Пример клиента WebSocket на PHP

19.10.2016 Павел Грибов PHP

Если клиент на javascript для WebSocket это весьма простая вещь, то на PHP чуточку сложнее. Готовых примеров в сети раз-два и обчелся. Вот пример одной из реализаций:

$local = "http://грибовы.рф";		    
$data = "Скрипт обработки выбора фильтра абонентом";  
$key="woeudhцукацук цук пупркеркеуенakcslerug;er";

	$host=$row2["mysql_ip"];
	$port = 8000;
	$head = "GET / HTTP/1.1"."\r\n".
		"Upgrade: WebSocket"."\r\n".
		"Connection: Upgrade"."\r\n".
		"Origin: $local"."\r\n".
		"Host: $host"."\r\n".
		"Sec-WebSocket-Key: asd245345235d6asd6as7d"."\r\n".
		"Content-Length: ".strlen($data)."\r\n"."\r\n";
	
	$sock = fsockopen($host, $port, $errno, $errstr, 2);
	fwrite($sock, $head ) or die('error:'.$errno.':'.$errstr);
	$headers = fread($sock, 2000);
	//echo $headers;
	fwrite($sock, hybi10Encode($data)) or die('error:'.$errno.':'.$errstr);
	$wsdata = fread($sock, 2000);
	//var_dump(hybi10Decode($wsdata));
	//echo "--send\n";    
	    $mess["key"]=$key;
	    $mess["command"]="UpdateFilterContent";
	    fwrite($sock, hybi10Encode(json_encode($mess))) or die('error:'.$errno.':'.$errstr);
	//echo "--read\n";        
	$wsdata = fread($sock, 2000);
	//var_dump(hybi10Decode($wsdata));
	fclose($sock);

$local = "http://грибовы.рф";

$data = "Скрипт обработки выбора фильтра абонентом";

$key="woeudhцукацук цук пупркеркеуенakcslerug;er";

$host=$row2["mysql_ip"];

$port = 8000;

$head = "GET / HTTP/1.1"."\r\n".

"Upgrade: WebSocket"."\r\n".

"Connection: Upgrade"."\r\n".

"Origin: $local"."\r\n".

"Host: $host"."\r\n".

"Sec-WebSocket-Key: asd245345235d6asd6as7d"."\r\n".

"Content-Length: ".strlen($data)."\r\n"."\r\n";

$sock = fsockopen($host, $port, $errno, $errstr, 2);

fwrite($sock, $head ) or die('error:'.$errno.':'.$errstr);

$headers = fread($sock, 2000);

//echo $headers;

fwrite($sock, hybi10Encode($data)) or die('error:'.$errno.':'.$errstr);

$wsdata = fread($sock, 2000);

//var_dump(hybi10Decode($wsdata));

//echo "--send\n";

$mess["key"]=$key;

$mess["command"]="UpdateFilterContent";

fwrite($sock, hybi10Encode(json_encode($mess))) or die('error:'.$errno.':'.$errstr);

//echo "--read\n";

$wsdata = fread($sock, 2000);

//var_dump(hybi10Decode($wsdata));

fclose($sock);

Вспомогательные функции:

function hybi10Decode($data){
    $bytes = $data;
    $dataLength = '';
    $mask = '';
    $coded_data = '';
    $decodedData = '';
    $secondByte = sprintf('%08b', ord($bytes[1]));
    $masked = ($secondByte[0] == '1') ? true : false;
    $dataLength = ($masked === true) ? ord($bytes[1]) & 127 : ord($bytes[1]);

    if($masked === true)
    {
        if($dataLength === 126)
        {
           $mask = substr($bytes, 4, 4);
           $coded_data = substr($bytes, 8);
        }
        elseif($dataLength === 127)
        {
            $mask = substr($bytes, 10, 4);
            $coded_data = substr($bytes, 14);
        }
        else
        {
            $mask = substr($bytes, 2, 4);       
            $coded_data = substr($bytes, 6);        
        }   
        for($i = 0; $i < strlen($coded_data); $i++)
        {       
            $decodedData .= $coded_data[$i] ^ $mask[$i % 4];
        }
    }
    else
    {
        if($dataLength === 126)
        {          
           $decodedData = substr($bytes, 4);
        }
        elseif($dataLength === 127)
        {           
            $decodedData = substr($bytes, 10);
        }
        else
        {               
            $decodedData = substr($bytes, 2);       
        }       
    }   

    return $decodedData;
}


function hybi10Encode($payload, $type = 'text', $masked = true) {
    $frameHead = array();
    $frame = '';
    $payloadLength = strlen($payload);

    switch ($type) {
        case 'text':
            // first byte indicates FIN, Text-Frame (10000001):
            $frameHead[0] = 129;
            break;

        case 'close':
            // first byte indicates FIN, Close Frame(10001000):
            $frameHead[0] = 136;
            break;

        case 'ping':
            // first byte indicates FIN, Ping frame (10001001):
            $frameHead[0] = 137;
            break;

        case 'pong':
            // first byte indicates FIN, Pong frame (10001010):
            $frameHead[0] = 138;
            break;
    }

