struct SHostMigrationEventListenerInfo {
  IHostMigrationEventListener* m_pListener;
  bool m_done[MAX_MATCHMAKING_SESSIONS];
  HMStateType m_state[MAX_MATCHMAKING_SESSIONS];
};

INetwork.h

bool m_done[MAX_MATCHMAKING_SESSIONS];

IHostMigrationEventListener* m_pListener;

HMStateType m_state[MAX_MATCHMAKING_SESSIONS];

void Reset(uint32 sessionIndex);

SHostMigrationEventListenerInfo(IHostMigrationEventListener* pListener, const char* pWho);