net/http doesn't work in the Go Playground

Question

Can someone please explain what am I doing wrong. So basically I'am trying to make a simple HTTP GET request. I copied code from https://gobyexample.com/http-clients. When I'm running it locally everything works fine, but in go playground https://play.golang.org/p/-28ykONUD98 it gives:

panic: Get "http://gobyexample.com": dial tcp: lookup gobyexample.com on 169.254.169.254:53: dial udp 169.254.169.254:53: connect: no route to host

goroutine 1 [running]: main.main() /tmp/sandbox181131075/prog.go:13 +0x345

Program exited: status 2.

Answer 1

From https://blog.golang.org/playground

Like the file system, the playground's network stack is an in-process fake implemented by the syscall package. It permits playground projects to use the loopback interface (127.0.0.1). Requests to other hosts will fail.

So it's normal, your code is good but go playground can only connect to 127.0.0.1