问题描述
我希望能够在我设计的托管框架内通过 WCF 托管和连接到 vanilla sockets 服务器.我希望能够使用 WCF 对当今必须由套接字程序员手动管理的传输和协议通信进行编码.这将使我能够与只公开传统套接字和专有协议的 Linux 服务器守护进程实现最终的互操作性.我现在只对使用 WcfTestClient 验证传输通道层感兴趣.我的理解是 WcfTestClient 不支持复杂的服务方法.
I would like to be able to both host and connect to a vanilla sockets server via WCF, within the hosting framework I am devising. I want to be able to use WCF to codify the transport and protocol communications that have to be manually managed by sockets programmers today. This would allow me the ultimate interoperability with Linux server daemons that expose nothing but traditional sockets and proprietary protocols. I am only interested in verifying that transport channel layer generically using WcfTestClient at this point. My understanding is that the WcfTestClient does not support complex service methods.
有人认为可以让 WcfTestClient 为自定义传输通道工作吗? 能够通用地使用这个客户端来测试任意数量的自定义传输通道真的很棒.
Does anybody think it is possible to make the WcfTestClient work for custom transport channels? It would be really sweet to be able to generically use this client to test any number of custom transport channels.
我正在努力了解 Windows SDK 中包含的 WCF Udp 示例，该示例通常位于 C:Program FilesMicrosoft SDKsWindowsv6.1SamplesWCFSamplesTechnologySamplesExtensibilityTransportUdpCS，假设 WCFSamples.zip 文件已从 Samples 目录中完全提取出来.
I am working to understand the WCF Udp sample that is included in the Windows SDK, located typically at C:Program FilesMicrosoft SDKsWindowsv6.1SamplesWCFSamplesTechnologySamplesExtensibilityTransportUdpCS, assuming that the WCFSamples.zip file is fully extracted from the Samples directory.
这些是我迄今为止采取的步骤:
These are the steps I have taken thus far:
(成功):在 Visual Studio 2008 中成功运行解决方案的服务和客户端.
(success): Run the solution's service and client successfully within Visual Studio 2008.
(成功):使用 WcfTestClient 连接到 MEX 端点，通常位于 C:Program FilesMicrosoft Visual Studio 9.0Common7IDE
(success): connect to a MEX endpoint using the WcfTestClient typically located at C:Program FilesMicrosoft Visual Studio 9.0Common7IDE
(失败):使用 WcfTestClient 尝试执行来自 ICalculatorContract 或 IDatagramContract 服务协定的方法.
(failure): use the WcfTestClient to attempt to execute a method from either the ICalculatorContract or the IDatagramContract service contract.
例如，当我执行 Hello() 方法时，我收到以下错误:
When I execute the Hello() method, for example, I receive the following error:
友情提示:
未能调用该服务.可能的原因:服务离线或无法访问；客户端配置不匹配代理人;现有代理无效.有关更多信息，请参阅堆栈跟踪细节.您可以尝试通过以下方式恢复启动一个新的代理，恢复到默认配置，或者刷新服务.
错误详情:
自定义绑定带合约的 ServiceEndpoint'IDatagramContract' 缺少传输绑定元素.每一个绑定必须至少有一个绑定派生自的元素传输绑定元素.在System.ServiceModel.Channels.Binding.EnsureInvariants(String合同名称)在System.ServiceModel.Description.ServiceEndpoint.EnsureInvariants()在System.ServiceModel.Channels.ServiceChannelFactory.BuildChannelFactory(ServiceEndpoint服务端点)在System.ServiceModel.ChannelFactory.CreateFactory()在System.ServiceModel.ChannelFactory.OnOpening()在System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan超时)在System.ServiceModel.ChannelFactory.EnsureOpened()在System.ServiceModel.ChannelFactory1.CreateChannel(EndpointAddress地址，Uri 通过)在System.ServiceModel.ChannelFactory1.CreateChannel()在System.ServiceModel.ClientBase1.CreateChannel()在System.ServiceModel.ClientBase1.CreateChannelInternal()在System.ServiceModel.ClientBase`1.get_Channel()在 DatagramContractClient.Hello()
了解客户端错误
UdpTransport 项目中定义的 UdpTransportBindingElement 肯定源自 TransportBindingElement，如下所示，所以我认为 WcfTestClient 配置文件中一定缺少某些东西和/或可能我必须以某种方式提供测试客户端更多信息.我基本上尝试将 Udp 解决方案的客户端项目的 System.ServiceModel 部分复制到 WcfTestClient 的配置文件中，并将传输程序集 dll 复制到与测试客户端相同的文件夹中，但我收到相同的错误.
