check if host is reachable

[will]

Hi everyone,

I am a newbie to golang and loving it.

Is there a way to find out if a host is up or down.  In java i would do something like this:

 int timeOut = 3000; 

    boolean status = InetAddress.getByName(host).isReachable(timeOut);

[Matt Silverlock]

http://golang.org/pkg/net/#DialTimeout

[will]

Hi Matt,

THanks for the reply but java is actually using icmp (ping) which i am not getting in go,. I hop[e there is some way of implementing it

On Saturday, 10 August 2013 12:14:53 UTC+2, Matt Silverlock wrote:

http://golang.org/pkg/net/#DialTimeout

[Jan Mercl]

On Sat, Aug 10, 2013 at 6:14 PM, will <wma...@gmail.com> wrote:
> Hi Matt,
>
> THanks for the reply but java is actually using icmp (ping) which i am not
> getting in go,. I hop[e there is some way of implementing it

A server can ignore pings but can still serve some services at
specific ports. For example, _no_ publicly visible machine I'm
responsible for ever reacts to pings.

Just attempting to dial with a timeout is the correct approach. Java is wrong.

-j

[will]

Hi Jan,

I hear you but i am not just looking at servers.  I am also looking at client machines like in a network or network devices that may not be running any services

[Ross Salas]

You might find this interesting:

https://groups.google.com/forum/#!searchin/golang-nuts/ping$20code/golang-nuts/yyXqNGIcMzA/mmZ_vQKun9UJ

I was able to make my own ping function with referenced code.

HTH

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[justi...@gmail.com]

You can always call the OS's ping command from within go.  This isn't too terrible.  You can see a cross-platform example here: https://github.com/jcuga/goping