Golang gob: type not registered for interface:

So I have a type String that is an alias of string defined:

type String string

I then apply the following method to it:

func (s String) String() string {
    str := "'" + s + "'"
    return string(str)
}

I then try to send a struct containing a String over rpc and get the following error:

gob: type not registered for interface: dbUtils.String

I do not define any interfaces with the same name, so why does gob think this is an interface?

I got the same error with a similar type but solved it with gob.Register(otherType{}).
This does not work with String, presumably because string is not an interface. I am somewhat new to go so please explain what is happening.

It should work with String, but make sure you're passing an instance of a String() object, not the identifier String. So use gob.Register(String(""))

I think this may be a solution to what you're trying to accomplish:

http://play.golang.org/p/9OrSKfcCAQ

Note that you have to explicitly declare the variable as a 'String'. If you use the ":=" assignment will assume it is a string and ignore the function.