无法在 wireshark 中看到 OPCUA 协议

Question

创建了一个简单的客户端和服务器并尝试在 wireshark 中捕获操作，但无法在其中看到 OPC UA 协议。我在 windows 10 上的 pycharm 中完成了这段代码你能指出问题出在哪里吗在 wireshark 中查看 OPCUA 协议我添加了我使用过的服务器代码，还添加了客户端代码并将 wireshark 图像附加为 png 文件服务器代码：

from opcua import Server
from random import randint
from xlwt import Workbook
import datetime
import time

server = Server()
workbook = Workbook()
sheet = workbook.add_sheet('sheet 1')
#sheet.write(j, 0, time.time())
#workbook.save("sub_ohio_latency_ACK.xls")
url = "opc.tcp://LAPTOP-9UCODEJ5:48020"

server.set_endpoint(url)
name = "OPCUA_Server"
addspace = server.register_namespace(name)

node = server.get_objects_node()

Param = node.add_object(addspace, "Parameters")

Temp = Param.add_variable(addspace, "Temperature",0)
Time = Param.add_variable(addspace, "Time",0)
i = Param.add_variable(addspace, "TagID", 0)

Temp.set_writable()
Time.set_writable()


l = server.get_objects_node()
p = server.get_node(Temp)
k = server.get_node(Time)
j = server.get_node(i)

print(k)
print(p)
print(l)
print(j)

server.start()
print("server started at ()".format(url))
c = 0
while True:

    Temperature = randint(0,20)
    TIME = datetime.datetime.now()
    TagID = c
    print(Temperature, TIME, c)

    Temp.set_value(Temperature)
    Time.set_value(TIME)
    i.set_value(c)
    c += 1
    #time.sleep(2)

客户代码

from opcua import Client
import time
from xlwt import Workbook

workbook =Workbook()
#workbook2=Workbook()
sheet = workbook.add_sheet('sheet 1')

url = "opc.tcp://192.168.0.108:48020"

client = Client(url)
client.connect()
print("client connected")

for i in range(2000):
    objects = client.get_objects_node()
    l = client.get_node("ns=2;i=2")
    Temperature = l.get_value()
    #print(Temperature)
    k = client.get_node("ns=2;i=3")
    Time = k.get_value()
    j = client.get_node("ns=2;i=4")
    msg_tag = j.get_value()
    sheet.write(i, 0, msg_tag)
    sheet.write(i, 1, Temperature)
    sheet.write(i, 2, Time)
    sheet.write(i,3,time.time())
    workbook.save("test_client.xls")
    #print(Time)
    #print(msg_tag)
    #print(objects)
    #time.sleep(5)
client.disconnect()
print("client disconnected")

WIreshark Ref

Answer 1

默认情况下，Wireshark OPC UA 显示过滤器仅适用于默认 OPC UA TCP 端口 (4840)

由于您使用另一个端口 (48020)，您需要更新将与 OPC UA 二进制协议关联的 TCP 端口列表，以便让 Wireshark 知道它需要将这些端口上的数据包解码为 OPC UA数据包。

您可以在此处更新列表： Wireshark - 编辑 - 首选项 - 协议 - OpcUa - TCP 端口

无法在 wireshark 中看到 OPCUA 协议

Unable to see OPCUA protocol in wireshark

python

excel

wireshark

pycharm

opc-ua