dc_snoop man page on CentOS

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DC_SNOOP(1)			   distcache			   DC_SNOOP(1)

NAME
       dc_snoop - Distributed session cache traffic analysis

SYNOPSIS
       dc_snoop -listen <address> -server <address> [options]

DESCRIPTION
       dc_snoop runs as a transparent proxy supporting the distcache(8) proto‐
       col and (in theory) should work when inserted between any compliant
       tools. Ie. this can be used to monitor cache operation requests and
       responses between applications and dc_client, or between dc_client and
       dc_server.

       This tool is still in early stages of development and is provided very
       much ``as-is''. It is intended to be used by developers with access to
       the source code - for now, most configurable behaviour of dc_snoop is
       set in source code and can not be manipulated on the command-line.

OPTIONS
       -listen address
	   Configures the address on which dc_snoop should listen for incoming
	   connections.	 The syntax is that defined by the libnal API.

       -server address
       -connect address
	   These flags are identical, and specify the address dc_snoop should
	   transparently proxy all incoming connections to. For each connec‐
	   tion accepted by dc_snoop (on the address specified by -listen) a
	   corresponding connection is opened to the address specified by
	   these flags. When either connection is closed, dc_snoop will corre‐
	   spondingly close the other connection.

       -h, -help, -?
	   Any of these flags will cause dc_snoop to display a brief usage
	   summary to the console and exit cleanly. Any other flags are
	   ignored.

EXAMPLES
       This example demonstrates the use of dc_snoop to monitor communications
       between an instance of dc_client and dc_server both running on the same
       machine using only unix domain sockets. Suppose the tools are started
       and tested using the following commands;

	   # Start services
	   dc_server -daemon -listen UNIX:/tmp/cacheserver
	   dc_client -deamon -listen UNIX:/tmp/cacheclient \
		     -server UNIX:/tmp/cacheserver
	   # Run some tests
	   dc_test -connect UNIX:/tmp/cacheclient

       The following modification should be functionally equivalent (ignoring
       the additional latency and overhead of dc_snoop's involvement) and
       should generate a log file of all cache transactions to logfile. Note
       the change to the -server flag in dc_client;

	   # Start services
	   dc_server -daemon -listen UNIX:/tmp/cacheserver
	   dc_client -deamon -listen UNIX:/tmp/cacheclient \
		     -server UNIX:/tmp/cachesnoop
	   # Start dc_snoop logging to logfile in the background
	   dc_snoop -listen UNIX:/tmp/cachesnoop \
		    -server UNIX:/tmp/cacheserver > logfile &
	   # Run some tests
	   dc_test -connect UNIX:/tmp/cacheclient

BUGS
       This program is incomplete and not at all configurable on the com‐
       mand-line.

SEE ALSO
       dc_client(1)
	   Distributed caching client proxy.

       dc_server(1)
	   Distributed cache server.

       distcache(8)
	   Overview of the distcache architecture.

       http://www.distcache.org/
	   Distcache home page.

AUTHOR
       This toolkit was designed and implemented by Geoff Thorpe for Crypto‐
       graphic Appliances Incorporated. Since the project was released into
       open source, it has a home page and a project environment where devel‐
       opment, mailing lists, and releases are organised. For problems with
       the software or this man page please check for new releases at the
       project web-site below, mail the users mailing list described there, or
       contact the author at geoff@geoffthorpe.net.

       Home Page: http://www.distcache.org

1.4.5				  2004.03.23			   DC_SNOOP(1)
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