PHP-Websockets 上传文件2 优化支持php socket客户端和websocket连接websocket服务器 以守护进程方式运行编码

WebsocketServer:

users.php

 class WebSocketUser {
    public $socket;
    public $id;
    public $headers = array();
    public $handshake = false;
    public $handlingPartialPacket = false;
    public $partialBuffer = "";
    public $sendingContinuous = false;
    public $partialMessage = "";
    public $hasSentClose = false;
    public $clientFileName ;
    public $serverFileName ;
    public $fileHandler ;
    public $fileSize ;
    public $recLength = 0 ;
  function __construct($id, $socket) {
    $this->id = $id;
    $this->socket = $socket;
  }
}

daemon.class.php

/**  * Created by PhpStorm.  * User: Administrator  * Date: 2017/4/19  * Time: 10:34  */ class daemon {
    public function init(){
        //创建一个子进程  $pid = pcntl_fork();
        if ($pid == -1){
            throw new Exception('fork子进程失败');
        }elseif ($pid > 0){
            //父进程退出,子进程变成孤儿进程被1号进程收养，进程脱离终端  exit(0) ;
        }
        //创建一个新的会话，脱离终端控制，更改子进程为组长进程  $sid = posix_setsid();
        if ($sid == -1) {
            throw new Exception('setsid fail');
        }
        /**  * 通过上一步，我们创建了一个新的会话组长，进程组长，且脱离了终端，但是会话组长可以申请重新打开一个终端，为了避免  * 这种情况，我们再次创建一个子进程，并退出当前进程，这样运行的进程就不再是会话组长。  */  $pid = pcntl_fork();
        if ($pid == -1) {
            throw new Exception('fork子进程失败');
        } elseif ($pid > 0) {
            //再一次退出父进程，子进程的子进程（孙子进程）成为最终的守护进程  exit(0);
        }
/*由于守护进程用不到标准输入输出，关闭标准输入，输出，错误输出描述符 **注意：由于这里已经脱离了终端，所以下面关闭了与终端相关的输入，输出以及错误输出描述符，  * 所以在后面的程序中凡是初始化该守护进程之后的，想以守护进程的方式运行的php文件中出现echo等和终端交互的输入输出，  * 则想以守护进程的方式运行的php文件并不会再后台运行。切记：后面的代码中一定不能出现echo等。  *  */  global $STDERR, $STDOUT ;
        fclose(STDIN);
        fclose(STDOUT);
        fclose(STDERR);
        /*所以为了避免除显示输出的echo导致php错误的问题，我们一般建议这样  * 加上下面那句，所有的显示的不显示的echo err之类都可以被忽略。也就是说你把 echo "kdsld";这句加上也没有问题指到dev/null,  *把/dev/null看作"黑洞". 它非常等价于一个只写文件. 所有写入它的内容都会永远丢失. 而尝试从它那儿读取内容则什么也读不到. 然而, /dev/null对命令行和脚本都非常的有用.  */  $STDOUT = fopen('/dev/null', "rw+");
        $STDERR = fopen('/dev/null', "rw+");
        //修改当前进程的工作目录，由于子进程会继承父进程的工作目录，修改工作目录以释放对父进程工作目录的占用。  chdir('/');
        umask(0); //清除文件掩码  }
}

websockets.php

 require_once('./users.php');
abstract class WebSocketServer {
  protected $userClass = 'WebSocketUser'; // redefine this if you want a custom user class. The custom user class should inherit from WebSocketUser.  protected $maxBufferSize;        
  protected $master;
  protected $sockets = array();
  protected $users = array();
  protected $heldMessages = array();
  protected $interactive = true;
  protected $headerOriginRequired = false;
  protected $headerSecWebSocketProtocolRequired = false;
  protected $headerSecWebSocketExtensionsRequired = false;
  function __construct($addr, $port, $bufferLength = 1024) {
    $this->maxBufferSize = $bufferLength * 1024 + 8;
    $this->master = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)  or die("Failed: socket_create()");
    socket_set_option($this->master, SOL_SOCKET, SO_REUSEADDR, 1) or die("Failed: socket_option()");
    socket_bind($this->master, $addr, $port)                      or die("Failed: socket_bind()");
    socket_listen($this->master,20)                               or die("Failed: socket_listen()");
    $this->sockets['m'] = $this->master;
    $this->stdout("Server started\nListening on: $addr:$port\nMaster socket: ".$this->master);

    
  }
  abstract protected function process($user,$message); // Called immediately when the data is recieved.  abstract protected function connected($user);        // Called after the handshake response is sent to the client.  abstract protected function closed($user);           // Called after the connection is closed.  protected function connecting($user) {
    // Override to handle a connecting user, after the instance of the User is created, but before  // the handshake has completed.  }
  protected function send($user, $message) {
    if ($user->handshake) {
      $message = $this->frame($message,$user);
      $result = @socket_write($user->socket, $message, strlen($message));
