Error : could not send data to server: Error 0

Hi,

I am getting following error while sending the 15000 records using
PQputline() to postgreSQL DB.

*could not send data to server: Error 0*

Code snap:-

      strBuf =
"abc1798,2,26120,34760,653,869,60880,1522,05/24/2007,123456712";
      strBuf += "\n";
      printf("\n%s\n",strBuf.c_str());

  for(i=0;i<15000;i++)
  {
      /*  Send a single row */
      copy_result = PQputline(conn, strBuf.c_str());
      if(copy_result != 0)
      {
          printf("\n%s\n", PQerrorMessage(conn));
     }

  }

  copy_result = PQendcopy(conn);
  if(copy_result != 0)
  {
      printf("\n%s\n", PQerrorMessage(conn));
  }

Platform - Solaris 10 (x86 based processor)
PostgreSQL version - 8.2.0
Interface - libpq
Application language - C/C++

Appreciate help!!!

Regards,
Pawan