Question

I have a socket server in php server.php

$master  = WebSocket("localhost",800);    
$sockets = array($master);
$users   = array();
$debug   = false;

function WebSocket($address,$port)
{
    $master=socket_create(AF_INET, SOCK_STREAM, SOL_TCP)     or die("socket_create() failed");
    socket_set_option($master, SOL_SOCKET, SO_REUSEADDR, 1)  or die("socket_option() failed");
    socket_bind($master, $address, $port)                    or die("socket_bind() failed");
    socket_listen($master,20)                                or die("socket_listen() failed");
    echo "Server Started : ".date('Y-m-d H:i:s')."\n";
    echo "Master socket  : ".$master."\n";
    echo "Listening on   : ".$address." port ".$port."\n\n";
    return $master;
}

On my command line, I did

sudo chmod 777 /socket/websocket/server.php

then

php -q /socket/server.php trying to bring it up. 

then there’s an error,

Warning: socket_bind(): unable to bind address [13]: Permission denied in /socket/websocket/server.php on line 60

line 60 is

socket_bind($master, $address, $port)                    or die("socket_bind() failed");
$master=id+4
$address=localhost
$port=800

I mean I already chmoded that file into 777, why still unable to bindaddress for the socket server file?

If I changed port address to 12345. then new error would say

Warning: socket_bind(): unable to bind address [48]: Address already in use in /socket/websocket/server.php on line 67

Answer 1

Try a port number greater than 1024, on most systems ports below that require root privileges.