PHP sockets from remote host

[Kalphiter]

I am having trouble operating this code.

<?php
ob_end_flush();
ob_implicit_flush(true);
set_time_limit(0);

function consoleEcho($msg, $DontShowDate = 0)
{
    if(!$DontShowDate)
	$date = "[". date('m/d H:i:s'). "] ";
    $msg = $date . $msg;
    print($msg ."\n");
}

class client
{
    public $sock;
    public $ipaddr;
    public $chatServer;
    public $uid;
    function sendMessage($msg)
    {
	socket_write($client[$i]->sock, $msg . chr(0));
    }

    function serverMessage($msg)
    {
	socket_write($client[$i]->sock, $msg . chr(0));
    }

    function privateMessage($from, $msg)
    {
	socket_write($client[$i]->sock, "PM\t". $from ."\t". $msg . chr(0));
    }

    function disconnect()
    {
	consoleEcho(get_class($i));
	socket_close($this->sock);
	$i = key($this);
	$this->chatServer->messageAll("Client ". $this->uid ." disconnected");
	consoleEcho("Client ". $this->uid ." disconnected");
	unset($this);
    }
}

class chat
{
    public $sock;
    public $client = array();
    function messageAll($msg)
    {
	$client =& $this->client;
	for($i = 0; $i < count($client); $i++)
	    @socket_write($client[$i]->sock, $msg . chr(0));
    }

    function getTotalClients()
    {
	
    }

    function start()
    {
	$host = "192.168.1.2";
	$port = 9999;
	$max = 500;
	$client =& $this->client;
	$sock =& socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("[". date('Y-m-d H:i:s') ."] Could not create socket\n");
	socket_bind($sock, $host, $port) or die("[". date('Y-m-d H:i:s'). "] Could not bind to socket\n");
	socket_listen($sock) or die("[". date('Y-m-d H:i:s') ."] Could not set up socket listener\n");
	consoleEcho("Server started on ". $host .":". $port ."\n\n");

	$beepExec = microtime();
	$f  = fopen("beepTime.txt", "w");
	fwrite($f, $beepExec);
	fclose($f);

	while(true)
	{
	    if($beepExec != file_get_contents("beepTime.txt"))
	    {
		$beepExec = microtime();
		$f  = fopen("beepTime.txt", "w");
		fwrite($f, $beepExec);
		fclose($f);

		$file = explode(" ", file_get_contents("beep.txt"));
		$this->messageAll("[beep.exe ". $file[0] ." ". $file[1] ."]");
		echo("Beep sent\n");
	    }
	    usleep(10000);
	    socket_set_block($sock);
	    $read[0] = $sock;

	    for($i = 0; $i < $max; $i++)
		if($client[$i]->sock != null)
		    $read[$i+1] = $client[$i]->sock;
	    $ready = @socket_select($read, $write = NULL, $except = NULL, 0.001);
	    if(in_array($sock, $read))
	    {
		for($i = 0;$i<$max;$i++)
		{
		    if($client[$i] == null)
		    {
			$client[$i] = new client();
			$client[$i]->chatServer = $this;
			$client[$i]->uid = $i;
		    }

		    if($client[$i]->sock == null)
		    {
			if(($client[$i]->sock = socket_accept($sock)) < 0)
			{
			    consoleEcho("socket_accept() failed: ". socket_strerror($client[$i]->sock));
			}

			else
			{
			    socket_getpeername($client[$i]->sock, $client[$i]->ipaddr);
			    if($i == $max - 1)
		 	    {
				consoleEcho("Too many clients");
				$client[$i]->disconnect();
			    }
			    consoleEcho("Connection #".$i." from ". $client[$i]->ipaddr);
			    //$this->messageAll("Client #".$i." connected");
//socket_write($client[$i]->sock, "[beep.exe 1000 1000]" . chr(0));
socket_write($client[$i]->sock, $client[$i]->ipaddr . chr(0));
			}
			break;
		    }
		}

		if(--$ready <= 0)
		    continue;
	    }

	    for($i=0;$i<$max;$i++)
	    {
		if(in_array($client[$i]->sock, $read))
		{
		    $input = @socket_read($client[$i]->sock, 1024);
		    //if($input == null)
			//$client[$i]->disconnect();

		    $n = trim($input);
		    $com = split(" ",$n);
		    if($n == "EXIT")
		    {
			if($client[$i]->sock != null)
			{
			    // Disconnect requested
			    $client[$i]->disconnect();
			    //socket_close($client[$i]->sock);
			    //unset($client[$i]->sock);
			    //consoleEcho("Disconnected(2) client #".$i);
			    //$this->messageAll("Client ". $i ." disconnected");

			    if($i == $adm)
				$adm = -1;
			}
		    }

		    else if($n == "TERM")
		    {
			// Server termination requested
			socket_close($sock);
			consoleEcho("Terminated server (requested by client #".$i.")");
			exit();
		    }

		    else if($input)
		    {
			if($n=="PING")
			{
			    socket_write($client[$i]->sock, "PONG". chr(0));
			}
		    }
		}

		else
		{
		    /*if($client[$i]->sock == null)
		    {
			// Close the socket
			socket_close($client[$i]->sock);
			unset($client[$i]);
			consoleEcho("Disconnected(1) client #".$i);
		    }*/
		}
	    }
	}
	socket_close($sock);
    }
}

$chat = new chat();
$chat->start();
?>

I can connect to my server on 192.168.1.2 easily from my computer on 192.168.1.3 (connecting through kalphiter.com:9999). The only issue is that the socket server says the connecting IP address is 192.168.1.1.

That's not a major issue, but I have an even bigger issue because the connection is reset immediately when I connect from school. I have opened the firewall on the server using "ufw allow 9999". What's odd is that the server reports that it received a connection.

I am using Ubuntu 9.10.

[Kalphiter]

$host should be "0" to work outside of the LAN.

[coolcurrent4u]

Hello, did you find solution to your problem, am having the same problem

[Kalphiter]

I found it my school was blocking the port, but if it helps I changed the host to "0".