__TODO

/simulations/ -f omnetpp.ini -c Accordion -r 0 ... : FAIL (<!> Submodule overlay)
 No module type named 'oversim.overlay.accordion.AccordionModules' found that
 implements module interface oversim.common.IOverlay (not in the loaded NED files?)
 -- in module (omnetpp::cModule) SimpleUnderlayNetwork.overlayTerminal[0] (id=9),
 at t=0.294926927s, event #2

/simulations/ -f omnetpp.ini -c ChurnVisualization -r 0 ... : FAIL (<!> ASSERT)
 Condition '(oldTerminalCount - 1) == terminalCount' does not hold in function 'handleMessage'
 at common/RandomChurn.cc:114 -- in module (RandomChurn) SimpleUnderlayNetwork.churnGenerator[0] (id=8),
 at t=7536.004328247s, event #220294


/simulations/ -f omnetpp.ini -c MultiOverlay -r 0 ... : FAIL (<!> ASSERT)
 Condition '(oldTerminalCount - 1) == terminalCount' does not hold in function 'handleMessage'
 at common/RandomChurn.cc:114 -- in module (RandomChurn) SimpleUnderlayNetwork.churnGenerator[1] (id=9),
 at t=867.671795884s, event #252584

/simulations/realword/
  these simulations untested

Suggestion:
  Drop the SimpleTCP and SimpleUDP modules and create a SimpleNetworkLayer module for direct sending between hosts.
  Use original TCP and UDP and delayed send code move to new SimpleNetworkLayer module.