I grabbed the function curl_request_async from How do I make an asynchronous GET request in PHP?
// $type must equal 'GET' or 'POST'
function curl_request_async($url, $params, $type='POST')
{
foreach ($params as $key => &$val) {
if (is_array($val)) $val = implode(',', $val);
$post_params[] = $key.'='.urlencode($val);
}
$post_string = implode('&', $post_params);
$parts=parse_url($url);
$fp = fsockopen($parts['host'],
isset($parts['port'])?$parts['port']:80,
$errno, $errstr, 30);
// Data goes in the path for a GET request
if('GET' == $type) $parts['path'] .= '?'.$post_string;
$out = "$type ".$parts['path']." HTTP/1.1\r\n";
$out.= "Host: ".$parts['host']."\r\n";
$out.= "Content-Type: application/x-www-form-urlencoded\r\n";
$out.= "Content-Length: ".strlen($post_string)."\r\n";
$out.= "Connection: Close\r\n\r\n";
// Data goes in the request body for a POST request
if ('POST' == $type && isset($post_string)) $out.= $post_string;
fwrite($fp, $out);
fclose($fp);
}
It worked perfectly with my previous host but after I moved to a new host, it just does not work. I already installed php-curl but it's like the function just does not call the url.
There was no error given too. Please help I have been stuck with this for days.
One thing you could verify is if you can call fsockopen on your server, the code you posted does not use curl, but try to directly open a socket
Related
I got this function from Stack Overflow and it helped me really a lot as it worked fine on my local system but its not working on my server (Bluehost). What might be the issue, or how can I test it on my server to get it working?
function post_async1($url, array $params)
{
foreach ($params as $key => &$val) {
if (is_array($val)) $val = implode(',', $val);
$post_params[] = $key.'='.urlencode($val);
}
$post_string = implode('&', $post_params);
$parts=parse_url($url);
$fp = fsockopen($parts['host'],
isset($parts['port'])?$parts['port']:80,
$errno, $errstr, 30);
echo $out = "GET ".$parts['path']."?$post_string"." HTTP/1.1\r\n";//you can use POST instead of GET if you like
$out.= "Host: ".$parts['host']."\r\n";
$out.= "Content-Type: application/x-www-form-urlencoded\r\n";
$out.= "Content-Length: ".strlen($post_string)."\r\n";
$out.= "Connection: Close\r\n\r\n";
fwrite($fp, $out);
fclose($fp);
}
$params['id'] = 36;
post_async1('http://uda:8888/sendmail.php', $params);
The fsockopen function will work for outbound connection to any URL on port 80 (HTTP) or 443 (HTTPS). If fsockopen is attempting to use another port, it will not work until we have added that port to the firewall. you need to request them to open the socket
bluehost help
I have a problem which I couldn't solve almost a week. I searched everything but couldn't find an answer.
I need to do 3 x HTTP requests to the server and then receive answers.
First is GET request to get cookie. Second is POST with cookie and the third is redirect.
$host = "www.xx.com";
$user_agent = "User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20100101 Firefox/12.0\r\n";
$sock = fsockopen("ssl://$host", 443, $errno, $errstr, 30);
if (!$sock) die("$errstr ($errno)\n");
#########################################
# GET
#########################################
$request .= "GET $path HTTP/1.1\r\n";
$request .= "Accept: */*\r\n";
$request .= "Host: $host\r\n";
$request .= $user_agent;
$request .= "Connection: close\r\n";
$request .= "\r\n";
fwrite($sock, $request);
$http_response = stream_get_contents($sock);
list($headers, $body) = explode("\r\n\r\n", $http_response, 2);
// get cookie
preg_match_all('/Set-Cookie:\s*(.*)\b/', $headers, $cookie_res);
foreach($cookie_res[1] as &$val){
$cookie .= "Cookie: ".$val."\r\n";
}
echo "<pre><p>$headers<br />cookie: $cookie</p></pre>";
$data = preg_replace('/^\s+|\n|\r|\s+$/m', '', $data);
#########################################
# POST with cookie
#########################################
$request2 .= "POST $path"."filter/ HTTP/1.1\r\n";
$request2 .= "Host: $host\r\n";
$request2 .= $user_agent;
$request2 .= "Accept: text/html,application/xhtml+xml,application/xml;\r\n";
$request2 .= "Connection: keep-alive\r\n";
$request2 .= $cookie;
$request2 .= "Referer: $path\r\n";
$request2 .= "Content-type: application/x-www-form-urlencoded; charset=UTF-8\r\n";
$request2 .= "Content-length: " . strlen($data) . "\r\n";
$request2 .= "\r\n";
$request2 .= "$data\r\n";
$request2 .= "\r\n";
fwrite($sock, $request2);
$http_response2 = stream_get_contents($sock);
list($headers2, $body2) = explode("\r\n\r\n", $http_response2, 2);
echo "<pre><p>$headers2</p></pre>";
So I get response after the first GET request, but I don't get response after POST request.
