From 982274e834142bc8bea703076ae3eecb40f52baf Mon Sep 17 00:00:00 2001
From: laiwei <laiwei.ustc@gmail.com>
Date: Thu, 23 Oct 2014 12:48:56 +0800
Subject: [PATCH] ping rrd-cached

---
 src/rrd_daemon.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/rrd_daemon.c b/src/rrd_daemon.c
index 4e9be7e8..f34d08af 100644
--- a/src/rrd_daemon.c
+++ b/src/rrd_daemon.c
@@ -295,6 +295,7 @@ static void journal_rotate(void);
 
 /* prototypes for forward refernces */
 static int handle_request_help (HANDLER_PROTO);
+static int handle_request_ping (HANDLER_PROTO);
 
 /*
  * Functions
@@ -2366,6 +2367,14 @@ static command_t list_of_commands[] = { /* {{{ */
     "HELP [<command>]\n",
     NULL, /* special! */
   },
+  {
+    "PING",
+    handle_request_ping,
+    CMD_CONTEXT_CLIENT,
+    "PING\n"
+    ,
+    "PING given, PONG returned\n"
+  },
   {
     "BATCH",
     batch_start,
@@ -2605,6 +2614,11 @@ static int handle_request_help (HANDLER_PROTO) /* {{{ */
   return send_response(sock, RESP_OK, resp_txt);
 } /* }}} int handle_request_help */
 
+static int handle_request_ping (HANDLER_PROTO) /* {{{ */
+{
+  return send_response(sock, RESP_OK, "%s\n", "PONG");
+} /* }}} int handle_request_ping */
+
 static int handle_request (DISPATCH_PROTO) /* {{{ */
 {
   char *buffer_ptr = buffer;
-- 
2.47.3