//-----------------------------------------------------------------------
//  This file is part of the Microsoft .NET Framework SDK Code Samples.
// 
//  Copyright (C) Microsoft Corporation.  All rights reserved.
// 
//This source code is intended only as a supplement to Microsoft
//Development Tools and/or on-line documentation.  See these other
//materials for detailed information regarding Microsoft code samples.
// 
//THIS CODE AND INFORMATION ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY
//KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
//IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//PARTICULAR PURPOSE.
//-----------------------------------------------------------------------

using System;
using System.Net;
using System.IO;
using System.Text;
namespace Microsoft.Samples.QuickStart.HowTo.Net.WebRequests
{
    static class ClientWebErrorHandler 
	{		
		public static void Main(string[] args) 
        {
            bool resolvedUri = false;
            String uriToResolve = null;

            while ( !resolvedUri ) 
            {
                WebResponse response = null;
                StreamReader reader = null;
                try
                {
                    //Get a uri from the user
                    Console.Write("Please enter the URI to resolve: ");
                    uriToResolve = Console.ReadLine();
                    Console.WriteLine();

                    //Create the request object
                    WebRequest request = WebRequest.Create(uriToResolve);

                    request.Credentials = new NetworkCredential("invaliduser", "invalidpassword");

                    //Create the response object
                    response = request.GetResponse();
                    Console.WriteLine("URI Resolved");

                    //Successfully resolved the Uri
                    resolvedUri = true;

                    //Get a readable stream from the server
                    Stream receiveStream = response.GetResponseStream();
                    reader = new StreamReader(receiveStream);
                    Console.WriteLine("\r\nResponse stream received");
                    Char[] buffer = new Char[256];
                    int count = reader.Read(buffer, 0, buffer.Length);

                    Console.WriteLine("HTML...\r\n");
                    while (count > 0)
                    {
                        Console.Write(new String(buffer, 0, count));
                        count = reader.Read(buffer, 0, buffer.Length);
                    }
                    Console.WriteLine("");

                }
                catch (WebException webException)
                {
                    // If you get to this point, the exception has been caught
                    Console.WriteLine("A WebException has been caught!");

                    // Write out the Exception message
                    Console.WriteLine(webException.ToString());

                    // Get the WebException status code
                    if (webException.Status == WebExceptionStatus.ProtocolError)
                    {
                        // Write out the WebResponse protocol status
                        Console.WriteLine("There was an error retrieving the URI");
                    }
                }
                catch (UriFormatException uriFormatException)
                {
                    // If you get to this point, the exception has been caught
                    Console.WriteLine("A UriFormatException has been caught!");

                    // Write out the Exception message
                    Console.WriteLine(uriFormatException.ToString());
                }
                finally
                {
                    if (response != null)
                        response.Close();
                    if (reader != null)
                        reader.Close();
                }
            }

            Console.WriteLine();
            Console.WriteLine("Press Enter to continue...");
            Console.ReadLine();
        }
    }
}