php實(shí)現(xiàn)socket推送技術(shù)的示例
在socket出現(xiàn)之前已經(jīng)有ajax定時(shí)請(qǐng)求、長(zhǎng)輪詢等方案,但都不能滿足需求,socket就應(yīng)用而生了。
socket基本函數(shù)socket
總結(jié)下常用的socket函數(shù)
服務(wù)端: socket_create 創(chuàng)建socket設(shè)置基本參數(shù)
socket_bind 綁定ip和端口號(hào)
socket_listen 監(jiān)聽
socket_accept 客戶端的連接
socket_read 讀取客戶端的數(shù)據(jù)
socket_write 給單獨(dú)客戶端發(fā)送數(shù)據(jù)
socket_close 關(guān)閉連接
客戶端:socket_create 創(chuàng)建socket設(shè)置基本參數(shù)
socket_connect 連接socket
socket_write 給服務(wù)端發(fā)送數(shù)據(jù)
socket_read 讀取服務(wù)端數(shù)據(jù)
socket_close 關(guān)閉連接
H5websocket不多說了,上鏈接
OK,開始貼代碼~
----------------------------------------------------------分割線
服務(wù)端代碼:
<?php class WS { var $master; var $sockets = array(); var $debug = false;//true為調(diào)試模式,輸出log日志 var $handshake = array(); function __construct($address, $port){ $this->master=socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("socket_create() failed"); socket_set_option($this->master, SOL_SOCKET, SO_REUSEADDR, 1) or die("socket_option() failed"); socket_bind($this->master, $address, $port) or die("socket_bind() failed"); socket_listen($this->master,20) or die("socket_listen() failed"); $this->sockets[] = $this->master; $this->say("Server Started : ".date('Y-m-d H:i:s')); $this->say("Listening on : ".$address." port ".$port); $this->say("Master socket : ".$this->master."\n"); while(true){ $socketArr = $this->sockets; $write = NULL; $except = NULL; socket_select($socketArr, $write, $except, NULL); //自動(dòng)選擇來消息的socket 如果是握手 自動(dòng)選擇主機(jī) foreach ($socketArr as $socket){ if ($socket == $this->master){ //主機(jī) $client = socket_accept($this->master); if ($client < 0){ $this->log("socket_accept() failed"); continue; } else{ $this->connect($client); } } else { $bytes = @socket_recv($socket,$buffer,2048,0); if ($bytes == 0){ $this->disConnect($socket); } else{ $key = array_search($socket, $this->sockets); if (empty($this->handshake) || !isset($this->handshake[$key]) || !$this->handshake[$key]){ $this->doHandShake($socket, $buffer, $key); } else{ $buffer = $this->decode($buffer); echo $buffer.PHP_EOL; $key = array_search($socket, $this->sockets); $arr = $this->sockets; array_shift($arr); foreach ($arr as $s){ $this->send($s, $buffer); } } } } } } } function send($client, $msg){ $msg = $this->frame($msg); socket_write($client, $msg, strlen($msg)); } function connect($socket){ array_push($this->sockets, $socket); $this->say("\n" . $socket . " CONNECTED!"); $this->say(date("Y-n-d H:i:s")); } function disConnect($socket){ $index = array_search($socket, $this->sockets); socket_close($socket); $this->say($socket . " DISCONNECTED!"); if ($index >= 0){ echo 'unset index is:'.PHP_EOL; unset($this->sockets[$index]); } } function doHandShake($socket, $buffer, $handKey){ $this->log("\nRequesting handshake..."); $this->log($buffer); list($resource, $host, $origin, $key) = $this->getHeaders($buffer); $this->log("Handshaking..."); $upgrade = "HTTP/1.1 101 Switching Protocol\r\n" . "Upgrade: websocket\r\n" . "Connection: Upgrade\r\n" . "Sec-WebSocket-Accept: " . $this->calcKey($key) . "\r\n\r\n"; //必須以兩個(gè)回車結(jié)尾 $this->log($upgrade); $sent = socket_write($socket, $upgrade, strlen($upgrade)); $this->handshake[$handKey]=true; $this->log("Done handshaking..."); return true; } function getHeaders($req){ $r = $h = $o = $key = null; if (preg_match("/GET (.