Add KEEPALIVE option to the socket of backend. This will automatically

terminate the backend that has no frontend anymore.

diff --git a/src/backend/libpq/pqcomm.c b/src/backend/libpq/pqcomm.c
index b761d34..7d2f7eb 100644 (file)
--- a/src/backend/libpq/pqcomm.c
+++ b/src/backend/libpq/pqcomm.c
@@ -29,7 +29,7 @@
  * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- *     $Id: pqcomm.c,v 1.89 2000/04/14 00:51:58 tgl Exp $
+ *     $Id: pqcomm.c,v 1.90 2000/05/20 13:10:54 ishii Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -375,7 +375,13 @@ StreamConnection(int server_fd, Port *port)
                if (setsockopt(port->sock, pe->p_proto, TCP_NODELAY,
                                           &on, sizeof(on)) < 0)
                {
-                       perror("postmaster: StreamConnection: setsockopt");
+                       perror("postmaster: StreamConnection: setsockopt(TCP_NODELAY)");
+                       return STATUS_ERROR;
+               }
+               if (setsockopt(port->sock, SOL_SOCKET, SO_KEEPALIVE,
+                                          &on, sizeof(on)) < 0)
+               {
+                       perror("postmaster: StreamConnection: setsockopt(SO_KEEPALIVE)");
                        return STATUS_ERROR;
                }
        }