Processes any negotiation or NAT detection requests that are in progress.

void NNThink( );

Remarks

After you’ve begun a negotiation and/or NAT detection, you need to call the NNThink function on regular intervals (recommended: 100ms) to process the connection. You may call NNThink when no negotiations are in progress as well - it will simply return immediately.

Section Reference: Gamespy NAT Negotiation SDK