Update the example hello

[liufuyang]

Something like this?

There is a call on make_service_fn and service_fn. Is it possible to make it even simpler?

[seanmonstar]

Yep, like this! We can also git rid of the error handling and just return Result<(), Box<dyn std::error::Error>> from main, since that will do the same thing automatically.

[seanmonstar]

Thank you!

[liufuyang]

@seanmonstar Thank you. BTW, there is no way to remove those make_service_fn and service_fn?
I am no expert but it feels they seem like some boilerplates can be removed somehow? 🤔

[seanmonstar]

Maybe eventually! It's that the server needs some MakeService type that will create a Service for each connection. It looks like boilerplate in such a tiny example, but so far in my experience, an application puts a lot more functionality into both pieces.