internal async Task ConnectSocketAsync(IPAddress address, int port)
{
InitClient();
#if NET46
var connectTask = Task.Factory.FromAsync(_client.BeginConnect, _client.EndConnect, address, port, null);
#else
var connectTask = _client.ConnectAsync(address, port);
#endif
var finishedTask = await Task.WhenAny(connectTask, Task.Delay(_connectionTimeout)).ConfigureAwait(false);
if (connectTask != finishedTask) // timed out
{
try
{
// close client immediately when failed to connect within timeout
await DisconnectAsync().ConfigureAwait(false);
}
catch (Exception e)
{
_logger?.Error(e, $"Failed to close connect to the server {address}:{port}" +
$" after connection timed out {_connectionTimeout.TotalMilliseconds}ms.");
}
throw new OperationCanceledException(
$"Failed to connect to server {address}:{port} within {_connectionTimeout.TotalMilliseconds}ms.");
}
await connectTask.ConfigureAwait(false);
}
public async Task ReceiveOneAsync(IResponsePipeline responsePipeline)
{
try
{
await Reader.ReadAsync(responsePipeline).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger?.Error(ex, $"Unable to read message from server {_uri}, connection will be terminated.");
await StopAsync().ConfigureAwait(false);
throw;
}
// We force ProtocolException's to be thrown here to shortcut the communication with the server
try
{
responsePipeline.AssertNoProtocolViolation();
}
catch (ProtocolException exc)
{
_logger?.Warn(exc, "A bolt protocol error has occurred with server {0}, connection will be terminated.",
_uri.ToString());
await StopAsync().ConfigureAwait(false);
throw;
}
}
public void ReceiveOne(IMessageResponseHandler responseHandler)
{
try
{
Reader.Read(responseHandler);
}
catch (Exception ex)
{
_logger?.Error(ex, $"Unable to read message from server {_uri}, connection will be terminated.");
Stop();
throw;
}
if (responseHandler.HasProtocolViolationError)
{
_logger?.Warn(responseHandler.Error, $"Received bolt protocol error from server {_uri}, connection will be terminated.");
Stop();
throw responseHandler.Error;
}
}
public static async Task <T> TryExecuteAsync <T>(IDriverLogger logger, Func <Task <T> > func, string message = null)
{
try
{
return(await func().ConfigureAwait(false));
}
catch (Exception ex)
{
logger?.Error(ex, message);
throw;
}
}
public static T TryExecute <T>(IDriverLogger logger, Func <T> func, string message = null)
{
try
{
return(func());
}
catch (Exception ex)
{
logger?.Error(ex, message);
throw;
}
}
public static void TryExecute(IDriverLogger logger, Action action, string message = null)
{
try
{
action();
}
catch (Exception ex)
{
logger?.Error(ex, message);
throw;
}
}
internal void ConnectSocket(IPAddress address, int port)
{
InitClient();
using (var cts = new CancellationTokenSource(_connectionTimeout))
{
#if NET452
try
{
_client.Connect(address, port);
}
catch (SocketException ex) when(ex.Message.Contains(
"An address incompatible with the requested protocol was used"))
{
throw new NotSupportedException("This protocol version is not supported.");
}
#else
_client.ConnectAsync(address, port).ConfigureAwait(false).GetAwaiter().GetResult();
#endif
if (cts.IsCancellationRequested)
{
try
{
// close client immediately when failed to connect within timeout
Disconnect();
}
catch (Exception e)
{
_logger?.Error(e, $"Failed to close connect to the server {address}:{port}" +
$" after connection timed out {_connectionTimeout.TotalMilliseconds}ms.");
}
throw new OperationCanceledException(
$"Failed to connect to server {address}:{port} within {_connectionTimeout.TotalMilliseconds}ms.",
cts.Token);
}
}
}
public async Task <IRoutingTable> UpdateRoutingTableAsync(ISet <Uri> triedUris = null,
Func <IConnection, Task <IRoutingTable> > rediscoveryFunc = null)
{
var knownRouters = _routingTable.Routers;
foreach (var router in knownRouters)
{
triedUris?.Add(router);
try
{
var conn = await _poolManager.CreateClusterConnectionAsync(router).ConfigureAwait(false);
if (conn == null)
{
_routingTable.Remove(router);
}
else
{
var newRoutingTable = await _discovery.DiscoverAsync(conn).ConfigureAwait(false);
if (!IsRoutingTableStale(newRoutingTable))
{
return(newRoutingTable);
}
}
}
catch (SecurityException e)
{
_logger?.Error(e,
"Failed to update routing table from server '{0}' because of a security exception.", router);
throw;
}
catch (Exception e)
{
_logger?.Warn(e, "Failed to update routing table from server '{0}'.", router);
}
}
return(null);
}
public void Error(Exception cause, string message, params object[] args)
{
_delegate?.Error(cause, Reformat(message), args);
}