap Tapset Reference March 2016 PROBE::UDP.SENDMSG(3stap)