Errors in vbseo.php

M log has lots of error messages like below, some are different referrers. Any ideas? Thanks!

PHP Warning: file_exists(): Unable to find the wrapper "ttp" - di
d you forget to enable it when you configured PHP? in /usr/home/xxxx/www/vbseo.php on line 59, referer: http://www.xxxx.com/register.php

It looks like you have a bad url somehwere.

ttp
should be
http
most likely, thus the file_exist call returns the error.

Check all your settings.

Thanks, Brain. But I don't know where to look for, I have checked config.xml, no ttp found.

All errors were generated by line 59 and 62 in vbseo.php (version 3.5.2), if I knew where the URL possible comes from, it might be easier.

PHP Code:

global $vbseo_gcache, $found_object_ids;
if (VBSEO_RELPATH)
vbseo_chdir($vbseo_relpath);
if (vbseo_security_check($vbseo_url_))
vbseo_404();
59: $vbseo_file_exists = (file_exists($vbseo_url_) 
|| (file_exists(basename($vbseo_url_)) && strstr($vbseo_url_, '.' . VBSEO_VB_EXT))) 
&& ($vbseo_url_[strlen($vbseo_url_)-1] != '/');
62: $vbseo_file_exists_deep = file_exists($vbseo_url_) && strstr($vbseo_url_, '/');
$vbseo_found = false;
define('VBSEO_PREPROC', 1);
$vbseo_proc = VBSEO_ENABLED && !defined('VBSEO_UNREG_EXPIRED'); 


Check in your vboptions panel.

Can't find anything wrong there either.

Logged all error URLs, the error should be generated by this one:

ttp://www.mydomain.com/register.php

My wild guess is that some spammer requested this page with spam software. If I request this URL, my browser will refuse it.

Does this make sense to you?

that's not even a valid protocol it would never hit your server to log an error in the first place. It dies at the brower level.

it has to be an include or require /etc type command with a a url missing the h.

Now I can reproduce the error. Certain wrong URLs will cause this error, for example:
http://www.mydomain.com/anything://not_important

The error would be:

...Unable to find the wrapper "anything"...

The reason seems clear now, when a URL contains two "://", vbseo tests the second part as a file thus causes the error. It should be safe to discard it.