Understanding the Client Error
The UdpTransportBindingElement that is defined in the UdpTransport project definitely derives from TransportBindingElement, as shown below, so I'm thinking that there must be something missing from the WcfTestClient configuration file and/or possibly that I have to somehow provide the test client with more information. I tried basically copying the System.ServiceModel section of the Udp solution's client project into the WcfTestClient's config file, as well as copying the transport assembly dll to the same folder as the test client, but I receive the same error.
我的理解是 MEX 端点应该足以获取在服务上调用简单方法所需的信息.当然，我知道这个故事可能还有更多内容，考虑到我正在尝试使一个旨在测试开箱即用传输通道与自定义传输通道一起工作的客户端.
My understanding is that the MEX endpoint should be enough to get the information required to invoke simple methods on the service. Of course, I understand that there is probably more to the story, considering that I'm trying to make a client that was designed to test the out-of-the-box transport channels work with custom transport channels.
/// <summary>
/// Udp Binding Element.
/// Used to configure and construct Udp ChannelFactories and ChannelListeners.
/// </summary>
public class UdpTransportBindingElement
: TransportBindingElement // to signal that we're a transport
, IPolicyExportExtension // for policy export
, IWsdlExportExtension
ITransportPolicyImport 对自定义传输通道重要吗?
我询问 ITransportPolicyImport，因为它是由 TransportBindingElement 的标准 WCF 派生实现的接口，但 Udp 示例没有实现该接口，而且我在 Web 搜索或 Safari 上找不到任何有用的东西.它甚至可能不相关.
Is ITransportPolicyImport Important for Custom Transport Channels?
I ask about ITransportPolicyImport because that is an interface that is implemented by the standard WCF derivations of TransportBindingElement, but the Udp sample does not implement this interface, and I cannot find anything useful in web searches or on Safari. It may not even be relevant.
例如...
public class HttpTransportBindingElement :
: TransportBindingElement
, IWsdlExportExtension
, IPolicyExportExtension
, ITransportPolicyImport
示例配置...
