Bug #74764 [Opn->Csd]: Bindto IPv6 works with file_get_contents but fails with stream_socket_client

Edit report at https://bugs.php.net/bug.php?id=74764&edit=1 ID: 74764 Updated by: krakjoe@php.net Reported by: info at directwebsolutions dot nl Summary: Bindto IPv6 works with file_get_contents but fails with stream_socket_client -Status: Open +Status: Closed Type: Bug Package: Streams related Operating System: CentOS PHP Version: 5.6.30 Block user comment: N Private report: N New Comment: Automatic comment on behalf of vhu@iki.fi Revision: http://git.php.net/?p=php-src.git;a=commit;h=0f724453c03b7ff500563c019f5dab736d326ad8 Log: Fix bug #74764 and add a test case Previous Comments: ------------------------------------------------------------------------ [2018-08-30 03:59:58] vhu at iki dot fi There is the PR to fix this: https://github.com/php/php-src/pull/3474 ------------------------------------------------------------------------ [2018-01-20 10:17:32] vklimin at 51070 dot com Hi! I have this problem on Debian 8, PHP 7.1. $url = 'https://www.yandex.ru'; $ip = '[2a01:d8:4:3::49c]'; $opts = array ( 'http' => array ( 'method' => "GET", 'header' => "Referer: https://www.yandex.ru/\r\n" . "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36\r\n" ), 'socket' => array ( 'bindto' => "{$ip}:0" ), ); $context = stream_context_create( $opts ); $c = file_get_contents( $url, false, $context ); This script generates "FastCGI sent in stderr: "PHP message: PHP Warning: file_get_contents(): Invalid IP Address: 2a01:d8:4:3::49c in ..." ------------------------------------------------------------------------ [2017-06-15 21:12:54] info at directwebsolutions dot nl Description: ------------ PHP 5.6.30 (cli) (built: Jun 2 2017 12:27:19). I experienced the same problem with PHP 7.1. I think it is a bug which is in PHP for quite a long time if this is the same as bug ( https://bugs.php.net/bug.php?id=50415 ) which was not solved in the past. What I try to do is: - create streaming socket using SSL - binding to a local IP which is not the default IP of the ethernet card (NIC) but an additional configured address and is IPv6 (important!). I runned quite a few tests with different parameters. I copied the code to a single file and executed it as root in SSH to make sure it is not a problem with privileges within the user account. I can connect with the desired IPv6 binding to any website using stream_context_create() on a file_get_contents() execution. I tried this to several websites which have functionality on their website to show my visitor IP address and then my correct IPv6 address is displayed, and thus used. But when I try to connect with the same IPv6 binding and exactly the same stream_context_create() but change the function using the $context to be stream_socket_client() then all requests fail and falls back to the servers default IPv4 or IPv6 address. Test script: --------------- Script 1 (ipv6 binding with file_get_contents): ----------------------------------------------- $context = stream_context_create( array('socket' => array('bindto' => "[octect1:octect2:octect3:octect4:0000:0000:0000:0020]:0", "ipv6_v6only" => "ipv6_v6only")) ); print file_get_contents('http://ipadres.bit.nl/', false, $context); Script 2 (ipv6 binding with stream_socket_client): ----------------------------------------------- $context = stream_context_create( array('socket' => array('bindto' => "[octect1:octect2:octect3:octect4:0000:0000:0000:0020]:0", "ipv6_v6only" => "ipv6_v6only")) ); $socket = stream_socket_client('ssl://'.$epp_host.':'.$epp_port.'', $errno, $errstr, 5, STREAM_CLIENT_CONNECT, $context); print $errno."<br>"; print $errstr."<br>"; var_dump($socket); Expected result: ---------------- Script 1: --------- A lot of HTML with my outgoing IPv6 address (octect1:octect2:octect3:octect4:0000:0000:0000:0020) inside the HTML page code. Script 2: --------- 0 *empty $errstr* resource(29) of type (stream) Actual result: -------------- Script 1: --------- My correct outgoing non default IPv6 address is bound and thus is inside the HTML page code. Script 2: --------- 111 Warning: stream_socket_client(): Invalid IP Address: octect1:octect2:octect3:octect4:0000:0000:0000:0020 bool(false) And because the IP address is invalid i also cannot connect to the desired servers because my IP does not pass through their firewall, so i get a connection refused. At the end of this bug report i found another streaming host which i could connect to which does not have a firewall in place, and then the correct IPv6 address CAN be bound with using the stream_socket_client() function. So that would mean that the error "Invalid IP Address" is just a wrong error for the situation when no connection is possible? What is happening here? Please look into this. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=74764&edit=1