When I try to run this example at http://golang.org/pkg/net/http/#example_Get, it returns the following error
2009/11/10 23:00:00 Get http://www.google.com/robots.txt: dial tcp: Protocol not available
Any idea why?
The Go Playground does not allow HTTP requests. This has nothing to do with code. It is a security precaution enforced by the playground.