<?php

use Workerman\Worker;
use Workerman\Connection\TcpConnection;
use Workerman\Connection\AsyncTcpConnection;
use Workerman\Protocols\Http\Request;

require_once __DIR__ . '/vendor/autoload.php';

$worker = new Worker('http://0.0.0.0:8686');


function replaceHost($data,$host)
{
    return preg_replace('/Host: (.*)/i','Host: '.$host,$data);
}
function HTMLview($filePath, $data) {
    ob_start();
    extract($data);
    include $filePath;
    $str = ob_get_contents();
    ob_end_clean();
 
    return $str;
}
$worker->onMessage = function(TcpConnection $connection, Request $data)
{
    $token = $data->cookie('token', 'null');
    if($token=='null'){
        $host = $data->host();


        $public=true;

        $connection->send(HTMLview('./view/login.php', array('public'=>$public)));
        $connection->close();
    }


     // Parse http header.
     list($method, $addr, $http_version) = explode(' ', $data);
     $_headers=explode("\r\n",$data);
     $headers=[];
     foreach ($_headers as $_header){
         $_point=strpos($_header,':');
         if ($_point===false) continue;
         $headers[substr($_header,0,$_point)]=trim(trim(substr($_header,$_point),':'));
     }

     //源站IP地址
     $source_ip='106.54.203.91';
     $source_host='laysense.cn';
     $ssl=false;


     if($ssl==true){
        $port=443;
        $source_ip=$source_host;
     }else{
     $port=80;
     }
     print_r('用户IP：'.$connection->getRemoteAddress().'| 访问域名：'.$headers['Host'] .' ｜ 源站：'.gethostbyname($source_ip).'| 回源域名'.$source_host.'|SSL:'.$ssl);

     // Async TCP connection.
     $remote_connection = new AsyncTcpConnection('tcp://'.$source_ip.':'.$port);
     // CONNECT.
     if($ssl==true){
        $remote_connection->transport = 'ssl';
     }

     if ($method !== 'CONNECT') {
         //替换request 中的回源host
         $remote_connection->send(replaceHost($data,$source_host));
         // POST GET PUT DELETE etc.
     } else {
         $connection->send("HTTP/1.1 200 Connection Established\r\n\r\n");
     }

     $remote_connection->onMessage=function (TcpConnection $SourceConn, $SourceData)use ($connection){
         $connection->send($SourceData);
     };

     $remote_connection->onClose = function ($source) use ($connection) {
         $connection->close();
     };

     $remote_connection->onBufferFull = function ($SourceConn) use ($connection) {
         $connection->pauseRecv();
     };

     $remote_connection->onBufferDrain = function ($SourceConn) use ($connection) {
         $connection->resumeRecv();
     };

     $connection->onMessage=function (TcpConnection $ClientConn, $ClientData)use ($remote_connection,$source_host){
         $remote_connection->send(replaceHost($ClientData,$source_host));
     };

     $connection->onClose = function (TcpConnection $ClientConn) use ($remote_connection) {
         $remote_connection->close();
     };

     $connection->onBufferFull = function (TcpConnection $ClientConn) use ($remote_connection) {
         $remote_connection->pauseRecv();
     };

     $connection->onBufferDrain = function (TcpConnection $ClientConn) use ($remote_connection) {
         $remote_connection->resumeRecv();
     };

     $remote_connection->connect();
};

// 运行worker
Worker::runAll();