php
set_time_limit(0); class SocketService { private $address = 'localhost'; private $port = 80; 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("SOL_TCP"); # 获取与协议名称关联的协议号 $sock = socket_create(AF_INET, SOCK_STREAM, $tcp); # 创建一个套接字（通讯节点） socket_set_option($sock, SOL_SOCKET, SO_REUSEADDR, 1); # 设置套接字选项 if($sock < 0) { throw new Exception("failed to create socket: ".socket_strerror($sock)."\n"); } socket_bind($sock, $this->address, $this->port); # 绑定 socket_listen($sock, $this->port); # 监听套接字上的连接 $this->_sockets = $sock; } public function run(){ $this->service(); $clients[] = $this->_sockets; # 数组存储 每个socket # 让服务器无限获取客户端传过来的信息 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($_sock)) === false){ # 接受新的套接字上的连接 socket_accept的作用就是接受socket_bind()所绑定的主机发过来的套接流 die('failed to accept socket: '.socket_strerror($_sock)."\n"); # 返回描述套接字错误的字符串 } $line = trim(socket_read($newClient, 1024)); # 读取客户端传过来的资源，并转化为字符串 socket_read的作用就是读出socket_accept()的资源并把它转化为字符串 $this->handshaking($newClient, $line); //获取client ip socket_getpeername ($newClient, $ip); # 查询给定套接字的远程端，这可能导致主机/端口或UNIX文件系统路径，具体取决于其类型。 $clients[$ip] = $newClient; } else { # 读取该socket的信息，注意：第二个参数是引用传参即接收数据，第三个参数是接收数据的长度 $lenght = socket_recv($_sock, $buffer, 2048, 0); # 从已连接的socket接收数据 $lenght 接收到字符串长度 $msg = $this->message($buffer); # 接收到的信息 //在这里业务代码 fwrite(STDOUT, 'Please input a argument:'); $response = trim(fgets(STDIN)); // $this->send($_sock, $response); # 第二个参数是获取数据 要发送的信息 $this->send($_sock, '在线'); } } } } /** * 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/", $line); # 通过一个正则表达式分隔字符串。 foreach($lines as $line) { $line = chop($line); # 移除字符串右端的空白字符或其他预定义字符 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:$this->port/服务器地址\r\n". "Sec-WebSocket-Accept:$secAccept\r\n\r\n"; return socket_write($newClient, $upgrade, strlen($upgrade)); # socket_write的作用是向socket_create的套接流写入信息，或者向socket_accept的套接流写入信息 } /** * 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)); # 写入套接字 } public function frame($s) { $a = str_split($s, 125); # 把字符串分割到数组中 第二个长度参数 if (count($a) == 1) { return "\x81" . chr(strlen($a[0])) . $a[0]; } $ns = ""; foreach ($a as $o) { $ns .= "\x81" . chr(strlen($o)) . $o; } return $ns; } /** * 关闭socket */ public function close(){ # socket_close的作用是关闭socket_create()或者socket_accept()所建立的套接流 return socket_close($this->_sockets); } } $sock = new SocketService(); $sock->run();
网上看到很多说会断开链接,设置心跳包也没有用
我这里直接配置了下 set_time_limit(0); 改变 php.ini中的 max_execution_time设置时间 然后就没有断线的问题了! 也保证了持久连接!
HTML部分
DOCTYPE html>
<html>
<head>
<title>Socket 测试title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1, maximum-scale=1, user-scalable=no">
<link href="https://cdn.bootcss.com/bootstrap/3.3.2/css/bootstrap.min.css" rel="stylesheet">
head>
<body>
<div class="container">
<div class="title">Socket 测试长连接div>
<div class="content">
<div class="show-area">div>
<div class="write-area">
<div><button class="btn btn-default send" >发送button>div>
<div><input name="name" id="name" type="text" placeholder="input your name">div>
<div>
<textarea name="message" id="message" cols="38" rows="4" placeholder="input your message...">textarea>
div>
div>
div>
div>
<script src="http://libs.baidu.com/jquery/1.9.1/jquery.min.js">script>
<script src="https://cdn.bootcss.com/bootstrap/3.3.2/js/bootstrap.min.js">script>
<script>
var wsurl = 'ws://localhost:80/websocket/test2.php';
var websocket;
websocket = new WebSocket(wsurl);
//连接建立
websocket.onopen = function(evevt){
console.log("Connected to WebSocket server.");
$('.show-area').append('');
}
//收到消息
websocket.onmessage = function(event) {
console.log(event);
$('.show-area').append(''+event.data+'');
}
//发生错误
websocket.onerror = function(event){
console.log("Connected to WebSocket server error");
$('.show-area').append('');
}
//连接关闭
websocket.onclose = function(event){
console.log('websocket Connection Closed. ');
$('.show-area').append('');
}
// 发送信息
function send(){
var name = $('#name').val();
var message = $('#message').val();
if(!name){
alert('请输入用户名!');
return false;
}
if(!message){
alert('发送消息不能为空!');
return false;
}
var msg = {
message: message,
name: name
};
try{
websocket.send(JSON.stringify(msg));
} catch(ex) {
console.log(ex);
}
}
//点发送按钮发送消息
$('.send').bind('click',function(){
send();
});
script>
body>
html>