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PHP客户端Web socket发送消息

转载 作者：可可西里 更新时间：2023-11-01 02:31:39 25 4
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我有以下代码

index.php

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style type="text/css">

.panel{


margin-right: 3px;
}

.button {
    background-color: #4CAF50;
    border: none;
    color: white;
    margin-right: 30%;   
    margin-left: 30%;
    text-decoration: none;
    display: block;
    font-size: 16px;
    cursor: pointer;
    width:30%;
    height:40px;
    margin-top: 5px;

}
input[type=text]{
        width:100%;
        margin-top:5px;

    }


.chat_wrapper {
    width: 70%;
    height:472px;
    margin-right: auto;
    margin-left: auto;
    background: #3B5998;
    border: 1px solid #999999;
    padding: 10px;
    font: 14px 'lucida grande',tahoma,verdana,arial,sans-serif;
}
.chat_wrapper .message_box {
    background: #F7F7F7;
    height:350px;
        overflow: auto;
    padding: 10px 10px 20px 10px;
    border: 1px solid #999999;
}
.chat_wrapper  input{
    //padding: 2px 2px 2px 5px;
}
.system_msg{color: #BDBDBD;font-style: italic;}
.user_name{font-weight:bold;}
.user_message{color: #88B6E0;}

@media only screen and (max-width: 720px) {
    /* For mobile phones: */
    .chat_wrapper {
        width: 95%;
    height: 40%;
    }


    .button{ width:100%;
    margin-right:auto;   
    margin-left:auto;
    height:40px;}






}

</style>
</head>
<body>  
<?php 
$colours = array('007AFF','FF7000','FF7000','15E25F','CFC700','CFC700','CF1100','CF00BE','F00');
$user_colour = array_rand($colours);
?>


<script src="jquery-3.1.1.js"></script>


<script language="javascript" type="text/javascript">  
$(document).ready(function(){
    //create a new WebSocket object.
    var wsUri = "ws://localhost:9000/demo/server.php";  
    websocket = new WebSocket(wsUri); 

    websocket.onopen = function(ev) { // connection is open 
        $('#message_box').append("<div class=\"system_msg\">Connected!</div>"); //notify user
    }

    $('#send-btn').click(function(){ //use clicks message send button   
        var mymessage = $('#message').val(); //get message text
        var myname = $('#name').val(); //get user name

        if(myname == ""){ //empty name?
            alert("Enter your Name please!");
            return;
        }
        if(mymessage == ""){ //emtpy message?
            alert("Enter Some message Please!");
            return;
        }
        document.getElementById("name").style.visibility = "hidden";

        var objDiv = document.getElementById("message_box");
        objDiv.scrollTop = objDiv.scrollHeight;
        //prepare json data
        var msg = {
        message: mymessage,
        name: myname,
        color : '<?php echo $colours[$user_colour]; ?>'
        };
        //convert and send data to server
        websocket.send(JSON.stringify(msg));
    });

    //#### Message received from server?
    websocket.onmessage = function(ev) {
        var msg = JSON.parse(ev.data); //PHP sends Json data
        var type = msg.type; //message type
        var umsg = msg.message; //message text
        var uname = msg.name; //user name
        var ucolor = msg.color; //color

        if(type == 'usermsg') 
        {
            $('#message_box').append("<div><span class=\"user_name\" style=\"color:#"+ucolor+"\">"+uname+"</span> : <span class=\"user_message\">"+umsg+"</span></div>");
        }
        if(type == 'system')
        {
            $('#message_box').append("<div class=\"system_msg\">"+umsg+"</div>");
        }

        $('#message').val(''); //reset text

        var objDiv = document.getElementById("message_box");
        objDiv.scrollTop = objDiv.scrollHeight;
    };

    websocket.onerror   = function(ev){$('#message_box').append("<div class=\"system_error\">Error Occurred - "+ev.data+"</div>");}; 
    websocket.onclose   = function(ev){$('#message_box').append("<div class=\"system_msg\">Connection Closed</div>");}; 
});




</script>
<div class="chat_wrapper">
<div class="message_box" id="message_box"></div>
<div class="panel">
<input type="text" name="name" id="name" placeholder="Your Name" maxlength="15" />

<input type="text" name="message" id="message" placeholder="Message" maxlength="80" 
onkeydown = "if (event.keyCode == 13)document.getElementById('send-btn').click()"  />





</div>

<button id="send-btn" class=button>Send</button>

</div>

</body>
</html>

server.php

<?php
$host = 'localhost'; //host
$port = '9000'; //port
$null = NULL; //null var

//Create TCP/IP sream socket
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
//reuseable port
socket_set_option($socket, SOL_SOCKET, SO_REUSEADDR, 1);

