SslApplicationProtocol Struct

Definizione

public value class SslApplicationProtocol : IEquatable<System::Net::Security::SslApplicationProtocol>

public readonly struct SslApplicationProtocol : IEquatable<System.Net.Security.SslApplicationProtocol>

type SslApplicationProtocol = struct

Public Structure SslApplicationProtocol
Implements IEquatable(Of SslApplicationProtocol)

Ereditarietà

Object

ValueType

SslApplicationProtocol

Implementazioni

IEquatable<SslApplicationProtocol>

Esempio

Nell'esempio di codice seguente viene illustrata la negoziazione del protocollo a livello di applicazione in SslStream. Il server annuncia il supporto per protocol1 e protocol2. Il client annuncia il supporto per protocol2 e protocol3. Il protocollo comunemente supportato (protocol2) viene negoziato durante l'handshake.

async Task Server(NetworkStream stream, X509Certificate2 serverCertificate)
{
    using var server = new SslStream(stream);

    await server.AuthenticateAsServerAsync(new SslServerAuthenticationOptions
    {
        ServerCertificate = serverCertificate,
        ApplicationProtocols = new()
        {
            new("protocol1"),
            new("protocol2"),
        }
    });

    string protocol = Encoding.ASCII.GetString(server.NegotiatedApplicationProtocol.Protocol.Span);
    System.Console.WriteLine($"Server - negotiated protocol: {protocol}");
}

async Task Client(NetworkStream stream, string hostName)
{
    using var client = new SslStream(stream);

    await client.AuthenticateAsClientAsync(new SslClientAuthenticationOptions
    {
        // the host name must match the name on the certificate used on the server side
        TargetHost = hostName,
        ApplicationProtocols = new()
        {
            new("protocol2"),
            new("protocol3")
        }
    });

    string protocol = Encoding.ASCII.GetString(client.NegotiatedApplicationProtocol.Protocol.Span);
    System.Console.WriteLine($"Client - negotiated protocol: {protocol}");
}

// possible output:
//   Server - negotiated protocol: protocol2
//   Client - negotiated protocol: protocol2

Async Function Server(stream As NetworkStream, serverCertificate As X509Certificate2) As Task
    Using serverStream As SslStream = new SslStream(stream)
        Dim options as New SslServerAuthenticationOptions() With
        {
            .ServerCertificate = serverCertificate,
            .ApplicationProtocols = New List(Of SslApplicationProtocol) From
            {
                New SslApplicationProtocol("protocol1"),
                New SslApplicationProtocol("protocol2")
            }
        }
        Await serverStream.AuthenticateAsServerAsync(options)

        Dim protocol As String = Encoding.ASCII.GetString(
            serverStream.NegotiatedApplicationProtocol.Protocol.Span)
        System.Console.WriteLine($"Server - negotiated protocol: {protocol}")
    End Using
End Function

Async Function Client(stream As NetworkStream, hostName As String ) As Task
    Using clientStream As SslStream = new SslStream(stream)
        Dim options as New SslClientAuthenticationOptions() With
        {
            .TargetHost = hostName,
            .ApplicationProtocols = New List(Of SslApplicationProtocol) From
            {
                New SslApplicationProtocol("protocol2"),
                New SslApplicationProtocol("protocol3")
            }
        }
        Await clientStream.AuthenticateAsClientAsync(options)

        Dim protocol As String = Encoding.ASCII.GetString(
            clientStream.NegotiatedApplicationProtocol.Protocol.Span)
        System.Console.WriteLine($"Client - negotiated protocol: {protocol}")
    End Using
End Function

' possible output:
'   Server - negotiated protocol: protocol2
'   Client - negotiated protocol: protocol2

Commenti

Questo tipo contiene campi statici con valori predefiniti SslApplicationProtocol per le versioni HTTP.

Durante l'handshake, il client invia un elenco di protocolli ALPN disponibili e il server sceglie la corrispondenza migliore da tale elenco.

Per un elenco completo dei protocolli supportati, vedere ID protocollo TLS Application-Layer Protocol Negotiation (ALPN).