--- libaitrpc/src/cli.c	2012/05/17 12:52:30	1.9.2.8
+++ libaitrpc/src/cli.c	2012/05/17 14:22:24	1.9.2.9
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: cli.c,v 1.9.2.8 2012/05/17 12:52:30 misho Exp $
+* $Id: cli.c,v 1.9.2.9 2012/05/17 14:22:24 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -235,8 +235,8 @@ rpc_cli_closeClient(rpc_cli_t ** __restrict cli)
  * @cli = RPC Client session
  * @noreply = We not want RPC reply
  * @tag = Function tag for execution
- * @in_vars = IN RPC call array of rpc values
- * @out_vars = OUT returned array of rpc values, must be free after use with rpc_cli_freeVals()
+ * @in_vars = IN RPC call array of rpc values, may be NULL
+ * @out_vars = OUT returned array of rpc values, if !=NULL must be free after use with io_freeVars()
  * return: -1 error or != -1 ok result
  */
 int
@@ -349,14 +349,39 @@ rpc_cli_execCall(rpc_cli_t *cli, int noreply, u_short 
 	}
 
 	/* RPC is OK! Go de-marshaling variables ... */
-	if (ntohs(rpc->call_argc)) {
+	if (out_vars && ntohs(rpc->call_argc)) {
 		*out_vars = io_buffer2vars(buf + wlen, AIT_LEN(&cli->cli_buf) - wlen, 
 				ntohs(rpc->call_argc), 0);
 		if (!*out_vars) {
+			rpc_SetErr(io_GetErrno(), "%s", io_GetError());
 			return -1;
 		}
 	}
 
 	ret = ntohl(rpc->call_rep.ret);
+	return ret;
+}
+
+/*
+ * rpc_cli_ping() - Ping RPC server
+ *
+ * @cli = connected client
+ * return: -1 error or !=-1 ping seq id
+ */
+inline int
+rpc_cli_ping(rpc_cli_t *cli)
+{
+	array_t *arr;
+	int ret = 0;
+
+	if (!cli)
+		return -1;
+
+	if (rpc_cli_execCall(cli, RPC_REPLY, CALL_SRVPING, NULL, &arr))
+		return -1;
+	else
+		ret = AIT_GET_U16(io_getVars(arr, 0));
+	io_freeVars(&arr);
+
 	return ret;
 }