基于doipclient设置一个简易的诊断服务工具

python-doipclient:

doipclient is a pure Python 3 Diagnostic over IP (DoIP) client which can be used for communicating with modern ECU's over automotive ethernet. It implements the majority of ISO-13400 (2019) from the perspective of a short-lived synchronous client. The primary use case is to serve as a transport layer implementation for the udsoncan library.

doipclient是一个纯Python 3 IP诊断(DoIP)客户端，可用于与ECU的汽车以太网通信。它从客户端的角度实现了ISO-13400(2019)的大部分内容。主要是作为udsoncan库的传输层实现

doipclient github网址链接:https://github.com/jacobschaer/python-doipclient

首先我们看一下github上面给出的例子，通过例子来说明一下实现简易诊断服务工具的框架。

import udsoncan
from doipclient import DoIPClient
from udsoncan.services import *
from doipclient.connectors import DoIPClientUDSConnector
from udsoncan.client import Client

udsoncan.setup_logging()
ecu_ip = '127.0.0.1'
ecu_logical_address = 0x00E0
doip_client = DoIPClient(ecu_ip, ecu_logical_address)
conn = DoIPClientUDSConnector(doip_client)
with Client(conn, request_timeout=2) as client:
   try:
      client.change_session(DiagnosticSessionControl.Session.extendedDiagnosticSession)
   except NegativeResponseException as e:
      print('Server refused our request for service %s with code "%s" (0x%02x)' % (e.response.service.get_name(), e.response.code_name, e.response.code))
   except (InvalidResponseException, UnexpectedResponseException) as e:
      print('Server sent an invalid payload : %s' % e.response.original_payload)
   doip_client.reconnect()
   client.tester_present()
doip_client.close()

1. 导入DoIPClient 工具类，该工具类基于socket客户端之上实现数据接收，发送，数据校验等方法

2. 导入uds服务协议工厂类，里面包含了各种uds服务，可续可以用通过该工厂类构建应用层协议(ISO14229-1)数据

3. 导入一个doipclient conector 通过该conentor将ISO14229-1协议数据包和ISO-13400以及TCP/IP协议连接起来

以上代码我们通过抓包可以发现数据已经发送通过通过网卡发送出去，数据如下

以下是基于doipclient和pyqt5实现的一个应用程序界面，读者可以根据实际需求进行相应的定制开发。文章来源地址https://www.toymoban.com/news/detail-420905.html