Working on the RecIt VoIP recording application we faced with necessary to reproduce some errors which were happened on user side, and which we couldn't reproduce in our test enviroment. Of course, the best way to understand what is going wrong is to use Wireshark to capture the VoIP traffic and somehow to simulate it on our PC and debug the application using the "live" traffic. The tool for traffic simulation from .pcap files, simple console application, was developed.
To start traffic simulation from a file, you need to launch the application, specify the full path to the file (only .pcap files are allowed), select the network interface on which you want to receive traffic and launch it. After the end of the process, you can repeat the sending of packets or exit the application.