服务配置如下:
<system.serviceModel>
<!--
add our udpTransport handler for use by binding declarations
-->
<!--
add our standard binding handler for use by binding declarations
-->
<extensions>
<bindingElementExtensions>
<add name="udpTransport" type="Microsoft.ServiceModel.Samples.UdpTransportElement, UdpTransport" />
</bindingElementExtensions>
<bindingExtensions>
<add name="sampleProfileUdpBinding" type="Microsoft.ServiceModel.Samples.SampleProfileUdpBindingCollectionElement, UdpTransport" />
</bindingExtensions>
</extensions>
<services>
<service name="Microsoft.ServiceModel.Samples.ConfigurableCalculatorService" behaviorConfiguration="udpServiceBehavior">
<host>
<baseAddresses>
<add baseAddress="http://localhost:8000/udpsample"/>
</baseAddresses>
</host>
<endpoint address="soap.udp://localhost:8001/"
binding="sampleProfileUdpBinding"
bindingConfiguration="CalculatorServer"
contract="Microsoft.ServiceModel.Samples.ICalculatorContract" />
<endpoint address="soap.udp://localhost:8002/datagram"
binding="customBinding"
bindingConfiguration="DatagramServer"
contract="Microsoft.ServiceModel.Samples.IDatagramContract" />
<endpoint address="mex"
binding="mexHttpBinding"
contract="IMetadataExchange" />
</service>
</services>
<bindings>
<!--
server bindings
-->
<sampleProfileUdpBinding>
<binding name="CalculatorServer" clientBaseAddress="soap.udp://localhost:8003/" />
<binding name="DatagramServer" reliableSessionEnabled="false" />
</sampleProfileUdpBinding>
<customBinding>
<binding name="DatagramServer">
<binaryMessageEncoding />
<udpTransport/>
</binding>
</customBinding>
</bindings>
<behaviors>
<serviceBehaviors>
<behavior name="udpServiceBehavior">
<serviceMetadata httpGetEnabled="True"/>
</behavior>
</serviceBehaviors>
</behaviors>
<client>
<endpoint address="" binding="sampleProfileUdpBinding" bindingConfiguration="CalculatorServer"
contract="Microsoft.ServiceModel.Samples.ICalculatorContract"
name="CalculatorClient" />
</client>
</system.serviceModel>
解决方案中的客户端配置如下所示:
The client config from the solution looks like this:
<system.serviceModel>
<bindings>
<customBinding>
<binding name="CustomBinding_IDatagramContract">
<binaryMessageEncoding maxReadPoolSize="64" maxWritePoolSize="16"
maxSessionSize="2048">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
</binaryMessageEncoding>
<UpdTransportElementClientSide maxBufferPoolSize="524288" maxMessageSize="65536"
multicast="false" />
</binding>
</customBinding>
<sampleProfileUdpBinding>
<binding name="SampleProfileUdpBinding_ICalculatorContract" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
orderedSession="true" reliableSessionEnabled="true" sessionInactivityTimeout="00:10:00"
clientBaseAddress="soap.udp://localhost:8003/" />
</sampleProfileUdpBinding>
</bindings>
<client>
<endpoint address="soap.udp://localhost:8001/" binding="sampleProfileUdpBinding"
bindingConfiguration="SampleProfileUdpBinding_ICalculatorContract"
contract="ICalculatorContract" name="SampleProfileUdpBinding_ICalculatorContract" />
<endpoint address="soap.udp://localhost:8002/datagram" binding="customBinding"
bindingConfiguration="CustomBinding_IDatagramContract" contract="IDatagramContract"
name="CustomBinding_IDatagramContract" />
</client>
<extensions>
<bindingElementExtensions>
<add name="UpdTransportElementClientSide" type="Microsoft.ServiceModel.Samples.UdpTransportElement, UdpTransport" />
</bindingElementExtensions>
<!-- This was added manually because svcutil.exe does not add this extension to the file -->
<bindingExtensions>
<add name="sampleProfileUdpBinding" type="Microsoft.ServiceModel.Samples.SampleProfileUdpBindingCollectionElement, UdpTransport" />
</bindingExtensions>
</extensions>
</system.serviceModel>
推荐答案
可以在 WCF 中创建自定义传输.不过还是挺投入的！
It is possible to create custom transports in WCF. It's quite involved though!
Roman Kiss 构建了一个空传输，允许您在同一进程内使用和托管服务，而无需通过其中一个内置传输来编组数据的开销.他的 CodePlex 文章位于:
Roman Kiss has built a Null Transport that allows you to consume and host the services from within the same process without the overhead of marshalling the data through one of the built in transports. His CodePlex article is available at:
http://www.codeproject.com/KB/WCF/NullTransportForWCF.aspx
这可能是帮助您学习如何构建自己的交通工具的一个很好的起点.祝你好运！
It may be a good starting point for helping you learn how to build your own transport. Good luck!
这篇关于是否可以使 WcfTestClient 用于自定义传输通道?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！