sample code to check that ip in specific cidr range

[Vasiliy Tolstov]

Hello. Can somebody share code to check that specific ip belongs to
specific cidr block?
I have some nets and want to do some stuff for local clients and
another for non local...

--
Vasiliy Tolstov,
Clodo.ru
e-mail: v.to...@selfip.ru
jabber: va...@selfip.ru

[Dustin]

It looks like the net package does it all for you.

package main

import (

"net"

"testing"

)

type item struct {

addr    string

cidr    string

matches bool

}

var testdata = []item{

item{"192.168.1.67", "192.168.1.0/24", true},

item{"192.168.1.67", "192.168.1.0/28", false},

item{"192.168.1.67", "0.0.0.0/0", true},

}

func TestCIDRMatch(t *testing.T) {

for _, it := range testdata {

_, cidrnet, err := net.ParseCIDR(it.cidr)

if err != nil {

panic(err) // assuming I did it right above

}

myaddr := net.ParseIP(it.addr)

if cidrnet.Contains(myaddr) != it.matches {

t.Fatalf("Wrong on %+v")

}

}

}

[Vasiliy Tolstov]

2012/2/21 Dustin <dsal...@gmail.com>:

> It looks like the net package does it all for you.
>
>
>

Thanks!