Net::Analysis::Listener::Example3 - looking at HTTP transactions
package Net::Analysis::Listener::Example3; use strict; use warnings; use base qw(Net::Analysis::Listener::Base); sub http_transaction { my ($self, $args) = @_; my ($req) = $args->{req}; # isa HTTP::Request my ($req_mono) = $args->{req_mono}; # isa Net::Analysis::TCPMonologue my ($resp_mono) = $args->{resp_mono}; # isa Net::Analysis::TCPMonologue # Print out time between sending last part of request, and receiving # first part of response. # (Note; these are Net::Analsysis::Time objects) my ($network_wait_time) = $resp_mono->t_start() - $req_mono->t_end(); printf "%-50.50s: %8.2f\n", $req->uri(), $network_wait_time; } 1;
You can invoke this example on a TCP capture file from the command line, as follows:
$ perl -MNet::Analysis -e main HTTP Example3 t/t1_google.tcp
Note the regex parameter being passed to the Example2 listener.
How to sit on top of Net::Analysis::Listener::HTTP. Note that you need to load the HTTP listener as well as Example3 in the Perl command line ! If you don't do this, then only the TCP listener will be loaded, no http_transaction events will be emitted, and so Example3 will listen in vain.
http_transaction
Other gotcahs; the t_start and t_end methods for TCPMonologue return Net::Analysis::Time objects, which while useful for certain things, might not be what you want. You can turn them into floating point seconds easily enough though.
t_start
t_end
Net::Analysis, Net::Analysis::Time, Net::Analysis::Listener::HTTP.
Adam B. Worrall, <worrall@cpan.org>
Copyright (C) 2004 by Adam B. Worrall
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.5 or, at your option, any later version of Perl 5 you may have available.
To install Net::Analysis, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Net::Analysis
CPAN shell
perl -MCPAN -e shell install Net::Analysis
For more information on module installation, please visit the detailed CPAN module installation guide.