Cette fois, je vais vous donner une explication détaillée des étapes pour implémenter le push de messages en temps réel websocket en PHP. Quelles sont les précautions pour implémenter le push de messages en temps réel websocket en PHP. cas pratique, jetons un coup d'oeil.
php implémente le push de messages en temps réel websocket pour votre référence. Le contenu spécifique est le suivant
SocketService.php
<?php /** * Created by xwx * Date: 2017/10/18 * Time: 14:33 */ class SocketService { private $address = '0.0.0.0'; private $port = 8083; private $_sockets; public function construct($address = '', $port='') { if(!empty($address)){ $this->address = $address; } if(!empty($port)) { $this->port = $port; } } public function service(){ //获取tcp协议号码。 $tcp = getprotobyname("tcp"); $sock = socket_create(AF_INET, SOCK_STREAM, $tcp); socket_set_option($sock, SOL_SOCKET, SO_REUSEADDR, 1); if($sock < 0) { throw new Exception("failed to create socket: ".socket_strerror($sock)."\n"); } socket_bind($sock, $this->address, $this->port); socket_listen($sock, $this->port); echo "listen on $this->address $this->port ... \n"; $this->_sockets = $sock; } public function run(){ $this->service(); $clients[] = $this->_sockets; while (true){ $changes = $clients; $write = NULL; $except = NULL; socket_select($changes, $write, $except, NULL); foreach ($changes as $key => $_sock){ if($this->_sockets == $_sock){ //判断是不是新接入的socket if(($newClient = socket_accept($_sock)) === false){ die('failed to accept socket: '.socket_strerror($_sock)."\n"); } $line = trim(socket_read($newClient, 1024)); $this->handshaking($newClient, $line); //获取client ip socket_getpeername ($newClient, $ip); $clients[$ip] = $newClient; echo "Client ip:{$ip} \n"; echo "Client msg:{$line} \n"; } else { socket_recv($_sock, $buffer, 2048, 0); $msg = $this->message($buffer); //在这里业务代码 echo "{$key} clinet msg:",$msg,"\n"; fwrite(STDOUT, 'Please input a argument:'); $response = trim(fgets(STDIN)); $this->send($_sock, $response); echo "{$key} response to Client:".$response,"\n"; } } } } /** * 握手处理 * @param $newClient socket * @return int 接收到的信息 */ public function handshaking($newClient, $line){ $headers = array(); $lines = preg_split("/\r\n/", $line); foreach($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'))); $upgrade = "HTTP/1.1 101 Web Socket Protocol Handshake\r\n" . "Upgrade: websocket\r\n" . "Connection: Upgrade\r\n" . "WebSocket-Origin: $this->address\r\n" . "WebSocket-Location: ws://$this->address:$this->port/websocket/websocket\r\n". "Sec-WebSocket-Accept:$secAccept\r\n\r\n"; return socket_write($newClient, $upgrade, strlen($upgrade)); } /** * 解析接收数据 * @param $buffer * @return null|string */ public function message($buffer){ $len = $masks = $data = $decoded = null; $len = ord($buffer[1]) & 127; if ($len === 126) { $masks = substr($buffer, 4, 4); $data = substr($buffer, 8); } else if ($len === 127) { $masks = substr($buffer, 10, 4); $data = substr($buffer, 14); } else { $masks = substr($buffer, 2, 4); $data = substr($buffer, 6); } for ($index = 0; $index < strlen($data); $index++) { $decoded .= $data[$index] ^ $masks[$index % 4]; } return $decoded; } /** * 发送数据 * @param $newClinet 新接入的socket * @param $msg 要发送的数据 * @return int|string */ public function send($newClinet, $msg){ $msg = $this->frame($msg); socket_write($newClinet, $msg, strlen($msg)); } public function frame($s) { $a = str_split($s, 125); if (count($a) == 1) { return "\x81" . chr(strlen($a[0])) . $a[0]; } $ns = ""; foreach ($a as $o) { $ns .= "\x81" . chr(strlen($o)) . $o; } return $ns; } /** * 关闭socket */ public function close(){ return socket_close($this->_sockets); } } $sock = new SocketService(); $sock->run();
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width,initial-scale=1, maximum-scale=1, user-scalable=no"> <title>websocket</title> </head> <body> <input id="text" value=""> <input type="submit" value="send" onclick="start()"> <input type="submit" value="close" onclick="close()"> <p id="msg"></p> <script> /** 0:未连接 1:连接成功,可通讯 2:正在关闭 3:连接已关闭或无法打开 */ //创建一个webSocket 实例 var webSocket = new WebSocket("ws://192.168.31.152:8083"); webSocket.onerror = function (event){ onError(event); }; // 打开websocket webSocket.onopen = function (event){ onOpen(event); }; //监听消息 webSocket.onmessage = function (event){ onMessage(event); }; webSocket.onclose = function (event){ onClose(event); } //关闭监听websocket function onError(event){ document.getElementById("msg").innerHTML = "<p>close</p>"; console.log("error"+event.data); }; function onOpen(event){ console.log("open:"+sockState()); document.getElementById("msg").innerHTML = "<p>Connect to Service</p>"; }; function onMessage(event){ console.log("onMessage"); document.getElementById("msg").innerHTML += "<p>response:"+event.data+"</p>" }; function onClose(event){ document.getElementById("msg").innerHTML = "<p>close</p>"; console.log("close:"+sockState()); webSocket.close(); } function sockState(){ var status = ['未连接','连接成功,可通讯','正在关闭','连接已关闭或无法打开']; return status[webSocket.readyState]; } function start(event){ console.log(webSocket); var msg = document.getElementById('text').value; document.getElementById('text').value = ''; console.log("send:"+sockState()); console.log("msg="+msg); webSocket.send("msg="+msg); document.getElementById("msg").innerHTML += "<p>request"+msg+"</p>" }; function close(event){ webSocket.close(); } </script> </body> </html>
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