void mitk::IGTLClient::Receive()
{
//try to receive a message, if the socket is not present anymore stop the
//communication
unsigned int status = this->ReceivePrivate(this->m_Socket);
if ( status == IGTL_STATUS_NOT_PRESENT )
{
this->StopCommunicationWithSocket(this->m_Socket);
//inform observers about loosing the connection to this socket
this->InvokeEvent(LostConnectionEvent());
MITK_WARN("IGTLClient") << "Lost connection to server socket.";
}
}
void mitk::IGTLServer::Receive()
{
unsigned int status = IGTL_STATUS_OK;
SocketListType socketsToBeRemoved;
//the server can be connected with several clients, therefore it has to check
//all registered clients
SocketListIteratorType it;
m_ReceiveListMutex->Lock();
auto it_end = this->m_RegisteredClients.end();
for (it = this->m_RegisteredClients.begin(); it != it_end; ++it)
{
//it is possible that ReceivePrivate detects that the current socket is
//already disconnected. Therefore, it is necessary to remove this socket
//from the registered clients list
status = this->ReceivePrivate(*it);
if (status == IGTL_STATUS_NOT_PRESENT)
{
//remember this socket for later, it is not a good idea to remove it
//from the list directly because we iterate over the list at this point
socketsToBeRemoved.push_back(*it);
MITK_WARN("IGTLServer") << "Lost connection to a client socket. ";
}
else if (status != 1)
{
MITK_WARN("IGTLServer") << "IGTL Message with status: " << status;
}
}
m_ReceiveListMutex->Unlock();
if (socketsToBeRemoved.size() > 0)
{
//remove the sockets that are not connected anymore
this->StopCommunicationWithSocket(socketsToBeRemoved);
//inform observers about loosing the connection to these sockets
this->InvokeEvent(LostConnectionEvent());
}
}