From 63128e40f5692d1e6fc0f0420fafcd5fffb08158 Mon Sep 17 00:00:00 2001
From: xinghenLuyus <2593026969@qq.com>
Date: Fri, 26 Dec 2025 14:32:15 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=20common.h?=
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---
 common.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 common.h

diff --git a/common.h b/common.h
new file mode 100644
index 0000000..5c7eb17
--- /dev/null
+++ b/common.h
@@ -0,0 +1,22 @@
+#ifndef COMMON_H
+#define COMMON_H
+
+#include <stdint.h>
+
+#define TYPE_DATA 0
+#define TYPE_ACK  1
+
+#define PORT 9000
+#define BUF_SIZE 1024
+#define TIMEOUT_SEC 2
+
+/* 应用层协议数据包 */
+#pragma pack(push, 1)
+struct packet {
+    uint8_t seq;          // 停等协议序号：0 / 1
+    uint8_t type;         // 0=DATA, 1=ACK
+    char payload[BUF_SIZE - 2];
+};
+#pragma pack(pop)
+
+#endif