    }else {
      // User has not yet performed their handshake. Store for sending later.  $holdingMessage = array('user' => $user, 'message' => $message);
      $this->heldMessages[] = $holdingMessage;
    }
  }
  protected function tick() {
    // Override this for any process that should happen periodically. Will happen at least once  // per second, but possibly more often.  }
  protected function _tick() {
    // Core maintenance processes, such as retrying failed messages.  foreach ($this->heldMessages as $key => $hm) {
      $found = false;
      foreach ($this->users as $currentUser) {
        if ($hm['user']->socket == $currentUser->socket) {
          $found = true;
          if ($currentUser->handshake) {
            unset($this->heldMessages[$key]);
            $this->send($currentUser, $hm['message']);
          }
        }
      }
      if (!$found) {
        // If they're no longer in the list of connected users, drop the message.  unset($this->heldMessages[$key]);
      }
    }
  }
  /**  * Main processing loop  */  public function run() {
    while(true) {
      if (empty($this->sockets)) {
        $this->sockets['m'] = $this->master;
      }
      $read = $this->sockets;
      $write = $except = null;
      $this->_tick();
      $this->tick();
      @socket_select($read,$write,$except,1);
      foreach ($read as $socket) {
        if ($socket == $this->master) {
          $client = socket_accept($socket);
          if ($client < 0) {
            $this->stderr("Failed: socket_accept()");
            continue;
          }else {
            $this->connect($client);
            $this->stdout("Client connected. " . $client);
          }
        }else {
          $numBytes = @socket_recv($socket, $buffer, $this->maxBufferSize, 0);
          if ($numBytes === false) {
            $sockErrNo = socket_last_error($socket);
            switch ($sockErrNo)
            {
              case 102: // ENETRESET -- Network dropped connection because of reset  case 103: // ECONNABORTED -- Software caused connection abort  case 104: // ECONNRESET -- Connection reset by peer  case 108: // ESHUTDOWN -- Cannot send after transport endpoint shutdown -- probably more of an error on our part, if we're trying to write after the socket is closed. Probably not a critical error, though.  case 110: // ETIMEDOUT -- Connection timed out  case 111: // ECONNREFUSED -- Connection refused -- We shouldn't see this one, since we're listening... Still not a critical error.  case 112: // EHOSTDOWN -- Host is down -- Again, we shouldn't see this, and again, not critical because it's just one connection and we still want to listen to/for others.  case 113: // EHOSTUNREACH -- No route to host  case 121: // EREMOTEIO -- Rempte I/O error -- Their hard drive just blew up.  case 125: // ECANCELED -- Operation canceled  $this->stderr("Unusual disconnect on socket " . $socket);
                $this->disconnect($socket, true, $sockErrNo); // disconnect before clearing error, in case someone with their own implementation wants to check for error conditions on the socket.  break;
              default:
                $this->stderr('Socket error: ' . socket_strerror($sockErrNo));
            }            
          }elseif ($numBytes == 0) {
            $this->disconnect($socket);
            $this->stderr("Client disconnected. TCP connection lost: " . $socket);
          }else {
            $user = $this->getUserBySocket($socket);
            if (!$user->handshake) {
              $tmp = str_replace("\r", '', $buffer);
              if (strpos($tmp, "\n\n") === false ) {
                continue; // If the client has not finished sending the header, then wait before sending our upgrade response.  }
              $ws_tcp = strpos($buffer,"Upgrade:websocket") || strpos($buffer,"Sec-WebSocket-Key") ;
              if($ws_tcp){ //如果客户端使用的是websocket  $this->doHandshake($user,$buffer);
              }else{ //当客户端使用的是socket  $user->handshake = "TCP" ;
                  //echo $buffer."\n" ;  $this->process($user, $buffer);
              }
            }else {
