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MimeKit

ImapClientSslProtocol Property

Get the negotiated SSL or TLS protocol version.

Namespace: MailKit.Net.Imap
Assembly: MailKit (in MailKit.dll) Version: 4.3.0
Syntax
C#
public override SslProtocols SslProtocol { get; }

Property Value

SslProtocols
The negotiated SSL or TLS protocol version.

Implements

IMailServiceSslProtocol
IMailServiceSslProtocol
Remarks

Gets the negotiated SSL or TLS protocol version once an SSL or TLS connection has been made.

Example
C#
public static void PrintSslConnectionInfo (string host, int port)
{
    using (var client = new ImapClient ()) {
        client.Connect (host, port, SecureSocketOptions.Auto);

        Console.WriteLine ($"Negotiated the following SSL options with {host}:");
        Console.WriteLine ($"        Protocol Version: {client.SslProtocol}");
        Console.WriteLine ($"        Cipher Algorithm: {client.SslCipherAlgorithm}");
        Console.WriteLine ($"         Cipher Strength: {client.SslCipherStrength}");
        Console.WriteLine ($"          Hash Algorithm: {client.SslHashAlgorithm}");
        Console.WriteLine ($"           Hash Strength: {client.SslHashStrength}");
        Console.WriteLine ($"  Key-Exchange Algorithm: {client.SslKeyExchangeAlgorithm}");
        Console.WriteLine ($"   Key-Exchange Strength: {client.SslKeyExchangeStrength}");

        // Example Log:
        // 
        // Negotiated the following SSL options with imap.gmail.com:
        //         Protocol Version: Tls12
        //         Cipher Algorithm: Aes128
        //          Cipher Strength: 128
        //           Hash Algorithm: Sha256
        //            Hash Strength: 0
        //   Key-Exchange Algorithm: 44550
        //    Key-Exchange Strength: 255

        client.Disconnect (true);
    }
}
See Also