Just a quick note – if You need to dump all traffic between payment gateway and Your application using ActiveMerchant just add to Your development.rb:
ActiveMerchant::Billing::QuantumGateway.wiredump_device = File.open("/tmp/q.log", "a+") ActiveMerchant::Billing::QuantumGateway.wiredump_device.sync = true
Just remember – it will work ONLY You have one application instance, since it uses simple file handle to write all traffic. And replace QunatumGateway with gateway used by You.
You can also use the following to stream data direct to the console:
ActiveMerchant::Billing::QuantumGateway.wiredump_device = $stdout