From 6cd438ba896c48caa4194fb7381d91eae33b9461 Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@gmail.com>
Date: Mon, 7 Nov 2016 17:21:28 +0200
Subject: [PATCH] LBClient: panic on empty Clients

---
 lbclient.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lbclient.go b/lbclient.go
index 5dadaef..17f1f57 100644
--- a/lbclient.go
+++ b/lbclient.go
@@ -84,6 +84,9 @@ func (cc *LBClient) Do(req *Request, resp *Response) error {
 }
 
 func (cc *LBClient) init() {
+	if len(cc.Clients) == 0 {
+		panic("BUG: LBClient.Clients cannot be empty")
+	}
 	for _, c := range cc.Clients {
 		cc.cs = append(cc.cs, &lbClient{
 			c:           c,