Databases
StackOverflow2013
Postsdbo
POCan I disable DNS lookup in PHP? I have the IP address and host name
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POCan I disable DNS lookup in PHP? I have the IP address and host name
    primarykey
    data
    text
    <p>We have mirrors of a website using the same domain name but different IP addresses - it's used for caching worldwide.</p> <p>To check the mirror is working, in theory we can use:</p> <pre><code>$request = new HttpRequest(); ... // IP address of mirror $request-&gt;setUrl('http://xxx.xxx.xxx.xxx'); $request-&gt;setHeaders(array('host' =&gt; 'domainname.com')); ... $request-&gt;send(); </code></pre> <p>But this gives an error saying "'HttpRequestException' with message 'Couldn't resolve host name; ..."</p> <p>We already know the IP address and host name, so is there a way to disable the DNS lookup in PHP? Or in the http request headers?</p> <p>Note:</p> <p>I need to login and have cookies, so I can't use ping. Also the website needs to think its the correct domain, which is why I'm using 'Host' in the header.</p> <p>UPDATE 1:</p> <p>Tried replacing HttpRequest with curl but this gives the same error message:</p> <pre><code>$curl = curl_init() ... curl_setopt($curl, CURLOPT_URL, 'http://xxx.xxx.xxx.xxx'); curl_setopt($curl, CURLOPT_HTTPHEADER, array('Host: domainname.com')); ... if (!curl_exec($curl)) { echo curl_error($curl); // Output is 'Couldn't resolve host 'domainname.com' } </code></pre> <p>UPDATE 2:</p> <p>Ah... It looks like its because of a redirect. I also have the following settings</p> <pre><code>curl_setopt($curl, CURLOPT_MAXREDIRS, 10); curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); </code></pre> <p>From the command line, this works</p> <pre><code>curl --header "Host: domainname.com" http://xxx.xxx.xxx.xxx </code></pre> <p>But it doesn't when I try to log in</p> <pre><code>curl --header "Host: domainname.com" --location --data "username=username&amp;password=password" http://xxx.xxx.xxx.xxx/login.php </code></pre> <p>I get</p> <pre><code>curl: (6) Couldn't resolve host 'domainname.com' </code></pre> <p>Can I keep the ipaddress + host combination? Or maybe I have to loop through the redirects?</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USRussell England
    1. USRussell England
    plurals
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POCan I disable DNS lookup in PHP? I have the IP address and host name
      1. This table or related slice is empty.
      1. VTUpMod
    1. COWhy u use host header? Wouldn't be ping enough? In worst case make TCP-IP request on port 80.
      singulars
      1. POCan I disable DNS lookup in PHP? I have the IP address and host name
      1. USBoris Ivanov
    2. COThanks Boris but I have to login too - I login first then see if the page exists - also the website will only work with the proper domainname rather than the IP address.
      singulars
      1. POCan I disable DNS lookup in PHP? I have the IP address and host name
      1. USRussell England
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload