From d83a64e3b9e43197650cdf2eddab3d6632821e0b Mon Sep 17 00:00:00 2001
From: alex_hold <8038944+alex-hold@user.noreply.gitee.com>
Date: Thu, 3 Jun 2021 20:39:28 +0800
Subject: [PATCH] =?UTF-8?q?=E8=A7=A3=E5=86=B3hdc=20sn=E5=8F=B7256=E4=BD=8D?=
 =?UTF-8?q?=E9=97=AE=E9=A2=98?=
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---
 extension/src/xdevice_extension/_core/environment/dmlib.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/extension/src/xdevice_extension/_core/environment/dmlib.py b/extension/src/xdevice_extension/_core/environment/dmlib.py
index 7b45727..5fd3332 100644
--- a/extension/src/xdevice_extension/_core/environment/dmlib.py
+++ b/extension/src/xdevice_extension/_core/environment/dmlib.py
@@ -1056,8 +1056,8 @@ class HdcHelper:
         reply_size = struct.unpack(">I12s24s", reply)
         banner_str = b'OHOS HDC'
         connect_key = connect_key.encode("utf-8")
-        size = struct.calcsize('12s24s')
-        fmt = "!I12s24s"
+        size = struct.calcsize('12s256s')
+        fmt = "!I12s256s"
         pack_cmd = struct.pack(fmt, size, banner_str, connect_key)
         HdcHelper.write(connection, pack_cmd)
         return True
-- 
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