public async Task <bool> InitAsync()
{
if (await ParseSubscriptionOptionsAsync() == false)
{
return(false);
}
if (_logger.IsInfoEnabled)
{
_logger.Info($"Subscription connection for subscription ID: {SubscriptionId} received from {TcpConnection.TcpClient.Client.RemoteEndPoint}");
}
try
{
TcpConnection.DocumentDatabase.SubscriptionStorage.AssertSubscriptionIdExists(SubscriptionId);
}
catch (SubscriptionDoesNotExistException e)
{
if (_logger.IsInfoEnabled)
{
_logger.Info("Subscription does not exist", e);
}
await WriteJsonAsync(new DynamicJsonValue
{
["Type"] = "CoonectionStatus",
["Status"] = "NotFound",
["FreeText"] = e.ToString()
});
return(false);
}
_state = TcpConnection.DocumentDatabase.SubscriptionStorage.OpenSubscription(this);
var timeout = 0;
while (true)
{
try
{
DisposeOnDisconnect = await _state.RegisterSubscriptionConnection(this,
timeout);
await WriteJsonAsync(new DynamicJsonValue
{
["Type"] = "CoonectionStatus",
["Status"] = "Accepted"
});
Stats.ConnectedAt = DateTime.UtcNow;
return(true);
}
catch (TimeoutException)
{
if (timeout == 0 && _logger.IsInfoEnabled)
{
_logger.Info(
$"Subscription Id {SubscriptionId} from IP {TcpConnection.TcpClient.Client.RemoteEndPoint} starts to wait until previous connection from {_state.Connection.TcpConnection.TcpClient.Client.RemoteEndPoint} is released");
}
timeout = Math.Max(250, _options.TimeToWaitBeforeConnectionRetryMilliseconds / 2);
await SendHeartBeat();
}
catch (SubscriptionInUseException)
{
if (timeout == 0 && _logger.IsInfoEnabled)
{
_logger.Info(
$"Subscription Id {SubscriptionId} from IP {TcpConnection.TcpClient.Client.RemoteEndPoint} with connection strategy {Strategy} was rejected because previous connection from {_state.Connection.TcpConnection.TcpClient.Client.RemoteEndPoint} has stronger connection strategy ({_state.Connection.Strategy})");
}
await WriteJsonAsync(new DynamicJsonValue
{
["Type"] = "CoonectionStatus",
["Status"] = "InUse"
});
return(false);
}
}
}