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local_ip.go
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/
local_ip.go
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package localip
import "net"
import "strconv"
func LocalIP() (string, error) {
addr, err := net.ResolveUDPAddr("udp", "1.2.3.4:1")
if err != nil {
return "", err
}
conn, err := net.DialUDP("udp", nil, addr)
if err != nil {
return "", err
}
defer conn.Close()
host, _, err := net.SplitHostPort(conn.LocalAddr().String())
if err != nil {
return "", err
}
return host, nil
}
func LocalPort() (uint32, error) {
l, err := net.Listen("tcp4", "0.0.0.0:0")
if err != nil {
return 0, err
}
defer l.Close()
_, port, err := net.SplitHostPort(l.Addr().String())
if err != nil {
return 0, err
}
portValue, err := strconv.ParseUint(port, 10, 32)
if err != nil {
return 0, err
}
return uint32(portValue), nil
}