From dc0cbce6e1d75858ba00684b960158098cdd944a Mon Sep 17 00:00:00 2001
From: Darien Raymond <admin@v2ray.com>
Date: Sun, 6 Nov 2016 14:04:44 +0100
Subject: [PATCH] optimize pickString

---
 transport/internet/authenticators/http/config.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/transport/internet/authenticators/http/config.go b/transport/internet/authenticators/http/config.go
index 953d89a4e..62a1a8c43 100644
--- a/transport/internet/authenticators/http/config.go
+++ b/transport/internet/authenticators/http/config.go
@@ -35,10 +35,14 @@ func (this *Status) GetReason() string {
 
 func pickString(arr []string) string {
 	n := len(arr)
-	if n == 0 {
+	switch n {
+	case 0:
 		return ""
+	case 1:
+		return arr[0]
+	default:
+		return arr[dice.Roll(n)]
 	}
-	return arr[dice.Roll(n)]
 }
 
 func (this *RequestConfig) PickUri() string {