UDP Dumper
UDPDumper records UDP packets. It can be used to verify network settings provided by a broker or exchange and to collect data for later testing of UDP-based connectors such as FAST or SBE.
Install UDPDumper through Installer.
Setup and run
On first launch, the app shows the following:

To add network feeds, either add them manually or load all feeds from exchange configuration files. To do this, click the button:

In the window that appears, you need to find the desired config file from the exchange and open it:

All feeds with IP addresses and ports settings will be loaded from a file:

Select the required feeds and click the start download button:

If the settings are correct, the program will start receiving UDP datagrams and writing them to disk. The app will show the number of bytes received for each feed:

UDPDumper has a graphical interface. If you need to run it without a graphical interface, for example on Linux, use UDPDumper.Console, the cross-platform console version.
The app UDPDumper.Console takes as a parameter the path to the file created by the UI version (exactly the UI version, and not an exchange config):
StockSharp.UdpDumper.Console.exe settings.jsonTo test a connector on the collected data, use dump mode. For details, see Dump mode.