syncthing/lib/osutil/lan.go

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// Copyright (C) 2015 The Syncthing Authors.
//
2015-03-07 20:36:35 +00:00
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
package osutil
import (
"net"
)
func GetLans() ([]*net.IPNet, error) {
ifs, err := net.Interfaces()
if err != nil {
return nil, err
}
addrs := []net.Addr{}
for _, currentIf := range ifs {
if currentIf.Flags&net.FlagUp != net.FlagUp {
continue
}
currentAddrs, err := currentIf.Addrs()
if err != nil {
return nil, err
}
addrs = append(addrs, currentAddrs...)
}
nets := make([]*net.IPNet, 0, len(addrs))
for _, addr := range addrs {
net, ok := addr.(*net.IPNet)
if ok {
nets = append(nets, net)
}
}
return nets, nil
}