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nodes api: improve local IP detection with outbound dial fallback

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This commit is contained in:
DBT
2026-02-26 03:08:18 +00:00
parent f05759b57e
commit 47507d1145
1 changed files with 31 additions and 22 deletions
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53
pkg/nodes/registry_server.go
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@@ -847,30 +847,39 @@ func detectWebUIVersion(webUIDir string) string {
func detectLocalIP() string { func detectLocalIP() string {
ifaces, err := net.Interfaces() ifaces, err := net.Interfaces()
if err != nil { if err == nil {
return "" for _, iface := range ifaces {
} if iface.Flags&net.FlagUp == 0 || iface.Flags&net.FlagLoopback != 0 {
for _, iface := range ifaces { continue
if iface.Flags&net.FlagUp == 0 || iface.Flags&net.FlagLoopback != 0 { }
continue addrs, _ := iface.Addrs()
for _, a := range addrs {
var ip net.IP
switch v := a.(type) {
case *net.IPNet:
ip = v.IP
case *net.IPAddr:
ip = v.IP
}
if ip == nil || ip.IsLoopback() {
continue
}
ip = ip.To4()
if ip == nil {
continue
}
return ip.String()
}
} }
addrs, _ := iface.Addrs() }
for _, a := range addrs { // Fallback: detect outbound source IP.
var ip net.IP conn, err := net.Dial("udp", "8.8.8.8:80")
switch v := a.(type) { if err == nil {
case *net.IPNet: defer conn.Close()
ip = v.IP if ua, ok := conn.LocalAddr().(*net.UDPAddr); ok && ua.IP != nil {
case *net.IPAddr: if ip := ua.IP.To4(); ip != nil {
ip = v.IP return ip.String()
} }
if ip == nil || ip.IsLoopback() {
continue
}
ip = ip.To4()
if ip == nil {
continue
}
return ip.String()
} }
} }
return "" return ""