Merge pull request 'main' (#36) from sangge/mimajingsai:main into main

Reviewed-on: dqy/mimajingsai#36

src/client.py

@@ -381,8 +381,17 @@ async def receive_request(i_m: IP_Message):
 
 
 def get_own_ip() -> str:
-    ip = os.environ.get("HOST_IP", "IP not set")
-    return ip
+    ip = os.environ.get("HOST_IP")
+    if not ip:  # 如果环境变量中没有IP
+        try:
+            # 从网卡获取IP
+            s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+            s.connect(("8.8.8.8", 80))  # 通过连接Google DNS获取IP
+            ip = s.getsockname()[0]
+            s.close()
+        except:
+            raise ValueError("Unable to get IP")
+    return str(ip)
 
 
 # get node list from central server