从WCF服务调用WPF客户端的单向回调时,我总是收到这个令人费解的错误。
它发送的数据不是太多,而只是一个字符串列表,其中仅包含一个短字符串。
我的服务器具有以下配置:
<xml version="1.0"?>
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0" />
</system.web>
<system.serviceModel>
<services>
<service name="RawDealService.GameService">
<endpoint address ="" binding="wsDualHttpBinding" bindingConfiguration="basicConfig" contract="MyService.IGameService">
<identity>
<dns value="localhost"/>
</identity>
</endpoint>
</service>
</services>
<bindings>
<wsDualHttpBinding>
<binding name="basicConfig" messageEncoding="Text">
<security mode="None"/>
</binding>
</wsDualHttpBinding>
</bindings>
<behaviors>
<serviceBehaviors>
<behavior>
<!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
<serviceMetadata httpGetEnabled="true"/>
<!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
<serviceDebug includeExceptionDetailInFaults="true"/>
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
</configuration>
而且我的客户端具有以下配置:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.serviceModel>
<bindings>
<wsDualHttpBinding>
<binding name="WSDualHttpBinding_IGameService" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<reliableSession ordered="true" inactivityTimeout="00:10:00" />
<security mode="None">
<message clientCredentialType="Windows" negotiateServiceCredential="true" />
</security>
</binding>
</wsDualHttpBinding>
</bindings>
<client>
<endpoint address="http://localhost:44259/GameService.svc" binding="wsDualHttpBinding"
bindingConfiguration="WSDualHttpBinding_IGameService" contract="IGameService"
name="WSDualHttpBinding_IGameService">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
</client>
</system.serviceModel>
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0" />
</startup>
</configuration>
鉴于消息相对较小且回调仅是单向的,因此可能发生这种情况令人感到莫名其妙。我应该尝试一些其他的绑定(bind)吗?
最佳答案
我发现了问题,不幸的是,这个特殊的错误消息使我走上了一条完全错误的道路。
我的DataContract设置中有一些带有继承的类,并且我没有正确标记KnownType
。
我的猜测是客户端在某个时候尝试反序列化关联对象而失败。该错误一定不是框架已经过妥善处理的,也许它一直试图反复发送,一分钟后没有任何响应。
也许如果我进行双向调用,我将获得更多信息,堆栈跟踪。