recaptchalib.php: Could not open socket (Fix included)

[rikk]

recaptchalib.php: Could not open socket (Fix included)

[GoogleCodeExporter]

Here is my patched version of the recaptchalib.php

Original comment by [email protected] on 28 Oct 2008 at 9:10

Attachments:

• recaptchalib.php

[GoogleCodeExporter]

Why can't fedora 9 handle fsockopen correctly, that seems extremely broken.

Original comment by ben.maurer on 28 Oct 2008 at 2:57

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

It does it on my CentOS 5.2 (32bit) testing server too, and I installed the LAMP
stack from source (as the yum versions are so old!). Seems to either be a 
redhat or
php bug, I have googled it but not seen any answers.

Original comment by [email protected] on 28 Oct 2008 at 4:53

[GoogleCodeExporter]

Thank you, this fix has been implemented into WP-reCAPTCHA and will be in the 
next
release.

Original comment by [email protected] on 7 Nov 2008 at 11:40

[GoogleCodeExporter]

This fix can be dangerous because it does a dns resolution on every page view. 

Original comment by ben.maurer on 8 Nov 2008 at 12:27

[GoogleCodeExporter]

Dangerous?

I suppose it would be more efficient to only run the "gethostbyaddr()" just 
before it
is used by fsockopen in the function, but for simplicity I just altered the 
Constant
as it is at the top of the file.

Original comment by [email protected] on 9 Nov 2008 at 8:52

[GoogleCodeExporter]

How about in recaptcha_check_answer, right before the call to 
_recaptcha_http_post,
which is the function that calls fsockopen. This way it would only be called 
when it
needs to check the answer right?

define("RECAPTCHA_VERIFY_SERVER", gethostbyname('api-verify.recaptcha.net'));

$response = _recaptcha_http_post (RECAPTCHA_VERIFY_SERVER, "/verify",

Original comment by [email protected] on 9 Nov 2008 at 9:42

[GoogleCodeExporter]

Er, in that case I should just make it:

$response = _recaptcha_http_post (gethostbyname('api-verify.recaptcha.net'), 
"/verify",

Does that seem fine?

Original comment by [email protected] on 9 Nov 2008 at 9:43

[GoogleCodeExporter]

I tested the suggested fix but it still doesn't work. My site is hosted on 
aplusnet
bussines hosting plan, but on my local machine everything works perfect. 

Original comment by [email protected] on 29 Jan 2009 at 10:05

[GoogleCodeExporter]

This fix doesn't work for me either. Always getting "Could not open socket" 
error.

Original comment by [email protected] on 4 Feb 2009 at 12:20

[GoogleCodeExporter]

Hi All,

I'm getting the same error... I have tried the fix, but it doesn't work...

any siggestion???

thanks all

vit

Original comment by [email protected] on 23 Jun 2009 at 5:23

[GoogleCodeExporter]

it fixed the issue for me

Original comment by [email protected] on 14 Jul 2009 at 6:08

[GoogleCodeExporter]

I have tried that repatched version and I still get the 'could not open socket' 
error.

Original comment by [email protected] on 16 Jul 2009 at 6:19

[GoogleCodeExporter]

Using the mediawiki plugin, fix doesn't work for me either...

Original comment by krakout on 2 Sep 2009 at 8:32

[GoogleCodeExporter]

I'm wondering if the server was offline. I just tried this fix and it worked. 
Just
for kicks and grins, I changed the code back to the original and it still 
worked. I'm
looking at coincidence.

I also found other threads where people changed their keys, which seemed to 
work for
some of them. Probably a timing thing. If the server came back on while you were
making your change, you met with success.

Original comment by [email protected] on 29 Oct 2009 at 10:09

[GoogleCodeExporter]

I changed my lib to allow the user to continue if the script could not connect. 
A
more secure solution would probably be to provide an alternate validation scheme
perhaps by setting $recaptcha_response->is_valid = alternate and checking for 
that in
the page script.

