<?php

// PHP's procedural sockets suck.  This is somewhat better.

class SocketError extends Exception
{
    public $errno;
    public $text;
    
    public function __construct($errno=null, $text=null)
    {
        if($errno == null)
        {
            $errno = socket_last_error();
            $text = socket_strerror($errno);
        }
        
        $this->errno = $errno;
        $this->text = $text;
    }
    
    public function __toString()
    {
        return sprintf("%s: (%s, %s)", get_class($this), $this->errno, $this->text);
    }
}

class Socket
{
    private $sock;
    
    public function __construct($domain=AF_INET, $type=SOCK_STREAM, $proto=SOL_TCP)
    {
        $this->sock = socket_create($domain, $type, $proto);
        
        if($this->sock === null)
        {
            throw new SocketError();
        }
    }
    
    public function __call($method, $args)
    {
        $func = sprintf('socket_%s', $method);
        if(function_exists($func))
        {
            array_unshift($args, $this->sock);
            $ret = call_user_func_array($func, $args);
            
            if($ret === false)
            {
                throw new SocketError();
            }
            else
            {
                return $ret;
            }
        }
        else
        {
            throw new Exception(sprintf("method %s::%s does not exist", get_class($this), $method));
        }
    }
    
    public function getsockname()
    {
        $host = "";
        $port = -1;
        
        socket_getsockname($this->sock, &$host, &$port);
        
        return array($host, $port);
    }
    
    public function getpeername()
    {
        $host = "";
        $port = -1;
        
        socket_getpeername($this->sock, &$host, &$port);
        
        return array($host, $port);
    }
}