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package netutil
import (
"net/url"
"strings"
)
// FROM: http://golang.org/src/net/http/client.go
// Given a string of the form "host", "host:port", or "[ipv6::address]:port",
// return true if the string includes a port.
func hasPort(s string) bool { return strings.LastIndex(s, ":") > strings.LastIndex(s, "]") }
// FROM: http://golang.org/src/net/http/transport.go
var portMap = map[string]string{
"http": "80",
"https": "443",
}
// FROM: http://golang.org/src/net/http/transport.go
// canonicalAddr returns url.Host but always with a ":port" suffix
func CanonicalAddr(url *url.URL) string {
addr := url.Host
if !hasPort(addr) {
return addr + ":" + portMap[url.Scheme]
}
return addr
}
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