private async Task <BlittableJsonReaderObject> Receive(ClientWebSocket webSocket,
JsonOperationContext context)
{
BlittableJsonDocumentBuilder builder = null;
try
{
if (webSocket.State != WebSocketState.Open)
{
throw new InvalidOperationException(
$"Trying to 'ReceiveAsync' WebSocket while not in Open state. State is {webSocket.State}");
}
var state = new JsonParserState();
using (context.GetManagedBuffer(out var buffer))
using (var parser = new UnmanagedJsonParser(context, state, ""))
{
builder = new BlittableJsonDocumentBuilder(context, BlittableJsonDocumentBuilder.UsageMode.None,
nameof(TrafficRec) + "." + nameof(Receive), parser, state);
builder.ReadObjectDocument();
while (builder.Read() == false)
{
var result = await webSocket.ReceiveAsync(buffer.Buffer, CancellationToken.None);
if (result.MessageType == WebSocketMessageType.Close)
{
if (_logger.IsInfoEnabled)
{
_logger.Info("Client got close message from server and is closing connection");
}
builder.Dispose();
// actual socket close from dispose
return(null);
}
if (result.EndOfMessage == false)
{
throw new EndOfStreamException("Stream ended without reaching end of json content.");
}
parser.SetBuffer(buffer, 0, result.Count);
}
builder.FinalizeDocument();
return(builder.CreateReader());
}
}
catch (WebSocketException ex)
{
builder?.Dispose();
if (_logger.IsInfoEnabled)
{
_logger.Info("Failed to receive a message, client was probably disconnected", ex);
}
throw;
}
}
private void DisposeInternal()
{
_response.Response.Dispose();
_parser.Dispose();
_returnBuffer.Dispose();
_peepingTomStream.Dispose();
_builder.Dispose();
_returnContext.Dispose();
}