How to catch network errors in Golang?

Question

go

How to catch an error in Go

connect: connection refused

I hope there are more human ways than through

strings.Contains(err.Error(), "connection refused")

https://play.golang.org/p/zgVJM9-Tjpe

Answer 1

full expansion of the error:
https://play.golang.org/p/FXoa3wdGj8S
or simpler, just comparison with the error:
https://play.golang.org/p/KeTl1QAJBMs
you can find out what kind of structure is in the error using the debugger: