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feat(internal/host): prefer ipv4 than ipv6 (#2342)

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* feat:prefer ipv4 than ipv6

* feat:prefer ipv4 than ipv6

* feat:prefer ipv4 than ipv6

* feat:prefer ipv4 than ipv6
This commit is contained in:
hshe 2022-09-07 11:43:55 +08:00 committed by GitHub
parent 0f0c75e20b
commit e176ddfcdd
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 12 additions and 7 deletions
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17
internal/host/host.go
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@ -51,19 +51,19 @@ func Extract(hostPort string, lis net.Listener) (string, error) {
return "", err return "", err
} }
minIndex := int(^uint(0) >> 1) minIndex := int(^uint(0) >> 1)
var result net.IP ips := make([]net.IP, 0)
for _, iface := range ifaces { for _, iface := range ifaces {
if (iface.Flags & net.FlagUp) == 0 { if (iface.Flags & net.FlagUp) == 0 {
continue continue
} }
if iface.Index >= minIndex && result != nil { if iface.Index >= minIndex && len(ips) != 0 {
continue continue
} }
addrs, err := iface.Addrs() addrs, err := iface.Addrs()
if err != nil { if err != nil {
continue continue
} }
for _, rawAddr := range addrs { for i, rawAddr := range addrs {
var ip net.IP var ip net.IP
switch addr := rawAddr.(type) { switch addr := rawAddr.(type) {
case *net.IPAddr: case *net.IPAddr:
@ -75,13 +75,18 @@ func Extract(hostPort string, lis net.Listener) (string, error) {
} }
if isValidIP(ip.String()) { if isValidIP(ip.String()) {
minIndex = iface.Index minIndex = iface.Index
result = ip if i == 0 {
ips = make([]net.IP, 0, 1)
}
ips = append(ips, ip)
if ip.To4() != nil {
break break
} }
} }
} }
if result != nil { }
return net.JoinHostPort(result.String(), port), nil if len(ips) != 0 {
return net.JoinHostPort(ips[len(ips)-1].String(), port), nil
} }
return "", nil return "", nil
} }