/// <exception cref="System.Net.Sockets.SocketException">Throws a SocketException when the connection could not be established with the host</exception>
/// <exception cref="AuthenticationException" />
/// <exception cref="UnsupportedProtocolVersionException"></exception>
private Connection CreateConnection()
{
_logger.Info("Creating a new connection to the host " + Host.Address.ToString());
var c = new Connection(ProtocolVersion, Host.Address, Configuration);
c.Init();
if (Configuration.PoolingOptions.GetHeartBeatInterval() != null)
{
//Heartbeat is enabled, subscribe for possible exceptions
c.OnIdleRequestException += OnIdleRequestException;
}
return(c);
}
/// <summary>
/// Tries to create the a connection to the cluster
/// </summary>
/// <exception cref="NoHostAvailableException" />
/// <exception cref="DriverInternalError" />
private void Connect(bool firstTime)
{
var triedHosts = new Dictionary <IPEndPoint, Exception>();
IEnumerable <Host> hostIterator = Metadata.Hosts;
if (!firstTime)
{
_logger.Info("Trying to reconnect the ControlConnection");
//Use the load balancing policy to determine which host to use
hostIterator = _config.Policies.LoadBalancingPolicy.NewQueryPlan(null, null);
}
foreach (var host in hostIterator)
{
var address = host.Address;
var c = new Connection((byte)_controlConnectionProtocolVersion, address, _config);
try
{
c.Init();
_connection = c;
_host = host;
return;
}
catch (UnsupportedProtocolVersionException)
{
_logger.Info(String.Format("Unsupported protocol version {0}, trying with a lower version", _controlConnectionProtocolVersion));
_controlConnectionProtocolVersion--;
c.Dispose();
if (_controlConnectionProtocolVersion < 1)
{
throw new DriverInternalError("Invalid protocol version");
}
//Retry using the new protocol version
Connect(firstTime);
return;
}
catch (Exception ex)
{
//There was a socket exception or an authentication exception
triedHosts.Add(host.Address, ex);
c.Dispose();
}
}
throw new NoHostAvailableException(triedHosts);
}
/// <summary>
/// Tries to create the a connection to the cluster
/// </summary>
/// <exception cref="NoHostAvailableException" />
/// <exception cref="DriverInternalError" />
private void Connect(bool firstTime)
{
var triedHosts = new Dictionary<IPEndPoint, Exception>();
IEnumerable<Host> hostIterator = Metadata.Hosts;
if (!firstTime)
{
_logger.Info("Trying to reconnect the ControlConnection");
//Use the load balancing policy to determine which host to use
hostIterator = _config.Policies.LoadBalancingPolicy.NewQueryPlan(null, null);
}
foreach (var host in hostIterator)
{
var address = host.Address;
var c = new Connection(ProtocolVersion, address, _config);
try
{
c.Init();
_connection = c;
_host = host;
return;
}
catch (UnsupportedProtocolVersionException)
{
//Use the protocol version used to parse the response message
var nextVersion = c.ProtocolVersion;
if (nextVersion >= ProtocolVersion)
{
//Processor could reorder instructions in such way that the connection protocol version is not up to date.
nextVersion = (byte)(ProtocolVersion - 1);
}
_logger.Info(String.Format("Unsupported protocol version {0}, trying with version {1}", ProtocolVersion, nextVersion));
ProtocolVersion = nextVersion;
c.Dispose();
if (ProtocolVersion < 1)
{
throw new DriverInternalError("Invalid protocol version");
}
//Retry using the new protocol version
Connect(firstTime);
return;
}
catch (Exception ex)
{
//There was a socket exception or an authentication exception
triedHosts.Add(host.Address, ex);
c.Dispose();
}
}
throw new NoHostAvailableException(triedHosts);
}
/// <exception cref="System.Net.Sockets.SocketException">Throws a SocketException when the connection could not be established with the host</exception>
/// <exception cref="AuthenticationException" />
/// <exception cref="UnsupportedProtocolVersionException"></exception>
private Connection CreateConnection()
{
_logger.Info("Creating a new connection to the host " + Host.Address.ToString());
var c = new Connection(ProtocolVersion, Host.Address, Configuration);
c.Init();
if (Configuration.PoolingOptions.GetHeartBeatInterval() != null)
{
//Heartbeat is enabled, subscribe for possible exceptions
c.OnIdleRequestException += OnIdleRequestException;
}
return c;
}
private Connection CreateConnection()
{
_logger.Info("Creating a new connection to the host " + Host.Address.ToString());
var endpoint = new IPEndPoint(Host.Address, Configuration.ProtocolOptions.Port);
var c = new Connection(this.ProtocolVersion, endpoint, Configuration);
c.Init();
return c;
}
