Operation timed out after 5000 milliseconds with 0 bytes received

[seventh]

Hello!

Some posts succesfully submitted to facebook and twitter, but don’t submitted to VK.com. In logs I see:

[2016-02-08 22:08:09] - [Error] [vKontakte - https://vk.com/mygroup] - -=ERROR=- Array ( [pgID] => [isPosted] => 0 [pDate] => 2016-02-08 19:07:54 [Error] => Error: WP_Error Object ( [errors] => Array ( [http_request_failed] => Array ( [0] => Operation timed out after 5000 milliseconds with 0 bytes received ) ) [error_data] => Array ( ) ) ) | PostID: 4948 - post title |im

My own hosting – server at my home, I can do anything with it. What can I do?

______________
Sorry for my English.

[NextScripts.com]

Please see the answer in the FAQ – #1.10:

Support FAQ

[seventh]

I think the can be in curl and IPv6:

root@7th-server:~# curl -v vk.com/
* Trying 2a00:bdc0:3:103:1:0:403:907...
* Immediate connect fail for 2a00:bdc0:3:103:1:0:403:907: Сеть недоступна (network unreacheble)
* Trying 2a00:bdc0:3:103:1:0:403:908...
* Immediate connect fail for 2a00:bdc0:3:103:1:0:403:908: Сеть недоступна
* Trying 2a00:bdc0:3:103:1:0:403:909...
* Immediate connect fail for 2a00:bdc0:3:103:1:0:403:909: Сеть недоступна
* Trying 87.240.131.119...
* Connected to vk.com (87.240.131.119) port 80 (#0)
> GET / HTTP/1.1
> Host: vk.com
> User-Agent: curl/7.47.1
> Accept: */*


What can I do with it?

[seventh]

I think IPv6 generate timeouts. Google for it tell me that line:

curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4 );

Can I use it anywhere?
Or some other ways to use only IPv4?

Offtopic – thread notifications realy needed!
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Sorry for my English

[Author]

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