From 3abd065219dc3b5d4e20d69957d21d3fdac6550a Mon Sep 17 00:00:00 2001
From: Kurt Zeilenga <kurt@openldap.org>
Date: Wed, 4 Aug 1999 23:56:37 +0000
Subject: [PATCH] Add KEEPALIVE support.

---
 clients/gopher/go500.c   | 15 +++++++++++++--
 clients/gopher/go500gw.c | 15 +++++++++++++--
 2 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/clients/gopher/go500.c b/clients/gopher/go500.c
index 234d908691..9bf49a252c 100644
--- a/clients/gopher/go500.c
+++ b/clients/gopher/go500.c
@@ -290,17 +290,28 @@ set_socket( int port )
                 exit( EXIT_FAILURE );
         }
 
+#ifdef SO_REUSEADDR
         /* set option so clients can't keep us from coming back up */
-	one = 1;
+		one = 1;
         if ( setsockopt( s, SOL_SOCKET, SO_REUSEADDR, (char *) &one,
 	    sizeof(one) ) < 0 ) {
                 perror( "setsockopt" );
                 exit( EXIT_FAILURE );
         }
+#endif
+#ifdef SO_KEEPALIVE
+		/* enable keep alives */
+		one = 1;
+        if ( setsockopt( s, SOL_SOCKET, SO_KEEPALIVE, (char *) &one,
+	    sizeof(one) ) < 0 ) {
+                perror( "setsockopt" );
+                exit( EXIT_FAILURE );
+        }
+#endif
 
         /* bind to a name */
         addr.sin_family = AF_INET;
-        addr.sin_addr.s_addr = INADDR_ANY;
+        addr.sin_addr.s_addr = htonl(INADDR_ANY);
         addr.sin_port = htons( port );
         if ( bind( s, (struct sockaddr *) &addr, sizeof(addr) ) ) {
                 perror( "bind" );
diff --git a/clients/gopher/go500gw.c b/clients/gopher/go500gw.c
index c68b3522ef..24b627f02b 100644
--- a/clients/gopher/go500gw.c
+++ b/clients/gopher/go500gw.c
@@ -315,17 +315,28 @@ set_socket( int port )
                 exit( EXIT_FAILURE );
         }
 
+#ifdef SO_REUSEADDR
         /* set option so clients can't keep us from coming back up */
-	one = 1;
+		one = 1;
         if ( setsockopt( s, SOL_SOCKET, SO_REUSEADDR, (char *) &one,
 	    sizeof(one) ) < 0 ) {
                 perror( "setsockopt" );
                 exit( EXIT_FAILURE );
         }
+#endif
+#ifdef SO_KEEPALIVE
+		/* enable keep alives */
+		one = 1;
+        if ( setsockopt( s, SOL_SOCKET, SO_KEEPALIVE, (char *) &one,
+	    sizeof(one) ) < 0 ) {
+                perror( "setsockopt" );
+                exit( EXIT_FAILURE );
+        }
+#endif
 
         /* bind to a name */
         addr.sin_family = AF_INET;
-        addr.sin_addr.s_addr = INADDR_ANY;
+        addr.sin_addr.s_addr = htonl(INADDR_ANY);
         addr.sin_port = htons( port );
         if ( bind( s, (struct sockaddr *) &addr, sizeof(addr) ) ) {
                 perror( "bind" );
-- 
2.39.5