<s>
Justniffer	B-Protocol
is	O
a	O
TCP	B-Protocol
packet	B-Protocol
sniffer	I-Protocol
.	O
</s>
<s>
An	O
example	O
written	O
in	O
Python	B-Language
(	O
delivered	O
with	O
the	O
official	O
package	O
)	O
stores	O
the	O
transferred	O
contents	O
in	O
an	O
output	O
directory	O
separated	O
by	O
domains	O
.	O
</s>
<s>
justniffer	B-Protocol
was	O
born	O
to	O
help	O
in	O
troubleshooting	O
performance	O
in	O
network	O
TCP-based	O
services	O
:	O
HTTP	B-Protocol
,	O
RTSP	B-Protocol
,	O
SIP	B-Application
,	O
SMTP	B-Protocol
,	O
IMAP	B-Protocol
,	O
POP	B-Protocol
,	O
LDAP	B-Protocol
,	O
Telnet	B-Protocol
etc	O
.	O
</s>
<s>
It	O
can	O
collect	O
low	O
and	O
high	O
level	O
protocol	O
and	O
performance	O
information	O
,	O
reconstructing	O
the	O
TCP	B-Protocol
flow	O
in	O
a	O
reliable	O
way	O
using	O
portions	O
of	O
the	O
Linux	B-Application
kernel	O
code	O
.	O
</s>
<s>
It	O
uses	O
a	O
slightly	O
modified	O
version	O
of	O
the	O
libraries	O
that	O
already	O
include	O
a	O
modified	O
version	O
of	O
Linux	B-Application
kernel	O
code	O
in	O
a	O
more	O
reusable	O
way	O
.	O
</s>
<s>
The	O
man	O
page	O
for	O
justniffer	B-Protocol
explains	O
all	O
the	O
options	O
.	O
</s>
