Я создаю клиент-серверное приложение.
Код сервера:
public sealed class SslTcpServer {
static X509Certificate serverCertificate = null;
public static void RunServer(string certificate) {
serverCertificate = new X509Certificate2(certificate, "123", X509KeyStorageFlags.MachineKeySet);
TcpListener listener = new TcpListener(IPAddress.Parse("127.0.0.1"), 56748);
listener.Start();
while (true) {
Console.WriteLine("Waiting for a client to connect...");
TcpClient client = listener.AcceptTcpClient();
ProcessClient(client);
}
}
static void ProcessClient(TcpClient client) {
SslStream sslStream = new SslStream(client.GetStream());
try {
sslStream.AuthenticateAsServer(serverCertificate,
clientCertificateRequired: false,
checkCertificateRevocation: true);
sslStream.ReadTimeout = 5000;
sslStream.WriteTimeout = 5000;
Console.WriteLine("Waiting for client message...");
string messageData = ReadMessage(sslStream);
Console.WriteLine("Received: {0}", messageData);
byte[] message = Encoding.UTF8.GetBytes("Hello from the server.<EOF>");
Console.WriteLine("Sending hello message.");
sslStream.Write(message);
} catch (AuthenticationException e) {
Console.WriteLine("Exception: {0}", e.Message);
if (e.InnerException != null) {
Console.WriteLine("Inner exception: {0}", e.InnerException.Message);
}
Console.WriteLine("Authentication failed - closing the connection.");
sslStream.Close();
client.Close();
return;
} finally {
sslStream.Close();
client.Close();
}
}
static string ReadMessage(SslStream sslStream) {
byte[] buffer = new byte[2048];
StringBuilder messageData = new StringBuilder();
int bytes = -1;
do {
bytes = sslStream.Read(buffer, 0, buffer.Length);
Decoder decoder = Encoding.UTF8.GetDecoder();
char[] chars = new char[decoder.GetCharCount(buffer, 0, bytes)];
decoder.GetChars(buffer, 0, bytes, chars, 0);
messageData.Append(chars);
if (messageData.ToString().IndexOf("<EOF>") != -1)
break;
} while (bytes != 0);
return messageData.ToString();
}
public static int Main(string[] args) {
string certificate = "server.crt";
RunServer(certificate);
return 0;
}
}
Код клиента:
public class SslTcpClient {
private static Hashtable certificateErrors = new Hashtable();
public static bool ValidateServerCertificate(
object sender,
X509Certificate certificate,
X509Chain chain,
SslPolicyErrors sslPolicyErrors) {
if (sslPolicyErrors == SslPolicyErrors.None)
return true;
Console.WriteLine("Certificate error: {0}", sslPolicyErrors);
return false;
}
public static void RunClient(string machineName, string serverName) {
TcpClient client = new TcpClient("127.0.0.1", 56748);
Console.WriteLine("Client connected.");
SslStream sslStream = new SslStream(
client.GetStream(),
false,
new RemoteCertificateValidationCallback(ValidateServerCertificate),
null
);
try {
sslStream.AuthenticateAsClient("127.0.0.1");
} catch (AuthenticationException e) {
Console.WriteLine("Exception: {0}", e.Message);
Console.WriteLine(e.StackTrace);
if (e.InnerException != null) {
Console.WriteLine("Inner exception: {0}", e.InnerException.Message);
}
Console.WriteLine("Authentication failed - closing the connection.");
client.Close();
return;
}
byte[] messsage = Encoding.UTF8.GetBytes("Hello from the client.<EOF>");
sslStream.Write(messsage);
sslStream.Flush();
string serverMessage = ReadMessage(sslStream);
Console.WriteLine("Server says: {0}", serverMessage);
client.Close();
Console.WriteLine("Client closed.");
}
static string ReadMessage(SslStream sslStream) {
byte[] buffer = new byte[2048];
StringBuilder messageData = new StringBuilder();
int bytes = -1;
do {
bytes = sslStream.Read(buffer, 0, buffer.Length);
Decoder decoder = Encoding.UTF8.GetDecoder();
char[] chars = new char[decoder.GetCharCount(buffer, 0, bytes)];
decoder.GetChars(buffer, 0, bytes, chars, 0);
messageData.Append(chars);
if (messageData.ToString().IndexOf("<EOF>") != -1) {
break;
}
} while (bytes != 0);
return messageData.ToString();
}
public static int Main(string[] args) {
string serverCertificateName = "127.0.0.1";
string machineName = "127.0.0.1";
SslTcpClient.RunClient(machineName, serverCertificateName);
return 0;
}
}
Я уже создал сертификат SSL "server.crt", но не могу подключить пользователя к серверу.
У меня есть необработанное исключение:
System.NotSupportedException: серверный режим SSL должен использовать сертификат со связанным закрытым ключом.