All Invantive products exchanges messages with a central Customer Service node. These messages include: - error messages for analysis, - usage statistics for billing. The following environment variables control Customer Service and are available on all platforms and products: - `INVANTIVE_CS_BASE_URL`: on Invantive-internal development workstations only, a non-standard Invantive Customer Service node can be selected by specifying a deviating URL. - `INVANTIVE_LOG_IO_TO_FILE`: whether to register traffic. Defaults to `false`. - `INVANTIVE_LOG_IO_TO_FILE_NAME_PATH`: file to register traffic in. - `INVANTIVE_LOG_IO_TO_FILE_REALTIME`: whether to register traffic in real-time. Defaults to `false`.