I have a wordpress site that its failing. I tracked the issue and I found that is due to curl_exec()
failing with HTTPS sites.
I'm running php 5.6 in a Alpine Linux v3.8 container with lighttpd.
The logs (error.log) don't give too much information:
(http-header-glue.c.1250) read(): Connection reset by peer 8 9
(gw_backend.c.2149) response not received, request sent: 1017 on socket: unix:/var/run/lighttpd/php.socket-0 for /curl_test.php?, closing connection
These are the related packages which are installed:
php5-common-5.6.40-r0
php5-cgi-5.6.40-r0
php5-gd-5.6.40-r0
php5-iconv-5.6.40-r0
php5-json-5.6.40-r0
php5-mysqli-5.6.40-r0
php5-zip-5.6.40-r0
php5-xml-5.6.40-r0
php5-dom-5.6.40-r0
php5-intl-5.6.40-r0
php5-ctype-5.6.40-r0
php5-mysql-5.6.40-r0
php5-openssl-5.6.40-r0
php5-curl-5.6.40-r0
curl-7.61.1-r2
libcurl-7.64.1-r1
libssl1.1-1.1.1b-r1
ssl_client-1.30.1-r1
libressl2.7-libcrypto-2.7.5-r0
libressl2.7-libssl-2.7.5-r0
libssl1.0-1.0.2r-r0
lighttpd-1.4.53-r1
lighttpd-openrc-1.4.53-r1
openssl-1.0.2r-r0
ca-certificates-cacert-20190108-r0
ca-certificates-20190108-r0
I have tried to display errors on screen (using error_reporting, etc) but it seems that its crashing before being able to get the error.
I found this similar question, but I believe its not about the code, but more about some library or setting missing in my installation.
The code I'm using for testing is:
error_reporting(E_ALL); ini_set('display_errors', 1);
$curl = curl_init( 'https://example.com' );
curl_setopt($curl, CURLOPT_CAINFO, '/etc/lighttpd/cacert.pem');
curl_setopt($curl, CURLOPT_CAPATH, '/etc/ssl/certs');
curl_setopt( $curl, CURLOPT_POST, true );
curl_setopt( $curl, CURLOPT_POSTFIELDS, array( 'field1' => 'some data', 'field2' => 'some more data' ) );
curl_setopt( $curl, CURLOPT_RETURNTRANSFER, true );
$response = curl_exec( $curl );
curl_close( $curl );
Note: I downloaded cacert.pem from here, and /etc/ssl/certs/
is not empty.
The error displayed is: "500 Internal Server Error".
Not even disabling SSL check works:
curl_setopt($curl, CURLOPT_VERBOSE, true);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
All works if instead of "https" I change it to "http".
What am I missing?
UPDATE (1)
Following this question I executed:
$w = stream_get_wrappers();
echo 'openssl: ', extension_loaded ('openssl') ? 'yes':'no', "\n";
echo 'http wrapper: ', in_array('http', $w) ? 'yes':'no', "\n";
echo 'https wrapper: ', in_array('https', $w) ? 'yes':'no', "\n";
echo 'wrappers: ', var_export($w);
The result is:
openssl: yes
http wrapper: yes
https wrapper: yes
wrappers: array (
0 => 'compress.zlib',
1 => 'php',
2 => 'file',
3 => 'glob',
4 => 'data',
5 => 'http',
6 => 'ftp',
7 => 'https',
8 => 'ftps',
9 => 'zip',
)
Note: allow_url_fopen
is on.
UPDATE (2)
I moved the site into a fresh container and it works fine. Some library or something was causing this issue.