#define HELLO_PKT_TYPE 0 struct HostID { char IP[80]; int Port; int LastHelloRec; int LastHelloSent; }; struct RecentNeighborEntry { char IP[16]; int Port; }; struct PktStruct { int Type; char SenderIP[16]; int SenderPort; int NumberOfRecentlyHeardNeighbors; struct RecentNeighborEntry RecentNeighbors[100]; };