36 lines
879 B
Go
36 lines
879 B
Go
package middleware
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import (
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"net"
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"strings"
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"github.com/miekg/dns"
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)
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// Host represents a host from the Corefile, may contain port.
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type (
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Host string
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Addr string
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)
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// Standard will return the host portion of host, stripping
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// of any port. The host will also be fully qualified and lowercased.
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func (h Host) Standard() string {
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// separate host and port
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host, _, err := net.SplitHostPort(string(h))
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if err != nil {
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host, _, _ = net.SplitHostPort(string(h) + ":")
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}
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return strings.ToLower(dns.Fqdn(host))
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}
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// Standard will return a normalized address, if not port is specified
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// port 53 is added, otherwise the port will be left as is.
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func (a Addr) Standard() string {
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// separate host and port
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addr, port, err := net.SplitHostPort(string(a))
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if err != nil {
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addr, port, _ = net.SplitHostPort(string(a) + ":53")
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}
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return net.JoinHostPort(addr, port)
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}
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