本文作者：Tianheng Ni
本文分类：前端开发 浏览：1203
阅读时间：4718字, 约5-8分钟
网站好冷清啊，我来活跃一下气氛吧～
网上看了一堆资料，踩了一堆坑，终于把websocket服务器搭起来了。
下面和大家分享一下搭建的艰苦经历。
首先，代码部分：
ws.class.php:
<?php
class websocket{
public $log;
public $event;
public $signets;
public $users;
public $master;
public function __construct($config){
if (substr(php_sapi_name(), 0, 3) !== 'cli') {
die("Please run with cli!");
}
error_reporting(E_ALL);
set_time_limit(0);
ob_implicit_flush();
$this->event = $config['event'];
$this->log = $config['log'];
$this->master=$this->WebSocket($config['address'], $config['port']);
$this->sockets=array('s'=>$this->master);
}
function WebSocket($address,$port){
$server = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_set_option($server, SOL_SOCKET, SO_REUSEADDR, 1);
socket_bind($server, $address, $port);
socket_listen($server);
$this->log('Listening: '.$address.' : '.$port);
return $server;
}
function run(){
while(true){
$changes=$this->sockets;
@socket_select($changes,$write=NULL,$except=NULL,NULL);
foreach($changes as $sign){
if($sign==$this->master){
$client=socket_accept($this->master);
$this->sockets[]=$client;
$user = array(
'socket'=>$client,
'hand'=>false,
);
$this->users[] = $user;
$k=$this->search($client);
$eventreturn = array('k'=>$k,'sign'=>$sign);
$this->eventoutput('in',$eventreturn);
}else{
$len=socket_recv($sign,$buffer,2048,0);
$k=$this->search($sign);
$user=$this->users[$k];
if($len<7){
$this->close($sign);
$eventreturn = array('k'=>$k,'sign'=>$sign);
$this->eventoutput('out',$eventreturn);
continue;
}
if(!$this->users[$k]['hand']){
$this->handshake($k,$buffer);
}else{
$buffer = $this->uncode($buffer);
$eventreturn = array('k'=>$k,'sign'=>$sign,'msg'=>$buffer);
$this->eventoutput('msg',$eventreturn);
}
}
}
}
}
function search($sign){
foreach ($this->users as $k=>$v){
if($sign==$v['socket'])
return $k;
}
return false;
}
function close($sign){
$k=array_search($sign, $this->sockets);
socket_close($sign);
unset($this->sockets[$k]);
unset($this->users[$k]);
}
function handshake($k,$buffer){
$buf = substr($buffer,strpos($buffer,'Sec-WebSocket-Key:')+18);
$key = trim(substr($buf,0,strpos($buf,"\r\n")));
$new_key = base64_encode(sha1($key."258EAFA5-E914-47DA-95CA-C5AB0DC85B11",true));
$new_message = "HTTP/1.1 101 Switching Protocols\r\n";
$new_message .= "Upgrade: websocket\r\n";
$new_message .= "Sec-WebSocket-Version: 13\r\n";
$new_message .= "Connection: Upgrade\r\n";
$new_message .= "Sec-WebSocket-Accept: " . $new_key . "\r\n\r\n";
socket_write($this->users[$k]['socket'],$new_message,strlen($new_message));
$this->users[$k]['hand']=true;
return true;
}
function uncode($str){
$mask = array();
$data = '';
$msg = unpack('H*',$str);
$head = substr($msg[1],0,2);
if (hexdec($head{1}) === 8) {
$data = false;
}else if (hexdec($head{1}) === 1){
$mask[] = hexdec(substr($msg[1],4,2));
$mask[] = hexdec(substr($msg[1],6,2));
$mask[] = hexdec(substr($msg[1],8,2));
$mask[] = hexdec(substr($msg[1],10,2));
$s = 12;
$e = strlen($msg[1])-2;
$n = 0;
for ($i=$s; $i<= $e; $i+= 2) {
$data .= chr($mask[$n%4]^hexdec(substr($msg[1],$i,2)));
$n++;
}
}
return $data;
}
function code($msg){
$msg = preg_replace(array('/\r$/','/\n$/','/\r\n$/',), '', $msg);
$frame = array();
$frame[0] = '81';
$len = strlen($msg);
$frame[1] = $len<16?'0'.dechex($len):dechex($len);
$frame[2] = $this->ord_hex($msg);
$data = implode('',$frame);
return pack("H*", $data);
}
function ord_hex($data) {
$msg = '';
$l = strlen($data);
for ($i= 0; $i<$l; $i++) {
$msg .= dechex(ord($data{$i}));
}
return $msg;
}
function idwrite($id,$t){
if(!$this->users[$id]['socket']){return false;}//没有这个标示
$t=$this->code($t);
return socket_write($this->users[$id]['socket'],$t,strlen($t));
}
function write($k,$t){
$t=$this->code($t);
return socket_write($k,$t,strlen($t));
}
function eventoutput($type,$event){
call_user_func($this->event,$type,$event);
}
function log($t){
if($this->log){
$t=$t."\r\n";
fwrite(STDOUT, iconv('utf-8','gbk//IGNORE',$t));
}
}
}wss.php:
<?php
include 'ws.class.php';
$config=array(
'address'=>'127.0.0.1',
'port'=>'32000',//随便填写端口，只要没有被占用即可。注意后面nginx配置文件中也要改成127.0.0.1:你的端口
'event'=>'WSevent',//回调函数的函数名
'log'=>true,
);
$websocket = new websocket($config);
$websocket->run();
function WSevent($type,$event){
global $websocket;
if('in'==$type){
$websocket->log('User join id:'.$event['k']);
}elseif('out'==$type){
$websocket->log('User exit id:'.$event['k']);
}elseif('msg'==$type){
$websocket->log($event['k'].'Message:'.$event['msg']);
roboot($event['sign'],$event['msg']);
}
}
function roboot($sign,$t){
global $websocket;
switch ($t)
{
case 'hello':
$show='hello';
break;
case '用户socket.send()的消息':
$show='这个消息的回复';
break;
default:
$show='Unknown message.';
}
$websocket->write($sign,$show);
}
?>然后，在终端中运行这个程序。
可能会有很多警告，不过不要在意。
当然，如果要一直运行的话，可以通过systemd创建守护进程，这个不详细说明了。
最后，打开nginx（主）配置文件。
在您想搭建ws的那个server中，添加这么一段：
location /ws1 {
proxy_pass http://127.0.0.1:32001;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}保存，重启nginx服务。
然后ws服务器就搭好啦。
如果您这台服务器已经配置了SSL，那么就可以通过 wss://你的域名/ws 链接访问。（提示：https网页只能连接wss协议链接哦）
不然的话，只能通过 ws://你的域名/ws 访问。
然后如何在html中使用websocket这个网上教程一大堆，大家自己去看吧/
一个测试网页：https://apis.nth.ink/ws/
关于作者Tianheng Ni
- 卑微站长23564～ 苣蒻OIer，电脑爱好者，喜欢C++编程/折腾网站
- Email: eric_ni2008@163.com
- 注册于: 2020-04-05 07:11:36
2021-01-20 21:05 审核通过