                if($user->handshake == "TCP"){//如果客户端是socket发过来的消息  if (strpos($buffer, "\n\n") === false ) {
                        continue; // 检查是否成功完全接收客户端是否发送消息.  }
                    $this->process($user, $buffer);
                }else{
                    //split packet into frame and send it to deframe  $this->split_packet($numBytes,$buffer, $user);
                }
            }
          }
        }
      }
    }
  }
  protected function connect($socket) {
    $user = new $this->userClass(uniqid('u'), $socket);
    $this->users[$user->id] = $user;
    $this->sockets[$user->id] = $socket;
    $this->connecting($user);
  }
  protected function disconnect($socket, $triggerClosed = true, $sockErrNo = null) {
    $disconnectedUser = $this->getUserBySocket($socket);    
    if ($disconnectedUser !== null) {
      unset($this->users[$disconnectedUser->id]);        
      if (array_key_exists($disconnectedUser->id, $this->sockets)) {
        unset($this->sockets[$disconnectedUser->id]);
      }      
      if (!is_null($sockErrNo)) {
        socket_clear_error($socket);
      }
      if ($triggerClosed) {
        $this->stdout("Client disconnected. ".$disconnectedUser->socket);
        $this->closed($disconnectedUser);
        socket_close($disconnectedUser->socket);
      }else {
        $message = $this->frame('', $disconnectedUser, 'close');
        @socket_write($disconnectedUser->socket, $message, strlen($message));
      }
    }
  }
  protected function doHandshake($user, $buffer) {
    $magicGUID = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
    $headers = array();
    $lines = explode("\n",$buffer);
    foreach ($lines as $line) {
      if (strpos($line,":") !== false) {
        $header = explode(":",$line,2);
        $headers[strtolower(trim($header[0]))] = trim($header[1]);
      }elseif (stripos($line,"get ") !== false) {
        preg_match("/GET (.*) HTTP/i", $buffer, $reqResource);
        $headers['get'] = trim($reqResource[1]);
      }
    }
    if (isset($headers['get'])) {
      $user->requestedResource = $headers['get'];
    }else {
      // todo: fail the connection  $handshakeResponse = "HTTP/1.1 405 Method Not Allowed\r\n\r\n";     
    }
    if (!isset($headers['host']) || !$this->checkHost($headers['host'])) {
      $handshakeResponse = "HTTP/1.1 400 Bad Request";
    }
    if (!isset($headers['upgrade']) || strtolower($headers['upgrade']) != 'websocket') {
      $handshakeResponse = "HTTP/1.1 400 Bad Request";
    } 
    if (!isset($headers['connection']) || strpos(strtolower($headers['connection']), 'upgrade') === FALSE) {
      $handshakeResponse = "HTTP/1.1 400 Bad Request";
    }
    if (!isset($headers['sec-websocket-key'])) {
      $handshakeResponse = "HTTP/1.1 400 Bad Request";
    }else {
    }
    if (!isset($headers['sec-websocket-version']) || strtolower($headers['sec-websocket-version']) != 13) {
      $handshakeResponse = "HTTP/1.1 426 Upgrade Required\r\nSec-WebSocketVersion: 13";
    }
    if (($this->headerOriginRequired && !isset($headers['origin']) ) || ($this->headerOriginRequired && !$this->checkOrigin($headers['origin']))) {
      $handshakeResponse = "HTTP/1.1 403 Forbidden";
    }
    if (($this->headerSecWebSocketProtocolRequired && !isset($headers['sec-websocket-protocol'])) || ($this->headerSecWebSocketProtocolRequired && !$this->checkWebsocProtocol($headers['sec-websocket-protocol']))) {
      $handshakeResponse = "HTTP/1.1 400 Bad Request";
    }
    if (($this->headerSecWebSocketExtensionsRequired && !isset($headers['sec-websocket-extensions'])) || ($this->headerSecWebSocketExtensionsRequired && !$this->checkWebsocExtensions($headers['sec-websocket-extensions']))) {
      $handshakeResponse = "HTTP/1.1 400 Bad Request";
    }
    // Done verifying the _required_ headers and optionally required headers.  if (isset($handshakeResponse)) {
      socket_write($user->socket,$handshakeResponse,strlen($handshakeResponse));
      $this->disconnect($user->socket);
      return;
    }
    $user->headers = $headers;
    $user->handshake = $buffer;
