best way to get all possible ips from network writing in cidr

[Vasiliy Tolstov]

Hello. I need to scan some ips that runs my own server and check,
does it responds.
For example i have network 62.76.47.12/16
After net.ParseCIDR i have IPNet that contains ip and mask, what is
the best way to get all ips in that range and iterate over it?

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

[Russ Cox]

http://play.golang.org/p/m8TNTtygK0

[Vasiliy Tolstov]

Wow, very good. Thanks, Russ!
If ipnet.Contains(ip) runs fast? I'm try to do something converting ip
to binary and increment it...

2013/3/15 Russ Cox <r...@golang.org>:
> http://play.golang.org/p/m8TNTtygK0

[Russ Cox]

On Sat, Mar 16, 2013 at 11:27 AM, Vasiliy Tolstov <v.to...@selfip.ru> wrote:

Wow, very good. Thanks, Russ!
If ipnet.Contains(ip) runs fast? I'm try to do something converting ip
to binary and increment it...

It should be fast enough.

You can measure it.

Saving the output will be much more expensive than the calls.

Russ

[Vasiliy Tolstov]

2013/3/18 Russ Cox <r...@golang.org>:

> It should be fast enough.
> You can measure it.
> Saving the output will be much more expensive than the calls.

Thanks. I'm not store ips a pass it via channel to scanner and returns
result via channel back.

[ziutek]

One thing I'm missing in net package is function like:

func (ip IP) Add(offset int) IP

I've written such utility function for my needs, see:
http://godoc.org/github.com/ziutek/utils/netaddr#IPAdd

[Vasiliy Tolstov]

2013/3/20 ziutek <ziu...@lnet.pl>:

Hm, what is about ipv6 and Add function? As i see some functions
expect to see only ipv4

[ziutek]

On 20 Mar, 14:22, Vasiliy Tolstov <v.tols...@selfip.ru> wrote:
> Hm, what is about ipv6 and Add function? As i see some functions
> expect to see only ipv4

One thing that I love about net package is that it treats IPv4 and
IPv6 in unified way. So Add function shouldn't be an exception.
netaddr.IPAdd function works in this way, see tests:

https://github.com/ziutek/utils/blob/master/netaddr/ip_test.go

[Vasiliy Tolstov]

2013/3/20 ziutek <ziu...@lnet.pl>:

> One thing that I love about net package is that it treats IPv4 and
> IPv6 in unified way. So Add function shouldn't be an exception.
> netaddr.IPAdd function works in this way, see tests:
>
> https://github.com/ziutek/utils/blob/master/netaddr/ip_test.go

Ok. Very good =)