udpio.d
tuexen (Michael Tuexen)
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	tuexen
	Jun 28 2018, 2:27 PM

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822 B

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udpio.d
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	#!/usr/sbin/dtrace -s

	#pragma D option quiet
	#pragma D option switchrate=10Hz

	dtrace:::BEGIN
	{
	printf(" %10s %36s %-36s %6s\n", "DELTA(us)", "SOURCE",
	"DEST", "BYTES");
	last = timestamp;
	}

	udp:::send
	{
	this->elapsed = (timestamp - last) / 1000;
	self->dest = strjoin(strjoin(args[2]->ip_daddr, ":"),
	lltostr(args[4]->udp_dport));
	printf(" %10d %30s:%-5d -> %-36s %6d\n", this->elapsed,
	args[2]->ip_saddr, args[4]->udp_sport,
	self->dest, args[4]->udp_length);
	last = timestamp;
	}

	udp:::receive
	{
	this->elapsed = (timestamp - last) / 1000;
	self->dest = strjoin(strjoin(args[2]->ip_saddr, ":"),
	lltostr(args[4]->udp_sport));
	printf(" %10d %30s:%-5d <- %-36s %6d\n", this->elapsed,
	args[2]->ip_daddr, args[4]->udp_dport,
	self->dest, args[4]->udp_length);
	last = timestamp;
	}