//--------------- SENDING MESSAGES -----------------------------------------
/**
* Sends the specified stun message through the specified access point.
* @param stunMessage the message to send
* @param apDescriptor the access point to use to send the message
* @param address the destination of the message.
* @throws StunException if message encoding fails, ILLEGAL_ARGUMENT if the
* apDescriptor references an access point that had not been installed,
* NETWORK_ERROR if an error occurs while sending message bytes through the
* network socket.
*/
public virtual void SendMessage(Message stunMessage,
NetAccessPointDescriptor apDescriptor,
StunAddress address)
{
byte[] bytes = stunMessage.Encode();
NetAccessPoint ap = (NetAccessPoint)netAccessPoints[apDescriptor];
if (ap == null)
{
throw new StunException(
StunException.ILLEGAL_ARGUMENT,
"The specified access point had not been installed.");
}
try
{
ap.SendMessage(bytes, address);
}
catch (Exception ex)
{
throw new StunException(StunException.NETWORK_ERROR,
"An Exception occurred while sending message bytes "
+ "through a network socket!",
ex);
}
}
/**
* Stops and deletes the specified access point.
* @param apDescriptor the access point to remove
*/
public virtual void RemoveNetAccessPoint(NetAccessPointDescriptor apDescriptor)
{
NetAccessPoint ap = (NetAccessPoint)netAccessPoints[apDescriptor];
netAccessPoints.Remove(apDescriptor);
if (ap != null)
{
ap.Stop();
}
}
/**
* Creates and starts a new access point according to the given descriptor.
* If the specified access point has already been installed the method
* has no effect.
*
* @param apDescriptor a description of the access point to create.
* @throws StunException if we fail to create or start the accesspoint.
*/
public virtual void InstallNetAccessPoint(NetAccessPointDescriptor apDescriptor)
{
if (netAccessPoints.ContainsKey(apDescriptor))
{
return;
}
NetAccessPoint ap = new NetAccessPoint(apDescriptor, messageQueue, this);
netAccessPoints[apDescriptor] = ap;
ap.Start();
}
/**
* Clears the faulty thread and tries to repair the damage and instanciate
* a replacement.
*
* @param callingThread the thread where the error occurred.
* @param message A description of the error
* @param error The error itself
*/
public void HandleFatalError(Runnable callingThread, String message, Exception error)
{
if (callingThread is NetAccessPoint)
{
NetAccessPoint ap = (NetAccessPoint)callingThread;
bool running = ap.IsRunning();
//make sure socket is closed
RemoveNetAccessPoint(ap.GetDescriptor());
if (running)
{
try
{
Console.WriteLine("An access point has unexpectedly "
+ "stopped. AP: {0}", ap.ToString());
InstallNetAccessPoint(ap.GetDescriptor());
/** @todo: log fixing the error*/
}
catch (StunException ex)
{
//make sure nothing's left and notify user
RemoveNetAccessPoint(ap.GetDescriptor());
Console.WriteLine("Failed to relaunch accesspoint: {0} {1} {2}", ap, ex.Message, ex.StackTrace);
/** @todo notify user and log */
}
}
return;
}
else if (callingThread is MessageProcessor)
{
MessageProcessor mp = (MessageProcessor)callingThread;
//make sure the guy's dead.
mp.Stop();
messageProcessors.Remove(mp);
mp = new MessageProcessor(messageQueue, messageEventHandler, this);
mp.Start();
Console.WriteLine("A message processor has been relaunched because of an error.");
}
Console.WriteLine("Error was: {0} {1}", error.Message, error.StackTrace);
}
/**
* Creates and starts a new access point based on the specified socket.
* If the specified access point has already been installed the method
* has no effect.
*
* @param socket the socket that the access point should use.
* @return an access point descriptor to allow further management of the
* newly created access point.
* @throws StunException if we fail to create or start the accesspoint.
*/
public NetAccessPointDescriptor InstallNetAccessPoint(MyUdpClient socket)
{
//no null check - let it through a null pointer exception
StunAddress address = new StunAddress(socket.GetAddress().ToString(), socket.GetPort());
NetAccessPointDescriptor apDescriptor = new NetAccessPointDescriptor(address);
if (netAccessPoints.ContainsKey(apDescriptor))
{
return(apDescriptor);
}
NetAccessPoint ap = new NetAccessPoint(apDescriptor, messageQueue, this);
//call the useExternalSocket method to avoid closing the socket when
//removing the accesspoint. Bug Report - Dave Stuart - SipQuest
ap.UseExternalSocket(socket);
netAccessPoints[apDescriptor] = (ap);
ap.Start();
return(apDescriptor);
}
/**
* Creates and starts a new access point based on the specified socket.
* If the specified access point has already been installed the method
* has no effect.
*
* @param socket the socket that the access point should use.
* @return an access point descriptor to allow further management of the
* newly created access point.
* @throws StunException if we fail to create or start the accesspoint.
*/
public NetAccessPointDescriptor InstallNetAccessPoint(MyUdpClient socket)
{
//no null check - let it through a null pointer exception
StunAddress address = new StunAddress(socket.GetAddress().ToString(), socket.GetPort());
NetAccessPointDescriptor apDescriptor = new NetAccessPointDescriptor(address);
if(netAccessPoints.ContainsKey(apDescriptor))
return apDescriptor;
NetAccessPoint ap = new NetAccessPoint(apDescriptor, messageQueue, this);
//call the useExternalSocket method to avoid closing the socket when
//removing the accesspoint. Bug Report - Dave Stuart - SipQuest
ap.UseExternalSocket(socket);
netAccessPoints[apDescriptor] = (ap);
ap.Start();
return apDescriptor;
}
/**
* Creates and starts a new access point according to the given descriptor.
* If the specified access point has already been installed the method
* has no effect.
*
* @param apDescriptor a description of the access point to create.
* @throws StunException if we fail to create or start the accesspoint.
*/
public virtual void InstallNetAccessPoint(NetAccessPointDescriptor apDescriptor)
{
if(netAccessPoints.ContainsKey(apDescriptor))
return;
NetAccessPoint ap = new NetAccessPoint(apDescriptor, messageQueue, this);
netAccessPoints[apDescriptor] = ap;
ap.Start();
}