Line 80 is now:
/*die ('Could not open socket - reCaptcha');*/ return 'socket error';

Line 184... I wrapped the solution and existing code in an if-else:
if ($response == 'socket error')
{
$recaptcha_response->is_valid = true;
}
else
{
    $answers = explode ("\n", $response [1]);
    $recaptcha_response = new ReCaptchaResponse();

    if (trim ($answers [0]) == 'true') {
        $recaptcha_response->is_valid = true;
    }
    else {
        $recaptcha_response->is_valid = false;
        $recaptcha_response->error = $answers [1];
    }
}

Original comment by [email protected] on 29 Oct 2009 at 10:52

[GoogleCodeExporter]

 fix didn't work for me too... Still getting the error

Original comment by [email protected] on 25 Jun 2010 at 5:53

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

The reCAPTCHA wasn't entered correctly. Go back and try it again.(reCAPTCHA 
said: incorrect-captcha-sol) 

Original comment by [email protected] on 30 Jul 2010 at 5:56

[GoogleCodeExporter]

Looks like nobody cud solve this damn problem...... i ve tried all the 
suggestions to the same result..... "Could not open socket"

Original comment by [email protected] on 3 Aug 2010 at 10:17

[GoogleCodeExporter]

Can anybody update how to check if fsockopen() is working or not??

Original comment by [email protected] on 3 Aug 2010 at 10:19

[GoogleCodeExporter]

Are you guys behind a proxy server?

Original comment by [email protected] on 6 Aug 2010 at 8:54

[GoogleCodeExporter]

Im having the same problem on an ubuntu 10.04 LAMP and reCaptcha PHP plugin 
install.
Ive tried a couple of fixes from above and the problem is still there. Using a 
dedicated server from a respectable web hosting company.

The weird thing is, sometimes the errors pops-up, sometimes it doesn't. If the 
error pops-up, and try again, there's a chance it'll work. I guess it's about 
50/50 each time the script is ran.

Original comment by [email protected] on 7 Aug 2010 at 11:43

[GoogleCodeExporter]

google, i'll clap your asses!, i've lost 2 hours of my life screwing this 
captcha, and it's same socket error...Shame on you!

Original comment by [email protected] on 13 Aug 2010 at 4:37

[GoogleCodeExporter]

Am on centos 5.5 and its private domain and I still have the issue with latest 
2.9.7. Could someone help..

Original comment by [email protected] on 15 Aug 2010 at 5:10

[GoogleCodeExporter]

Same problem here on Debian Lenny, up to date system, latest library.

Original comment by [email protected] on 16 Aug 2010 at 8:54

[GoogleCodeExporter]

you guys are using the plugin downloaded from this website? It's outdated, you 
should be using the one from here: 
http://wordpress.org/extend/plugins/wp-recaptcha/

Original comment by [email protected] on 16 Aug 2010 at 9:03

[GoogleCodeExporter]

The source code of comment 28 looks like a spammer/obscure download. Google, 
where is the fix for the original version?

Original comment by [email protected] on 20 Aug 2010 at 9:09

[GoogleCodeExporter]

I'm having the same issue.

Google or ReCaptcha people. Any clue?

Debian GNU/Linux 5.0 here.

I've tried all of the above solutions, but none gave the optimal result.

Thanks in advance!!

Original comment by [email protected] on 22 Aug 2010 at 12:36

[GoogleCodeExporter]

Solved this problem by applying the patch, then linking /etc/resolv.conf to 
/etc/httpd/etc/resolv.conf (in fedora) and /etc/apache2/etc/resolv.conf (in 
ubuntu...), then restarting apache....

Original comment by [email protected] on 8 Sep 2010 at 5:02

[GoogleCodeExporter]

It seems i am screwed!

Original comment by [email protected] on 6 Oct 2010 at 10:54

[GoogleCodeExporter]

Although it's been working flawlessly for more than a year, this issue suddenly 
appeared... why ?

I really don't know how to solve this because I didn't modify anything in PHP 
config. I've also tried fix from #1 without success.

