first draft

sockopt.c

@@ -0,0 +1,38 @@
+/* 
+ * $smu-mark$ 
+ * $name: sockopt.c$ 
+ * $author: Salvatore Sanfilippo <antirez@invece.org>$ 
+ * $copyright: Copyright (C) 1999 by Salvatore Sanfilippo$ 
+ * $license: This software is under GPL version 2 of license$ 
+ * $date: Fri Nov  5 11:55:49 MET 1999$ 
+ * $rev: 8$ 
+ */ 
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h> /* IP_PROTOIP */
+#include <stdio.h>
+
+void socket_broadcast(int sd)
+{
+	const int one = 1;
+
+	if (setsockopt(sd, SOL_SOCKET, SO_BROADCAST,
+		(char *)&one, sizeof(one)) == -1)
+	{
+		printf("[socket_broadcast] can't set SO_BROADCAST option\n");
+		/* non fatal error */
+	}
+}
+
+void socket_iphdrincl(int sd)
+{
+	const int one = 1;
+
+	if (setsockopt(sd, IPPROTO_IP, IP_HDRINCL,
+		(char *)&one, sizeof(one)) == -1)
+	{
+		printf("[socket_broadcast] can't set IP_HDRINCL option\n");
+		/* non fatal error */
+	}
+}