From b977899926da99484ca6b891dc36ec799a7b1d9f Mon Sep 17 00:00:00 2001
From: hmol233 <82594500+hmol233@users.noreply.github.com>
Date: Mon, 14 Jun 2021 20:40:17 +0800
Subject: [PATCH] Check buffer before releasing

to avoid `extending out of bound` issue in some cases
---
 common/buf/buffer.go | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/common/buf/buffer.go b/common/buf/buffer.go
index 9eef9997..7c8f965d 100644
--- a/common/buf/buffer.go
+++ b/common/buf/buffer.go
@@ -27,7 +27,7 @@ type Buffer struct {
 // New creates a Buffer with 0 length and 2K capacity.
 func New() *Buffer {
 	return &Buffer{
-		v: pool.Get().([]byte),
+		v: buf,
 	}
 }
 
@@ -64,7 +64,10 @@ func (b *Buffer) Release() {
 	p := b.v
 	b.v = nil
 	b.Clear()
-	pool.Put(p)
+
+	if cap(p) >= Size {
+		pool.Put(p)
+	}
 	b.UDP = nil
 }