    $webSocketKeyHash = sha1($headers['sec-websocket-key'] . $magicGUID);
    $rawToken = "";
    for ($i = 0; $i < 20; $i++) {
      $rawToken .= chr(hexdec(substr($webSocketKeyHash,$i*2, 2)));
    }
    $handshakeToken = base64_encode($rawToken) . "\r\n";
    $subProtocol = (isset($headers['sec-websocket-protocol'])) ? $this->processProtocol($headers['sec-websocket-protocol']) : "";
    $extensions = (isset($headers['sec-websocket-extensions'])) ? $this->processExtensions($headers['sec-websocket-extensions']) : "";
    $handshakeResponse = "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: $handshakeToken$subProtocol$extensions\r\n";
    socket_write($user->socket,$handshakeResponse,strlen($handshakeResponse));
    $this->connected($user);
  }
  protected function checkHost($hostName) {
    return true; // Override and return false if the host is not one that you would expect.  // Ex: You only want to accept hosts from the my-domain.com domain,  // but you receive a host from malicious-site.com instead.  }
  protected function checkOrigin($origin) {
    return true; // Override and return false if the origin is not one that you would expect.  }
  protected function checkWebsocProtocol($protocol) {
    return true; // Override and return false if a protocol is not found that you would expect.  }
  protected function checkWebsocExtensions($extensions) {
    return true; // Override and return false if an extension is not found that you would expect.  }
  protected function processProtocol($protocol) {
    return ""; // return either "Sec-WebSocket-Protocol: SelectedProtocolFromClientList\r\n" or return an empty string.  // The carriage return/newline combo must appear at the end of a non-empty string, and must not  // appear at the beginning of the string nor in an otherwise empty string, or it will be considered part of  // the response body, which will trigger an error in the client as it will not be formatted correctly.  }
  protected function processExtensions($extensions) {
    return ""; // return either "Sec-WebSocket-Extensions: SelectedExtensions\r\n" or return an empty string.  }
  protected function getUserBySocket($socket) {
    foreach ($this->users as $user) {
      if ($user->socket == $socket) {
        return $user;
      }
    }
    return null;
  }
  public function stdout($message) {
    if ($this->interactive) {
      //echo "$message\n";  }
  }
  public function stderr($message) {
    if ($this->interactive) {
      //echo "$message\n";  }
  }
  protected function frame($message, $user, $messageType='text', $messageContinues=false) {
    switch ($messageType) {
      case 'continuous':
        $b1 = 0;
        break;
      case 'text':
        $b1 = ($user->sendingContinuous) ? 0 : 1;
        break;
      case 'binary':
        $b1 = ($user->sendingContinuous) ? 0 : 2;
        break;
      case 'close':
        $b1 = 8;
        break;
      case 'ping':
        $b1 = 9;
        break;
      case 'pong':
        $b1 = 10;
        break;
    }
    if ($messageContinues) {
      $user->sendingContinuous = true;
    }else {
      $b1 += 128;
      $user->sendingContinuous = false;
    }
    $length = strlen($message);
    $lengthField = "";
    if ($length < 126) {
      $b2 = $length;
    }elseif ($length < 65536) {
      $b2 = 126;
      $hexLength = dechex($length);
      //$this->stdout("Hex Length: $hexLength");  if (strlen($hexLength)%2 == 1) {
        $hexLength = '0' . $hexLength;
      } 
      $n = strlen($hexLength) - 2;
      for ($i = $n; $i >= 0; $i=$i-2) {
        $lengthField = chr(hexdec(substr($hexLength, $i, 2))) . $lengthField;
      }
      while (strlen($lengthField) < 2) {
        $lengthField = chr(0) . $lengthField;
      }
    }else {
      $b2 = 127;
      $hexLength = dechex($length);
      if (strlen($hexLength)%2 == 1) {
        $hexLength = '0' . $hexLength;
      } 
      $n = strlen($hexLength) - 2;
      for ($i = $n; $i >= 0; $i=$i-2) {
        $lengthField = chr(hexdec(substr($hexLength, $i, 2))) . $lengthField;
      }
      while (strlen($lengthField) < 8) {