*) HTTP/" ,$req,$match)) { $r = $match[1]; } if (preg_match("/Host: (.*)\r\n/" ,$req,$match)) { $h = $match[1]; } if (preg_match("/Origin: (.*)\r\n/" ,$req,$match)) { $o = $match[1]; } if (preg_match("/Sec-WebSocket-Key: (.*)\r\n/",$req,$match)) { $key = $match[1]; } return array($r, $h, $o, $key); } function calcKey($key){ //基于websocket version 13 $accept = base64_encode(sha1($key . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11', true)); return $accept; } function decode($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 $decoded; } function frame($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 $ns; } function say($msg = ""){ echo $msg . "\n"; } function log($msg = ""){ if ($this->debug){ echo $msg . "\n"; } } } new WS('localhost', 4000);
客戶端代碼(H5):
<html> <head> <title>demo</title> <script src="https://cdn.bootcss.com/jquery/1.9.1/jquery.min.js"></script> </head> <body> <input type="text" id="content"> <input type="button" value="send" id="send"> <script type="text/javascript"> var ws = new WebSocket("ws://localhost:4000"); ws.onopen = function(){ console.log("握手成功"); } ws.onmessage = function(e){ console.log("message:" + e.data); } ws.onerror = function(){ console.log("error"); } $("#send").click(function(){ content = $("#content").val(); console.log(content); ws.send(content); }) </script> </body> </html>
然后執(zhí)行php demo.php 開啟socket(從運(yùn)維那偷學(xué)一招,linux下執(zhí)行nohup php demo.php &可以在后臺(tái)執(zhí)行),瀏覽器打開多個(gè)index.html,就能建立通訊了。
代碼解析:
1.屬性$sockets數(shù)組保存每個(gè)accept連接(不知道這么描述對(duì)不對(duì));
2.屬性$handshake數(shù)組保存連接是否在連接狀態(tài);
以上這篇php實(shí)現(xiàn)socket推送技術(shù)的示例就是小編分享給大家的全部?jī)?nèi)容了,希望能給大家一個(gè)參考,也希望大家多多支持腳本之家。
相關(guān)文章
分享六個(gè)比較好用的php數(shù)組Array函數(shù)
這篇文章給大家分享六個(gè)比較好用的php數(shù)組Array函數(shù),非常不錯(cuò),具有一定的參考借鑒價(jià)值,需要的朋友參考下吧2018-07-07yii的入口文件index.php中為什么會(huì)有這兩句
這篇文章主要介紹了yii的入口文件index.php中為什么會(huì)有這兩句 的相關(guān)資料,需要的朋友可以參考下2016-08-08使用pthreads實(shí)現(xiàn)真正的PHP多線程(需PHP5.3以上版本)
PHP 5.3 以上版本,使用pthreads PHP擴(kuò)展,可以使PHP真正地支持多線程。多線程在處理重復(fù)性的循環(huán)任務(wù),能夠大大縮短程序執(zhí)行時(shí)間2014-05-05smarty自定義函數(shù)htmlcheckboxes用法實(shí)例
這篇文章主要介紹了smarty自定義函數(shù)htmlcheckboxes用法,實(shí)例分析了smarty模板與函數(shù)的使用技巧,需要的朋友可以參考下2015-01-01Laravel 5框架學(xué)習(xí)之環(huán)境與配置
本文給大家主要介紹的是Laravel5框架中的環(huán)境配置,給大家詳細(xì)介紹了.env的配置文件,包含的數(shù)據(jù)庫(kù)配置信息的詳細(xì)解釋,這里推薦給大家,有需要的小伙伴參考下。2015-04-04HTTP頭隱藏PHP版本號(hào)實(shí)現(xiàn)過程解析
這篇文章主要介紹了HTTP頭隱藏PHP版本號(hào)實(shí)現(xiàn)過程解析,文中通過示例代碼介紹的非常詳細(xì),對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值,需要的朋友可以參考下2020-12-12使用PHP下載CSS文件中的所有圖片【幾行代碼即可實(shí)現(xiàn)】
本文主要對(duì)使用PHP下載CSS文件中的所有圖片的方法進(jìn)行介紹,只需幾行代碼即可實(shí)現(xiàn),且注釋詳細(xì)。下面就跟小編一起來看下吧2016-12-12基于 Swoole 的微信掃碼登錄功能實(shí)現(xiàn)代碼
隨著微信的普及,掃碼登錄方式越來越被現(xiàn)在的應(yīng)用所使用。它因?yàn)椴挥萌ビ涀∶艽a,只要有微信號(hào)即可方便快捷登錄.這里基于微信公眾平臺(tái)的帶參數(shù)臨時(shí)二維碼,并且結(jié)合 Swoole 的 WebSocket 服務(wù)實(shí)現(xiàn)掃碼登錄2018-01-01