/// <summary>
/// The read loop.
/// </summary>
private async void ReadLoop()
{
do
{
if (_client.State == WebSocketState.Open)
{
// create the receive buffer
ArraySegment <byte> receiveBuffer = new ArraySegment <byte>(new byte[8192]);
MemoryStream receiveStream = new MemoryStream();
while (_client.State == WebSocketState.Open)
{
// receive into buffer
WebSocketReceiveResult result = null;
try {
result = await _client.ReceiveAsync(receiveBuffer, default(CancellationToken)).ConfigureAwait(false);
} catch (Exception ex) {
Debug.WriteLine($"Failed to receive buffer from websocket: {ex.ToString()}");
break;
}
// check if close message
if (result.MessageType == WebSocketMessageType.Close)
{
break;
}
// append to stream
receiveStream.Write(receiveBuffer.Array, receiveBuffer.Offset, result.Count);
// if end of message process
if (result.EndOfMessage)
{
// get message data
byte[] messageBytes = receiveStream.ToArray();
// decode message
JObject message = null;
try {
message = JObject.Parse(Encoding.UTF8.GetString(messageBytes));
} catch (Exception ex) {
Debug.WriteLine($"Failed to parse buffer from websocket: {ex.ToString()}");
break;
}
// check message type
if (!message.TryGetValue("Type", out JToken typeToken) || typeToken.Type != JTokenType.String)
{
Debug.WriteLine($"Failed to parse buffer from websocket: Type is empty or invalid");
break;
}
// check message payload
if (!message.TryGetValue("Data", out JToken payloadToken) || payloadToken.Type != JTokenType.Object)
{
Debug.WriteLine($"Failed to parse buffer from websocket: Payload is empty or invalid");
break;
}
object data = null;
string type = ((string)typeToken);
if (type.Equals("Event", StringComparison.CurrentCultureIgnoreCase))
{
// deserialize event
try {
data = payloadToken.ToObject <Event>();
} catch (Exception ex) {
Debug.WriteLine($"Failed to parse deserialize event: {ex.ToString()}");
break;
}
// deserialize event data
Event e = (Event)data;
try {
e.Data = ((JObject)e.Data).ToObject(EventName.GetEntityType(((Event)data).Name));
} catch (Exception) {
Debug.WriteLine($"Failed to parse buffer from websocket: Payload is empty or invalid");
}
// notify subscribers
OnReceived(new EventReceivedEventArgs(e, this));
}
else
{
Debug.WriteLine($"Unimplemented frame sent by server: {type}");
}
// prepare for next message
receiveStream = new MemoryStream();
}
}
// invoke disconnected
OnDisconnected(new EventArgs());
}
// try and auto reconnect
try {
// ensure the client has been aborted
try {
_client.Abort();
} catch (Exception) { }
// try and reconnect
await ConnectAndAuthenticateAsync(default(CancellationToken), true).ConfigureAwait(false);
await ResubscribeAllAsync().ConfigureAwait(false);
} catch {
await Task.Delay(5000).ConfigureAwait(false);
}
} while (_autoReconnect && !_reset);
}