private static void MakeUnsecureHandshake(Uri uri, Stream stream)
{
var env = MakeHandshakeEnvironment(uri, stream);
var result = new UpgradeHandshaker(env).Handshake();
var success = result[HandshakeKeys.Successful] as string == HandshakeKeys.True;
if (!success)
{
throw new Http2HandshakeFailed(HandshakeFailureReason.InternalError);
}
}
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);
}
_isSecure = port == securePort;
var tcpClnt = new TcpClient(connectUri.Host, port);
_clientStream = tcpClnt.GetStream();
if (_useHandshake)
{
if (_isSecure)
{
_clientStream = new SslStream(_clientStream, false);
_certificate = LoadPKCS12Certificate(AssemblyName + CertificatePath, String.Empty);
_chain = new X509Chain {
_certificate
};
var certList = new X509List {
_certificate
};
(_clientStream as SslStream).AuthenticateAsClient(connectUri.AbsoluteUri, certList, _chain,
SslProtocols.Tls, SslStrength.All, false);
_selectedProtocol = (_clientStream as SslStream).AlpnSelectedProtocol;
}
if (!_isSecure || _selectedProtocol == Protocols.Http1)
{
MakeHandshakeEnvironment();
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");
Protocol = _isSecure ? SslProtocols.Tls : SslProtocols.None;
if (_useHttp20)
{
_sessionAdapter = new Http2ClientMessageHandler(_clientStream, ConnectionEnd.Client, _isSecure, 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);
}
