A few days ago I wrote about using the Postman API to automate functional tests. To send HTTP requests, you use the HTTP API, which is built in Postman. To interact with some API’s, you need to make a call with one of the REST API’s that are built in. There are a few pre-requisites that need to be set up to make use of the HTTP/2 protocol and also ensure your application will be compatible with HTTP/2 in general. At times, especially when working on Android, it can be hard to test and debug a gRPC server. Luckily, gRPC supports a protocol called “stub” that will emulate the behaviour of your service when being tested.