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#!/usr/sbin/dtrace -s
/*
* udpsnoop - snoop UDP network packets by process.
* Written using DTrace udp Provider.
*
* This analyses UDP network packets and prints the responsible PID plus
* standard details such as IP address and port. This captures traffic
* from existing and newly created UDP connections. It can help identify
* which processes are causing UDP traffic.
*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*
* Portions Copyright 2010 Brendan Gregg
*/
#pragma D option quiet
#pragma D option switchrate=10hz
dtrace:::BEGIN
{
printf("%6s %6s %15s:%-5s %15s:%-5s %6s\n",
"TIME", "PID", "LADDR", "PORT", "RADDR", "PORT", "BYTES");
}
udp:::send
{
printf("%6d %6d %15s:%-5d -> %15s:%-5d %6d\n",
timestamp/1000, args[1]->cs_pid, args[2]->ip_saddr,
args[4]->udp_sport, args[2]->ip_daddr, args[4]->udp_dport,
args[4]->udp_length);
}
udp:::receive
{
printf("%6d %6d %15s:%-5d <- %15s:%-5d %6d\n",
timestamp/1000, args[1]->cs_pid, args[2]->ip_daddr,
args[4]->udp_dport, args[2]->ip_saddr, args[4]->udp_sport,
args[4]->udp_length);
}
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