Why Does My Basic Authentication Fail with a Server Closure Error, and How Can I Fix It Using ISO-8859-1 Encoding?

Troubleshooting Basic Authentication and Server Closure Errors

This article addresses a common problem encountered when using basic authentication with IIS: a server closure error. The root cause often lies in the encoding used for the authentication credentials.

Here's a code example demonstrating the solution:

<code class="language-csharp">CookieContainer myContainer = new CookieContainer();
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://telematicoprova.agenziadogane.it/TelematicoServiziDiUtilitaWeb/ServiziDiUtilitaAutServlet?UC=22&SC=1&ST=2");
string username = "abc";
string password = "123";
string encoded = Convert.ToBase64String(Encoding.GetEncoding("ISO-8859-1").GetBytes(username + ":" + password));
request.Headers.Add("Authorization", "Basic " + encoded);
request.CookieContainer = myContainer;
request.PreAuthenticate = true;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();</code>

The key to resolving the server closure error is using the correct encoding. While UTF-8 is frequently used, ISO-8859-1 is the appropriate encoding for basic authentication in this scenario. The updated code explicitly sets the encoding to ISO-8859-1, ensuring the authorization header is correctly formatted and preventing the server from closing the connection.

The above is the detailed content of Why Does My Basic Authentication Fail with a Server Closure Error, and How Can I Fix It Using ISO-8859-1 Encoding?. For more information, please follow other related articles on the PHP Chinese website!