100多行PHP代码实现socks5代理服务器[2]_php实例

100多行PHP代码实现socks5代理服务器，这次是使用swoole纯异步来写，使用状态机来处理数据。目前用它访问开源中国木有压力，但访问网易新闻就压力山大。我发现我用别的语言写得代理，访问网易新闻都压力大。嘎嘎，学艺不精。

对swoole理解不深，不知道怎么处理socket shutdown只关闭读/写这样，还有就是连接超时，读写超时这种怎么处理。在网上看到作者说要用定时器，感觉好麻烦，所以，这次的代理，虽然个人用，一般不会有什么问题，但离产品级的代理，还有段路要走。

如果要利用多核，就使用process模式，设置worker个数为cpu数量即可。

set([   'max_conn' => 1000,    'daemonize' => 1,   'reactor_num' => 1,   'worker_num' => 1,   'dispatch_mode' => 2,   'buffer_output_size' => 128 * 1024 * 1024,   'open_cpu_affinity' => 1,   'open_tcp_nodelay' => 1,   'log_file' => 'socks5_server.log',  ]);  $server->on('connect', [$this, 'onConnect']);  $server->on('receive', [$this, 'onReceive']);  $server->on('close', [$this, 'onClose']);  $server->start(); } public function onConnect($server, $fd, $fromID) {  $this->clients[$fd] = new Client(); } public function onReceive($server, $fd, $fromID, $data) {  ($this->clients[$fd])->data .= $data;  $this->parse($server, $fd);  } public function onClose($server, $fd, $fromID) {  $client = $this->clients[$fd];  $client->connected = false; } private function parse($server, $fd)  {  $client = $this->clients[$fd];  switch ($client->status) {   case 0: {    if (strlen($client->data) >= 2) {     $request = unpack('c*', substr($client->data, 0, 2));     if ($request[1] !== 0x05) {      echo '协议不正确:' . $request[1], PHP_EOL;      $server->close($fd);      break;     }     $nmethods = $request[2];     if (strlen($client->data) >= 2 + $nmethods) {      $client->data = substr($client->data, 2 + $nmethods);      $server->send($fd, "\x05\x00");      $client->status = 1;     }    }   }   case 1: {    if (strlen($client->data) data);    $aType = $request[4];    if ($aType === 0x03) { // domain     $domainLen = $request[5];     if (strlen($client->data) data, 5, $domainLen);     $port = unpack('n', substr($client->data, 5 + $domainLen, 2))[1];      $client->data = substr($client->data, 5 + $domainLen + 2);    } else if ($aType === 0x01) { // ipv4     $domain = long2ip(unpack('N', substr($client->data, 4, 4))[1]);     $port = unpack('n', substr($client->data, 8, 2))[1];      $client->data = substr($client->data, 10);    } else {     echo '不支持的atype:' . $aType, PHP_EOL;     $server->close($fd);     break;    }    $remote = new swoole_client(SWOOLE_SOCK_TCP, SWOOLE_SOCK_ASYNC);    $remote->on('connect', function($cli) use($client, $server, $fd, $remote) {     $server->send($fd, "\x05\x00\x00\x01\x00\x00\x00\x00\x00\x00");     $client->status = 2;     $clie<strong>2本文来源gaodaima#com搞(代@码$网6</strong><pre>搞gaodaima代码

nt->remote = $remote; }); $remote->on(“error”, function(swoole_client $cli) use($server, $fd) { //$server->send($fd, “”); // todo 连接不上remote echo ‘connect to remote error.’, PHP_EOL; $server->close($fd); }); $remote->on(‘receive’, function($cli, $data) use($server, $fd, $client) { if (!$client->connected) { echo ‘connection has been closed.’, PHP_EOL; return; } $server->send($fd, $data); }); $remote->on(‘close’, function($cli) use($server, $fd, $client) { $client->remote = null; }); if ($aType === 0x03) { swoole_async_dns_lookup($domain, function($host, $ip) use($remote, $port, $server, $fd) { //todo 当host为空时的处理。貌似不存在的域名都解析成了本机的外网ip，奇怪 if (empty($ip) || empty($host)) { echo “host:{$host}, ip:{$ip}\n”; $server->close($fd); return; } $remote->connect($ip, $port); }); } else { $remote->connect($domain, $port); } } case 2: { if (strlen($client->data) === 0) { break; } if ($client->remote === null) { echo ‘remote connection has been closed.’, PHP_EOL; break; } $sendByteCount = $client->remote->send($client->data); if ($sendByteCount === false || $sendByteCount data)) { echo ‘data length:’ , strlen($client->data), ‘ send byte count:’, $sendByteCount, PHP_EOL; echo $client->data, PHP_EOL; $server->close($fd); } $client->data = ”; } } }}(new Server())->start();