Default omitemptycauses unintended behavior

[philipithomas]

Unintended behavior:

1. All false booleans are always omitted
2. Enveloping of empty response data causes the envelope to entirely disappear
3. Integer fields of value 0 are omitted (and it's unreasonable to tell api consumers that "if it's gone assume 0 value)

Source: https://github.com/golang/protobuf/blob/master/protoc-gen-go/generator/generator.go#L1788

[philipithomas]

I did more research on this issue, the Proto3 spec, and closed issues. I see now that only jsonpb package is supported, and modifying the EmitDefaults option init shows the defaults.

In addition, for those using the grpc-gateway project, I've opened an issue for tracking of their DefaultEmpty behavior there: grpc-ecosystem/grpc-gateway#233

I'm closing this issue based on my findings.