Lawrence, did you get the issue suddenly like I did too or it never worked 
before ?

Original comment by [email protected] on 19 Oct 2010 at 8:31

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

I found a fix to recaptchalib.php v1.11

-in this line:
define("RECAPTCHA_VERIFY_SERVER", "www.google.com");

-replace "www.google.com" with it's IP address.
define("RECAPTCHA_VERIFY_SERVER", "173.194.36.104");

Try to look for the IP address yourself if this one don't work, I'm not sure if 
its the same at different locations(?).

Original comment by [email protected] on 11 Nov 2010 at 6:56

[GoogleCodeExporter]

Make sure it isn't the server which is blocking it, I tried all different kinds 
of solutions but couldn't get it to work, then simply uploaded it onto another 
host, and it worked perfectly. 
And use the latest version with
 define("RECAPTCHA_VERIFY_SERVER", "www.google.com");
works like a charm

Good luck

Original comment by [email protected] on 12 Nov 2010 at 12:36

[GoogleCodeExporter]

I had the same issue. Strangely I solved it by closing the php code after 
recaptha section, then immediately reopening it!

Original comment by [email protected] on 28 Nov 2010 at 12:23

[GoogleCodeExporter]

actually the problem is back now

Original comment by [email protected] on 29 Nov 2010 at 6:26

[GoogleCodeExporter]

I used recaptcha last week for first time and was okay..
but now, get the same problem

Original comment by [email protected] on 22 Dec 2010 at 6:53

[GoogleCodeExporter]

"Could not open socket" does anyone has the answer for this issue?

Original comment by [email protected] on 22 Dec 2010 at 7:16

[GoogleCodeExporter]

I use the server of name: 000webspace.com, this server shows me the message 
"Could not open socket. " I do not know. but maybe in the server configuration 
can be done, but on my computer "appserv" seems all well and good

Original comment by [email protected] on 27 Dec 2010 at 5:34

[GoogleCodeExporter]

I use the server of name: 000webspace.com, this server shows me the message 
"Could not open socket. " I do not know. but maybe in the server configuration 
can be done, but on my computer "appserv" seems all well and good

Original comment by [email protected] on 27 Dec 2010 at 5:35

[GoogleCodeExporter]

I think those of us on shared hosting may get this problem because the host 
server admin is not allowing us to open sockets. I am using Zymic. There 
servers don't allow you to use sockets - so ReCaptcha is not a suitable 
solution :(

Original comment by [email protected] on 1 Jan 2011 at 10:09

[GoogleCodeExporter]

Any fix for this? cause i STILL have this problem... :(

Original comment by [email protected] on 4 Jan 2011 at 8:17

[GoogleCodeExporter]

For several months reCaptcha is running smoothly and since yesterday I get a 
sudden the message "Could not open socket." Does anyone have a solution?

Original comment by [email protected] on 6 Jan 2011 at 2:13

[GoogleCodeExporter]

Me too.  It's been has been fine for the last few months and then today it 
started happening again. http://commentwars.org/register 

Original comment by [email protected] on 7 Jan 2011 at 7:12

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

It's not programming problem. 
You have to ask network admin.. 
They have to open port :80 

Original comment by [email protected] on 10 Feb 2011 at 12:26

[GoogleCodeExporter]

I've seen this port 80 thing mentioned on other forums.  

I don't think so.  

In my Fedora Core 13 system, I went so far as to take the firewall completely 
down and I still get the "Could not open socket".

This problem cropped up on system that was essentially running several months 
untouched.

From what I can tell, the problem comes from the system not being able to 
resolve a host name (wouldn't it be cool if the error message said that?).  
That can happen for a lot of reasons...

Original comment by [email protected] on 23 Mar 2011 at 3:36

[GoogleCodeExporter]

I'm using recaptcha-form.1.2.zip downloaded from 
http://wordpress.org/extend/plugins/recaptcha-form/ and i'm getting the same 
error. I try to use the fix, but doesn't works for me. It's not seem to be a 
resolution problem...

