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@jniltinho
Created March 26, 2014 16:55
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Get My IP Golang
package main
/*
URL: https://github.com/mccoyst/myip/blob/master/myip.go
URL: http://changsijay.com/2013/07/28/golang-get-ip-address/
*/
import (
"net"
"os"
)
func main() {
addrs, err := net.InterfaceAddrs()
if err != nil {
os.Stderr.WriteString("Oops: " + err.Error() + "\n")
os.Exit(1)
}
for _, a := range addrs {
if ipnet, ok := a.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
if ipnet.IP.To4() != nil {
os.Stdout.WriteString(ipnet.IP.String() + "\n")
}
}
}
}
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ghost commented Nov 29, 2016

Thanks, This helps a lot!

@Konstantin8105
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Thanks

@Demitroi
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Demitroi commented Jul 7, 2017

Thanks, good work

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ghost commented Oct 31, 2017

Might be easier to do something like this:

package main

import "net"

func main() {
    conn, err := net.Dial("udp", "8.8.8.8:80")
    // handle err...

     defer conn.Close()
     localAddr := conn.LocalAddr().(*net.UDPAddr)
}

This will give you the primary IP address used by your system (great for machines that have multiple ips, interfaces etc).

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ghost commented Oct 31, 2017

Also, you can use the netFlags to determine the status and capabilities of that interface which could be very useful.

@edwardstudy
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@rucuriousyet Could I use 1.2.3.4:1 to dial udp.

@pashok2398
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@jniltinho thanks it worked for me :)
@rucuriousyet in my case i have 2 addresses on same interface i think your solution will get only one of them....
Can someone explain line 21, didnt got the a.(*net.IPNet).
Thanks

@g10guang
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g10guang commented Dec 6, 2018

Might be easier to do something like this:

package main

import "net"

func main() {
    conn, err := net.Dial("udp", "8.8.8.8:80")
    // handle err...

     defer conn.Close()
     localAddr := conn.LocalAddr().(*net.UDPAddr)
}

This will give you the primary IP address used by your system (great for machines that have multiple ips, interfaces etc).

China cannot access google dns 8.8.8.8

@shilangyu
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Might be easier to do something like this:

package main

import "net"

func main() {
    conn, err := net.Dial("udp", "8.8.8.8:80")
    // handle err...

     defer conn.Close()
     localAddr := conn.LocalAddr().(*net.UDPAddr)
}

This will give you the primary IP address used by your system (great for machines that have multiple ips, interfaces etc).

China cannot access google dns 8.8.8.8

Does not matter, its a UDP connection therefore there is no handshake, works offline

@west0706
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Thanks! very simple and powerful!

@imbin
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imbin commented May 26, 2021

Thanks! very simple and powerful!

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ghost commented Feb 26, 2022

牛批的很

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