Re: [NSHost currentHost] halts app for 2s on Leopard

FROM : John Stiles
DATE : Sat Nov 17 22:30:25 2007

I'd note that +NSString stringWithUTF8String: will do the same thing 
as your +NSString stringWithCString:encoding:, and goes back a lot 
further, old-OS-compatibility-wise.

On Nov 17, 2007, at 10:02 AM, Gerd Knops wrote:

>
> On Nov 8, 2007, at 8:19 AM, Mark wrote:
>

>> Hi list,
>> I've tracked why my app seems to halt for about 2s.
>>
>> Culprit is [NSHost currentHost] on Leopard (on Tiger that was fast).
>>
>> Does anybody know another way of getting the current host ip and 
>> name?

>
> Confirmed here for 10.5.0 and 10.5.1. It also seems to involve a 
> DNS lookup, and if there is a DNS problem, the delay will be a lot 
> longer.
>
> In my code I replaced it with the code below. Note that it is not 
> equivalent (read the applicable manual pages), but for many 
> situations sufficient, and always fast.
>
> Gerd
>
>
> - (NSString *)currentHost {
>     
>     char        s[_POSIX_HOST_NAME_MAX+1];
>     
>     gethostname(s,_POSIX_HOST_NAME_MAX);
>     
>     return [NSString stringWithCString:s encoding:NSUTF8StringEncoding];
> }
>
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