If I close connection after first request and reopen it again before second then it works. But I want to do it in one connection. I don't understand why it doesn't work without reconnecting.
Please help! :)
P.S. don't recommend to use CURL because I don't have it installed on this server.
My PHP code currently uses the following to Postback to PayPal. How do I update this to meet the new payment security standards coming into effect?
$req = 'cmd=_notify-validate';
foreach ($_POST as $key => $value)
{
$value = urlencode(stripslashes($value));
$req .= "&$key=$value";
}
// post back to PayPal system to validate
$header = "POST /cgi-bin/webscr HTTP/1.0\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
$fp = fsockopen ('www.paypal.com', 80, $errno, $errstr, 30);
if (!$fp)
{
//an error occurred...
}
else
{
fputs ($fp, $header . $req);
while (!feof($fp))
{
$res = fgets ($fp, 1024);
if(strcmp ($res, "VERIFIED") == 0)
{
//all is well...
}
}
}
To enable IPN Verification Postback to HTTPS, change your code as follows,
$fp = fsockopen( 'tls://ipnpb.paypal.com', 443, $errno, $errstr, 30);
PayPal recommends to use ipnpb.paypal.com endpoint in production environment.
Also, you need to change HTTP/1.0 to HTTP/1.1 to comply with PayPal upgrades.
The Header you need to submit,
$header = "POST /cgi-bin/webscr HTTP/1.1\r\n";
$header .= "Host: www.paypal.com\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen( $req ) . "\r\n";
$header .= "Connection: close\r\n\r\n";
For the sandbox change,
$header .= "Host: www.paypal.com\r\n";
to
$header .= "Host: www.sandbox.paypal.com\r\n";
The new code suggested above has now had a chance to be tested.
This did NOT work:
// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';
foreach ($_POST as $key => $value)
{
$value = urlencode(stripslashes($value));
$req .= "&$key=$value";
}
// post back to PayPal system to validate
$header = "POST /cgi-bin/webscr HTTP/1.1\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
$fp = fsockopen( 'tls://ipnpb.paypal.com', 443, $errno, $errstr, 30);
This is what works:
// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';
foreach ($_POST as $key => $value)
{
$value = urlencode(stripslashes($value));
$req .= "&$key=$value";
}
// post back to PayPal system to validate
$header = "POST /cgi-bin/webscr HTTP/1.0\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
$fp = fsockopen ('www.paypal.com', 80, $errno, $errstr, 30);
What to do about using HTTP/1.0 and posting to www.paypal.com rather than using HTTP/1.1 and posting to tls://ipnpb.paypal.com?
There's a couple of things that need to be done:
You're still on HTTP/1.0; you need to switch to HTTP/1.1.
You need to switch to using TLS.
