protected override void DoSendMessage(Message msg)
{
// defensive programming before entering the stack, lower layers
// should assume a correct message.
if (msg != null)
{
// check message before sending through the stack
if (msg.PeerAddress.Address == null)
{
throw new IOException("Remote address not specified");
}
// the ProxyCommunicator can't use the API
// SendMessageOverLowerLayer because it has two lower layers
Response response = msg as Response;
if (response != null)
{
Request request = response.Request;
if (_httpStack.IsWaitingRequest(request))
{
if (msg.IsEmptyACK)
{
// if the message is not the actual response, but
// only an acknowledge, should not be forwarded
// (HTTP is on TCP so there is no need for acks in
// the application layer)
return;
}
_httpStack.SendMessage(msg);
return;
}
}
_coapStack.SendMessage(msg);
}
}
