trpt(8) [netbsd man page]

TRPT(8) 						    BSD System Manager's Manual 						   TRPT(8)

NAME

     trpt -- transliterate protocol trace

SYNOPSIS

     trpt [-a] [-f] [-j] [-p hex-address] [-s] [-t] [-N system] [-M core]

DESCRIPTION

     trpt interrogates the buffer of TCP trace records created when a socket is marked for ``debugging'' (see setsockopt(2)), and prints a read-
     able 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 additional 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.

     -p      Show only trace records associated with the protocol control block at the given address hex-address.

     -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.

     -M core
	     Extract values associated with the name list from core.

     -N system
	     Extract the name list from system.

     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(1).  Then run trpt with the -p option, sup-
     plying 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.

SYSCTLS

     The following sysctls are used by trpt.  The TCP_DEBUG kernel option must be enabled.

     net.inet.tcp.debug     Structure containing TCP sockets information used by trpt.

     net.inet.tcp.debx	    Number of TCP debug messages.

DIAGNOSTICS

     no namelist
	     When the image doesn't contain the proper symbols to find the trace buffer; others which should be self explanatory.

SEE ALSO

     netstat(1), setsockopt(2)

HISTORY

     The trpt command appeared in 4.2BSD.

BUGS

     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.

BSD
								  August 30, 2007							       BSD

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trpt(8) 						      System Manager's Manual							   trpt(8)

NAME

       trpt - Transliterates protocol trace

SYNOPSIS

       trpt [-afjst] [-p address]

FLAGS

       Print  the values of the source and destination addresses for each packet recorded, in addition to the normal output.  Follows the trace as
       it occurs, waiting briefly for additional records each time the end of the log is reached.  Lists the protocol control block addresses  for
       which  trace  records  exist.   Shows only trace records associated with the protocol control block specified in hexadecimal by the address
       variable.

	      You must include a space between the -p flag and the address variable when you specify this flag.  Prints a detailed description	of
	      the  packet-sequencing  information, in addition to the normal output.  Prints the values for all timers at each point in the trace,
	      in addition to the normal output.

DESCRIPTION

       The trpt command, used for debugging sockets, queries the buffer of Transmission Control Protocol  (TCP)  trace	records.   The	TCP  trace
       record  buffer is created when a socket is marked for debugging with the setsockopt(2) subroutine.  The trpt command queries the buffer and
       then prints a description of the trace records.

       When you specify no options, the trpt command prints all the trace records found in the system and groups them according  to  their  TCP/IP
       connection Protocol Control Block (PCB).

       If you are debugging a system file other than the default, the system argument can be used to replace the default.

       Before  you  can use the trpt command, you must do the following: Isolate the problem and mark for debugging the socket or sockets involved
       in the connection.  Find the address of the protocol control blocks associated with these sockets by using the netstat -aA command.   Then,
       you  can  run  the  trpt  command, using the -p flag to supply the associated protocol control block addresses. You can specify multiple -p
       address flags with a single trpt command.

       The -f flag can be used to follow the trace log once it is located.  The -j flag can be used to check for the presence of trace records for
       the socket in question.

       If the system image does not contain the proper symbols to find the trace buffer, the trpt command cannot succeed.

FILES

       Specifies the command path

RELATED INFORMATION

       Commands: netstat(1)

       Functions: setsockopt(2) delim off

																	   trpt(8)

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trpt(8) [netbsd man page]

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