#include "mpi.h"
#include <stdio.h>

#define MAX_DATA 20

int
main (int argc, char *argv[])
{
  int myid, numprocs, namelen, provided;
  char processor_name[MPI_MAX_PROCESSOR_NAME];
  char str[] = "HELLO CLIENT\n";
  MPI_Comm client;
  char port_name[MPI_MAX_PORT_NAME];

/*  Initialization MPI structure */
  MPI_Init (&argc, &argv);
  MPI_Comm_size (MPI_COMM_WORLD, &numprocs);
  MPI_Comm_rank (MPI_COMM_WORLD, &myid);
  MPI_Get_processor_name (processor_name, &namelen);

  printf ("server Process Rank %d ,TOT processes %d on %s\n", myid, numprocs, processor_name);fflush(stdout);
  MPI_Open_port (MPI_INFO_NULL, port_name);

  MPI_Publish_name ("montest", MPI_INFO_NULL, port_name);
  printf ("Server %s available at %s\n", "montest", port_name);fflush(stdout);

  if (MPI_Comm_accept (port_name, MPI_INFO_NULL, 0, MPI_COMM_WORLD, &client) != MPI_SUCCESS)
    { 
      printf ("No client available\n");
    }

  MPI_Send (str, MAX_DATA, MPI_CHAR, 0, 1, client);
  MPI_Close_port (port_name);   /*close port */
  MPI_Unpublish_name ("montest", MPI_INFO_NULL, port_name);
  MPI_Finalize ();
  return 0;
}