Digit-1.1 has been released (available at https://ant.isi.edu/software/tdns/index.html
). Digit is a DNS client side tool that can perform DNS queries via different protocols such as UDP, TCP, TLS. This tool is primarily designed to evaluate the client side latency of using DNS over TCP/TLS, as described in the technical report “T-DNS: Connection-Oriented DNS to Improve Privacy and Security” (http://www.isi.edu/~johnh/PAPERS/Zhu14b/index.html).
A README in the package has detailed instructions about how to use this software.