62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
package statute
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import (
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"fmt"
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"net"
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"strconv"
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)
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// AddrSpec is used to return the target AddrSpec
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// which may be specified as IPv4, IPv6, or a FQDN
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type AddrSpec struct {
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FQDN string
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IP net.IP
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Port int
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// private stuff set when Request parsed
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AddrType byte
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}
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// String returns a string suitable to dial; prefer returning IP-based
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// address, fallback to FQDN
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func (sf *AddrSpec) String() string {
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if len(sf.IP) != 0 {
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return net.JoinHostPort(sf.IP.String(), strconv.Itoa(sf.Port))
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}
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return net.JoinHostPort(sf.FQDN, strconv.Itoa(sf.Port))
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}
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// Address returns a string which may be specified
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// if IPv4/IPv6 will return < ip:port >
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// if FQDN will return < domain ip:port >
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// Note: do not used to dial, Please use String
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func (sf AddrSpec) Address() string {
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if sf.FQDN != "" {
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return fmt.Sprintf("%s (%s):%d", sf.FQDN, sf.IP, sf.Port)
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}
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return fmt.Sprintf("%s:%d", sf.IP, sf.Port)
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}
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// ParseAddrSpec parse addr(host:port) to the AddrSpec address
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func ParseAddrSpec(addr string) (as AddrSpec, err error) {
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var host, port string
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host, port, err = net.SplitHostPort(addr)
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if err != nil {
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return
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}
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as.Port, err = strconv.Atoi(port)
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if err != nil {
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return
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}
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ip := net.ParseIP(host)
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if ip4 := ip.To4(); ip4 != nil {
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as.AddrType, as.IP = ATYPIPv4, ip
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} else if ip6 := ip.To16(); ip6 != nil {
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as.AddrType, as.IP = ATYPIPv6, ip
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} else {
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as.AddrType, as.FQDN = ATYPDomain, host
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}
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return
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}
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