Providing authentication to connect to web server using HTTPwebrequest

Question

1.00/5 (1 vote)

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C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;

namespace ishant
{
  
class WebFetch
{
	static void Main(string[] args)
	{
		// used to build entire input
		StringBuilder sb  = new StringBuilder();

		// used on each read operation
		byte[]        buf = new byte[8192];

		// prepare the web page we will be asking for
		HttpWebRequest  request  = (HttpWebRequest)
        
			WebRequest.Create("http://www.google.com");
       
                  //GETTING ERROR CODE 407!
		// execute the request
		HttpWebResponse response = (HttpWebResponse)
			request.GetResponse();

		// we will read data via the response stream
		Stream resStream = response.GetResponseStream();

		string tempString = null;
		int    count      = 0;

		do
		{
			// fill the buffer with data
			count = resStream.Read(buf, 0, buf.Length);

			// make sure we read some data
			if (count != 0)
			{
				// translate from bytes to ASCII text
				tempString = Encoding.ASCII.GetString(buf, 0, count);

				// continue building the string
				sb.Append(tempString);
			}
		}
		while (count > 0); // any more data to read?

		// print out page source
		Console.WriteLine(sb.ToString());
	}
}

        
}

Posted 7-Jul-10 22:17pm

ishant7890

Updated 7-Jul-10 22:31pm

Tom Deketelaere

v2

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Comments

R. Giskard Reventlov 8-Jul-10 4:21am

Is there a question in there, somewhere?

ishant7890 8-Jul-10 4:23am

ya in bold,the thing is m using this code to access http,but its giving error code 407,proxy authentication.I know the system password and Id but how to supply it in the code?

1 solution

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Dylan Morley · Answer 1 · 2010-07-07T23:26:00

Proxy authentication required, so get the default IE settings you use and assign them to your WebRequest

C#

IWebProxy proxy = HttpWebRequest.DefaultWebProxy;
proxy.Credentials = CredentialCache.DefaultCredentials;

HttpWebRequest  request  = (HttpWebRequest)WebRequest.Create("http://www.google.com");
request.Proxy = proxy;

HttpWebResponse response = (HttpWebResponse)request.GetResponse();

* edit *

If you don't have default credentials on the machine that will be running the code, then you will need to supply some custom credentials

e.g

C#

IWebProxy proxy = HttpWebRequest.DefaultWebProxy;
NetworkCredential credentials = new NetworkCredential("UserName", "Password");
proxy.Credentials = credentials;

HttpWebRequest  request  = (HttpWebRequest)WebRequest.Create("http://www.google.com");
request.Proxy = proxy;

HttpWebResponse response = (HttpWebResponse)request.GetResponse();