public static Http11ProtocolOwinAdapter CreateHttp11Adapter(DuplexStream duplexStream, Func<IDictionary<string, object>, Task> appFunc)
{
var headers = "GET / HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: Upgrade\r\n" +
"Upgrade: " + Protocols.Http2 + "\r\n" +
"HTTP2-Settings: \r\n" + // TODO send any valid parameters
"\r\n";
var requestBytes = Encoding.UTF8.GetBytes(headers);
var mock = Mock.Get(duplexStream ?? CreateStream());
int position = 0;
var modifyBufferData = new Action<byte[], int, int>((buffer, offset, count) =>
{
for (int i = offset; count > 0; --count, ++i)
{
buffer[i] = requestBytes[position];
++position;
}
});
mock.Setup(stream => stream.Read(It.IsAny<byte[]>(), It.IsAny<int>(), It.IsAny<int>())).Callback(modifyBufferData)
.Returns<byte[], int, int>((buffer, offset, count) => count); // read our requestBytes
mock.Setup(stream => stream.CanRead).Returns(true);
return new Http11ProtocolOwinAdapter(mock.Object, SecureProtocol.Tls1, appFunc);
}
/// <summary>
/// Initializes a new instance of the <see cref="Http2OwinMessageHandler"/> class.
/// </summary>
/// <param name="stream">The stream.</param>
/// <param name="end"></param>
/// <param name="transportInfo">The transport information.</param>
/// <param name="next">The next layer delegate.</param>
/// <param name="cancel">The cancellation token.</param>
public Http2OwinMessageHandler(DuplexStream stream, ConnectionEnd end, TransportInformation transportInfo,
AppFunc next, CancellationToken cancel)
: base(stream, end, stream.IsSecure, transportInfo, cancel)
{
_next = next;
stream.OnClose += delegate { Dispose(); };
}
public Http2ClientMessageHandler(DuplexStream stream, ConnectionEnd end, TransportInformation transportInfo, CancellationToken cancel)
: base(stream, end, stream.IsSecure, transportInfo, cancel)
{
_fileHelper = new FileHelper(ConnectionEnd.Client);
stream.OnClose += delegate { Dispose(); };
}
public bool Connect(Uri connectUri)
{
_path = connectUri.PathAndQuery;
_version = Protocols.Http2;
_scheme = connectUri.Scheme;
_host = connectUri.Host;
_port = connectUri.Port;
ServerUri = connectUri.Authority;
if (_sessionAdapter != null)
{
return false;
}
try
{
int port = connectUri.Port;
int securePort;
if (!int.TryParse(ConfigurationManager.AppSettings["securePort"], out securePort))
{
Http2Logger.LogError("Incorrect port in the config file!");
return false;
}
//Connect alpn extension, set known protocols
var extensions = new[] {ExtensionType.Renegotiation, ExtensionType.ALPN};
Options = port == securePort
? new SecurityOptions(SecureProtocol.Tls1, extensions, new[] { Protocols.Http1, Protocols.Http2 },
ConnectionEnd.Client)
: new SecurityOptions(SecureProtocol.None, extensions, new[] { Protocols.Http1, Protocols.Http2 },
ConnectionEnd.Client);
Options.VerificationType = CredentialVerification.None;
Options.Certificate = Org.Mentalis.Security.Certificates.Certificate.CreateFromCerFile(CertificatePath);
Options.Flags = SecurityFlags.Default;
Options.AllowedAlgorithms = SslAlgorithms.RSA_AES_256_SHA | SslAlgorithms.NULL_COMPRESSION;
var socket = new SecureSocket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp, Options);
using (var monitor = new ALPNExtensionMonitor())
{
monitor.OnProtocolSelected += (o, args) => { _selectedProtocol = args.SelectedProtocol; };
socket.Connect(new DnsEndPoint(connectUri.Host, connectUri.Port), monitor);
_clientStream = new DuplexStream(socket, true);
if (_useHandshake)
{
MakeHandshakeEnvironment();
//Handshake manager determines what handshake must be used: upgrade or secure
if (socket.SecureProtocol != SecureProtocol.None)
