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I have a running chat application in my website. It is implemented using websockets, php and is working fine. The problem is whenever i send a message to single user it broadcasts that message to all users currently connected to my website. It will be really helpful if someone can tell me how to get the unique id of each user when someone connects to our app. If i can get the userid of the current logged in chat user that would solve my problem but i am unable to retrieve that userid when the user connects (open state of websocket). I can get the userid when the connection is made but I need the userid before the connection happens. When the connecation occurs it assigns its own ids to the connected users in a serial manner(1,2,3..,n).

<?php
// prevent the server from timing out
set_time_limit(0);

// include the web sockets server script (the server is started at the far bottom of this file)
require 'class.PHPWebSocket.php';

// when a client sends data to the server
function wsOnMessage($clientID, $message, $messageLength, $binary) {
global $Server;
$ip = long2ip( $Server->wsClients[$clientID][6] );

// check if message length is 0
if ($messageLength == 0) {
    $Server->wsClose($clientID);
    return;
}

//Send the message to everyone but the person who said it
foreach ( $Server->wsClients as $id => $client )
    if ( $id != $clientID )
        $Server->wsSend($id, "Visitor $clientID ($ip) said "$message"");
}

// when a client connects
function wsOnOpen($clientID)
{
global $Server;
$ip = long2ip( $Server->wsClients[$clientID][6] );

$Server->log( "$ip ($clientID) has connected." );

//Send a join notice to everyone but the person who joined
foreach ( $Server->wsClients as $id => $client )
    if ( $id != $clientID )
        $Server->wsSend($id, "Visitor $clientID ($ip) has joined the room.");
}

// when a client closes or lost connection
function wsOnClose($clientID, $status) {
global $Server;
$ip = long2ip( $Server->wsClients[$clientID][6] );

$Server->log( "$ip ($clientID) has disconnected." );

//Send a user left notice to everyone in the room
foreach ( $Server->wsClients as $id => $client )
    $Server->wsSend($id, "Visitor $clientID ($ip) has left the room.");
}

// start the server
$Server = new PHPWebSocket();
$Server->bind('message', 'wsOnMessage');
$Server->bind('open', 'wsOnOpen');
$Server->bind('close', 'wsOnClose');
// for other computers to connect, you will probably need to change this to your LAN IP or external IP,
// alternatively use: gethostbyaddr(gethostbyname($_SERVER['SERVER_NAME']))
$Server->wsStartServer('127.0.0.1', 9300);

?>

HTML

<!doctype html>
<html>
<head>
<meta charset='UTF-8' />
<style>
    input, textarea {border:1px solid #CCC;margin:0px;padding:0px}

    #body {max-width:800px;margin:auto}
    #log {width:100%;height:400px}
    #message {width:100%;line-height:20px}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script src="fancywebsocket.js"></script>
<script>
    var Server;

    function log( text ) {
        $log = $('#log');
        //Add text to log
        $log.append(($log.val()?"n":'')+text);
        //Autoscroll
        $log[0].scrollTop = $log[0].scrollHeight - $log[0].clientHeight;
    }

    function send( text ) {
        Server.send( 'message', text );
    }

    $(document).ready(function() {
        log('Connecting...');
        Server = new FancyWebSocket('ws://127.0.0.1:9300');

        $('#message').keypress(function(e) {
            if ( e.keyCode == 13 && this.value ) {
                log( 'You: ' + this.value );
                send( this.value );
                $(this).val('');
            }
        });

        //Let the user know we're connected
        Server.bind('open', function() {
            log( "Connected." );
        });

        //OH NOES! Disconnection occurred.
        Server.bind('close', function( data ) {
            log( "Disconnected." );
        });

        //Log any messages sent from server
        Server.bind('message', function( payload ) {
            log( payload );
        });

        Server.connect();
    });
</script>
</head>

<body>
<div id='body'>
    <textarea id='log' name='log' readonly='readonly'></textarea><br/>
    <input type='text' id='message' name='message' />
</div>
</body>

</html>
4

1 回答 1

2

  1. 在服务器中创建一个temp_users数组。

  2. 当每个客户端连接时，创建一个唯一 ID 并将新套接字和唯一 ID 添加到此数组中，然后将 ID 发送给客户端，并带有一个标头指示这是系统消息。

  3. 在客户端代码中，让客户端从系统消息中检索唯一 ID。使用唯一 ID 和客户端的用户名编写消息，然后将其发送回服务器。

  4. 将接收到的用户名映射到temp_users数组中对应的 ID。您现在可以识别特定用户并使用映射到其用户名的套接字向他们发送消息。

于 2013-12-16T12:14:56.783 回答