Mungo and StMungo: Tools for Typechecking Protocols in Java
Ornela Dardha, Simon J. Gay, Dimitrios Kouzapas, Roly Perera, A. Laura Voinea, Florian Weber · River Publishers eBooks · 2022
We present two tools that support static typechecking of communication protocols in Java. Mungo associates Java classes with typestate specifications, which are state machines defining permitted sequences of method calls. StMungo translates a communication protocol specified in the Scribble protocol description language into a typestate specification for each role in the protocol by following the message sequence. Role implementations can be typechecked by Mungo to ensure that they satisfy their protocols, and then compiled as usual with javac . We demonstrate the Scribble, StMungo and Mungo toolchain via a typechecked POP3 client that can communicate with a real-world POP3 server.