Re: 'Couldn't resolve host' error since relocating server

sounds like it's not curl's fault. if a host name can't be resolved then all
apps will fail to connect.

On 8/18/09 10:39 AM, "Tom Van de Putte" <[email protected]> wrote:

> I found out that when I add the requested domain to my /etc/hosts file (and
> thus bypass any dns requests), curl runs and return just fine. So probably
> the error is somewhere in dns/bind? My /etc/host.conf lookup order is
> 'hosts,bind'.
> 
> So I'm Still needing some help. Or thus this mean this is not an cUrl
> problem anymore?
> 
> Thanks in advance,
> Tom Van de Putte
> 
> 
> On Tue, Aug 18, 2009 at 3:40 PM, Tom Van de Putte
> <[email protected]>wrote:
> 
>> 
>> Hey,
>> 
>> My company moved last friday and thus so did our development server. The
>> problem is that since the relocation my (multi) cUrl script doesn't work
>> anymore.
>> 
>> It hangs on curl_multi_select() because it can't resolve the hostname.
>> 
>> However the CLI of curl works perfectly so I checked the configs (the
>> development server is an plain (arch)linux - apache - php installation) but
>> they seem clean. If I comment out the direction to our own dns server in
>> /etc/resolve.conf the CLI version also stops working so I figure out that
>> libcurl/php uses another way to resolve eg. via glibc?
>> 
>> So I ran the exact same code (simple curl http get action) on another
>> machine (with almost same configurations) and it works perfectly.
>> 
>> Using the options CURLOPT_DNS_USE_GLOBAL_CACHE and
>> CURLOPT_DNS_CACHE_TIMEOUT doe not make any differance.
>> 
>> Is this problem caused by the fact that our fixed external ip adress
>> changed or does this have anything todo with curls internal caching or ... ?
>> 
>> I realy need to solve this so any help is welcome!
>> 
>> 
>> 
>> The test code:
>> 
>> $_h = curl_init();
>> curl_setopt($_h, CURLOPT_HEADER, 1);
>> curl_setopt($_h, CURLOPT_RETURNTRANSFER, 1);
>> curl_setopt($_h, CURLOPT_HTTPGET, 1);
>> curl_setopt($_h, CURLOPT_URL, 'http://www.dns.be/' );
>> curl_setopt($_h, CURLOPT_DNS_USE_GLOBAL_CACHE, false );
>> curl_setopt($_h, CURLOPT_DNS_CACHE_TIMEOUT, 2 );
>> 
>> var_dump(curl_exec($_h));
>> var_dump(curl_getinfo($_h));
>> var_dump(curl_error($_h));
>> 
>> 
>> 
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