PROTOCOL.H

/* A drastically over-simplified simulation of the contents of
   a message packet.  The fields are an id of a USER (0 or 1),
   and a serial number for a packet. */

typedef struct infoType
  {
     int userID ;
     int packetNum ; 
  } infoType ;

/* A structure for holding a packet buffer, along with all the
   apparatus to regulate its use. */

typedef struct bufferType
  {

     infoType        info         ;
   
     /* You decide what fields you may want here for such things as status
	flags and/or semaphores.  Add code here to declare those fields. */

  } bufferType ;