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LWP::DebugFile(3)                    User Contributed Perl Documentation                   LWP::DebugFile(3)



NAME
       LWP::DebugFile - routines for tracing/debugging LWP

SYNOPSIS
       If you want to see just what LWP is doing when your program calls it, add this to the beginning of
       your program's source:

         use LWP::DebugFile;

       For even more verbose debug output, do this instead:

         use LWP::DebugFile ('+');

DESCRIPTION
       This module is like LWP::Debug in that it allows you to see what your calls to LWP are doing behind
       the scenes.  But it is unlike LWP::Debug in that it sends the output to a file, instead of to STDERR
       (as LWP::Debug does).

OPTIONS
       The options you can use in "use LWP::DebugFile (options)" are the same as the non-exporting options
       available from "use LWP::Debug (options)".  That is, you can do things like this:

         use LWP::DebugFile qw(+);
         use LWP::Debug qw(+ -conns);
         use LWP::Debug qw(trace);

       The meanings of these are explained in the documentation for LWP::Debug.  The only differences are
       that by default, LWP::DebugFile has "cons" debugging on, ad that (as mentioned earlier), only
       "non-exporting" options are available.  That is, you can't do this:

         use LWP::DebugFile qw(trace); # wrong

       You might expect that to export LWP::Debug's "trace()" function, but it doesn't work -- it's a
       compile-time error.

OUTPUT FILE NAMING
       If you don't do anything, the output file (where all the LWP debug/trace output goes) will be in the
       current directory, and will be named like lwp_3db7aede_b93.log, where 3db7aede is $^T expressed in
       hex, and "b93" is $$ expressed in hex.  Presumably this is a unique-for-all-time filename!

       If you don't want the files to go in the current directory, you can set $LWP::DebugFile::outpath
       before you load the LWP::DebugFile module:

         BEGIN { $LWP::DebugFile::outpath = '/tmp/crunk/' }
         use LWP::DebugFile;

       Note that you must end the value with a path separator ("/" in this case -- under MacPerl it would be
       ":").  With that set, you will have output files named like /tmp/crunk/lwp_3db7aede_b93.log.

       If you want the LWP::DebugFile output to go a specific filespec (instead of just a uniquely named
       file, in whatever directory), instead set the variable $LWP::DebugFile::outname, like so:

         BEGIN { $LWP::DebugFile::outname = '/home/mojojojo/lwp.log' }
         use LWP::DebugFile;

       In that case, $LWP::DebugFile::outpath isn't consulted at all, and output is always written to the
       file /home/mojojojo/lwp.log.

       Note that the value of $LWP::DebugFile::outname doesn't need to be an absolute filespec.  You can do
       this:

         BEGIN { $LWP::DebugFile::outname = 'lwp.log' }
         use LWP::DebugFile;

       In that case, output goes to a file named lwp.log in the current directory -- specifically, whatever
       directory is current when LWP::DebugFile is first loaded. $LWP::DebugFile::outpath is still not
       consulted -- its value is used only if $LWP::DebugFile::outname isn't set.

ENVIRONMENT
       If you set the environment variables "LWPDEBUGPATH" or "LWPDEBUGFILE", their values will be used in
       initializing the values of $LWP::DebugFile::outpath and $LWP::DebugFile::outname.

       That is, if you have "LWPDEBUGFILE" set to /home/mojojojo/lwp.log, then you can just start out your
       program with:

         use LWP::DebugFile;

       and it will act as if you had started it like this:

         BEGIN { $LWP::DebugFile::outname = '/home/mojojojo/lwp.log' }
         use LWP::DebugFile;

IMPLEMENTATION NOTES
       This module works by subclassing "LWP::Debug", (notably inheriting its "import"). It also redefines
       &LWP::Debug::conns and &LWP::Debug::_log to make for output that is a little more verbose, and
       friendlier for when you're looking at it later in a log file.

SEE ALSO
       LWP::Debug

COPYRIGHT AND DISCLAIMERS
       Copyright (c) 2002 Sean M. Burke.

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself.

       This program is distributed in the hope that it will be useful, but without any warranty; without
       even the implied warranty of merchantability or fitness for a particular purpose.

AUTHOR
       Sean M. Burke "sburke@cpan.org"



perl v5.8.8                                      2003-10-23                                LWP::DebugFile(3)