Most PHP setups nowadays should have cURL installed, so the easiest thing to do would be to use cURL. To do this, the last four lines of your code would change to the following:
$curl = curl_init( 'https://ipnpb.paypal.com/cgi-bin/webscr' );
curl_setopt( $curl, CURLOPT_RETURNTRANSFER, true );
curl_setopt( $curl, CURLOPT_POST, true );
curl_setopt( $curl, CURLOPT_POSTFIELDS, $req );
$response = curl_exec( $curl );
if( 'VERIFIED' == trim( $response ) ) {
// IPN verified by PayPal
}
I have a similiar issue with Paypal IPN verification and using this code
// post back to PayPal system to validate
// post back to PayPal system to validate
$header .= "POST /cgi-bin/webscr HTTP/1.0\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
$fp = fsockopen ('www.paypal.com', 80, $errno, $errstr, 30);
If I understand the solution correctly, the new code should look like
// post back to PayPal system to validate
$header .= "POST /cgi-bin/webscr HTTP/1.1\r\n";
$header .= "Host: ipnpb.paypal.com\r\n";
$header .= "Connection: close\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
$fp = fsockopen( 'tls://ipnpb.paypal.com', 443, $errno, $errstr, 30);
i have been working on a scraper tool that rips google search results and then crawls the results websites looking to match specific items.
I'm having an issue with cURL though. I have come accross a site that is causing curl to go into an infinite loop.
website in question.
http://www.darellyelectrical.com/
when i open up my packet sniffer and look through tcp http packets ive found the same request is being sent over and over again.
i can not pinpoint the reason why, I have no trouble with any other websites.
I have tried setting the following curl options
curl_setopt($this->sessions[$key], CURLOPT_TIMEOUT, $timeout);
curl_setopt($this->sessions[$key], CURLOPT_MAXREDIRS, 2);
curl_setopt($this->sessions[$key], CURLOPT_CONNECTTIMEOUT, 1);
be great if someone could test that url with curl and let me know if the issue persists.
thanks
EDIT**
function sck_send()
{
$host = "www.darellyelectrical.com";
$path = "";
$fp = fsockopen($host, 80, $errno, $errstr, 30);
if (!$fp) {
echo "$errstr ($errno)<br />\n";
} else {
$out = "GET /".$path." HTTP/1.1\r\n";
$out .= "Host: ".$host."\r\n";
$out .= "Connection: Close\r\n\r\n";
$data = "";
fwrite($fp, $out);
while (!feof($fp))
{
$data .= fgets($fp, 128);
}
fclose($fp);
echo $data;
}
}
sck_send();
this will produce the loop same as curl.
That server needs the User-Agent header to be included or it does not respond. PHP's curl doesn't set this by default and it wouldn't be included in a socket request unless you specify it. The code below works for me:
<?php
function sck_send() {
$host = "www.darellyelectrical.com";
$path = "";
$fp = fsockopen($host, 80, $errno, $errstr, 30);
if (!$fp) {
echo "$errstr ($errno)<br />\n";
} else {
$out = "GET /".$path." HTTP/1.1\r\n";
$out .= "Host: ".$host."\r\n";
$out .= "User-Agent: Mozilla/5.0 \r\n";
$out .= "Connection: Close\r\n\r\n";
$data = "";
fwrite($fp, $out);
while (!feof($fp)) {
$data .= fgets($fp, 128);
}
fclose($fp);
echo $data;
}
}
sck_send();
<?php
$host = 'www.yourtargeturl.com';
$service_uri = '/detect_referal.php';
$vars ='additional_option1=yes&additional_option2=un';
$header = "Host: $host\r\n";
$header .= "User-Agent: PHP Script\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Referer: http://www.google.com/search?hl=en&q=jigh&btnG=Google+Search \r\n";
$header .= "Content-Length: ".strlen($vars)."\r\n";
$header .= "Connection: close\r\n\r\n";
$fp = fsockopen("".$host,80, $errno, $errstr);
if (!$fp) {
echo "$errstr ($errno)<br/>\n";
echo $fp;
} else {
fputs($fp, "POST $service_uri HTTP/1.1\r\n");
fputs($fp, $header.$vars);
fwrite($fp, $out);
while (!feof($fp)) {
echo fgets($fp, 128);
}
fclose($fp);
}
?>
This is changing the $_SERVER['HTTP_REFERER']. How can I change $_SERVER['REMOTE_ADDR']. What code should I append in $header?
You can't do that. The IP address is determined at the beginning of the TCP connection, not in the HTTP headers. (It is possible to spoof [though not remotely like that], but then you won't get the response back.)
You can't. The IP address you connect out from isn't some header... it comes from the underlying TCP connection made from your server to the other server.