SOAP calls timing out

[elidrissidev]

Alright, so something strange happened lately, I was running an openmage instance locally at openmage.local along side other things like phpMyAdmin at phpmyadmin.local for a few months now but in the last week it stopped working completely, if I visit any of them chrome just shows ERR_NAME_NOT_RESOLVED. I thought a recent system update I did messed something up (I'm using Manjaro KDE btw) so I went checking if all services were running (httpd, php-fpm) and sure enough all of them were. My last resort was to change the virtual host name from .local to .localhost and they all started working again. But now SOAP calls were timing out, I followed the request using xdebug to identify what's causing this timeout and found out it was the call to checkdnsrr in Zend_Validate_Hostname:

magento-lts/app/code/core/Zend/Validate/Hostname.php

Lines 2503 to 2527 in 4e7a8e1

	/**
	* Returns true if any DNS records corresponding to a given Internet host are found.
	* Returns false if no DNS records were found or if an error occurred.
	* Checks A-Record.
	*
	* @param string $hostName
	*
	* @return bool
	*/
	protected function checkDnsRecords($hostName)
	{
	if (function_exists('idn_to_ascii')) {
	if (defined('IDNA_NONTRANSITIONAL_TO_ASCII') && defined('INTL_IDNA_VARIANT_UTS46')) {
	$toAscii = idn_to_ascii($hostName, IDNA_NONTRANSITIONAL_TO_ASCII, INTL_IDNA_VARIANT_UTS46);
	} else {
	$toAscii = idn_to_ascii($hostName);
	}
	$result = checkdnsrr($toAscii, 'A');
	} else {
	$idn = new Net_IDNA2();
	$result = checkdnsrr($idn->encode($hostName), 'A');
	}
	return $result;
	}

If I switch the host name to something like .com or .org it will work just fine.

Anyone has an idea on what's going on here? why did this stop working all of a sudden?

[addison74]

Let's check the file changes history here https://github.com/OpenMage/magento-lts/commits/1.9.4.x/app/code/core/Zend/Validate/Hostname.php.

The latest commit is here and it is related to checkDnsRecords function. Try to revert this commit and see what is happening

0412ad6#diff-51a775794b786e994252b5043afb525ca7e0162f64c53b6c6ca58399003a1bab

[elidrissidev]

Thanks for the reply, but the issue is related to checkdnsrr call itself, as far as I can see it was present even before that commit, for some reason it no longer works with my virtual hosts!
E.g. when calling php -r "var_dump(checkdnsrr('<host>', 'A'));" with the following hosts:

• localhost exists in my system and the command will return true immediately.
• openmage.local does not exist in my system and the command will return false immediately.
• openmage.localhost exists in my system and the command will take several seconds before returning false!

And in a single SOAP request there are several calls to checkdnsrr so it ends taking enough to timeout.