--- libelwix/src/net.c	2016/08/02 11:25:58	1.14
+++ libelwix/src/net.c	2016/08/02 11:44:05	1.14.2.1
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: net.c,v 1.14 2016/08/02 11:25:58 misho Exp $
+* $Id: net.c,v 1.14.2.1 2016/08/02 11:44:05 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -256,7 +256,7 @@ e_n2addr(sockaddr_t * __restrict addr, ait_val_t * __r
  * @psHost = Hostname
  * @port = Port
  * @addr = Network address structure
- * return: 0 error or >0 network structure length
+ * return: 0 is error or >0 length of network structure
  */
 socklen_t 
 e_gethostbyname(const char *psHost, u_short port, sockaddr_t * __restrict addr)
@@ -313,6 +313,34 @@ e_gethostbyname(const char *psHost, u_short port, sock
 	}
 
 	return 0;
+}
+
+/*
+ * e_addrlen() - Get address length from network structure
+ *
+ * @addr = address
+ * return: 0 is error or >0 length of network structure
+ */
+socklen_t
+e_addrlen(const sockaddr_t *addr)
+{
+	if (!addr)
+		return 0;
+
+	switch (addr->sa.sa_family) {
+		case AF_INET:
+			return sizeof addr->sin;
+		case AF_INET6:
+			return sizeof addr->sin6;
+		case AF_LOCAL:
+			return sizeof addr->sun;
+#ifndef __linux__
+		case AF_LINK:
+			return sizeof addr->sdl;
+#endif
+	}
+
+	return MIN(sizeof(sockaddr_t), 0xff);
 }
 
 /*