public override async Task <GenericLoopbackConnection> EstablishGenericConnectionAsync()
{
Socket socket = await _listenSocket.AcceptAsync().ConfigureAwait(false);
Stream stream = new NetworkStream(socket, ownsSocket: true);
var options = new GenericLoopbackOptions()
{
Address = _options.Address,
SslProtocols = _options.SslProtocols,
UseSsl = false,
ListenBacklog = _options.ListenBacklog
};
GenericLoopbackConnection connection = null;
try
{
if (_options.UseSsl)
{
var sslStream = new SslStream(stream, false, delegate { return(true); });
using (X509Certificate2 cert = Configuration.Certificates.GetServerCertificate())
{
SslServerAuthenticationOptions sslOptions = new SslServerAuthenticationOptions();
sslOptions.EnabledSslProtocols = _options.SslProtocols;
sslOptions.ApplicationProtocols = _options.SslApplicationProtocols;
sslOptions.ServerCertificate = cert;
await sslStream.AuthenticateAsServerAsync(sslOptions, CancellationToken.None).ConfigureAwait(false);
}
stream = sslStream;
if (sslStream.NegotiatedApplicationProtocol == SslApplicationProtocol.Http2)
{
// Do not pass original options so the CreateConnectionAsync won't try to do ALPN again.
return(connection = await Http2LoopbackServerFactory.Singleton.CreateConnectionAsync(socket, stream, options).ConfigureAwait(false));
}
if (sslStream.NegotiatedApplicationProtocol == SslApplicationProtocol.Http11 ||
sslStream.NegotiatedApplicationProtocol == default)
{
// Do not pass original options so the CreateConnectionAsync won't try to do ALPN again.
return(connection = await Http11LoopbackServerFactory.Singleton.CreateConnectionAsync(socket, stream, options).ConfigureAwait(false));
}
else
{
throw new Exception($"Unsupported negotiated protocol {sslStream.NegotiatedApplicationProtocol}");
}
}
if (_options.ClearTextVersion is null)
{
throw new Exception($"HTTP server does not accept clear text connections, either set '{nameof(HttpAgnosticOptions.UseSsl)}' or set up '{nameof(HttpAgnosticOptions.ClearTextVersion)}' in server options.");
}
var buffer = new byte[24];
var position = 0;
while (position < buffer.Length)
{
var readBytes = await stream.ReadAsync(buffer, position, buffer.Length - position).ConfigureAwait(false);
if (readBytes == 0)
{
break;
}
position += readBytes;
}
var memory = new Memory <byte>(buffer, 0, position);
stream = new ReturnBufferStream(stream, memory);
var prefix = Text.Encoding.ASCII.GetString(memory.Span);
if (prefix == Http2LoopbackConnection.Http2Prefix)
{
if (_options.ClearTextVersion == HttpVersion.Version20 || _options.ClearTextVersion == HttpVersion.Unknown)
{
return(connection = await Http2LoopbackServerFactory.Singleton.CreateConnectionAsync(socket, stream, options).ConfigureAwait(false));
}
}
else
{
if (_options.ClearTextVersion == HttpVersion.Version11 || _options.ClearTextVersion == HttpVersion.Unknown)
{
return(connection = await Http11LoopbackServerFactory.Singleton.CreateConnectionAsync(socket, stream, options).ConfigureAwait(false));
}
}
throw new Exception($"HTTP/{_options.ClearTextVersion} server cannot establish connection due to unexpected data: '{prefix}'");
}
catch
{
connection?.Dispose();
connection = null;
stream.Dispose();
throw;
}
finally
{
if (connection != null)
{
await connection.InitializeConnectionAsync().ConfigureAwait(false);
}
}
}
public override async Task <GenericLoopbackConnection> EstablishGenericConnectionAsync()
{
Socket socket = await _listenSocket.AcceptAsync().ConfigureAwait(false);
Stream stream = new NetworkStream(socket, ownsSocket: true);
if (_options.UseSsl)
{
var sslStream = new SslStream(stream, false, delegate { return(true); });
using (X509Certificate2 cert = Configuration.Certificates.GetServerCertificate())
{
SslServerAuthenticationOptions options = new SslServerAuthenticationOptions();
options.EnabledSslProtocols = _options.SslProtocols;
var protocols = new List <SslApplicationProtocol>();
protocols.Add(SslApplicationProtocol.Http11);
protocols.Add(SslApplicationProtocol.Http2);
options.ApplicationProtocols = protocols;
options.ServerCertificate = cert;
await sslStream.AuthenticateAsServerAsync(options, CancellationToken.None).ConfigureAwait(false);
}
stream = sslStream;
if (sslStream.NegotiatedApplicationProtocol == SslApplicationProtocol.Http2)
{
// Do not pass original options so the CreateConnectionAsync won't try to do ALPN again.
return(await Http2LoopbackServerFactory.Singleton.CreateConnectionAsync(socket, stream));
}
if (sslStream.NegotiatedApplicationProtocol == SslApplicationProtocol.Http11)
{
// Do not pass original options so the CreateConnectionAsync won't try to do ALPN again.
return(await Http11LoopbackServerFactory.Singleton.CreateConnectionAsync(socket, stream));
}
throw new Exception($"Unsupported negotiated protocol {sslStream.NegotiatedApplicationProtocol}");
}
var buffer = new byte[24];
var position = 0;
while (position < buffer.Length)
{
var readBytes = await stream.ReadAsync(buffer, position, buffer.Length - position).ConfigureAwait(false);
if (readBytes == 0)
{
break;
}
position += readBytes;
}
var memory = new Memory <byte>(buffer, 0, position);
stream = new ReturnBufferStream(stream, memory);
var prefix = Text.Encoding.ASCII.GetString(memory.Span);
if (prefix == Http2LoopbackConnection.Http2Prefix)
{
if (_options.ClearTextVersion == HttpVersion.Version20 || _options.ClearTextVersion == HttpVersion.Unknown)
{
return(await Http2LoopbackServerFactory.Singleton.CreateConnectionAsync(socket, stream));
}
}
else
{
if (_options.ClearTextVersion == HttpVersion.Version11 || _options.ClearTextVersion == HttpVersion.Unknown)
{
return(await Http11LoopbackServerFactory.Singleton.CreateConnectionAsync(socket, stream));
}
}
throw new Exception($"HTTP/{_options.ClearTextVersion} server cannot establish connection due to unexpected data: '{prefix}'");
}
