Unable to connect to php socket(err_connection_refused) - php

Question

Last time I've been recreating websocket protocol on my server. But recently when I connected to my server there was an error -err_connection_refused. I started analyzing packets that browser sends. I started with websocket, unfortunately there weren't any packets(sent to the server). Then I went a little bit lower to the http protocol and there weren't any captured packets too!!! Then I decided to check tcp protocol and noticed that there actually were a few packets, but server somehow didn't respond to them. Here's my php socket code:
function go(){
echo "GO() ... <br />\r\n";
echo "socket_create ...";
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if($socket < 0){
echo "Error: ".socket_strerror(socket_last_error())."<br />\r\n";
exit();
} else {
echo "OK <br />\r\n";
}
echo "socket_bind ...";
$bind = socket_bind($socket, '54.37.233.12', 9080); if($bind < 0){
echo "Error: ".socket_strerror(socket_last_error())."<br />\r\n";
exit();
}else{
echo "OK <br />\r\n";
}
socket_set_option($socket, SOL_SOCKET, SO_REUSEADDR, 1);
echo "Listening socket... ";
$listen = socket_listen($socket, 100);
if($listen < 0){
echo "Error: ".socket_strerror(socket_last_error())."<br />\r\n";
exit();
}else{
echo "OK <br />\r\n";
}
$socket_arr = array();
socket_set_nonblock($socket);
while(true){
$accept = #socket_accept($socket);
if($accept != false){
echo "OK <br />\r\n";
echo "Client \"".$accept."\" has connected<br />\r\n";
$res = array("socket" => $accept, "handshake" => false);
array_push($socket_arr, $res);
Some code below(that you don't need)...
}
}
}
error_reporting(E_ALL);
set_time_limit(0);
ob_implicit_flush();
ignore_user_abort(true);
$socket = go();
P.S There were no errors in console and all ports are already opened