In this post I will try to wrap up my working progress throught GSoC 2020. I've been working since May trying to add new functionalities to the gRPC R package originally implemneted by Neal Fultz in 2017. There were a total of three functionalities to implement, TLS Encryption, Oauth2 Authentication and finally Streaming. It was required to implement these functionalities in the grpc package from both R and the underlying C wrapper code. Here is the link for my forked repository.
Obviously, one of the main challenges that faced me while working n the project was the callback between the R code and the underlying C wrapper code. This required me to go more deep in the callback functions' implementation and returned data types. For the streaming part, this problem consumed a vast amount of time to be solved in a correct way. Additionaly, knowing exactly why each me
