two HTTP requests in PHP using fsockopen - php

Question

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.