如题，这个是100行php代码实现代理上网最终篇，玩具性质，个人用可以，因为1性能不高，2加解密IV重复使用。 用法就是socks5服务端和加密端口转发服务端运行在可自由上网的机器上，加密端口转发客户端运行在本地，配置socks5代理即可。

加密端口转发分服务端和客户端，偷懒了，没有把代码整合到一块去。

客户端：

<?php
class Server
{public $mode;public $buffer = [];private $clients = [];public function __construct($mode){$this->mode = $mode;}public function start(){$server = new swoole_server('0.0.0.0', 2080, SWOOLE_PROCESS, SWOOLE_SOCK_TCP);$server->set(['max_conn' => 1000,'daemonize' => 0,'worker_num' => 1,'dispatch_mode' => 2,//'max_request' => 2048,'open_cpu_affinity' => 1,'open_tcp_nodelay' => 1,'log_file' => 'port_forward_client.log','heartbeat_check_interval' => 30,'heartbeat_idle_time' => 60,]);$server->on('connect', [$this, 'onConnect']);$server->on('receive', [$this, 'onReceive']);$server->on('close', [$this, 'onClose']);$server->start();}public function onConnect($server, $fd, $fromID){echo 'onConnect.', PHP_EOL;$this->buffer[$fd] = '';$remote = new swoole_client(SWOOLE_SOCK_TCP, SWOOLE_SOCK_ASYNC);$proxy = $this;$remote->on('connect', function($cli) use($proxy, $server, $fd, $remote) {echo 'connected to remote.', PHP_EOL;$this->clients[$fd] = $remote;if (isset($proxy->buffer[$fd]) && strlen($proxy->buffer[$fd]) > 0) {$remote->send($proxy->buffer[$fd]);$proxy->buffer[$fd] = '';}});$remote->on("error", function(swoole_client $cli) use($server, $fd) {echo 'connect to remote error.', PHP_EOL;$server->close($fd);});$remote->on('receive', function($client, $data) use($proxy, $server, $fd) {$data = ($this->mode === 'client') ? $proxy->decryptData($data) : $proxy->encryptData($data);$server->send($fd, $data);});$remote->on('close', function($cli) use($server, $fd) {//$server->close($fd);});$remote->connect('127.0.0.1', 1081);}public function onReceive($server, $fd, $fromID, $data){echo 'onReceive', PHP_EOL;$data = ($this->mode === 'client') ? $this->encryptData($data) : $this->decryptData($data);if (!isset($this->clients[$fd])) {$this->buffer[$fd] .= $data;return;}if (isset($this->buffer[$fd]) && strlen($this->buffer[$fd]) > 0) {$this->clients[$fd]->send($this->buffer[$fd]);$this->buffer[$fd] = '';}$this->clients[$fd]->send($data);}public function onClose($server, $fd, $fromID){//unset($this->clients[$fd]);}public function encryptData($data){return openssl_encrypt($data, 'AES-128-CFB', 'password', OPENSSL_RAW_DATA, '0123456789012345');}public function decryptData($data){return openssl_decrypt($data, 'AES-128-CFB', 'password', OPENSSL_RAW_DATA, '0123456789012345');}
}(new Server('client'))->start();

服务端：

<?php
class Server
{public $mode;public $buffer = [];private $clients = [];public function __construct($mode){$this->mode = $mode;}public function start(){$server = new swoole_server('127.0.0.1', 1081, SWOOLE_PROCESS, SWOOLE_SOCK_TCP);$server->set(['max_conn' => 1000,'daemonize' => 0,'worker_num' => 1,'dispatch_mode' => 2,//'max_request' => 2048,'open_cpu_affinity' => 1,'open_tcp_nodelay' => 1,'log_file' => 'port_forward.log','heartbeat_check_interval' => 30,'heartbeat_idle_time' => 60,]);$server->on('connect', [$this, 'onConnect']);$server->on('receive', [$this, 'onReceive']);$server->on('close', [$this, 'onClose']);$server->start();}public function onConnect($server, $fd, $fromID){echo 'onConnect.', PHP_EOL;$this->buffer[$fd] = '';$remote = new swoole_client(SWOOLE_SOCK_TCP, SWOOLE_SOCK_ASYNC);$proxy = $this;$remote->on('connect', function($cli) use($proxy, $server, $fd, $remote) {echo 'connected to remote.', PHP_EOL;$this->clients[$fd] = $remote;if (isset($proxy->buffer[$fd]) && strlen($proxy->buffer[$fd]) > 0) {$remote->send($proxy->buffer[$fd]);$proxy->buffer[$fd] = '';}});$remote->on("error", function(swoole_client $cli) use($server, $fd) {echo 'connect to remote error.', PHP_EOL;$server->close($fd);});$remote->on('receive', function($client, $data) use($proxy, $server, $fd) {$data = ($this->mode === 'client') ? $proxy->decryptData($data) : $proxy->encryptData($data);$server->send($fd, $data);});$remote->on('close', function($cli) use($server, $fd) {//$server->close($fd);});$remote->connect('127.0.0.1', 8388);}public function onReceive($server, $fd, $fromID, $data){echo 'onReceive', PHP_EOL;$data = ($this->mode === 'client') ? $this->encryptData($data) : $this->decryptData($data);if (!isset($this->clients[$fd])) {$this->buffer[$fd] .= $data;return;}if (isset($this->buffer[$fd]) && strlen($this->buffer[$fd]) > 0) {$this->clients[$fd]->send($this->buffer[$fd]);unset($this->buffer[$fd]);}$this->clients[$fd]->send($data);}public function onClose($server, $fd, $fromID){//unset($this->clients[$fd]);}public function encryptData($data){return openssl_encrypt($data, 'AES-128-CFB', 'password', OPENSSL_RAW_DATA, '0123456789012345');}public function decryptData($data){return openssl_decrypt($data, 'AES-128-CFB', 'password', OPENSSL_RAW_DATA, '0123456789012345');}
}(new Server('server'))->start();