客户端:
服务器端server.php
<?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 = true;
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){
global $sockets,$users;
$action = unwrap($msg);
say(“< “.$action);
if(!$user->init){
$user->user=$action;
send($user->socket,”hello “.$user->user);
send($user->socket,”You can Chat Now!”);
$user->init=true;
return;
}
foreach($users as $otherUser){
send($otherUser->socket,$user->user.”:”.$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,$data) = getheaders($buffer);
console(“Handshaking…”);
$pattern = ‘/[^\d]*/’;
$replacement = ”;
$numkey1 = preg_replace($pattern, $replacement, $strkey1);
$numkey2 = preg_replace($pattern, $replacement, $strkey2);
$pattern = ‘/[^ ]*/’;
$replacement = ”;
$spaces1 = strlen(preg_replace($pattern, $replacement, $strkey1));
$spaces2 = strlen(preg_replace($pattern, $replacement, $strkey2));
/*
if ($spaces1 == 0 || $spaces2 == 0 || $numkey1 % $spaces1 != 0 || $numkey2 % $spaces2 != 0) {
//socket_close($user->socket);
console(‘failed’);
return false;
}
*/
$ctx = hash_init(‘md5′);
hash_update($ctx, pack(“N”, $numkey1/$spaces1));
hash_update($ctx, pack(“N”, $numkey2/$spaces2));
hash_update($ctx, $data);
$hash_data = hash_final($ctx,true);
$upgrade = “HTTP/1.1 101 WebSocket Protocol Handshake\r\n” .
“Upgrade: WebSocket\r\n” .
“Connection: Upgrade\r\n” .
“Sec-WebSocket-Origin: ” . $origin . “\r\n” .
“Sec-WebSocket-Location: ws://” . $host . $resource . “\r\n” .
“\r\n” .
$hash_data;
socket_write($user->socket,$upgrade.chr(0),strlen($upgrade.chr(0)));
$user->handshake=true;
console($upgrade);
console(“Done handshaking…”);
sendHello($user);
return true;
}
function sendHello($user){
send($user->socket,”hello!”);
send($user->socket,”Welcome to ChatRoom”);
send($user->socket,”Please Enter Your NickName!”);
$user->init=false;
}
function getheaders($req){
$r=$h=$o=null;
if(preg_match(“/GET (.*) HTTP/” ,$req,$match)){ $r=$match[1]; }
if(preg_match(“/Host: (.*)\r\n/” ,$req,$match)){ $h=$match[1]; }
if(preg_match(“/Origin: (.*)\r\n/”,$req,$match)){ $o=$match[1]; }
if(preg_match(“/Sec-WebSocket-Key2: (.*)\r\n/”,$req,$match)){ $key2=$match[1]; }
if(preg_match(“/Sec-WebSocket-Key1: (.*)\r\n/”,$req,$match)){ $key1=$match[1]; }
if(preg_match(“/\r\n(.*?)\$/”,$req,$match)){ $data=$match[1]; }
return array($r,$h,$o,$key1,$key2,$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;
var $user;
var $init;
}
?>
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