Why am I getting a \'Protocol Not Available\' Error When Making an HTTP Request in the Go Playground?

http.Get Error Protocol Not Available

Issue:

When executing the example code from http://golang.org/pkg/net/http/#example_Get in the Go Playground, the following error is encountered:

2009/11/10 23:00:00 Get http://www.google.com/robots.txt: dial tcp: Protocol not available

Reason:

The Go Playground does not allow HTTP requests. This security precaution is implemented to prevent malicious code from being executed on the playground. It is unrelated to the code itself.

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