Initial commit of files

src/libnet/udp_broadcast.c

@@ -0,0 +1,40 @@
+//
+// Neal Probert
+//
+
+#include "netlib.h"
+
+int udp_broadcast( const char *host, const char *service, struct sockaddr_storage *sa, socklen_t *len )
+{
+  /* socket stuff */
+  int sock, family;       /* tcp socket */
+  
+  if ( !host )
+    host = "255.255.255.255";
+  
+  // host
+  family = ip_host2addr( host, service, sa, len );
+  
+  if ( family != AF_INET )
+  {
+    log_error(host);
+    return -1;
+  }
+  
+  /* plug me into a socket */
+  if ( (sock = socket( family, SOCK_DGRAM, 0)) < 0 )
+  {
+    log_error("dgram_socket");
+    return -1;
+  }
+  
+  // ipv4 uses classic broadcast
+  u_int i = 1;
+  if ( setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &i, sizeof(i)) != 0 )
+  {
+    log_error("so_broadcast");
+    return -1;
+  }
+  
+  return sock;
+}