Further reading

This being a rather niche subject in a vast framework, there isn't much to recommend in terms of further reading on the specific topic of pluggable protocols themselves. However, if you're curious to learn more about the contexts and architectures that might motivate the need for custom protocol implementation, I would recommend checking out the Serverless Programming Cookbook by Heartin Kanikathottu. Its discussion of various network interactions from cloud platform-hosted source code paints a compelling picture for new, optimized communication paradigms. It can be found from Packt, here: https://www.packtpub.com/application-development/serverless-programming-cookbook.