From ffd68d6c81fdc4d8d9b1570e7d86d6f0a911c043 Mon Sep 17 00:00:00 2001
From: XinJun Ma <xinjun.ma@qq.com>
Date: Sun, 31 Dec 2023 18:23:55 +0800
Subject: [PATCH] =?UTF-8?q?=E9=81=B5=E5=BE=AA=20DPD-REQ=20=E5=8D=8F?=
 =?UTF-8?q?=E8=AE=AE=EF=BC=8C=E4=BF=AE=E5=A4=8D=20OpenConnect=20DTLS=20?=
 =?UTF-8?q?=E7=9A=84=20MTU=20=E6=8E=A2=E6=B5=8B?=
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---
 server/handler/link_dtls.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/server/handler/link_dtls.go b/server/handler/link_dtls.go
index 1888675..2656855 100644
--- a/server/handler/link_dtls.go
+++ b/server/handler/link_dtls.go
@@ -64,6 +64,7 @@ func LinkDtls(conn net.Conn, cSess *sessdata.ConnSession) {
 		case 0x03: // DPD-REQ
 			// base.Debug("recv DPD-REQ", cSess.IpAddr)
 			pl.PType = 0x04
+			pl.Data = pl.Data[:n]
 			if payloadOutDtls(cSess, dSess, pl) {
 				return
 			}
@@ -149,7 +150,7 @@ func dtlsWrite(conn net.Conn, dSess *sessdata.DtlsSession, cSess *sessdata.ConnS
 			}
 		} else {
 			// 设置头类型
-			pl.Data = append(pl.Data[:0], pl.PType)
+			pl.Data[0] = pl.PType
 		}
 		n, err := conn.Write(pl.Data)
 		if err != nil {