timeout.go

func Download(out chan string, urls... string) {
    for url := range(urls) {
        go func() {
           out <- HttpGet(url)
        }()
    }
}

func Process(in chan string) {
    select {
    case html := <- in:
        // Do something with html
    case <- time.After(10 * time.Second):
        // Timed out!
    }
}

func DoStuff() {
    // Make a channel
    pipe := make(chan string, 10)

    // Kick off goroutines to download the URLs
    Download(pipe, "http://blog.darkhax.com/2011/05/06/simple-ruby-pipes", "http://blog.darkhax.com/2011/03/28/rubber-duck-debugging")

    // Process them, with a timeout
    Process(pipe)
}