Remove deprecated logic, modernise project

[marcusirgens]

This issue tracks a more thorough rewrite of this code, which has turned a bit stale. This includes the fixes in #51, which replaces the framing logic with the more idiomatic anypb.Any type, while also removing the deprecated grpc.CustomCodec() calls.

As far as I can tell, this rewrite is 100% backwards compatible, but I'm eager to perform some more tests with some more complex protos.

This PR includes

• Some more tests of the testing server
• A more flexible testing server
• Rewrite to go modules
• Some sugar methods and sane defaults for ease of use (proxy.NewProxy)

I do suggest tagging this as 0.2 if this is merged at some point.

Feedback and contributions are greatly appreciated.

[johanbrandhorst]

LGTM

[DennisMao]

.editconfig can be reomved or igored.

[johanbrandhorst]

(I don't have the permission to merge this).

[tmc]

@mwitkow would you be open to opening up maintainers on this codebase?

[bwplotka]

Thanks @johanbrandhorst and others! Let's get this rolling 💪🏽

@tmc I think we should add more maintainers and I can try to arrange that (I can't add people), if anyone wants to help. Feel free to shoot me a message to bwplotka @ gmail.com

@johanbrandhorst do you have time to help too? 🙈

[bwplotka]

Great work BTW @marcusirgens - this was definitely needed.

[johanbrandhorst]

I would love to help if I can :)

[marcusirgens]

I'm open to contributing to this project. 👍🏻

[fabregas]

@marcusirgens you can't unmarshal any binary protobuf message to anypb.Any. This is wrong assumption.

Any message declaration:

message Any {
string type_url = 1;
bytes value = 2;
}

So in some cases we will receive error "grpc: failed to unmarshal the received message string field contains invalid UTF-8" bcs it can't unmarshal type_url string.