Any solutions or new notice this issue?

Original comment by [email protected] on 16 May 2011 at 6:41

[GoogleCodeExporter]

No solution. Me in the first half of the day got error and in the second half 
works fine with the same code. Seems google it self can help us.

Original comment by [email protected] on 16 Jul 2011 at 9:07

[GoogleCodeExporter]

We implemented ASL Security with mod_security and seemed to cause the issue so 
we are looking to see if there is a resolution there.

Original comment by [email protected] on 25 Jul 2011 at 5:58

[GoogleCodeExporter]

I'm facing this same issue.. :/ could not open socket... Even with the fix.

I think google has abandoned recaptcha...

Big 404 here:

http://recaptcha.net/plugins/php/

Original comment by [email protected] on 31 Jul 2011 at 5:11

[GoogleCodeExporter]

@all: your web hosting must support php fsock function to do this . .

# sorry if my english is bad , i'm from west-borneo (indonesia) . . :)

Original comment by [email protected] on 4 Aug 2011 at 3:03

[GoogleCodeExporter]

Eish same here

Original comment by [email protected] on 15 Aug 2011 at 11:58

[GoogleCodeExporter]

Eish same here, Could not open socket

Original comment by [email protected] on 15 Aug 2011 at 11:59

[GoogleCodeExporter]

If this works on your local machine and not on you host domain then ask your 
host admin to open the port:80.

Original comment by [email protected] on 14 Oct 2011 at 1:51

[GoogleCodeExporter]

Comment 17 by [email protected], Oct 29, 2009 

------

Slightly modifying B Taylor's solution did the trick for me, it's not perfect 
but it's good enough and won't trigger any warning:

$recaptcha_response = new ReCaptchaResponse();
if ($response == 'socket error') {
    $recaptcha_response->is_valid = true;
} else {
    $answers = explode ("\n", $response [1]);
if (trim ($answers [0]) == 'true') {
    $recaptcha_response->is_valid = true;
} else {
     $recaptcha_response->is_valid = false;
     $recaptcha_response->error = $answers [1];
}
}
return $recaptcha_response;

Original comment by [email protected] on 20 Oct 2011 at 1:49

[GoogleCodeExporter]

Please, why am i getting this error:

Image Verification failed!. Go back and try again.
(reCAPTCHA said: )

josephbupe

Original comment by [email protected] on 17 Dec 2011 at 2:17

[GoogleCodeExporter]

no, this fix doesnt work, it doesnt verify the correct letters given and gives 
error to re-enter them corectly. :(

Original comment by [email protected] on 6 Mar 2012 at 10:38

[GoogleCodeExporter]

I found the fix...
plz update ur recaptchalib.php from here
it works now :)

Original comment by [email protected] on 6 Mar 2012 at 11:05

[GoogleCodeExporter]

No, it still does not work. I've tried both downloading the newest lib, and 
making the suggested changes to it, but without success. 

Original comment by [email protected] on 8 Mar 2012 at 8:31

[GoogleCodeExporter]

Actually, it does work from a different host. Must be some kind of network 
infrastructure problem @ the host.

Original comment by [email protected] on 8 Mar 2012 at 10:19

[GoogleCodeExporter]

Has any recent progress been made against this issue? I'm still experiencing 
this problem after updating my lib to v1.11 and updating my public and private 
keys for my domain.

Original comment by [email protected] on 29 Apr 2012 at 11:51

[GoogleCodeExporter]

aqui la solución... Here the solution.. ;-)
http://hellowahab.wordpress.com/2012/02/15/recaptcha-cannot-connect-to-host-prob
lem-behind-a-proxy/

Original comment by [email protected] on 8 May 2012 at 7:48

[GoogleCodeExporter]

replace---->  define("RECAPTCHA_VERIFY_SERVER", "www.google.com"); to this

define("RECAPTCHA_VERIFY_SERVER", "74.125.236.178");

worked on Linux fedora 17

Original comment by [email protected] on 15 Jun 2012 at 12:42

[GoogleCodeExporter]

What happens when/if Google changes their IP. You will have to change the code 
on each site you've made this fix to?

