sockets - PHP: write_socket() giving unexpected warning -


i'm trying set websocket application, i'm stuck @ following. after accepting socket received client's headers expected, when try send upgrade socket_write() throws warning:

warning: socket_write(): unable write socket [10038]: operation attempted on not socket

this happens in following piece of code:

var_dump($this->socket); //output: resource(2) of type (socket) socket_write($this->socket, $upgrade);

this happens inside pthreads context.
possible reasons php throwing me warning?

the full code:

public function handshake($headers) {     main::console($headers);     main::console("getting client websocket version...");     main::console("headers: \r\n\r\n".$headers);     if(preg_match("/sec-websocket-version: (.*)\r\n/", $headers, $match))         $version = $match[1];     else {         main::console("the client doesn't support websocket");         return false;     }      main::console("client websocket version {$version}, (required: 13)");     if($version == 13) {         // extract header variables         main::console("getting headers...");         if(preg_match("/get (.*) http/", $headers, $match))             $root = $match[1];         if(preg_match("/host: (.*)\r\n/", $headers, $match))             $host = $match[1];         if(preg_match("/origin: (.*)\r\n/", $headers, $match))             $origin = $match[1];         if(preg_match("/sec-websocket-key: (.*)\r\n/", $headers, $match))             $key = $match[1];          main::console("client headers are:\r\n\r\n".                         "- root: ".$root."\r\n".                         "- host: ".$host."\r\n".                         "- origin: ".$origin."\r\n".                         "- sec-websocket-key: ".$key."\n");          main::console("generating sec-websocket-accept key...");         $acceptkey = $key.'258eafa5-e914-47da-95ca-c5ab0dc85b11';         $acceptkey = base64_encode(sha1($acceptkey, true));          $upgrade = "http/1.1 101 switching protocols\r\n".                    "upgrade: websocket\r\n".                    "connection: upgrade\r\n".                    "sec-websocket-accept: $acceptkey".                    "\r\n\r\n";          main::console("sending response client #{$this->getid()}:\r\n\r\n".$upgrade);         var_dump($this->socket);         socket_write($this->socket, $upgrade, strlen($upgrade));         $this->sethandshake(true);         main::console("handshake done!");         return true;     }     else {         main::console("websocket version 13 required (the client supports version {$version})");         return false;     } }  public function run() { while($this->alive) {     $bytes = @socket_recv($this->socket, $buffer, 4096, msg_waitall);     if ($buffer)         {         if(!$this->handshake)         {             $this->handshake($buffer);         } else {             main::console("client {$this->getid()} says {$buffer}");         }     } }

}

try socket_last_error() , socket_strerror() more information. if doesn't help, show how socket created. source: http://www.php.net/manual/en/function.socket-last-error.php


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