क्या कोई ट्यूटोरियल या गाइड हैं जो दिखाते हैं कि कैसे अपने आप को PHP में एक साधारण वेबसोकेट सर्वर लिखना है? मैंने इसे Google पर ढूंढने की कोशिश की है, लेकिन मुझे कई नहीं मिले। मुझे phpwebsockets मिला लेकिन यह अभी पुराना है और नवीनतम प्रोटोकॉल का समर्थन नहीं करता है। मैंने इसे स्वयं अपडेट करने की कोशिश की, लेकिन यह काम नहीं करता है।
#!/php -q
<?php /* >php -q server.php */
error_reporting(E_ALL);
set_time_limit(0);
ob_implicit_flush();
$master = WebSocket("localhost",12345);
$sockets = array($master);
$users = array();
$debug = false;
while(true){
$changed = $sockets;
socket_select($changed,$write=NULL,$except=NULL,NULL);
foreach($changed as $socket){
if($socket==$master){
$client=socket_accept($master);
if($client<0){ console("socket_accept() failed"); continue; }
else{ connect($client); }
}
else{
$bytes = @socket_recv($socket,$buffer,2048,0);
if($bytes==0){ disconnect($socket); }
else{
$user = getuserbysocket($socket);
if(!$user->handshake){ dohandshake($user,$buffer); }
else{ process($user,$buffer); }
}
}
}
}
//---------------------------------------------------------------
function process($user,$msg){
$action = unwrap($msg);
say("< ".$action);
switch($action){
case "hello" : send($user->socket,"hello human"); break;
case "hi" : send($user->socket,"zup human"); break;
case "name" : send($user->socket,"my name is Multivac, silly I know"); break;
case "age" : send($user->socket,"I am older than time itself"); break;
case "date" : send($user->socket,"today is ".date("Y.m.d")); break;
case "time" : send($user->socket,"server time is ".date("H:i:s")); break;
case "thanks": send($user->socket,"you're welcome"); break;
case "bye" : send($user->socket,"bye"); break;
default : send($user->socket,$action." not understood"); break;
}
}
function send($client,$msg){
say("> ".$msg);
$msg = wrap($msg);
socket_write($client,$msg,strlen($msg));
}
function WebSocket($address,$port){
$master=socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("socket_create() failed");
socket_set_option($master, SOL_SOCKET, SO_REUSEADDR, 1) or die("socket_option() failed");
socket_bind($master, $address, $port) or die("socket_bind() failed");
socket_listen($master,20) or die("socket_listen() failed");
echo "Server Started : ".date('Y-m-d H:i:s')."\n";
echo "Master socket : ".$master."\n";
echo "Listening on : ".$address." port ".$port."\n\n";
return $master;
}
function connect($socket){
global $sockets,$users;
$user = new User();
$user->id = uniqid();
$user->socket = $socket;
array_push($users,$user);
array_push($sockets,$socket);
console($socket." CONNECTED!");
}
function disconnect($socket){
global $sockets,$users;
$found=null;
$n=count($users);
for($i=0;$i<$n;$i++){
if($users[$i]->socket==$socket){ $found=$i; break; }
}
if(!is_null($found)){ array_splice($users,$found,1); }
$index = array_search($socket,$sockets);
socket_close($socket);
console($socket." DISCONNECTED!");
if($index>=0){ array_splice($sockets,$index,1); }
}
function dohandshake($user,$buffer){
console("\nRequesting handshake...");
console($buffer);
//list($resource,$host,$origin,$strkey1,$strkey2,$data)
list($resource,$host,$u,$c,$key,$protocol,$version,$origin,$data) = getheaders($buffer);
console("Handshaking...");
$acceptkey = base64_encode(sha1($key . "258EAFA5-E914-47DA-95CA-C5AB0DC85B11",true));
$upgrade = "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: $acceptkey\r\n";
socket_write($user->socket,$upgrade,strlen($upgrade));
$user->handshake=true;
console($upgrade);
console("Done handshaking...");
return true;
}
function getheaders($req){
$r=$h=$u=$c=$key=$protocol=$version=$o=$data=null;
if(preg_match("/GET (.*) HTTP/" ,$req,$match)){ $r=$match[1]; }
if(preg_match("/Host: (.*)\r\n/" ,$req,$match)){ $h=$match[1]; }
if(preg_match("/Upgrade: (.*)\r\n/",$req,$match)){ $u=$match[1]; }
if(preg_match("/Connection: (.*)\r\n/",$req,$match)){ $c=$match[1]; }
if(preg_match("/Sec-WebSocket-Key: (.*)\r\n/",$req,$match)){ $key=$match[1]; }
if(preg_match("/Sec-WebSocket-Protocol: (.*)\r\n/",$req,$match)){ $protocol=$match[1]; }
if(preg_match("/Sec-WebSocket-Version: (.*)\r\n/",$req,$match)){ $version=$match[1]; }
if(preg_match("/Origin: (.*)\r\n/",$req,$match)){ $o=$match[1]; }
if(preg_match("/\r\n(.*?)\$/",$req,$match)){ $data=$match[1]; }
return array($r,$h,$u,$c,$key,$protocol,$version,$o,$data);
}
function getuserbysocket($socket){
global $users;
$found=null;
foreach($users as $user){
if($user->socket==$socket){ $found=$user; break; }
}
return $found;
}
function say($msg=""){ echo $msg."\n"; }
function wrap($msg=""){ return chr(0).$msg.chr(255); }
function unwrap($msg=""){ return substr($msg,1,strlen($msg)-2); }
function console($msg=""){ global $debug; if($debug){ echo $msg."\n"; } }
class User{
var $id;
var $socket;
var $handshake;
}
?>
और ग्राहक:
var connection = new WebSocket('ws://localhost:12345');
connection.onopen = function () {
connection.send('Ping'); // Send the message 'Ping' to the server
};
// Log errors
connection.onerror = function (error) {
console.log('WebSocket Error ' + error);
};
// Log messages from the server
connection.onmessage = function (e) {
console.log('Server: ' + e.data);
};
अगर मेरे कोड में कुछ भी गलत है तो क्या आप मुझे इसे ठीक करने में मदद कर सकते हैं? फ़ायरफ़ॉक्स में Concole कहते हैंFirefox can't establish a connection to the server at ws://localhost:12345/.
EDIT
चूंकि इस सवाल में बहुत रुचि है, मैंने आपको वही प्रदान करने का फैसला किया जो मैं आखिर में आया था। यहाँ मेरा पूरा कोड है।