How to resolve cURL Error 7 couldn t connect to host

Question

I send an item code to a web service in xml format using cUrl php   I get the correct response in localhost  but when do it server it shows      cURL Error  7   couldn t connect to host   And here s my code   function xml post  post xml   url         user agent     SERVER  HTTP USER AGENT          ch   curl init          initialize curl handle     curl setopt  ch  CURLOPT SSL VERIFYPEER  FALSE       curl setopt  ch  CURLOPT URL   url        curl setopt  ch  CURLOPT FAILONERROR  1                 curl setopt  ch  CURLOPT FOLLOWLOCATION  1           curl setopt  ch  CURLOPT RETURNTRANSFER 1        curl setopt  ch  CURLOPT TIMEOUT  50        curl setopt  ch  CURLOPT POSTFIELDS   post xml        curl setopt  ch  CURLOPT USERAGENT   user agent       curl setopt  ch  CURLOPT PORT   port                   data   curl exec  ch        curl errno   curl errno  ch        curl error   curl error  ch       if   curl errno  gt  0                echo  cURL Error   curl errno    curl error n         else               echo  Data received n             curl close  ch        echo  data      I send the item code to the tally and fetch the details from it  I tried using both the versions php 4  and php5   nothing works out Any solution

User · Answer

CURL ERROR 7 Failed to connect to Permission denied    error is caused  when for any reason curl request is blocked by some firewall or similar thing   you will face this issue when ever the curl request is not with standard ports   for example if you do curl to some URL which is on port 1234  you will face this issue where as URL with port 80 will give you results easily   Most commonly this error has been seen on CentOS and any other OS with    SElinux      you need to either disable or change     SElinux    to permissive  have a look on this one  http   www akashif co uk php curl-error-7-failed-to-connect-to-permission-denied  Hope this helps

User · Answer

If you have tried all the ways and failed  try this one command   setsebool -P httpd can network connect on

User · Answer

Are you able to hit that URL by browser or by PHP script  The error shown is that you could not connect  So first confirm that the URL is accessible

User · Answer

you can also get this if you are trying to hit the same URL with multiple HTTP request at the same time Many curl requests wont be able to connect and so return with error

User · Answer

CURL error code 7  CURLE COULDNT CONNECT    is very explicit      it means Failed to connect   to host or proxy    The following code would work on any system    ch   curl init  http   google com          initialize curl handle curl setopt  ch  CURLOPT FOLLOWLOCATION  1    data   curl exec  ch   print  data     If you can not see google page then    your URL is wrong or you have some firewall or restriction issue

User · Answer

In my case  the problem was caused by the hosting provider I was using blocking http packets addressed to their IP block that originated from within their IP block   Un-frickin-believable

User · Answer

This issue can also be caused by making curl calls to https when it is not configured on the remote device  Calling over http can resolve this problem in these situations  at least until you configure ssl on the remote

User · Answer

In PHP  If your network under proxy  You should set the proxy URL and port  curl setopt  ch  CURLOPT PROXY   http   url com      your proxy url curl setopt  ch  CURLOPT PROXYPORT   80       your proxy port number   This is solves my problem

User · Answer

In my case I had something like cURL Error  7       Operation Timed Out  I m using the network connection of the company I m working for  I needed to create some environment variables  The next worked for me   In Linux terminal     export https proxy yourProxy 80   export http proxy yourProxy 80     In windows I created  the same  environment variables in the windows way   I hope it helps   Regards

User · Answer

Check if port 80 and 443 are blocked  or enter -  IP graph facebook com and enter it in etc hosts file

[php] How to resolve cURL Error (7): couldn't connect to host?

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