/// <summary>
/// On a connection error. This is the default callback for new connections created
/// by this server.
/// </summary>
protected void OnConnectionError(Exception ex, UdpConnection connection)
{
// log the error
Log.Error("Connection error '" + ex + "'.");
// dispose of the connection
connection.Dispose();
}
//----------------------------------//
internal UdpMessage(UdpConnection connection)
{
// reference the web client
Connection = connection;
_streamBuffer = new ByteBuffer(new MemoryStream(200));
Header = new UdpHeader();
_remainingBodyLength = -1;
}
/// <summary>
/// On a client being accepted by the listenner.
/// </summary>
private void OnReceive(IPEndPoint endpoint, byte[] buffer, int count)
{
if (_stopped)
{
return;
}
UdpConnection connection;
if (_connections.TakeItem().TryGetValue(endpoint, out connection))
{
_connections.Release();
// pass the buffer to the connection
connection.OnReceived(endpoint, buffer, count);
return;
}
try {
// create a new connection
connection = new UdpConnection(this, new IPEndPoint(IPAddress.Any, 0), endpoint);
} catch (Exception ex) {
Log.Error("Exception creating new incoming connection.", ex);
// dispose of the connections
_connections.Release();
// dispose of the new connection
if (connection != null)
{
connection.Dispose();
}
return;
}
// add the new connection
_connections.Item.Add(connection.RemoteEndPoint, connection);
_connections.Release();
// run on connection callback
_onConnection.Run(connection);
// pass the received buffer to the connection
connection.OnReceived(endpoint, buffer, count);
}
/// <summary>
/// Get a udp connection to the specified endpoint.
/// </summary>
public UdpConnection GetConnection(IPEndPoint remoteEndpoint)
{
// has the server been stopped? yes, throw
if (_stopped)
{
throw new InvalidOperationException("The server is stopped.");
}
// try get an existing connection for the specified endpoint
UdpConnection connection;
if (_connections.TakeItem().TryGetValue(remoteEndpoint, out connection))
{
_connections.Release();
return(connection);
}
try {
// create the new connection
connection = new UdpConnection(this, _socket, remoteEndpoint);
connection.OnError = new ActionSet <Exception, UdpConnection>(OnConnectionError, (Exception)null, connection);
} catch (Exception ex) {
Log.Error("Exception creating connection from '" + _socket.LocalEndPoint + "' to '" + remoteEndpoint + "'.", ex);
return(null);
}
// add the new connection to the collection
_connections.Item.Add(remoteEndpoint, connection);
_connections.Release();
// run callback on connection
_onConnection.Run(connection);
// return the new connnection
return(connection);
}
/// <summary>
/// Remove a connection from the servers collection.
/// </summary>
internal void RemoveConnection(UdpConnection connection)
{
_connections.TakeItem().Remove(connection.RemoteEndPoint);
_connections.Release();
}
