private bool CheckCallIsInTransaction()
{
try
{
if (stream == null)
{
return false;
}
if (stream.GetStatus().StatusCode == StatusCode.OK)
{
return false;
}
return false;
}
catch (Exception ex)
{
if (ex.Message == "Status can only be accessed once the call has finished.")
{
return true;
}
else
throw ex;
}
}
/// <summary>
/// Obtain a token per user (identity) for interacting with the remote API.
/// </summary>
/// <param name="publicKey"></param>
/// <param name="VerifySignature"></param>
/// <param name="cancellationToken">The token to monitor for cancellation requests. The default value is <see cref="CancellationToken.None"/>.</param>
/// <returns></returns>
public async Task <string> GetTokenChallenge(string publicKey, Func <byte[], Task <byte[]> > VerifySignature, CancellationToken cancellationToken = default)
{
string token = string.Empty;
using AsyncDuplexStreamingCall <GetTokenRequest, GetTokenReply> call = _apiClient.GetToken(headers: _threadContext.Metadata, deadline: DateTime.UtcNow.AddSeconds(5), cancellationToken: cancellationToken);
GetTokenRequest keyReq = new()
{
Key = publicKey
};
Task readTask = Task.Run(async() =>
{
await foreach (GetTokenReply message in call.ResponseStream.ReadAllAsync())
{
if (!message.Challenge.IsEmpty)
{
byte[] challenge = message.Challenge.ToByteArray();
byte[] signature = await VerifySignature(challenge);
GetTokenRequest signReq = new()
{
Signature = ByteString.CopyFrom(signature)
};
await call.RequestStream.WriteAsync(signReq);
await call.RequestStream.CompleteAsync();
}
else if (message.Token != null)
{
token = message.Token;
}
}
}, cancellationToken);
await call.RequestStream.WriteAsync(keyReq);
await readTask;
if (call.GetStatus().StatusCode == StatusCode.OK)
{
_threadContext.WithToken(token);
return(token);
}
else
{
throw new InvalidOperationException(call.GetStatus().Detail);
}
}
private bool CheckCallStatus()
{
try
{
if (stream.GetStatus().StatusCode == StatusCode.OK)
{
return(true);
}
return(true);
}
catch (Exception ex)
{
return(false);
}
}
public Status GetStatus()
{
return(m_Call.GetStatus());
}
