tut-01

tut-01

Interfaces

Some pointers on the usability of interfaces in golang

httpServ.go

• httpServ.go makes use of the interface in order to write the http response from the server to the network socket.

• This is possible because fmt.Fprint allows io.Writer to be an interface instead of a strict method.

• io.Writer has just the Write method as criteria in it to be acceptable for further processing by fmt.Fprintf.

proxyServ.go

• proxyServ.go makes use of the interface in order to pass the rp value to the http.Server struct.

• This is possible because http.Server allows Handler to be a Handler interface.

• Handler interface has just the ServeHTTP method as criteria in it to be acceptable for further processing by http.Server.ListenAndServe.