PHP Socket accept_connection hanging

[jessica14]

I recently found out that PHP not only has the fsock* functions, but also functions to create a server itself. I decided to experiment a little bit, and came up with this. Now, the problem is that it hangs on \[code\]accept_connection()\[/code\] (due to the fact that it's waiting for a connection.) I found out that the solution is to use \[code\]stream_set_blocking()\[/code\], which as you can see, I attempted, but to no avail.I am getting an error message, which reads:\[code\]Warning: socket_set_blocking(): supplied resource is not a valid stream resource in /home/insomniaque/workspace/PHP Socket RAT/rat.class.php on line 68\[/code\]I know that \[code\]accept_connection()\[/code\] was the problem earlier because when I would connect with a second connection, it would output the data.\[code\]<?php/* * Project: iRAT * * Created on Jan 11, 2010 * Written by Insomniaque * */class rat{ /** * Holds the PHP socket handle for use within the class. */ private $socket; /** * Holds an array of all the spawned sockets (child sockets) that were * created when a user connected to the server. */ private $spawns = array (); /** * Holds the maximum number of connections. */ private $maxconn; /** * Sets all of the variables required for the class and starts the socket. * Then it'll start looping, connecting clients and running commands. * * @access public * @param $port The port to bind. * @param $maxconn The maximum number of client connections. */ public function __construct($port = 0, $maxconn = 1) { /** * Check to see if the user has entered 0 as the port, and create a * random port, if so. */ if($port == 0) $this->port = rand(81, 8079); else $this->port = $port; /** * Save the maximum connection number. */ $this->maxconn = $maxconn; /** * Run our function to create the socket now. */ if(!$this->createSocket()) { echo "Failed creating or binding socket.\n"; return false; } else { echo "Socket has been created and binded.\n"; } /** * Turn non-blocking on so we can run multiple clients. */ socket_set_blocking($this->socket, 0); echo "Starting the data receiving loop.\n"; $this->startLoop(); return true; } /** * This function will create the socket for later use. * * @access private * @return bool Returns true if the socket was created successfully, * returns false if there was an error. */ private function createSocket() { /** * Create a socket of IPv4 type using the TCP gateway. */ $this->socket = socket_create(AF_INET, SOCK_STREAM, getprotobyname('tcp')); if(!$this->socket) return false; echo "Socket has been created.\n"; /** * Attempt to bind the socket to localhost:[port] */ do { if(!isset($i)) $i++; $port = $this->port; $bind = socket_bind($this->socket, 0, $port); if(!$bind) { $i++; $this->port = rand(79, 8079); } } while(!$bind && $i <= 5); if($i == 5) return false; echo "Port ".$this->port." has been binded to the RAT.\n"; return true; } /** * Start a loop running on our socket. We will check if we are getting * data, accept connections and run any commands. When the connection * is closed, we will return true. * * @access private * @return bool Returns false if the socket can't be listened to. Otherwise * returns true when the socket is closed. */ private function startLoop() { if(socket_listen($this->socket, 3)) { while(true) { if(($newspawn = socket_accept($this->socket)) !== false) { $this->spawns[] = $newspawn; echo "A new spawn has connected."; } else echo "No new socket"; sleep(1000); foreach($this->spawns as $key => $spawn) { $data = http://stackoverflow.com/questions/2046442/trim(socket_read($spawn, 1024)); if(strlen($data) > 0) { if($data =="exit") { socket_close($spawn); unset($this->spawns[$key]); echo "Spawn killed.\n"; } if($data =http://stackoverflow.com/questions/2046442/="kill") { foreach($this->spawns as $key => $spawn) { socket_close($spawn); unset($this->spawns[$key]); } socket_close($this->socket); echo "Socket closed.\n"; return true; } else { echo "Data: " . $data . "\n"; } } } } } else { echo "Failure receiving data.\n"; return false; } }}?>\[/code\]Thanks in advance,John