public async Task <string> AuthenticateAsync(string url, string apiKey, JsonOperationContext context)
{
var uri = new Uri(url.ToWebSocketPath());
using (var webSocket = new RavenClientWebSocket())
{
try
{
if (Logger.IsInfoEnabled)
{
Logger.Info($"Trying to connect using WebSocket to {uri} for authentication");
}
try
{
await webSocket.ConnectAsync(uri, _disposedToken.Token);
}
catch (WebSocketException webSocketException)
{
throw new InvalidOperationException($"Cannot connect using WebSocket to {uri} for authentication", webSocketException);
}
AuthenticatorChallenge authenticatorChallenge;
using (var result = await Recieve(webSocket, context))
{
if (result == null)
{
throw new InvalidDataException("Got null authtication challenge");
}
authenticatorChallenge = JsonDeserializationClient.AuthenticatorChallenge(result);
}
var challenge = ComputeChallenge(authenticatorChallenge, apiKey);
await Send(webSocket, context, "ChallengeResponse", challenge);
string currentToken;
using (var reader = await Recieve(webSocket, context))
{
string error;
if (reader.TryGet("Error", out error))
{
string exceptionType;
if (reader.TryGet("ExceptionType", out exceptionType) == false || exceptionType == "InvalidOperationException")
{
throw new InvalidOperationException("Server returned error: " + error);
}
if (exceptionType == "InvalidApiKeyException")
{
throw new InvalidApiKeyException(error);
}
}
string currentOauthToken;
if (reader.TryGet("CurrentToken", out currentOauthToken) == false || currentOauthToken == null)
{
throw new InvalidOperationException("Missing 'CurrentToken' in response message");
}
currentToken = currentOauthToken;
}
try
{
await webSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "Close from client", _disposedToken.Token);
}
catch (Exception ex)
{
if (Logger.IsInfoEnabled)
{
Logger.Info("Failed to close the client", ex);
}
}
return(currentToken);
}
catch (Exception ex)
{
if (Logger.IsInfoEnabled)
{
Logger.Info($"Failed to DoOAuthRequest to {url} with {apiKey}", ex);
}
throw;
}
}
}