//bind socket to specified host
socket_bind($socket, 0, $port);

//listen to port
socket_listen($socket);

//create & add listning socket to the list
$clients = array($socket);

//start endless loop, so that our script doesn't stop
while (true) {
    //manage multipal connections
    $changed = $clients;
    //returns the socket resources in $changed array
    socket_select($changed, $null, $null, 0, 10);

    //check for new socket
    if (in_array($socket, $changed)) {
        $socket_new = socket_accept($socket); //accpet new socket
        $clients[] = $socket_new; //add socket to client array

        $header = socket_read($socket_new, 1024); //read data sent by the socket
        perform_handshaking($header, $socket_new, $host, $port); //perform websocket handshake

        socket_getpeername($socket_new, $ip); //get ip address of connected socket
        $response = mask(json_encode(array('type'=>'system', 'message'=>$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); //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));
}

上面的代码工作正常。但是现在我正在寻找作为 php 的客户端。可以提供一些示例来使用 php 制作客户端 websocket

更新

我需要通过 websocket 使用 php 或 javascript 库发送字节数组

更新 2我找到了简单的 websocket 类，但不知道如何使用

https://github.com/paragi/PHP-websocket-client/blob/master/websocket_client.php

另外，根据 Niket Pathak 的回答，我尝试了但出现以下错误

<?php
$host = 'ws://echo.websocket.org';  // your websocket server
$port = 80;
$local = "http://localhost";  // url where this script run | Client
$data = '{"id": 2,"command": "server_info"}';  // data to be sent

$head = "GET / HTTP/1.1"."\r\n".
        "Upgrade: WebSocket"."\r\n".
        "Connection: Upgrade"."\r\n".
        "Origin: $local"."\r\n".
        "Host: $host"."\r\n".
        "Sec-WebSocket-Version: 13"."\r\n".
        "Sec-WebSocket-Key: asdasdaas76da7sd6asd6as7d"."\r\n".
        "Content-Length: ".strlen($data)."\r\n"."\r\n";
// WebSocket handshake
$sock = fsockopen($host, $port, $errno, $errstr, 2);
fwrite($sock, $head ) or die('error:'.$errno.':'.$errstr);
$headers = fread($sock, 2000);
fwrite($sock, hybi10Encode($data)) or die('error:'.$errno.':'.$errstr);
$wsdata = fread($sock, 2000);
fclose($sock);

var_dump(hybi10Decode($wsdata));

// hibi10 decoding of data
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;
}

// hibi10 encoding of data
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;
}

错误

Warning: fsockopen(): unable to connect to ws://echo.websocket.org:80 (Unable to find the socket transport "ws" - did you forget to enable it when you configured PHP?) in G:\XAMPP\htdocs\a\server.php on line 16

Warning: fwrite() expects parameter 1 to be resource, boolean given in G:\XAMPP\htdocs\a\server.php on line 17 error:407024:Unable to find the socket transport "ws" - did you forget to enable it when you configured PHP?

最佳答案

如果您正在谈论使用 Php 连接到您的 Websocket，那么是，这是可行的。有一些库，例如 Php WebSocket client或 Websocket php可以作为客户端连接到您的 websocket。

您还可以查看此 Websocket Client举个例子。

另一个工作示例，未使用任何库并根据 specification 实现 hybi10 帧编码 :

$host = 'www.host.com';  // your websocket server
$port = 443;
$local = "http://localhost";  // url where this script runs | Client
$data = '{"id": 2,"command": "server_info"}';  // data to be sent

$head = "GET / HTTP/1.1"."\r\n".
        "Upgrade: WebSocket"."\r\n".
        "Connection: Upgrade"."\r\n".
        "Origin: $local"."\r\n".
        "Host: $host"."\r\n".
        "Sec-WebSocket-Version: 13"."\r\n".
        "Sec-WebSocket-Key: asdasdaas76da7sd6asd6as7d"."\r\n".
        "Content-Length: ".strlen($data)."\r\n"."\r\n";
// WebSocket handshake
$sock = fsockopen($host, $port, $errno, $errstr, 2);
fwrite($sock, $head ) or die('error:'.$errno.':'.$errstr);
$headers = fread($sock, 2000);
fwrite($sock, hybi10Encode($data)) or die('error:'.$errno.':'.$errstr);
$wsdata = fread($sock, 2000);
fclose($sock);

var_dump(hybi10Decode($wsdata));

// hibi10 decoding of data
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;
}

// hibi10 encoding of data
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;
}

最后，您可以先将字节数据编码为 base64，将其作为 JSON 对象发送。检查这个SO Post看看如何做到这一点。希望这会有所帮助。

关于PHP客户端Web socket发送消息，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42955033/

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