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(httpcontrol 
import "github.com/facebookgo/httpcontrol"
Package httpcontrol allows a HTTP transport supporting connection pooling,
timeouts & retries.
This Transport is built on top of the standard library transport and augments it
with additional features. Using it can be as simple as:
client := &http.Client{
Transport: &httpcontrol.Transport{
RequestTimeout: time.Minute,
MaxTries: 3,
},
}
res, err := client.Get("http://example.com/")
Documentation: http://godoc.org/github.com/facebookgo/httpcontrol