void EventHandler::raise_event( const std::string& ename, SignalArgs& args)
{
if ( signal_exists(ename) == false ) return;
// event exists so dispatch
call_signal(ename, args);
}
void ServerNetworkComm::callback_read( TCPConnection::Ptr conn,
const boost::system::error_code & error )
{
if( !error )
{
std::string error_msg;
ClientInfo& info = m_clients[conn];
SignalFrame & buffer = info.buffer;
std::string target = buffer.node.attribute_value( "target" );
std::string receiver = buffer.node.attribute_value( "receiver" );
std::string clientid = buffer.node.attribute_value( "clientid" );
std::string frameid = buffer.node.attribute_value( "frameid" );
// check if the client is attempting to register
if( target == "client_registration" )
{
if( !info.uuid.empty() )
error_msg = "This client has already been registered.";
else
{
info.uuid = clientid;
// Build and send the reply
SignalFrame reply = buffer.create_reply();
SignalOptions & roptions = reply.options();
roptions.add("accepted", true);
roptions.flush();
this->init_send(conn, buffer );
// tell listeners a new client has arrived
SignalFrame frame("new_client_connected", "cpath:/", "cpath:/");
frame.options().add( "clientid", clientid );
call_signal( "new_client_connected", frame );
}
}
else
{
if( info.uuid.empty() )
error_msg = "The signal came from an unregistered client.";
else if( info.uuid != clientid )
error_msg = "The client id '" + info.uuid + "' (used for registration) "
+ "and '" + clientid + "' (used for identification) do not match.";
else
ServerRoot::instance().process_signal(target, receiver, clientid, frameid, buffer);
}
if( !error_msg.empty() )
this->send_frame_rejected( conn, frameid, SERVER_CORE_PATH, error_msg );
init_read( info );
}
else if( error != boost::asio::error::eof )
CFerror << "Could not read from [" << conn->socket().remote_endpoint()
<< "]: " << error.message() << CFendl;
if( error )
{
std::string uuid = m_clients[conn].uuid;
conn->disconnect();
m_clients.erase( conn );
if( error == boost::asio::error::eof )
CFinfo << "Cliemt [" << uuid << "] has disconnected. ("
<< m_clients.size() << " left)." << CFendl;
}
}
/* -------------------------------------------------------------------
* helper to call the sigalarm function
* ------------------------------------------------------------------- */
void call_sigalrm() {
call_signal(SIGALRM);
} // end call_sigalrm