    // set mask and payload length (using 1, 3 or 9 bytes)
    if ($payloadLength > 65535) {
        $payloadLengthBin = str_split(sprintf('%064b', $payloadLength), 8);
        $frameHead[1] = ($masked === true) ? 255 : 127;
        for ($i = 0; $i < 8; $i++) {
            $frameHead[$i + 2] = bindec($payloadLengthBin[$i]);
        }

        // most significant bit MUST be 0 (close connection if frame too big)
        if ($frameHead[2] > 127) {
            $this->close(1004);
            return false;
        }
    } elseif ($payloadLength > 125) {
        $payloadLengthBin = str_split(sprintf('%016b', $payloadLength), 8);
        $frameHead[1] = ($masked === true) ? 254 : 126;
        $frameHead[2] = bindec($payloadLengthBin[0]);
        $frameHead[3] = bindec($payloadLengthBin[1]);
    } else {
        $frameHead[1] = ($masked === true) ? $payloadLength + 128 : $payloadLength;
    }

    // convert frame-head to string:
    foreach (array_keys($frameHead) as $i) {
        $frameHead[$i] = chr($frameHead[$i]);
    }

    if ($masked === true) {
        // generate a random mask:
        $mask = array();
        for ($i = 0; $i < 4; $i++) {
            $mask[$i] = chr(rand(0, 255));
        }

        $frameHead = array_merge($frameHead, $mask);
    }
    $frame = implode('', $frameHead);
    // append payload to frame:
    for ($i = 0; $i < $payloadLength; $i++) {
        $frame .= ($masked === true) ? $payload[$i] ^ $mask[$i % 4] : $payload[$i];
    }

    return $frame;
}

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function hybi10Decode($data){

$bytes = $data;

$dataLength = '';

$mask = '';

$coded_data = '';

$decodedData = '';

$secondByte = sprintf('%08b', ord($bytes[1]));

$masked = ($secondByte[0] == '1') ? true : false;

$dataLength = ($masked === true) ? ord($bytes[1]) & 127 : ord($bytes[1]);

if($masked === true)

{

if($dataLength === 126)

{

$mask = substr($bytes, 4, 4);

$coded_data = substr($bytes, 8);

}

elseif($dataLength === 127)

{

$mask = substr($bytes, 10, 4);

$coded_data = substr($bytes, 14);

}

else

{

$mask = substr($bytes, 2, 4);

$coded_data = substr($bytes, 6);

}

for($i = 0; $i < strlen($coded_data); $i++)

{

$decodedData .= $coded_data[$i] ^ $mask[$i % 4];

}

else

{

if($dataLength === 126)

{

$decodedData = substr($bytes, 4);

}

elseif($dataLength === 127)

{

$decodedData = substr($bytes, 10);

}

else

{

$decodedData = substr($bytes, 2);

}

return $decodedData;

}

function hybi10Encode($payload, $type = 'text', $masked = true) {

$frameHead = array();

$frame = '';

$payloadLength = strlen($payload);

switch ($type) {

case 'text':

// first byte indicates FIN, Text-Frame (10000001):

$frameHead[0] = 129;

break;

case 'close':

// first byte indicates FIN, Close Frame(10001000):

$frameHead[0] = 136;

break;

case 'ping':

// first byte indicates FIN, Ping frame (10001001):

$frameHead[0] = 137;

break;

case 'pong':

// first byte indicates FIN, Pong frame (10001010):

$frameHead[0] = 138;

break;

}

// set mask and payload length (using 1, 3 or 9 bytes)

if ($payloadLength > 65535) {

$payloadLengthBin = str_split(sprintf('%064b', $payloadLength), 8);

$frameHead[1] = ($masked === true) ? 255 : 127;

for ($i = 0; $i < 8; $i++) {

$frameHead[$i + 2] = bindec($payloadLengthBin[$i]);

}

// most significant bit MUST be 0 (close connection if frame too big)

if ($frameHead[2] > 127) {

$this->close(1004);

return false;

}

} elseif ($payloadLength > 125) {

$payloadLengthBin = str_split(sprintf('%016b', $payloadLength), 8);

$frameHead[1] = ($masked === true) ? 254 : 126;

$frameHead[2] = bindec($payloadLengthBin[0]);

$frameHead[3] = bindec($payloadLengthBin[1]);

} else {

$frameHead[1] = ($masked === true) ? $payloadLength + 128 : $payloadLength;

}

// convert frame-head to string:

foreach (array_keys($frameHead) as $i) {

$frameHead[$i] = chr($frameHead[$i]);

}

if ($masked === true) {

// generate a random mask:

$mask = array();

for ($i = 0; $i < 4; $i++) {

$mask[$i] = chr(rand(0, 255));

}

$frameHead = array_merge($frameHead, $mask);

}

$frame = implode('', $frameHead);

// append payload to frame:

for ($i = 0; $i < $payloadLength; $i++) {

$frame .= ($masked === true) ? $payload[$i] ^ $mask[$i % 4] : $payload[$i];

}

return $frame;

}

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Пример клиента WebSocket на PHP

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