純PHP 簡易(Server/Client)線上聊天室[websocket chat] 範例 – jashliao部落格

純PHP 簡易(Server/Client)線上聊天室[websocket chat] 範例

資料來源: https://github.com/sanwebe/Chat-Using-WebSocket-and-PHP-Socket

GITHUB: https://github.com/jash-git/PHP-websocket-chat

01.使用WINDOWS的USBWebserver_v8.6環境下測試可用

02.SERVER(server.php)

'system', 'message'=>$ip.' connected'))); //prepare json data
		send_message($response); //notify all users about new connection
		
		//make room for new socket
		$found_socket = array_search($socket, $changed);
		unset($changed[$found_socket]);
	}
	
	//loop through all connected sockets
	foreach ($changed as $changed_socket) {	
		
		//check for any incomming data
		while(socket_recv($changed_socket, $buf, 1024, 0) >= 1)
		{
			$received_text = unmask($buf); //unmask data
			$tst_msg = json_decode($received_text, true); //json decode 
			$user_name = $tst_msg['name']; //sender name
			$user_message = $tst_msg['message']; //message text
			$user_color = $tst_msg['color']; //color
			
			//prepare data to be sent to client
			$response_text = mask(json_encode(array('type'=>'usermsg', 'name'=>$user_name, 'message'=>$user_message, 'color'=>$user_color)));
			send_message($response_text); //send data
			break 2; //exist this loop
		}
		
		$buf = @socket_read($changed_socket, 1024, PHP_NORMAL_READ);
		if ($buf === false) { // check disconnected client
			// remove client for $clients array
			$found_socket = array_search($changed_socket, $clients);
			socket_getpeername($changed_socket, $ip);
			unset($clients[$found_socket]);
			
			//notify all users about disconnected connection
			$response = mask(json_encode(array('type'=>'system', 'message'=>$ip.' disconnected')));
			send_message($response);
		}
	}
}
// close the listening socket
socket_close($socket);

function send_message($msg)
{
	global $clients;
	foreach($clients as $changed_socket)
	{
		@socket_write($changed_socket,$msg,strlen($msg));
	}
	return true;
}


//Unmask incoming framed message
function unmask($text) {
	$length = ord($text[1]) & 127;
	if($length == 126) {
		$masks = substr($text, 4, 4);
		$data = substr($text, 8);
	}
	elseif($length == 127) {
		$masks = substr($text, 10, 4);
		$data = substr($text, 14);
	}
	else {
		$masks = substr($text, 2, 4);
		$data = substr($text, 6);
	}
	$text = "";
	for ($i = 0; $i < strlen($data); ++$i) {
		$text .= $data[$i] ^ $masks[$i%4];
	}
	return $text;
}

//Encode message for transfer to client.
function mask($text)
{
	$b1 = 0x80 | (0x1 & 0x0f);
	$length = strlen($text);
	
	if($length <= 125)
		$header = pack('CC', $b1, $length);
	elseif($length > 125 && $length < 65536)
		$header = pack('CCn', $b1, 126, $length);
	elseif($length >= 65536)
		$header = pack('CCNN', $b1, 127, $length);
	return $header.$text;
}

//handshake new client.
function perform_handshaking($receved_header,$client_conn, $host, $port)
{
	$headers = array();
	$lines = preg_split("/\r\n/", $receved_header);
	foreach($lines as $line)
	{
		$line = chop($line);
		if(preg_match('/\A(\S+): (.*)\z/', $line, $matches))
		{
			$headers[$matches[1]] = $matches[2];
		}
	}

	$secKey = $headers['Sec-WebSocket-Key'];
	$secAccept = base64_encode(pack('H*', sha1($secKey . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')));
	//hand shaking header
	$upgrade  = "HTTP/1.1 101 Web Socket Protocol Handshake\r\n" .
	"Upgrade: websocket\r\n" .
	"Connection: Upgrade\r\n" .
	"WebSocket-Origin: $host\r\n" .
	"WebSocket-Location: ws://$host:$port/demo/shout.php\r\n".
	"Sec-WebSocket-Accept:$secAccept\r\n\r\n";
	socket_write($client_conn,$upgrade,strlen($upgrade));
}

03.CLIENT(index.php)

Send

04.Winondows_USBWebserver啟動SERVER.bat

..\..\php\php.exe server.php

05.執行步驟:
    01.Winondows_USBWebserver啟動SERVER.bat
    02.開啟瀏覽器執行index.php * N次