trpt - transliterate protocol trace
/usr/etc/trpt [ -afjst ] [ -phex-address] [ system [ core ] ]
trpt interrogates the buffer of TCP trace records created when a socket
is marked for "debugging" (see getsockopt(2)), and prints a readable
description of these records. When no options are supplied, trpt
prints all the trace records found in the system grouped according to
TCP connection protocol control block (PCB). The following options may
be used to alter this behavior.
-a In addition to the normal output, print the values of the source
and destination addresses for each packet recorded.
-f Follow the trace as it occurs, waiting a short time for addi-
tional records each time the end of the log is reached.
-j Just give a list of the protocol control block addresses for
which there are trace records.
-s In addition to the normal output, print a detailed description
of the packet sequencing information.
-t In addition to the normal output, print the values for all
timers at each point in the trace.
Show only trace records associated with the protocol control
block, the address of which follows.
The recommended use of trpt is as follows. Isolate the problem and
enable debugging on the socket(s) involved in the connection. Find the
address of the protocol control blocks associated with the sockets
using the -A option to netstat(8C). Then run trpt with the -p option,
supplying the associated protocol control block addresses. The -f
option can be used to follow the trace log once the trace is located.
If there are many sockets using the debugging option, the -j option may
be useful in checking to see if any trace records are present for the
socket in question.
If debugging is being performed on a system or core file other than the
default, the last two arguments may be used to supplant the defaults.
no namelist When the system image does not contain the proper sym-
bols to find the trace buffer; others which should be
Should also print the data for each input or output, but this is not
saved in the trace record.
The output format is inscrutable and should be described here.
4.2 Berkeley Distribution 9 September 1987 TRPT(8C)