/// <summary>
/// Raises <b>SessionCompleted</b> event.
/// </summary>
/// <param name="session">Session what completed processing.</param>
/// <param name="exception">Exception happened or null if relay completed successfully.</param>
internal protected virtual void OnSessionCompleted(Relay_Session session, Exception exception)
{
if (this.SessionCompleted != null)
{
this.SessionCompleted(new Relay_SessionCompletedEventArgs(session, exception));
}
}
/// <summary>
/// Default constructor.
/// </summary>
/// <param name="session">Relay session what completed processing.</param>
/// <param name="exception">Exception what happened or null if relay completed successfully.</param>
/// <exception cref="ArgumentNullException">Is raised when <b>session</b> is null.</exception>
public Relay_SessionCompletedEventArgs(Relay_Session session, Exception exception)
{
if (session == null)
{
throw new ArgumentNullException("session");
}
m_pSession = session;
m_pException = exception;
}
/// <summary>
/// Processes relay queue.
/// </summary>
private void Run()
{
while (m_IsRunning)
{
try
{
// Bind info has changed, create new local end points.
if (m_HasBindingsChanged)
{
m_pLocalEndPointIPv4.Clear();
m_pLocalEndPointIPv6.Clear();
foreach (IPBindInfo binding in m_pBindings)
{
if (binding.IP == IPAddress.Any)
{
foreach (IPAddress ip in System.Net.Dns.GetHostAddresses(""))
{
if (ip.AddressFamily == AddressFamily.InterNetwork)
{
IPBindInfo b = new IPBindInfo(binding.HostName, binding.Protocol, ip, 25);
if (!m_pLocalEndPointIPv4.Contains(b))
{
m_pLocalEndPointIPv4.Add(b);
}
}
}
}
else if (binding.IP == IPAddress.IPv6Any)
{
foreach (IPAddress ip in System.Net.Dns.GetHostAddresses(""))
{
if (ip.AddressFamily == AddressFamily.InterNetworkV6)
{
IPBindInfo b = new IPBindInfo(binding.HostName, binding.Protocol, ip, 25);
if (!m_pLocalEndPointIPv6.Contains(b))
{
m_pLocalEndPointIPv6.Add(b);
}
}
}
}
else
{
IPBindInfo b = new IPBindInfo(binding.HostName, binding.Protocol, binding.IP, 25);
if (binding.IP.AddressFamily == AddressFamily.InterNetwork)
{
if (!m_pLocalEndPointIPv4.Contains(b))
{
m_pLocalEndPointIPv4.Add(b);
}
}
else
{
if (!m_pLocalEndPointIPv6.Contains(b))
{
m_pLocalEndPointIPv6.Add(b);
}
}
}
}
m_HasBindingsChanged = false;
}
// There are no local end points specified.
if (m_pLocalEndPointIPv4.Count == 0 && m_pLocalEndPointIPv6.Count == 0)
{
Thread.Sleep(10);
}
// Maximum allowed relay sessions exceeded, skip adding new ones.
else if (m_MaxConnections != 0 && m_pSessions.Count >= m_MaxConnections)
{
Thread.Sleep(10);
}
else
{
Relay_QueueItem item = null;
// Get next queued message from highest possible priority queue.
foreach (Relay_Queue queue in m_pQueues)
{
item = queue.DequeueMessage();
// There is queued message.
if (item != null)
{
break;
}
// No messages in this queue, see next lower priority queue.
}
// There are no messages in any queue.
if (item == null)
{
Thread.Sleep(10);
}
// Create new session for queued relay item.
else
{
// Relay item has relay target server specified.
if (item.TargetServer != null)
{
Relay_Session session = new Relay_Session(this, item, new Relay_SmartHost[] { item.TargetServer });
m_pSessions.Add(session);
ThreadPool.QueueUserWorkItem(new WaitCallback(session.Start));
}
else if (m_RelayMode == Relay_Mode.Dns)
{
Relay_Session session = new Relay_Session(this, item);
m_pSessions.Add(session);
ThreadPool.QueueUserWorkItem(new WaitCallback(session.Start));
}
else if (m_RelayMode == Relay_Mode.SmartHost)
{
// Get smart hosts in balance mode order.
Relay_SmartHost[] smartHosts = null;
if (m_SmartHostsBalanceMode == BalanceMode.FailOver)
{
smartHosts = m_pSmartHosts.ToArray();
}
else
{
smartHosts = m_pSmartHosts.ToCurrentOrderArray();
}
Relay_Session session = new Relay_Session(this, item, smartHosts);
m_pSessions.Add(session);
ThreadPool.QueueUserWorkItem(new WaitCallback(session.Start));
}
}
}
}
catch (Exception x)
{
OnError(x);
}
}
}