/// <summary>
/// Constructor.
/// </summary>
/// <param name="port">The port for the server of the bus. Leave null for default port.</param>
/// <param name="accessControl">Control requirements for user and password for connecting clients, pass null for no control (everyone can connect).</param>
public ServerMessageBus(string name, int? port, ServerAccessControl accessControl)
: base(name)
{
AccessControl = accessControl;
if (port.HasValue == false)
{
port = DefaultPort;
}
_server = new SocketMessageServer(base.Serializer);
_server.Start(new IPEndPoint(IPAddress.Any, port.Value));
_server.ClientAsyncMessageSendEvent += new SocketMessageServer.AsyncMessageSendUpdateDelegate(_server_ClientAsyncMessageSendEvent);
_server.ClientConnectedEvent += new SocketMessageServer.ServerClientUpdateDelegate(_server_ClientConnectedEvent);
_server.ClientDisconnectedEvent += new SocketMessageServer.ServerClientUpdateDelegate(_server_ClientDisconnectedEvent);
_server.ClientMessageReceivedEvent += new SocketMessageServer.MessageUpdateDelegate(_server_ClientMessageReceivedEvent);
ApplicationLifetimeHelper.ApplicationClosingEvent += new CommonHelper.DefaultDelegate(ApplicationLifetimeHelper_ApplicationClosingEvent);
}
void _server_ClientMessageReceivedEvent(SocketMessageServer server, SocketCommunicatorEx client, object message)
{
ServerAccessControl accessControl = AccessControl;
// Check security first.
if (accessControl != null && message is AccessMessage == false)
{
if (accessControl.IsAllowed(ObtainClientAccessControl(client.Id)) == false)
{
#if Matrix_Diagnostics
InstanceMonitor.Info("Message [" + message.ToString() +"] from client [" + client.ToString() + "] not allowed due to access control.", TracerItem.PriorityEnum.Medium);
#endif
return;
}
}
if (message is EnvelopeMessage)
{// Envelope user message.
EnvelopeMessage envelopeMessage = (EnvelopeMessage)message;
// Remove the remote message bus index association.
envelopeMessage.Sender.LocalMessageBusIndex = ClientId.InvalidMessageBusClientIndex;
foreach (ClientId id in envelopeMessage.Receivers)
{
// Assign the id as local id, if it is, otherwise skip it.
id.LocalMessageBusIndex = base.GetClientIndexByGuid(id.Guid);
if (id.IsMessageBusIndexValid)
{
id.MessageBus = this;
if (DoSendToClient(envelopeMessage.Sender, id, envelopeMessage.Envelope, null) != SendToClientResultEnum.Success)
{
#if Matrix_Diagnostics
InstanceMonitor.OperationError(string.Format("Failed to accept envelope message [{0}].", envelopeMessage.ToString()));
#endif
}
}
else
{
#if Matrix_Diagnostics
InstanceMonitor.OperationError(string.Format("Failed to accept envelope message [{0}] due unrecognized receiver id.", envelopeMessage.ToString()));
#endif
}
}
}
else if (message is ClientsListMessage)
{// Message bus system message.
ClientsListMessage updateMessage = (ClientsListMessage)message;
for (int i = 0; i < updateMessage.Ids.Count; i++)
{
RegisterClientId(client.Id, updateMessage.Ids[i], updateMessage.Types[i], updateMessage.SourcesTypes[i]);
}
}
else if (message is RequestClientListUpdateMessage)
{
SendClientsUpdate(client.Id);
}
else if (message is ClientUpdateMessage)
{
ClientUpdateMessage updateMessage = (ClientUpdateMessage)message;
bool validClient;
lock (_syncRoot)
{
validClient = _remoteClientNetId.ContainsKey(updateMessage.ClientId);
}
if (validClient)
{
RaiseClientAddedEvent(updateMessage.ClientId);
}
else
{
#if Matrix_Diagnostics
InstanceMonitor.OperationError(string.Format("Failed to raise update event for client [{0}], since client not found.", updateMessage.ClientId.ToString()));
#endif
}
}
else if (message is AccessMessage)
{
ClientAccessControl control = ObtainClientAccessControl(client.Id);
if (control != null)
{
control.Update(message as AccessMessage);
}
}
else if (message is StateUpdateMessage)
{
RaiseCounterPartyUpdateEvent("Client:" + client.Id.ToString(), ((StateUpdateMessage)message).State.ToString());
}
else
{
#if Matrix_Diagnostics
InstanceMonitor.Warning(string.Format("Message [{0}] not recognized.", message.GetType().Name));
#endif
}
}
void _server_ClientDisconnectedEvent(SocketMessageServer server, SocketCommunicatorEx client)
{
// Clear all clients hooked on this connection.
ListUnique<ClientId> clientsIds = null;
lock (_syncRoot)
{
if (_remoteClientsNetIds.TryGetByKey(client.Id, ref clientsIds) == false)
{
return;
}
_clientsAccessControl.Remove(client.Id);
_remoteClientsNetIds.RemoveByKey(client.Id);
foreach (ClientId id in clientsIds)
{
_remoteClientNetId.Remove(id);
_remoteClientsTypes.Remove(id);
_remoteClientsSourcesTypesNames.Remove(id);
}
}
// Raise event to notify of the disconnection of all these Ids.
foreach (ClientId id in clientsIds)
{
// Notify of clients removal, with non permanent remove, since they may later be restored.
RaiseClientRemovedEvent(id, false);
}
}
void _server_ClientConnectedEvent(SocketMessageServer server, SocketCommunicatorEx client)
{
// The client expects is, so activate keep alive.
client.KeepAlive = true;
// Send local bus clients info to connected element.
// Important - this will also be sent even to clients that do not have verified access control.
if (SendClientsUpdate(client.Id) == false)
{
#if Matrix_Diagnostics
InstanceMonitor.OperationError("Failed to send clients update to client [" + client.ToString() + ", " + client.Id + "].");
#endif
}
}
void _server_ClientAsyncMessageSendEvent(SocketMessageServer server, SocketCommunicatorEx client, SocketCommunicator.AsyncMessageSendInfo info)
{
// A message has been successfully sent to client.
}
public override void Dispose()
{
ApplicationLifetimeHelper.ApplicationClosingEvent -= new CommonHelper.DefaultDelegate(ApplicationLifetimeHelper_ApplicationClosingEvent);
SocketMessageServer server = _server;
_server = null;
if (server != null)
{
server.ClientAsyncMessageSendEvent -= new SocketMessageServer.AsyncMessageSendUpdateDelegate(_server_ClientAsyncMessageSendEvent);
server.ClientConnectedEvent -= new SocketMessageServer.ServerClientUpdateDelegate(_server_ClientConnectedEvent);
server.ClientDisconnectedEvent -= new SocketMessageServer.ServerClientUpdateDelegate(_server_ClientDisconnectedEvent);
server.ClientMessageReceivedEvent -= new SocketMessageServer.MessageUpdateDelegate(_server_ClientMessageReceivedEvent);
server.Stop(TimeSpan.FromSeconds(2));
server.Dispose();
}
base.Dispose();
}
