From 1a1383c2ea947886384a928101d3d1aae36b5ba4 Mon Sep 17 00:00:00 2001
From: Darien Raymond <admin@v2ray.com>
Date: Fri, 18 Nov 2016 21:34:42 +0100
Subject: [PATCH] simplify random

---
 transport/internet/udp/hub.go | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/transport/internet/udp/hub.go b/transport/internet/udp/hub.go
index a0fdf2956..6eea8668a 100644
--- a/transport/internet/udp/hub.go
+++ b/transport/internet/udp/hub.go
@@ -41,15 +41,16 @@ func NewUDPPayloadQueue(option ListenOption) *UDPPayloadQueue {
 
 func (this *UDPPayloadQueue) Enqueue(payload UDPPayload) {
 	size := len(this.queue)
+	idx := 0
+	if size > 1 {
+		idx = dice.Roll(size)
+	}
 	for i := 0; i < size; i++ {
-		idx := 0
-		if size > 1 {
-			idx = dice.Roll(size)
-		}
 		select {
-		case this.queue[idx] <- payload:
+		case this.queue[idx%size] <- payload:
 			return
 		default:
+			idx++
 		}
 	}
 }