Task.Extract URLs from Text

using System;
class URLs
{
    static void Main()
    {
        string texiInput = "The site nakov.com can be access from http://nakov.com or www.nakov.com. It has subdomains like mail.nakov.com and svetlin.nakov.com. Please check http://blog.nakov.com for more information.";

        FindURL(texiInput);
    }
    static void FindURL(string textInput)
    {
        for (int i = 0; i < textInput.Length; i++)
        {
            if((textInput[i] == 'h' && textInput[i + 4] == ':')
                || (textInput[i] == 'w' && textInput[i + 1] == 'w' && textInput[i + 3] == '.'))
            {
                while(true)
                {//за да избегна точката накрая
                    if (textInput[i] == '.' && textInput[i + 4] == ' ')
                    {
                        break;
                    }
                    Console.Write(textInput[i]);
                    i++;
                }
                Console.WriteLine();
            }
        }
    }
}