/// <summary>
/// Searches the first Opened connection, and tries to accept the next incoming connection request.
/// </summary>
/// <param name="reportsToSend">The necessary line state reports will be added to this list.</param>
private void AcceptNextConnection(ref List <LobbyLineState[]> reportsToSend)
{
bool openedConnectionFound = false;
for (int i = 0; i < this.connections.Length; i++)
{
if (this.connections[i].LineState == LobbyLineState.Opened)
{
openedConnectionFound = true;
if (this.connections[i].TryAcceptNextConnection())
{
/// The state of a line has been changed so we must notify every client about this change
//SendLineStateReports(); /// ---> This call can cause deadlock
reportsToSend.Add(this.LineStates);
}
break;
}
}
if (!openedConnectionFound)
{
/// If there is no opened communication line, we accept the connection, send a disconnect_indicator
/// and close the connection immediately.
LobbyConnection tmpConnection = CreateConnection_i();
if (null != tmpConnection && tmpConnection.TryAcceptNextConnection())
{
if (tmpConnection.BeginDisconnect())
{
tmpConnection.Shutdown();
}
}
}
}
/// <summary>
/// Process all incoming messages arrived from all connections.
/// </summary>
private void ProcessIncomingMessages()
{
for (int i = 0; i < this.connections.Length; i++)
{
if (this.connections[i].ConnectionState == LobbyConnectionState.Connected)
{
/// The connection is in connected state --> it's incoming messages will be processed by the server
List <RCPackage> incomingPackages = new List <RCPackage>();
if (this.connections[i].ReceiveIncomingPackages(ref incomingPackages))
{
/// Process the incoming messages
foreach (RCPackage package in incomingPackages)
{
if (package.PackageType == RCPackageType.NETWORK_CUSTOM_PACKAGE)
{
/// This is a custom message, forward it to every other clients
package.Sender = i + 1;
for (int j = 0; j < this.connections.Length; j++)
{
if (i != j && this.connections[j].ConnectionState == LobbyConnectionState.Connected)
{
if (!this.connections[j].SendPackage(package))
{
/// Unable to forward the message to a client --> Shutdown the connection
this.connections[j].Shutdown();
this.connections[j].LineState = LobbyLineState.Opened; /// Keep it opened for other clients.
SendLineStateReports();
}
}
}
/// Notify the listener object about the arrived package
this.listener.PackageArrived(package, i + 1);
}
else if (package.PackageType == RCPackageType.NETWORK_CONTROL_PACKAGE &&
package.PackageFormat.ID == Network.FORMAT_DEDICATED_MESSAGE)
{
/// This is a dedicated message, forward only to the targets
byte[] targets = package.ReadByteArray(0); /// List of the targets
byte[] theMessageBytes = package.ReadByteArray(1); /// The embedded message
int parsedBytes = 0;
RCPackage theMessage = RCPackage.Parse(theMessageBytes, 0, theMessageBytes.Length, out parsedBytes);
if (theMessage != null && theMessage.IsCommitted && theMessage.PackageType == RCPackageType.NETWORK_CUSTOM_PACKAGE)
{
/// The embedded message is OK --> forward it to the dedicated targets
theMessage.Sender = i + 1;
for (int j = 0; j < targets.Length; j++)
{
int target = targets[j];
if (target == 0)
{
/// This server is the target
this.listener.PackageArrived(theMessage, i + 1);
}
else if (target - 1 >= 0 && target - 1 < this.connections.Length && target - 1 != i)
{
/// Another client is the target --> forward the message to it
LobbyConnection targetConn = this.connections[target - 1];
if (targetConn.ConnectionState == LobbyConnectionState.Connected)
{
if (!targetConn.SendPackage(theMessage))
{
/// Unable to forward the message to a target --> Shutdown the connection
targetConn.Shutdown();
targetConn.LineState = LobbyLineState.Opened; /// Keep it opened for other clients.
SendLineStateReports();
}
}
}
}
}
else
{
/// The embedded message has unexpected format --> Shutdown the connection
this.connections[i].Shutdown();
this.connections[i].LineState = LobbyLineState.Opened; /// Keep it opened for other clients.
SendLineStateReports();
break; /// Stop processing the messages of the closed connection
}
}
else if (this.connections[i].ConnectionState == LobbyConnectionState.Connected &&
package.PackageType == RCPackageType.NETWORK_CONTROL_PACKAGE &&
package.PackageFormat.ID == Network.FORMAT_DISCONNECT_INDICATOR)
{
/// The client at the other side of the connection wants to disconnect.
/// Acknowledge this request and shutdown the connection.
RCPackage disconnAck = RCPackage.CreateNetworkControlPackage(Network.FORMAT_DISCONNECT_ACK);
disconnAck.WriteString(0, string.Empty);
disconnAck.WriteByteArray(1, new byte[0] {
});
this.connections[i].SendPackage(disconnAck);
this.connections[i].Shutdown();
this.connections[i].LineState = LobbyLineState.Opened; /// Keep it opened for other clients.
SendLineStateReports();
break; /// Stop processing the messages of the closed connection
}
else if (package.PackageType == RCPackageType.NETWORK_CONTROL_PACKAGE &&
package.PackageFormat.ID != Network.FORMAT_DEDICATED_MESSAGE &&
package.PackageFormat.ID != Network.FORMAT_DISCONNECT_ACK &&
package.PackageFormat.ID != Network.FORMAT_DISCONNECT_INDICATOR &&
package.PackageFormat.ID != Network.FORMAT_LOBBY_INFO &&
package.PackageFormat.ID != Network.FORMAT_LOBBY_INFO_VANISHED &&
package.PackageFormat.ID != Network.FORMAT_LOBBY_LINE_STATE_REPORT)
{
/// Custom internal message from a client --> notify the listener
this.listener.ControlPackageArrived(package, i + 1);
}
else
{
/// Unexpected message from the current connection
this.connections[i].Shutdown();
this.connections[i].LineState = LobbyLineState.Opened; /// Keep it opened for other clients.
SendLineStateReports();
break; /// Stop processing the messages of the closed connection
}
} /// end-foreach (RCPackage package in incomingPackages)
}
else
{
/// In case of receive error, we shutdown the connection.
this.connections[i].Shutdown();
this.connections[i].LineState = LobbyLineState.Opened; /// Keep it opened for other clients.
SendLineStateReports();
}
}
else if (this.connections[i].ConnectionState == LobbyConnectionState.Disconnecting)
{
/// The connection is about to disconnect --> incoming messages will be handled by the connection itself
if (this.connections[i].ContinueDisconnect())
{
/// This connection remains closed because disconnection is initiated by the server.
SendLineStateReports();
}
}
} /// end-for (int i = 0; i < this.connections.Length; i++)
}