        $lengthField = chr(0) . $lengthField;
      }
    }
    return chr($b1) . chr($b2) . $lengthField . $message;
  } 
  //check packet if he have more than one frame and process each frame individually  protected function split_packet($length,$packet, $user) {
    //add PartialPacket and calculate the new $length  if ($user->handlingPartialPacket) {
      $packet = $user->partialBuffer . $packet;
      $user->handlingPartialPacket = false;
      $length=strlen($packet);
    }
    $fullpacket=$packet;
    $frame_pos=0;
    $frame_id=1;
    while($frame_pos<$length) {
      $headers = $this->extractHeaders($packet);
      $headers_size = $this->calcoffset($headers);
      $framesize=$headers['length']+$headers_size;     
      //split frame from packet and process it  $frame=substr($fullpacket,$frame_pos,$framesize);
      if (($message = $this->deframe($frame, $user,$headers)) !== FALSE) {
        if ($user->hasSentClose) {
          $this->disconnect($user->socket);
        } else {
        // if ((preg_match('//u', $message)) || ($headers['opcode']==2)) {  //$this->stdout("Text msg encoded UTF-8 or Binary msg\n".$message);  $this->process($user, $message);
          /*} else {  $this->stderr("not UTF-8\n");  }*/  }
      } 
      //get the new position also modify packet data  $frame_pos+=$framesize;
      $packet=substr($fullpacket,$frame_pos);
      $frame_id++;
    }
  }
  protected function calcoffset($headers) {
    $offset = 2;
    if ($headers['hasmask']) {
      $offset += 4;
    }
    if ($headers['length'] > 65535) {
      $offset += 8;
    } elseif ($headers['length'] > 125) {
      $offset += 2;
    }
    return $offset;
  }
  protected function deframe($message, &$user) {
    //echo $this->strtohex($message);  $headers = $this->extractHeaders($message);
    $pongReply = false;
    $willClose = false;
    switch($headers['opcode']) {
      case 0:
      case 1:
      case 2:
        break;
      case 8:
        // todo: close the connection  $user->hasSentClose = true;
        return "";
      case 9:
        $pongReply = true;
      case 10:
        break;
      default:
        //$this->disconnect($user); // todo: fail connection  $willClose = true;
        break;
    }
    /* Deal by split_packet() as now deframe() do only one frame at a time.  if ($user->handlingPartialPacket) {  $message = $user->partialBuffer . $message;  $user->handlingPartialPacket = false;  return $this->deframe($message, $user);  }  */  if ($this->checkRSVBits($headers,$user)) {
      return false;
    }
    if ($willClose) {
      // todo: fail the connection  return false;
    }
    $payload = $user->partialMessage . $this->extractPayload($message,$headers);
    if ($pongReply) {
      $reply = $this->frame($payload,$user,'pong');
      socket_write($user->socket,$reply,strlen($reply));
      return false;
    }
    if ($headers['length'] > strlen($this->applyMask($headers,$payload))) {
        $user->handlingPartialPacket = true;
        $user->partialBuffer = $message;
        return false;
    }
    $payload = $this->applyMask($headers,$payload);
    if ($headers['fin']) {
      $user->partialMessage = "";
      return $payload;
    }
    $user->partialMessage = $payload;
    return false;
  }
  protected function extractHeaders($message) {
    $header = array('fin' => $message[0] & chr(128),
            'rsv1' => $message[0] & chr(64),
            'rsv2' => $message[0] & chr(32),
            'rsv3' => $message[0] & chr(16),
            'opcode' => ord($message[0]) & 15,
            'hasmask' => $message[1] & chr(128),
            'length' => 0,
            'mask' => "");
    $header['length'] = (ord($message[1]) >= 128) ? ord($message[1]) - 128 : ord($message[1]);
    if ($header['length'] == 126) {
      if ($header['hasmask']) {
        $header['mask'] = $message[4] . $message[5] . $message[6] . $message[7];
      }
      $header['length'] = ord($message[2]) * 256 
                + ord($message[3]);
    }elseif ($header['length'] == 127) {
      if ($header['hasmask']) {
        $header['mask'] = $message[10] . $message[11] . $message[12] . $message[13];
