private void SocketOnClose(CoinExStream stream)
{
log.Write(LogVerbosity.Debug, $"Socket {stream.StreamResult.StreamId} closed event");
if (stream.TryReconnect)
{
log.Write(LogVerbosity.Info, $"Socket {stream.StreamResult.StreamId} Connection lost, going to try to reconnect");
Task.Run(() =>
{
Thread.Sleep(reconnectInterval);
if (!stream.Socket.Connect().Result)
{
log.Write(LogVerbosity.Debug, $"Socket {stream.StreamResult.StreamId} failed to reconnect");
return; // Connect() should result in a SocketClosed event so we end up here again
}
log.Write(LogVerbosity.Info, $"Socket {stream.StreamResult.StreamId} Reconnected");
if (stream.Request != null)
{
var resubResult = Subscribe(stream, stream.Request, true).Result;
if (!resubResult.Success)
{
log.Write(LogVerbosity.Info, $"Socket {stream.StreamResult.StreamId} failed to resubscribe, closing socket and trying again");
stream.Close(true).Wait();
}
else
{
log.Write(LogVerbosity.Info, $"Socket {stream.StreamResult.StreamId} resubscribed reconnected socket");
}
}
});
}
else
{
log.Write(LogVerbosity.Info, $"Socket {stream.StreamResult.StreamId} closed");
lock (subscriptions)
if (subscriptions.Contains(stream.Subscription))
{
subscriptions.Remove(stream.Subscription);
}
stream.StreamResult.InvokeClosed();
stream.Socket.Dispose();
lock (sockets)
sockets.Remove(stream);
}
}
private async Task <CallResult <CoinExStreamSubscription> > Subscribe(CoinExStream stream, CoinExSocketRequest request, bool resubscribing)
{
if (stream.Authenticated)
{
var auth = await Authenticate(stream).ConfigureAwait(false);
if (!auth.Success)
{
return(new CallResult <CoinExStreamSubscription>(null, auth.Error));
}
}
if (!resubscribing) // Only add the message handler once, is already done if resubscribing
{
stream.Socket.OnMessage += (msg) => OnMessage(stream.StreamResult.StreamId, msg);
}
var subConfirm = await Query <CoinExSocketRequestResponseMessage>(stream, request).ConfigureAwait(false);
if (subConfirm.Success)
{
stream.Request = request;
stream.Subscription.StreamId = stream.StreamResult.StreamId;
stream.TryReconnect = true;
lock (subscriptions)
if (!subscriptions.Contains(stream.Subscription))
{
subscriptions.Add(stream.Subscription);
}
log.Write(LogVerbosity.Info, $"Subscription {stream.Subscription.StreamId} successful");
}
else
{
log.Write(LogVerbosity.Info, $"Failed to subscribe {stream.Subscription.StreamId}: {subConfirm.Error}");
if (!resubscribing) // If we're just trying to initialy subscribe we dont need to reconnect if we failed subbing, so close it here
{
await stream.Close().ConfigureAwait(false);
}
}
return(new CallResult <CoinExStreamSubscription>(stream.StreamResult, subConfirm.Error));
}
private CallResult <CoinExStream> ConnectNewSocket()
{
var socket = SocketFactory.CreateWebsocket(log, baseAddress);
log.Write(LogVerbosity.Debug, "Created new socket");
var id = NextStreamId();
var stream = new CoinExStream()
{
Socket = socket, StreamResult = new CoinExStreamSubscription()
{
StreamId = id
}
};
if (apiProxy != null)
{
socket.SetProxy(apiProxy.Host, apiProxy.Port);
}
socket.SetEnabledSslProtocols(protocols);
socket.OnClose += () => SocketOnClose(stream);
socket.OnError += SocketOnError;
socket.OnError += stream.StreamResult.InvokeError;
socket.OnOpen += SocketOnOpen;
if (socket.Connect().Result)
{
lock (sockets)
sockets.Add(stream);
return(new CallResult <CoinExStream>(stream, null));
}
socket.Dispose();
return(new CallResult <CoinExStream>(null, new CantConnectError()));
}
private async Task <CallResult <bool> > Authenticate(CoinExStream stream)
{
if (authProvider == null)
{
return(new CallResult <bool>(false, new NoApiCredentialsError()));
}
var result = await Query <CoinExSocketRequestResponseMessage>(stream, new CoinExSocketRequest(ServerSubject, AuthenticateAction, GetAuthParameters())).ConfigureAwait(false);
if (!result.Success)
{
log.Write(LogVerbosity.Debug, "Failed to authenticate: " + result.Error);
return(new CallResult <bool>(false, result.Error));
}
if (result.Data.Status != SuccessString)
{
log.Write(LogVerbosity.Debug, "Failed to authenticate: " + result.Data.Status);
return(new CallResult <bool>(false, new ServerError(result.Data.Status)));
}
log.Write(LogVerbosity.Debug, "Successfully authenticated");
return(new CallResult <bool>(true, null));
}
private async Task <CallResult <T> > Query <T>(CoinExStream stream, CoinExSocketRequest request)
{
return(await Task.Run(() =>
{
log.Write(LogVerbosity.Debug, $"Querying socket {stream.Subscription.StreamId} for {request.Method}");
ManualResetEvent evnt = new ManualResetEvent(false);
CallResult <CoinExSocketRequestResponse <T> > result = null;
request.Id = NextRequestId();
var onMessageAction = new Action <string>((msg) =>
{
log.Write(LogVerbosity.Debug, "Socket received query response: " + msg);
var token = JToken.Parse(msg);
if ((int?)token["id"] != request.Id)
{
return;
}
if (token["error"].Type == JTokenType.Null)
{
result = Deserialize <CoinExSocketRequestResponse <T> >(msg);
}
else
{
var errorResult = Deserialize <CoinExSocketError>(token["error"].ToString());
if (!errorResult.Success)
{
result = new CallResult <CoinExSocketRequestResponse <T> >(null, new ServerError("Unknown error: " + token["error"]));
}
else
{
result = new CallResult <CoinExSocketRequestResponse <T> >(null, new ServerError(errorResult.Data.Code, errorResult.Data.Message));
}
}
evnt?.Set();
});
stream.Socket.OnMessage += onMessageAction;
var data = JsonConvert.SerializeObject(request);
log.Write(LogVerbosity.Debug, "Sending data: " + data);
stream.Socket.Send(data);
evnt.WaitOne(subResponseTimeout);
stream.Socket.OnMessage -= onMessageAction;
evnt.Dispose();
evnt = null;
if (result == null)
{
return new CallResult <T>(default(T), new ServerError("No response from server"));
}
if (!result.Success)
{
return new CallResult <T>(default(T), result.Error);
}
if (result.Data.Error != null)
{
return new CallResult <T>(default(T), new ServerError(result.Data.Error.Code, result.Data.Error.Message));
}
return new CallResult <T>(result.Data.Result, null);
}).ConfigureAwait(false));
}