Network Stuff (easy socket v3)

/*
Copyright (C) 2004 Jacquelin POTIER <jacquelin.potier@free.fr>
Dynamic aspect ratio code Copyright (C) 2004 Jacquelin POTIER <jacquelin.potier@free.fr>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
using System;

public class Cmultiple_elements_parsing
{
    /// <summary>
    /// parse multiple ushort splitted by ; or using ushort1-ushort2 to get all value from ushort1 to ushort2
    /// </summary>
    /// <param name="text"></param>
    /// <returns></returns>
    public static ushort[] Parse_ushort(string text)
    {
        System.Collections.ArrayList al=new System.Collections.ArrayList();
        string[] str_array=text.Split(";".ToCharArray());
        string[] str_array2;
        int pos_minus;
        ushort min;
        ushort max;
        ushort us_cpt2;
        try
        {
            for (int cpt=0;cpt<str_array.Length;cpt++)
            {
                if (str_array[cpt]=="")
                    continue;
                pos_minus=str_array[cpt].IndexOf("-");
                if (pos_minus>=0)
                {
                    str_array2=str_array[cpt].Split("-".ToCharArray());
                    min=System.Convert.ToUInt16(str_array2[0]);
                    max=System.Convert.ToUInt16(str_array2[1]);
                    if (min>max)
                        throw new System.Exception("Error min value is upper than max value");
                    for (us_cpt2=min;us_cpt2<=max;us_cpt2++)
                    {
                        al.Add(System.Convert.ToUInt16(us_cpt2));
                    }
                }
                else
                    al.Add(System.Convert.ToUInt16(str_array[cpt]));
            }
            return (ushort[])al.ToArray(typeof(ushort));
        }
        catch(Exception e)
        {
            System.Windows.Forms.MessageBox.Show(e.Message,
                "Error",
                System.Windows.Forms.MessageBoxButtons.OK,
                System.Windows.Forms.MessageBoxIcon.Error);
            return null;
        }
    }
    /// <summary>
    /// parse multiple ip splitted by ; or using ip1-ip2 to get all value from ip1 to ip2
    /// </summary>
    /// <param name="text"></param>
    /// <returns></returns>
    public static string[] Parse_ip(string text)
    {
        System.Collections.ArrayList al=new System.Collections.ArrayList();
        string[] str_array=text.Split(";".ToCharArray());
        string[] str_array2;
        int pos_minus;
        UInt32 min;
        UInt32 max;
        UInt32 ui_cpt2;
        try
        {
            for (int cpt=0;cpt<str_array.Length;cpt++)
            {
                if (str_array[cpt]=="")
                    continue;
                pos_minus=str_array[cpt].IndexOf("-");
                if (pos_minus>=0)
                {
                    str_array2=str_array[cpt].Split("-".ToCharArray());

                    min=(UInt32)System.Net.IPAddress.Parse(str_array2[0]).Address;
                    min=easy_socket.network_convert.switch_UInt32(min);
                    max=(UInt32)System.Net.IPAddress.Parse(str_array2[1]).Address;
                    max=easy_socket.network_convert.switch_UInt32(max);
                    if (min>max)
                        throw new System.Exception("Error min value is upper than max value");
                    for (ui_cpt2=min;ui_cpt2<=max;ui_cpt2++)
                    {
                        al.Add((new System.Net.IPAddress(easy_socket.network_convert.switch_UInt32(ui_cpt2))).ToString());
                    }
                }
                else
                    al.Add(str_array[cpt]);
            }
            return (string[])al.ToArray(typeof(string));
        }
        catch(Exception e)
        {
            System.Windows.Forms.MessageBox.Show(e.Message,
                "Error",
                System.Windows.Forms.MessageBoxButtons.OK,
                System.Windows.Forms.MessageBoxIcon.Error);
            return null;
        }
    }
    
    /// <summary>
    /// parse ip:port to return an CHost
    /// </summary>
    /// <param name="text"></param>
    /// <returns></returns>
    public static CHost Parse_IP_two_points_Port(string text)
    {
        try
        {
            if (text=="")
                return null;
            string[] array=text.Split(':');
            if (array.Length!=2)
                throw new Exception("Format must be like 127.0.0.1:80 \r\nCurrently it's \""+text+"\"");
            return new CHost(array[0].Trim(),System.Convert.ToUInt16(array[1].Trim()));
        }
        catch(Exception e)
        {
            System.Windows.Forms.MessageBox.Show(e.Message,
                "Error",
                System.Windows.Forms.MessageBoxButtons.OK,
                System.Windows.Forms.MessageBoxIcon.Error);
            return null;
        }
    }
}
public class CHost
{
    public string ip="127.0.0.1";
    public ushort port=80;
    public CHost(string ip,ushort port)
    {
        this.ip=ip;
        this.port=port;
    }
    /*
    public static bool operator ==(CHost x, CHost y)
    {
        if ((x.ip==y.ip)&&(x.port==y.port))
            return true;
        return false;
    }
    public static bool operator !=(CHost x, CHost y)
    {
        return !(x==y);
    }
    */
}