[google-appengine] How to configure useragent in curl php google app engine production environment?

[Vivekanand Ilango]

I am trying to extract data from nseindia site. It works fine in the 
development environment but after I deploy to the production cloud I get 
permission denied.


Output if run in local development environment:

$ php helloworld.php
UNDERLYING                          ,SYMBOL    ,DEC-16     ,JAN-17     ,FEB-17  
   ,MAR-17     ,JUN-17     ,SEP-17     ,NOV-16     ,DEC-17     ,JUN-18     
,DEC-18     ,JUN-19     ,DEC-19     ,JUN-20     ,DEC-20     ,JUN-21     
NIFTY BANK                          ,BANKNIFTY ,40         ,40         ,40      
   ,           ,           ,           ,           ,           ,           ,    
       ,           ,           ,           ,           ,           
NIFTY 50                            ,NIFTY     ,75         ,75         ,75      
   ,75         ,75         ,75         ,           ,75         ,75         ,75  
       ,75         ,75         ,75         ,75         ,75         


Output on running in production attached "ProductionError.jpg"


helloworld.php <?php try { //curl get function curl_get( $curl, $url, 
$cookiefile) { curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, 
CURLOPT_FOLLOWLOCATION, false); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 
1); curl_setopt($curl, CURLOPT_USERAGENT,"Mozilla/5.0 (Windows; U; Windows 
NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1" ); 
//curl_setopt($curl, CURLOPT_COOKIEJAR, $cookiefile); curl_setopt($curl, 
CURLOPT_COOKIEFILE, $cookiefile); curl_setopt($curl, 
CURLOPT_SSL_VERIFYPEER, false); $data = curl_exec($curl); return $data; } 
//curl post function curl_post( $curl, $url, $cookiefile, $post) { 
curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_POST, 1); 
curl_setopt($curl, CURLOPT_POSTFIELDS, $post); curl_setopt($curl, 
CURLOPT_FOLLOWLOCATION, false); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 
1); curl_setopt($curl, CURLOPT_USERAGENT,"Mozilla/5.0 (Windows; U; Windows 
NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1" ); 
//curl_setopt($curl, CURLOPT_COOKIEJAR, $cookiefile); curl_setopt($curl, 
CURLOPT_COOKIEFILE, $cookiefile); curl_setopt($curl, 
CURLOPT_SSL_VERIFYPEER, false); $data = curl_exec($curl); return $data; } 
//cookie file $cookiefile = "cookie.txt"; $output = system("curl -A 
,'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) 
Gecko/20080311 Firefox/2.0.0.13' --url 
https://www.nseindia.com/content/fo/fo_mktlots.csv";);


        $curl = curl_init( );

        $data = curl_get( $curl, 
"https://www.nseindia.com/content/fo/fo_mktlots.csv";, $cookiefile);
        echo $data;

        $data = curl_post( $curl, 
"https://www.nseindia.com/content/fo/fo_mktlots.csv";, $cookiefile, "");
        echo $data;
} catch (Exception $e) {
        echo 'Caught exception: ',  $e->getMessage(), "\n";
}

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