Original comment by [email protected] on 20 Jun 2012 at 9:41

[GoogleCodeExporter]

yes you're correct.i'm thinking this not a PHP problem or RECAPTCHA lib 
problem.something with OS or DNS problem i'm don't know much about it. if 
Google not changes their IP this fix should not be a problem.you can replace 
the modified RECAPTCHA lib on each site.     

Original comment by [email protected] on 23 Jun 2012 at 10:46

[GoogleCodeExporter]

I was facing the same issue today. but i had solved my problem after i contact 
to my network administrator.

It is possible that you do not have direct access to port 80 as a organisation 
in which you are working has set up a proxy using a firewall system. so please 
contact your administrator before saying anything to google as we all depends 
on it.. :)

port 80 is used in function "_recaptcha_http_post" in recapchalib.php and the 
error of socket occurs on line 80 "@fsockopen" function.

I am using recaptcha on my localhost and it works fine for me. hope contacting 
to your network administrator or removing any kind of proxy from your server 
work for you all.

Have a nice day...

Original comment by [email protected] on 20 Jul 2012 at 9:41

[GoogleCodeExporter]

I am using WHMCS software and upon implementing recaptcha (comes included - as 
an option) it displays, but when I submit the form, it shows the following: 
reCAPTCHA Error: Could not open socket

What's worse, the library is obfuscated with ionCube (probably something they 
did to it and don't want it to be messed with). I am running a godaddy economy 
reseller account that is running CENTOS 6.2 x86_64, PHP v5.3. Not sure why this 
is acting up.

Original comment by [email protected] on 21 Aug 2012 at 3:39

[GoogleCodeExporter]

The comment 66 resolved for me. 

"
replace---->  define("RECAPTCHA_VERIFY_SERVER", "www.google.com"); to this

define("RECAPTCHA_VERIFY_SERVER", "74.125.236.178");
"

Original comment by [email protected] on 17 Nov 2012 at 7:36

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

Hello I Read all the post!! Is there an other URL for 
RECAPTCHA_VERIFY_SERVER??? Cuz I get the Same Error: Could not open socket. I 
try everything!!! Y check it my configuration php.ini and mi allow_url_fopen 
its on!! and I try with gethostbyname()and failing too...

define("RECAPTCHA_API_SERVER", "http://www.google.com/recaptcha/api");
define("RECAPTCHA_API_SECURE_SERVER", "https://www.google.com/recaptcha/api");
define("RECAPTCHA_VERIFY_SERVER", "74.125.236.178");

This is a fragment of my library!! please help me!!!

Original comment by [email protected] on 21 Feb 2013 at 8:25

[GoogleCodeExporter]

I have the same problem than AL10529...

Original comment by [email protected] on 4 Mar 2013 at 3:56

[GoogleCodeExporter]

what is this

Original comment by [email protected] on 13 Mar 2013 at 1:28

[GoogleCodeExporter]

I had this problem, it turned out my dedicated ubuntu 12.10 box was not 
preforming dns lookups.

Anyone that has this issue within on ubuntu / or similar distro check this :

Terminal : ping -c 4 google.com

if it replys -> ping: unknown host google.com

it means your name servers and resolv.conf isnt correct and you need to 
reconfigure it.

Edit this file :

/etc/resolv.conf || /etc/resolvconf/resolv.conf.d/head

# Google's...
nameserver 8.8.8.8
nameserver 8.8.4.4
nameserver 127.0.0.1 # For my own domains on the machine.

then once done reconfigure the resolvconf via :

sudo dpkg-reconfigure resolvconf

then reboot the server via your host manager || power || sudo reboot

Then once back on the terminal check again that pinging google works.

Also note some hosting providers probably wont allow you to preform lookups / 
create sockets.

