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better detect IP address

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following advice from https://github.com/chrislusf/seaweedfs/issues/1671
This commit is contained in:
Chris Lu 2020-12-14 00:30:20 -08:00
parent 38fc89d041
commit 021358749b
1 changed files with 16 additions and 6 deletions
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20
weed/util/network.go
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@ -7,16 +7,26 @@ import (
) )
func DetectedHostAddress() string { func DetectedHostAddress() string {
addrs, err := net.InterfaceAddrs() netInterfaces, err := net.Interfaces()
if err != nil { if err != nil {
glog.V(0).Infof("failed to detect ip address: %v", err) glog.V(0).Infof("failed to detect net interfaces: %v", err)
return "" return ""
} }
for _, netInterface := range netInterfaces {
if (netInterface.Flags & net.FlagUp) == 0 {
continue
}
addrs, err := netInterface.Addrs()
if err != nil {
glog.V(0).Infof("get interface addresses: %v", err)
}
for _, a := range addrs { for _, a := range addrs {
if ipnet, ok := a.(*net.IPNet); ok && !ipnet.IP.IsLoopback() { if ipNet, ok := a.(*net.IPNet); ok && !ipNet.IP.IsLoopback() {
if ipnet.IP.To4() != nil { if ipNet.IP.To4() != nil {
return ipnet.IP.String() return ipNet.IP.String()
}
} }
} }
} }