OPC UA 客户端连接服务器返回的 EndpointUrl 为什么会变成opc:tcp://0.0.0.0:4840

2017-01-16 02:23:27 1.6k 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

工业互联网OPC UA通信故障排查：Wireshark协议分析实战指南在工业互联网与智能制造领域，实现设备间可靠数据互通是核心需求。OPC UA作为统一架构的通信协议，其安全性与互操作性是连接IT与OT层的关键。理解其通信原理，对于保障工业现场数据流稳定至关重要。当面临连接中断、数据读写异常等典型故障时，协议层面的深入分析成为定位根因的有效手段。Wireshark作为网络协议分析工具，能够捕获并解码原始数据包，将OPC UA的握手、安全通道建立、数据订阅等交互过程可视化。通过分析TCP连接状态、OPC UA特定报文（如Hello、OpenSecureChannel）及状态码，阅读详情

客户端传过去的 Url 为 opc.tcp://190.160.9.219:4840 处理完后得到的 endpoint.EndpointUrl=opc.tcp://0.0.0.0:4840，为什么会这样呢？

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OPC UA工业协议安全实战：X.509证书与AES加密配置指南在工业自动化和物联网（IIoT）领域，数据交换的安全性是保障生产系统稳定运行的核心。其原理基于加密技术与身份验证机制，旨在确保通信的机密性和完整性。从技术价值看，这不仅是满足合规要求，更是防止数据泄露、抵御网络攻击的关键。在智能制造、SCADA系统等应用场景中，OPC UA协议因其跨平台和高安全性已成为标准。本文聚焦于OPC UA安全配置的工程实践，深入解析X.509证书的生命周期管理，涵盖自签名证书生成、信任列表配置等关键环节，并阐述AES加密在安全策略中的实际应用，帮助开发者解决证书无效、连接失败等常见阅读详情

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切换为时间正序

jwh2004 2017-01-18

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没用过你这个，这是什么dll，OPC中国上的吗还是哪里的

ChenMooMo 2017-01-16

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求大神帮忙解答，

ChenMooMo 2017-01-16

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代码：

public void Connect(string Url)
        {
            try
            {
                // Create the configuration.     
                ApplicationConfiguration configuration = Helpers.CreateClientConfiguration();

                // Create the endpoint description.
                EndpointDescription endpointDescription = Helpers.CreateEndpointDescription(Url);

                // Create the endpoint configuration (use the application configuration to provide default values).
                EndpointConfiguration endpointConfiguration = EndpointConfiguration.Create(configuration);

                // The default timeout for a requests sent using the channel.
                endpointConfiguration.OperationTimeout = 300000;

                // Use the pure binary encoding on the wire.
                endpointConfiguration.UseBinaryEncoding = true;

                // Create the endpoint.
                ConfiguredEndpoint endpoint = new ConfiguredEndpoint(null, endpointDescription, endpointConfiguration);

                // Create the binding factory.
                BindingFactory bindingFactory = BindingFactory.Create(configuration);

                // Update endpoint description using the discovery endpoint.
                if (endpoint.UpdateBeforeConnect)
                {
                    endpoint.UpdateFromServer(bindingFactory);
                    endpointDescription = endpoint.Description;
                    endpointConfiguration = endpoint.Configuration;
                }

                //endpoint.EndpointUrl = new Uri("opc.tcp://190.160.9.219:4840");

                X509Certificate2 clientCertificate = configuration.SecurityConfiguration.ApplicationCertificate.Find();

                // Set up a callback to handle certificate validation errors.
                configuration.CertificateValidator.CertificateValidation += new CertificateValidationEventHandler(CertificateValidator_CertificateValidation);

                // Initialize the channel which will be created with the server.
                SessionChannel channel = SessionChannel.Create(
                    configuration,
                    endpointDescription,
                    endpointConfiguration,
                    bindingFactory,
                    clientCertificate,
                    null);

                // Wrap the channel with the session object.
                // This call will fail if the server does not trust the client certificate.
                m_Session = new Session(channel, configuration, endpoint);
                m_Session.ReturnDiagnostics = DiagnosticsMasks.All;

                // Register keep alive callback.
                m_Session.KeepAlive += new KeepAliveEventHandler(Session_KeepAlive);

                UserIdentity identity = new UserIdentity();

                // Create the session. This actually connects to the server.
                // Passing null for the user identity will create an anonymous session.
                m_Session.Open("ClientUA_1", identity);
            }
            catch (Exception e)
            {
                throw e;
            }
        }

ChenMooMo 2017-01-16

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代码：


public void Connect(string Url)
        {
            try
            {
                // Create the configuration.     
                ApplicationConfiguration configuration = Helpers.CreateClientConfiguration();

                // Create the endpoint description.
                EndpointDescription endpointDescription = Helpers.CreateEndpointDescription(Url);

                // Create the endpoint configuration (use the application configuration to provide default values).
                EndpointConfiguration endpointConfiguration = EndpointConfiguration.Create(configuration);

                // The default timeout for a requests sent using the channel.
                endpointConfiguration.OperationTimeout = 300000;

                // Use the pure binary encoding on the wire.
                endpointConfiguration.UseBinaryEncoding = true;

                // Create the endpoint.
                ConfiguredEndpoint endpoint = new ConfiguredEndpoint(null, endpointDescription, endpointConfiguration);

                // Create the binding factory.
                BindingFactory bindingFactory = BindingFactory.Create(configuration);

                // Update endpoint description using the discovery endpoint.
                if (endpoint.UpdateBeforeConnect)
                {
                    endpoint.UpdateFromServer(bindingFactory);
                    endpointDescription = endpoint.Description;
                    endpointConfiguration = endpoint.Configuration[code=csharp]

; } X509Certificate2 clientCertificate = configuration.SecurityConfiguration.ApplicationCertificate.Find(); // Set up a callback to handle certificate validation errors. configuration.CertificateValidator.CertificateValidation += new CertificateValidationEventHandler(CertificateValidator_CertificateValidation); // Initialize the channel which will be created with the server. SessionChannel channel = SessionChannel.Create( configuration, endpointDescription, endpointConfiguration, bindingFactory, clientCertificate, null); // Wrap the channel with the session object. // This call will fail if the server does not trust the client certificate. m_Session = new Session(channel, configuration, endpoint); m_Session.ReturnDiagnostics = DiagnosticsMasks.All; // Register keep alive callback. m_Session.KeepAlive += new KeepAliveEventHandler(Session_KeepAlive); UserIdentity identity = new UserIdentity(); // Create the session. This actually connects to the server. // Passing null for the user identity will create an anonymous session. m_Session.Open("ClientUA_1", identity); } catch (Exception e) { throw e; } } [/code]

OPC UA 客户端 连接 服务器返回的 EndpointUrl 为什么会变成opc:tcp://0.0.0.0:4840

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OPC UA 客户端连接服务器返回的 EndpointUrl 为什么会变成opc:tcp://0.0.0.0:4840