socket connection fails in php script while it works in terminal

Question

That is the script I have

<?php
    $timeout = 10;
    $target = "tls://testbed-epp.nominet.org.uk:700";

    $result = stream_socket_client($target, $errno, $errstr, 30, STREAM_CLIENT_CONNECT);
    if ($result === False) {
        throw new Exception("Error connecting to $target: $errstr (code $errno)");

    }

    echo "Connected";

And it throws an exception

Error connecting to tls://testbed-epp.nominet.org.uk:700: (code 0)

There is also a warning

WARNING: stream_socket_client(): Failed to enable crypto

At the same time running

 openssl s_client -connect testbed-epp.nominet.org.uk:700

in a terminal connects flawlessly.

Any ideas will be appreciated

alexandrfox · Accepted Answer · 2013-09-27 14:14:21Z

1

Try this instead:

$result = stream_socket_client("testbed-epp.nominet.org.uk:700", $errno, $errstr);

EDIT: also you can setup secure connection via stream_socket_enable_crypto() function, but you should note that it must be used AFTER initialization of socket connection.

answered Sep 27, 2013 at 14:14

alexandrfox

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1 Comment

Vladimir Hraban Over a year ago

Strangely it works without specifying the protocol. The problem is I can not edit that file because it is a third-party library. Besides that the same script works on another server just fine so there is something with the server configuration I suppose. My original concern was that in runs through VPN client installed on a VM node in a remote server. But as it turns out that's not the issue

aaron · Accepted Answer · 2013-09-27 14:22:06Z

1

Well, i tested your code on my apache server, and it is working fine. Can you check your apache configs. In the configs there is a parameter called "Registered Stream Socket Transports ". Just check if tls exists as a value over there, else there is some other problem, but it definitely isn't your script

answered Sep 27, 2013 at 14:22

aaron

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5 Comments

Vladimir Hraban Over a year ago

Doing phpinfo() shows that Registered Stream Socket Transports tcp, udp, unix, udg, ssl, sslv3, sslv2, tls

aaron Over a year ago

ok, this is strange but i noticed in your error above the $errstr is empty. You should have something. I tried changing the port and it gave me connection refused. Similarly, you should have something for this error

Vladimir Hraban Over a year ago

The thing is it is empty and the error code is 0. On my original script error logging catches a warning - WARNING: stream_socket_client(): Failed to enable crypto. I updated the question. Probably the reason warning was not shown in the test script is the fact I ran it through command line

aaron Over a year ago

do you have openssl extension enabled in your configs? I just realised i have openssl support enabled on apache.

Vladimir Hraban Over a year ago

It is enabled. If you are talking about httpd.conf LoadModule

Marc B · Accepted Answer · 2013-09-27 14:12:28Z

0

$timeout =- 10;
          ^----

You're setting $timeout to be negative 10 seconds. e.g. you're killing the connection attempt before it can EVER get started.

answered Sep 27, 2013 at 14:12

Marc B

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2 Comments

Vladimir Hraban Over a year ago

Thanks for the reply, it was a typo and in the original script it is positive. So this is not the reason I am afraid

CodeCaster Over a year ago

And the variable is not used, a hardcoded timeout of 30 is instead.

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