{
socket.MakeSecureHandshake(Options);
_selectedProtocol = socket.SelectedProtocol;
}
if (socket.SecureProtocol == SecureProtocol.None || _selectedProtocol == Protocols.Http1)
{
try
{
var handshakeResult = new UpgradeHandshaker(_environment).Handshake();
_environment.Add(HandshakeKeys.Result, handshakeResult);
_useHttp20 = handshakeResult[HandshakeKeys.Successful] as string == HandshakeKeys.True;
if (!_useHttp20)
{
Dispose(false);
return true;
}
}
catch (Http2HandshakeFailed ex)
{
if (ex.Reason == HandshakeFailureReason.InternalError)
{
_useHttp20 = false;
}
else
{
Http2Logger.LogError("Specified server did not respond");
Dispose(true);
return false;
}
}
}
}
}
Http2Logger.LogDebug("Handshake finished");
if (_useHttp20)
{
//TODO provide transport info
_sessionAdapter = new Http2ClientMessageHandler(_clientStream, ConnectionEnd.Client, default(TransportInformation),
CancellationToken.None);
}
}
catch (SocketException)
{
Http2Logger.LogError("Check if any server listens port " + connectUri.Port);
Dispose(true);
return false;
}
catch (Exception ex)
{
Http2Logger.LogError("Unknown connection exception was caught: " + ex.Message);
Dispose(true);
return false;
}
return true;
}
private void HandleAcceptedClient(SecureSocket incomingClient, ALPNExtensionMonitor monitor)
{
bool backToHttp11 = false;
string selectedProtocol = Protocols.Http1;
if (_useHandshake)
{
try
{
if (_options.Protocol != SecureProtocol.None)
{
incomingClient.MakeSecureHandshake(_options);
selectedProtocol = incomingClient.SelectedProtocol;
}
}
catch (SecureHandshakeException ex)
{
switch (ex.Reason)
{
case SecureHandshakeFailureReason.HandshakeInternalError:
backToHttp11 = true;
break;
case SecureHandshakeFailureReason.HandshakeTimeout:
incomingClient.Close();
Http2Logger.LogError("Handshake timeout. Client was disconnected.");
return;
default:
incomingClient.Close();
Http2Logger.LogError("Unknown error occurred during secure handshake");
return;
}
}
catch (Exception e)
{
Http2Logger.LogError("Exception occurred. Closing client's socket. " + e.Message);
incomingClient.Close();
return;
}
}
var clientStream = new DuplexStream(incomingClient, true);
var transportInfo = GetTransportInfo(incomingClient);
monitor.Dispose();
try
{
HandleRequest(clientStream, selectedProtocol, transportInfo, backToHttp11);
}
catch (Exception e)
{
Http2Logger.LogError("Exception occurred. Closing client's socket. " + e.Message);
incomingClient.Close();
}
}
private async void OpenHttp2Session(DuplexStream incomingClientStream,
TransportInformation transportInformation)
{
Http2Logger.LogDebug("Handshake successful");
using (var messageHandler = new Http2OwinMessageHandler(incomingClientStream, ConnectionEnd.Server, transportInformation, _next, _cancelClientHandling.Token))
{
try
{
await messageHandler.StartSessionAsync();
}
catch (Exception)
{
Http2Logger.LogError("Client was disconnected");
}
}
GC.Collect();
}
private void HandleRequest(DuplexStream incomingClient, string alpnSelectedProtocol,
TransportInformation transportInformation, bool backToHttp11)
{
//Server checks selected protocol and calls http2 or http11 layer
if (backToHttp11 || alpnSelectedProtocol == Protocols.Http1)
{
if (incomingClient.IsSecure)
Http2Logger.LogDebug("Ssl chose http11");
new Http11ProtocolOwinAdapter(incomingClient, _options.Protocol, _next).ProcessRequest();
return;
}
//ALPN selected http2. No need to perform upgrade handshake.
OpenHttp2Session(incomingClient, transportInformation);
}
public static void SendSessionHeader(DuplexStream stream)
{
stream.Write(ClientSessionHeader);
stream.Flush();
}
