The CONNECTION_INFO_0 structure contains the identifier of a connection.

 typedef struct _CONNECTION_INFO_0 {
   DWORD coni0_id;
 } CONNECTION_INFO_0,
  *PCONNECTION_INFO_0,
  *LPCONNECTION_INFO_0;

coni0_id: Specifies a connection identifier. For more information, see Abstract Data Model (section 3.1.1).