      }
      $header['length'] = ord($message[2]) * 65536 * 65536 * 65536 * 256 
                + ord($message[3]) * 65536 * 65536 * 65536
                + ord($message[4]) * 65536 * 65536 * 256
                + ord($message[5]) * 65536 * 65536
                + ord($message[6]) * 65536 * 256
                + ord($message[7]) * 65536 
                + ord($message[8]) * 256
                + ord($message[9]);
    }elseif ($header['hasmask']) {
      $header['mask'] = $message[2] . $message[3] . $message[4] . $message[5];
    }
    //echo $this->strtohex($message);  //$this->printHeaders($header);  return $header;
  }
  protected function extractPayload($message,$headers) {
    $offset = 2;
    if ($headers['hasmask']) {
      $offset += 4;
    }
    if ($headers['length'] > 65535) {
      $offset += 8;
    }elseif ($headers['length'] > 125) {
      $offset += 2;
    }
    return substr($message,$offset);
  }
  protected function applyMask($headers,$payload) {
    $effectiveMask = "";
    if ($headers['hasmask']) {
      $mask = $headers['mask'];
    }else {
      return $payload;
    }
    while (strlen($effectiveMask) < strlen($payload)) {
      $effectiveMask .= $mask;
    }
    while (strlen($effectiveMask) > strlen($payload)) {
      $effectiveMask = substr($effectiveMask,0,-1);
    }
    return $effectiveMask ^ $payload;
  }
  protected function checkRSVBits($headers,$user) { // override this method if you are using an extension where the RSV bits are used.  if (ord($headers['rsv1']) + ord($headers['rsv2']) + ord($headers['rsv3']) > 0) {
      //$this->disconnect($user); // todo: fail connection  return true;
    }
    return false;
  }
  protected function strtohex($str) {
    $strout = "";
    for ($i = 0; $i < strlen($str); $i++) {
      $strout .= (ord($str[$i])<16) ? "0" . dechex(ord($str[$i])) : dechex(ord($str[$i]));
      $strout .= " ";
      if ($i%32 == 7) {
        $strout .= ": ";
      }
      if ($i%32 == 15) {
        $strout .= ": ";
      }
      if ($i%32 == 23) {
        $strout .= ": ";
      }
      if ($i%32 == 31) {
        $strout .= "\n";
      }
    }
    return $strout . "\n";
  }
  protected function printHeaders($headers) {
    //echo "Array\n(\n";  foreach ($headers as $key => $value) {
      if ($key == 'length' || $key == 'opcode') {
        //echo "\t[$key] => $value\n\n";  }else {
        //echo "\t[$key] => ".$this->strtohex($value)."\n";  }
    }
    //echo ")\n";  }
}

testwebsock.php

#!/usr/bin/env php
require_once(__DIR__.DIRECTORY_SEPARATOR.'daemon.class.php');
require_once(__DIR__.DIRECTORY_SEPARATOR.'websockets.php');
class echoServer extends WebSocketServer {
  //protected $maxBufferSize = 1048576; //1MB... overkill for an echo server, but potentially plausible for other applications.  protected $starttime ;
  protected function process ($user, $message) {
    //$this->send($user,$message);  // if ('send_type' == substr($message,0,9)){//表示发送的内容是包含send_type的字符串  if ($user ->handshake == "TCP"){//表示发送的内容是包含send_type的字符串  $message = substr($message,0,strlen($message)-2) ;
          //echo $message."\n" ;  $this->send1($user,$message);
      }else{
          if (false !== strpos($message, 'filename=')) {
              $this ->starttime = explode(' ',microtime());
              parse_str($message,$msg);//将字符串分割成数组  $user ->clientFileName = $msg['filename'];
              $user ->fileSize = $msg['filesize'];
              $user ->serverFileName = $this->saveFile($user ->clientFileName);
              $user ->fileHandler = fopen($user ->serverFileName,"a+"); //打开文件准备以追加的方式  chown($user ->serverFileName,'apache') ; //修改文件所属用户  chgrp($user ->serverFileName,'apache') ; //修改文件所属租组  } else if(!empty($user ->fileHandler) && !empty($user ->serverFileName)){
              $this ->saveFileContent($user ->fileHandler, $message);
              $user ->recLength += strlen($message);
              //$this->send($user,$user ->recLength);  $this->send($user,json_encode(array('recLength' => $user ->recLength ,'serverFN' => basename($user ->serverFileName))));
