CURL and HTTPS, “Cannot resolve host”

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I'm trying to fetch the contents of a page using CURL. The page that is doing the fetching is https and the page it is trying to fetch is also https. I'm getting an error "Couldn't resolve host" with all of the settings I try.

$c=curl_init();
curl_setopt($c, CURLOPT_URL,$url);
//curl_setopt($c, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:x.x.x) Gecko/20041107 Firefox/x.x");
curl_setopt ($c, CURLOPT_RETURNTRANSFER, TRUE);
//curl_setopt($c, CURLOPT_SSL_VERIFYPEER, TRUE);
//curl_setopt($c, CURLOPT_SSL_VERIFYHOST, TRUE);
curl_setopt($c, CURLOPT_HEADER, FALSE);

$html=curl_exec($c);

if($html === false) {
    echo curl_error($c);
}
else {
    echo 'Operation completed without any errors';
}   


curl_close($c);

Any ideas?

Answers

Maybe a DNS issue?

Try your URL against this code:

$_h = curl_init();
curl_setopt($_h, CURLOPT_HEADER, 1);
curl_setopt($_h, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($_h, CURLOPT_HTTPGET, 1);
curl_setopt($_h, CURLOPT_URL, 'YOUR_URL' );
curl_setopt($_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));

Wednesday, November 9, 2022

amazighg-fe371d4465f3

Your code is OK. This is actually an DNS configuration problem on the dedicated server. Check that your hosting service permits outgoing curl connections.

Wednesday, August 17, 2022

imjustpondering

cURL is not able to verify the authenticity of the certificate being used, because the certificate for the signing authority cannot be found in the local database.

This might be symptomatic of a self signed certificate being used.

What you should do is add the certificate for the signing authority to /etc/ssl/certs/ca-certificates.crt.

What you can do is use curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);, which will disable the check that is failing.

You really should use the first option.

Wednesday, August 31, 2022

nc3b

you should check examples from here http://php.net/manual/en/curl.examples.php

Bellow is the code for you case,

$url = "http://build:f9280f75396f83a0@mobile-jenkins.domain.com:8080/job/android-test/buildWithParameters";     
$data = "POST_RESULTS=true&RUN_ID=".$testrun_id."&CHECK_NAME=SampleAutomatedPlan";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);  
curl_setopt($ch, CURLOPT_POSTFIELDS, $data); 

// $output contains the output string
$output = curl_exec($ch);

// close curl resource to free up system resources
curl_close($ch);

Saturday, October 15, 2022

le_sang

You need to specify full path of the file, e.g.:

$url = 'http://example.com/saved_report.xml';

as curl doesn't work with relative URLs

Friday, September 2, 2022

deepu

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CURL and HTTPS, “Cannot resolve host”

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