Warning: socket_bind() [function.socket-bind]: unable to bind address [0]:

[Wanderlei Silva]

Hi,

 

I am trying to open up a socket on an XAMP installation (Windows XP host) but keep receiving the following error:

 

Warning: socket_bind() [function.socket-bind]: unable to bind address [0]: Only one usage of each socket address (protocol/network address/port) is normally permitted. in C:\xampp\htdocs\submitscore.php on line 33

Only one usage of each socket address (protocol/network address/port) is normally permitted.

 

And this is the code:

<?php

define("SOCK_PORT", 8080);
define("SQL_HOST", "127.0.0.1");
define("SQL_USER", "root");
define("SQL_PASS", "");
define("SQL_DBASE", "my_db");


// Add Data function, takes data in form gameid.playerid.score and stores it in MySQL table 'scores'
function add_data( $data )
{
global $mysql;

// Parse $data
list($gameid, $playerid, $score) = explode(".", $data);

// Construct SQL Query
$sql = "INSERT INTO scores(gameid, playerid, score) VALUES(${gameid}, ${playerid}, ${score})";

// Run SQL Query
mysql_query( $sql, $mysql ) or die(mysql_error());
}

// Open MySQL and Select Database
$mysql = mysql_connect(SQL_HOST, SQL_USER, SQL_PASS) or die(mysql_error());
mysql_select_db(SQL_DBASE, $mysql) or die(mysql_error());

// Open UDP Socket
$sock = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP ) or die(socket_strerror(socket_last_error($sock)));

// Bind Socket to SOCK_PORT on '0.0.0.0'
socket_bind( $sock, '0.0.0.0', SOCK_PORT ) or die(socket_strerror(socket_last_error($sock)));
//socket_bind( $sock, '127.0.0.1', SOCK_PORT ) or die(socket_strerror(socket_last_error($sock)));

// Set Socket to Blocking
socket_set_block( $sock ) or die(socket_strerror(socket_last_error($sock)));

// Loop forever, waiting for connections


while(TRUE) {
// Get first 65536 bytes from Socket and store as $buf (also get $clientip and $clientport)
socket_recvfrom( $sock, $buf, 65535, 0, $clientip, $clientport ) or die(socket_strerror(socket_last_error($sock)));

// Run add_data function on the data recieved from socket
add_data( $buf );
}

// Never Should reach here, but if it is changed to shut down: Close the socket & mysql gracefully
socket_close( $sock );
mysql_close( $mysql );


?> 

 

I figure using Port 8080 would be fine? I then I would enter the games score by passing it through the URL:

 

http://localhost/submitscore.php:8080

 

But when I try to load the page, I keep on getting the error at the top.

 

Could anyone provide a solution?

 

 

 

 

 

 

[iarp]

<?php
// Bind Socket to SOCK_PORT on '0.0.0.0'
//socket_bind( $sock, '0.0.0.0', SOCK_PORT ) or die(socket_strerror(socket_last_error($sock))); ## Comment out this line
socket_bind( $sock, '127.0.0.1', SOCK_PORT ) or die(socket_strerror(socket_last_error($sock))); ## Uncomment this line
?>

 

Future Use: The original uncommented line was trying to use the ip address 0.0.0.0 instead of loopback 127.0.0.1 (as per the commented line)

[Wanderlei Silva]

Yes, I've tried that and it is still giing me the exact same error.

 

Do I need to configure Apache or anything?

 

The URLs I am attempting to view in my browser are:

 

https://127.0.0.1/submitscore.php

http://127.0.0.1/submitscore.php

http://localhost/submitscore:8080

http://127.0.0.1/script.php?d=11.22.33

 

But all give :

 

Warning: socket_bind() [function.socket-bind]: unable to bind address [0]: Only one usage of each socket address (protocol/network address/port) is normally permitted. in C:\xampp\htdocs\submitscore.php on line 33

Only one usage of each socket address (protocol/network address/port) is normally permitted.

 

 

netstat - ban command does have:

 

UDP    0.0.0.0:8080          *:*                                    5752

[apache.exe]

showing

[iarp]

Have you tried changing define("SOCK_PORT", 8080); to straight 80 and leaving 127.0.0.1(my last post) the same?

[Wanderlei Silva]

Thanks for the help iarp

 

I have just tried changing ports to port 80 and the exact same error is occurring.

 

I have added an echo to show the contents of the $sock variable, showing:

 

// Open MySQL and Select Database
$mysql = mysql_connect(SQL_HOST, SQL_USER, SQL_PASS) or die(mysql_error());
mysql_select_db(SQL_DBASE, $mysql) or die(mysql_error());

// Open UDP Socket
$sock = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP ) or die(socket_strerror(socket_last_error($sock)));


///////////////////////
echo $sock;
/////////////////////

// Bind Socket to SOCK_PORT on '0.0.0.0'
//socket_bind( $sock, '0.0.0.0', SOCK_PORT ) or die(socket_strerror(socket_last_error($sock)));
socket_bind( $sock, '127.0.0.1', SOCK_PORT ) or die(socket_strerror(socket_last_error($sock)));

echo $query;

// Set Socket to Blocking
socket_set_block( $sock ) or die(socket_strerror(socket_last_error($sock)));

 

The database and it's columns do exist inside phpmyadmin, I just cannot escape this error.

 

 

[Wanderlei Silva]

I have checked and

extension=php_sockets.dll

is un-commented inside php.ini