NAT Negotiation SDK Callbacks
| NatDetectionResultsFunc | The callback that gets executed from NNStartNatDetection when the detection is complete. |
| NegotiateCompletedFunc | The callback that gets executed from NNBeginNegotiation when negotiation is complete. |
| NegotiateProgressFunc | The callback that gets executed from NNBeginNegotiation as negotiation is proceeding. |