capp¶ ↑

home

github.com/drbrain/capp

rdoc

docs.seattlerb.org/capp

bugs

github.com/drbrain/capp/issues

Capp is a packet capture library that wraps libpcap. Capp provides a simple API for capturing packets and automatically unpacks common packets (including Ethernet, IP, TCP, UDP and ICMP). Capp also cooperates with other threads better than other pcap wrapper libraries for ruby.

This product includes software developed by the University of California, Lawrence Berkeley Laboratory and its contributors.

Basic single-thread packet capturing:

require 'capp'

Capp.live.loop do |packet|
  # ...
end

Basic multi-thread packet capturing:

require 'capp'
require 'thread'

q = Queue.new

Thread.new do
  while packet = q.deq do
    # ...
  end
end

capp = Capp.live.loop do |packet|
  q.enq packet
end

• libpcap, tested with 1.1.1 and 1.3.0

sudo gem install capp

After checking out the source, run:

$ rake newb
$ rake newb

This task will install any missing dependencies, run the tests/specs, and generate the RDoc. You need to run it twice as the first run installs the dependencies needed to compile the C extension.

Portions copyright The Regents of the University of California. See individual files for details.

(The MIT License)

Copyright © Eric Hodel

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ‘Software’), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED ‘AS IS’, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.