Original comment by [email protected] on 21 Mar 2013 at 12:59

[GoogleCodeExporter]

Changing the verify line in the recaptchalib.php file worked for me.

as suggested above:
define("RECAPTCHA_VERIFY_SERVER", "74.125.236.178");

Original comment by [email protected] on 18 Apr 2013 at 5:04

[GoogleCodeExporter]

i am having same issue "could not open socket", how to solve this :(

Original comment by [email protected] on 1 Aug 2013 at 9:20

[GoogleCodeExporter]

Comments 66 and 78, worked for me, thanks guys!

Original comment by [email protected] on 5 Aug 2013 at 6:14

[GoogleCodeExporter]

Not working Properly. e.g. if captcha code is given "abc def" and we are 
entering " abc defgh", then it does not show any error and if we enter "abc de" 
then also same issue is there.

Original comment by [email protected] on 16 Aug 2013 at 8:52

[GoogleCodeExporter]

doesnt work on me either. This is only i get "The reCAPTCHA wasn't entered 
correctly. Go back and try it again.(reCAPTCHA said: )" No error message or 
success message

Original comment by [email protected] on 4 Sep 2013 at 8:43

[GoogleCodeExporter]

I use @pfsockopen  instead of @fsockopen in recaptchalib.php  and problem solved

Original comment by [email protected] on 15 Sep 2013 at 2:03

[GoogleCodeExporter]

Comments 83, worked for me, thanks guys!

Original comment by [email protected] on 22 Oct 2013 at 10:41

[GoogleCodeExporter]

i use all the solution here, but still i have error. "Could not open socket". 
help please :(

Original comment by [email protected] on 5 Dec 2013 at 2:40

[GoogleCodeExporter]

I too used all solutions and nothing worked. Now I am requesting hosting 
provider to open port 80. Hope that helps.

Original comment by [email protected] on 9 Jan 2014 at 11:12

[GoogleCodeExporter]

comment #35 worked for me:

"-in this line:
define("RECAPTCHA_VERIFY_SERVER", "www.google.com");

-replace "www.google.com" with it's IP address.
define("RECAPTCHA_VERIFY_SERVER", "173.194.36.104");"

Thanks!

Original comment by [email protected] on 6 Feb 2014 at 5:22

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

for those getting the "Go back and try again" message ... find the latest 
recaptchalib.php here http://code.google.com/p/recaptcha/ and then make the ip 
address change as outlined above

Original comment by [email protected] on 16 Jul 2014 at 5:51

[GoogleCodeExporter]

Funcionó correctamente en  Joomla 2.5.4 luego de las siguientes modificaciones:

1) En Código: /public_html/plugins/captcha/recaptcha/recaptcha.php
a) Línea 24+-: const RECAPTCHA_API_SERVER = "http://api.recaptcha.net";
REEMPLAZADA POR:
const RECAPTCHA_API_SERVER = "http://www.google.com/recaptcha/api";

Línea 25+-: const RECAPTCHA_API_SECURE_SERVER = 
"https://www.google.com/recaptcha/api";

Línea 26+-: const RECAPTCHA_VERIFY_SERVER = "api-verify.recaptcha.net";
REEMPLAZADA POR:
const RECAPTCHA_VERIFY_SERVER = "www.google.com";

b) Línea 118 +-: $response = 
$this->_recaptcha_http_post(self::RECAPTCHA_VERIFY_SERVER, "/verify",
REEMPLAZADA POR:                
$response = $this->_recaptcha_http_post(self::RECAPTCHA_VERIFY_SERVER, 
"/recaptcha/api/verify",

c) Línea 189 +-: if (($fs = @fsockopen($host, $port, $errno, $errstr, 10)) == 
false )
REEMPLAZADA POR:
if (($fs = @pfsockopen(gethostbyname($host), $port, $errno, $errstr, 10)) == 
false )


2) Parámetro PHP.ini: allow_url_fopen=On

Thanks!

Original comment by [email protected] on 15 Aug 2014 at 12:00