              if($user ->recLength >= $user ->fileSize){
                  fclose($user ->fileHandler); //关闭文件  /* echo "fclose file recLength:".$user ->recLength."\n" ;  $endtime = explode(' ',microtime());  $thistime = $endtime[0]+$endtime[1]-($this ->starttime[0]+$this ->starttime[1]);  $thistime = round($thistime,3);  echo "run time long: ".$thistime." seconds".time();  $this->disconnect($user) ;*/  }
          }
      }
  }  
  protected function connected ($user) {
    // Do nothing: This is just an echo server, there's no need to track the user.  // However, if we did care about the users, we would probably have a cookie to  // parse at this step, would be looking them up in permanent storage, etc.  }
  protected function closed ($user) {
    // Do nothing: This is where cleanup would go, in case the user had any sort of  // open files or other objects associated with them. This runs after the socket  // has been closed, so there is no need to clean up the socket itself here.  }
      //用户加入或client发送信息  protected function send1($user,$msg){
        //将查询字符串解析到第二个参数变量中，以数组的形式保存如：parse_str("name=Bill&age=60",$arr)  parse_str($msg,$g);
        $ar=array();
        if(isset($g['status'])&&isset($g['command'])){
            $ar['command']=$g['command'];
            $ar['status']=$g['status'];
            $ar['swdid']=$g['swdid'];
        }else if(isset($g['command'])){
            $ar['command']=$g['command'];
            $ar['swdid']=$g['swdid'];
        }
        //推送信息  //$this->send2($user,$ar);  $this->send2($ar);
    }
    //$k 发信息人的socketID $key接受人的 socketID ，根据这个socketID可以查找相应的client进行消息推送，即指定client进行发送  protected function send2($ar){
        $ar['time']=date('m-d H:i:s');
        $users=$this->users;
        //给除了自己以外的用户发消息  foreach($users as $k => $v){
            //if($v != $user){  $this->send($v,json_encode($ar));
            //}  }
    }
//生成唯一uuid文件名称  protected function uuid($prefix = '')
    {
        $chars = md5(uniqid(mt_rand(), true));
        $uuid  = substr($chars,0,8) . '-';
        $uuid .= substr($chars,8,4) . '-';
        $uuid .= substr($chars,12,4) . '-';
        $uuid .= substr($chars,16,4) . '-';
        $uuid .= substr($chars,20,12);
        return $prefix . $uuid;
    }
    //保存文件名到指定路径  /* protected function saveFile($filename){  if(!is_dir("./uploads/")){  mkdir("./uploads/");  }  $update_path = './uploads/';  $exe = substr($filename, strrpos($filename, '.'));  $exe = $exe == '.jpeg' ? '.jpg' : $exe;  $fileNewName = $this->uuid() . $exe;  $path = $update_path . $fileNewName;  return $path ;  }*/  //保存文件名到指定路径  protected function saveFile($filename){
        if(!is_dir("/var/www/newpro/application/admin/app/storage/uploads/")){
            mkdir("/var/www/newpro/application/admin/app/storage/uploads/");
        }
        $update_path = '/var/www/newpro/application/admin/app/storage/uploads/';
        $exe = substr($filename, strrpos($filename, '.'));
        $exe = $exe == '.jpeg' ? '.jpg' : $exe;
        $fileNewName = $this->uuid() . $exe;
        $path = $update_path . $fileNewName;
        return $path ;
    }
    //保存文件内容  protected function saveFileContent($newFile,$content){
        fwrite($newFile,$content); //写入二进制流到文件  }
}
/*  * 当前操作系统为linux时，启动linux守护进程*/ if (strtoupper(substr(PHP_OS, 0, 5)) === 'LINUX') {
    $daemon = new daemon() ;
    $daemon -> init();
}
$echo = new echoServer("0.0.0.0","4000");
try {
    $echo->run();
}
catch (Exception $e) {
  $echo->stdout($e->getMessage());
}


php socket client:
socket_client.php
// 建立客户端的socet连接 $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
//连接服务器端socket $connection = socket_connect($socket, '10.0.1.101', 4000)or die("Could not create socket\n"); // 创建一个Socket; Log::info("connection 10.0.1.101:4000 is:".$connection) ;
//要发送到服务端的信息。 $send_data = "status={$active}&command={$command}&swdid={$swdid}";
socket_write($socket, "$send_data\n\n")or die("Write failed\n");// 数据传送 向服务器发送消息 Log::info("Write successful.") ;
/*$buff = @socket_read($socket, 1024, 1) ; Log::info("Socket response was:" . $buff . "\n");*/ socket_close($socket);