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php实现websocket实时消息推送
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admin
时间:
2018-10-27 12:37
标题:
php实现websocket实时消息推送
php实现websocket实时消息推送
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SocketService.php
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<?php
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/**
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* Created by xwx
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* Date: 2017/10/18
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* Time: 14:33
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*/
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class SocketService
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{
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private $address = '0.0.0.0';
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private $port = 8083;
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private $_sockets;
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public function __construct($address = '', $port='')
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{
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if(!empty($address)){
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$this->address = $address;
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}
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if(!empty($port)) {
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$this->port = $port;
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}
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}
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public function service(){
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//获取tcp协议号码。
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$tcp = getprotobyname("tcp");
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$sock = socket_create(AF_INET, SOCK_STREAM, $tcp);
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socket_set_option($sock, SOL_SOCKET, SO_REUSEADDR, 1);
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if($sock < 0)
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{
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throw new Exception("failed to create socket: ".socket_strerror($sock)."\n");
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}
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socket_bind($sock, $this->address, $this->port);
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socket_listen($sock, $this->port);
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echo "listen on $this->address $this->port ... \n";
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$this->_sockets = $sock;
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}
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public function run(){
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$this->service();
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$clients[] = $this->_sockets;
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while (true){
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$changes = $clients;
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$write = NULL;
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$except = NULL;
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socket_select($changes, $write, $except, NULL);
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foreach ($changes as $key => $_sock){
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if($this->_sockets == $_sock){ //判断是不是新接入的socket
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if(($newClient = socket_accept($_sock)) === false){
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die('failed to accept socket: '.socket_strerror($_sock)."\n");
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}
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$line = trim(socket_read($newClient, 1024));
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$this->handshaking($newClient, $line);
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//获取client ip
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socket_getpeername ($newClient, $ip);
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$clients[$ip] = $newClient;
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echo "Client ip:{$ip} \n";
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echo "Client msg:{$line} \n";
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} else {
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socket_recv($_sock, $buffer, 2048, 0);
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$msg = $this->message($buffer);
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//在这里业务代码
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echo "{$key} clinet msg:",$msg,"\n";
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fwrite(STDOUT, 'Please input a argument:');
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$response = trim(fgets(STDIN));
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$this->send($_sock, $response);
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echo "{$key} response to Client:".$response,"\n";
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}
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}
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}
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}
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/**
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* 握手处理
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* @param $newClient socket
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* @return int 接收到的信息
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*/
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public function handshaking($newClient, $line){
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$headers = array();
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$lines = preg_split("/\r\n/", $line);
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foreach($lines as $line)
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{
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$line = chop($line);
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if(preg_match('/\A(\S+): (.*)\z/', $line, $matches))
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{
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$headers[$matches[1]] = $matches[2];
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}
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}
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$secKey = $headers['Sec-WebSocket-Key'];
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$secAccept = base64_encode(pack('H*', sha1($secKey . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')));
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$upgrade = "HTTP/1.1 101 Web Socket Protocol Handshake\r\n" .
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"Upgrade: websocket\r\n" .
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"Connection: Upgrade\r\n" .
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"WebSocket-Origin: $this->address\r\n" .
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"WebSocket-Location: ws://$this->address:$this->port/websocket/websocket\r\n".
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"Sec-WebSocket-Accept:$secAccept\r\n\r\n";
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return socket_write($newClient, $upgrade, strlen($upgrade));
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}
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/**
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* 解析接收数据
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* @param $buffer
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* @return null|string
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*/
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public function message($buffer){
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$len = $masks = $data = $decoded = null;
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$len = ord($buffer[1]) & 127;
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if ($len === 126) {
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$masks = substr($buffer, 4, 4);
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$data = substr($buffer, 8);
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} else if ($len === 127) {
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$masks = substr($buffer, 10, 4);
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$data = substr($buffer, 14);
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} else {
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$masks = substr($buffer, 2, 4);
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$data = substr($buffer, 6);
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}
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for ($index = 0; $index < strlen($data); $index++) {
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$decoded .= $data[$index] ^ $masks[$index % 4];
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}
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return $decoded;
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}
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/**
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* 发送数据
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* @param $newClinet 新接入的socket
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* @param $msg 要发送的数据
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* @return int|string
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*/
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public function send($newClinet, $msg){
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$msg = $this->frame($msg);
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socket_write($newClinet, $msg, strlen($msg));
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}
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public function frame($s) {
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$a = str_split($s, 125);
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if (count($a) == 1) {
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return "\x81" . chr(strlen($a[0])) . $a[0];
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}
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$ns = "";
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foreach ($a as $o) {
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$ns .= "\x81" . chr(strlen($o)) . $o;
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}
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return $ns;
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}
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/**
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* 关闭socket
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*/
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public function close(){
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return socket_close($this->_sockets);
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}
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}
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$sock = new SocketService();
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$sock->run();
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复制代码
web.html
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width,initial-scale=1, maximum-scale=1, user-scalable=no">
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<title>websocket</title>
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</head>
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<body>
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<input id="text" value="">
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<input type="submit" value="send" onclick="start()">
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<input type="submit" value="close" onclick="close()">
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<div id="msg"></div>
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<script>
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/**
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0:未连接
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1:连接成功,可通讯
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2:正在关闭
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3:连接已关闭或无法打开
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*/
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//创建一个webSocket 实例
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var webSocket = new WebSocket("ws://192.168.31.152:8083");
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webSocket.onerror = function (event){
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onError(event);
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};
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// 打开websocket
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webSocket.onopen = function (event){
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onOpen(event);
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};
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//监听消息
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webSocket.onmessage = function (event){
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onMessage(event);
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};
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webSocket.onclose = function (event){
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onClose(event);
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}
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//关闭监听websocket
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function onError(event){
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document.getElementById("msg").innerHTML = "<p>close</p>";
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console.log("error"+event.data);
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};
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function onOpen(event){
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console.log("open:"+sockState());
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document.getElementById("msg").innerHTML = "<p>Connect to Service</p>";
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};
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function onMessage(event){
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console.log("onMessage");
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document.getElementById("msg").innerHTML += "<p>response:"+event.data+"</p>"
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};
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function onClose(event){
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document.getElementById("msg").innerHTML = "<p>close</p>";
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console.log("close:"+sockState());
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webSocket.close();
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}
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function sockState(){
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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'];
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return status[webSocket.readyState];
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}
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function start(event){
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console.log(webSocket);
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var msg = document.getElementById('text').value;
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document.getElementById('text').value = '';
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console.log("send:"+sockState());
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console.log("msg="+msg);
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webSocket.send("msg="+msg);
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document.getElementById("msg").innerHTML += "<p>request"+msg+"</p>"
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};
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function close(event){
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webSocket.close();
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}
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</script>
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</body>
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</html>
复制代码
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