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From there you need to set an endpoint and request body in JSON format (Insomnia supports both unary and streaming calls) and hit Send. Here I'm using Greeter service from grpc-go repository ⬇️ It appears that gRPC support in Insomnia is indeed very young as there's no support yet for request headers or any response metadata other than status ⬇️ Good news is that Insomnia seems to be moving fast and is open source, so it's only a matter of time until this improvements are made by the core team or contributed from outside.
It doesn't yet support streaming RPCs, which appears to be due to lack of event loops in k6 but is work in progress. Our RPCs are primarily bi-directional streaming however.
Of course Postman isn't the only tool in the space, and one of the wonderful alternatives is Insomnia. While Postman has become somewhat bloated over time, Insomnia pitches, among the other things, simplicity and elegance and in fact delivers on those. I've personally used for quite some time with REST APIs but only recently discovered that they've added gRPC support. Let's explore how it works.
In part 1 we looked at ghz for load testing gRPC services, and now I want to cover k6, which claims to be a modern load testing tool built for developer happiness. After only a brief experience with it I can see why is that and why Grafana moved to acquire k6 earlier this year.