wpf - WCF:单向回调有问题

Question

在从 WCF 服务调用 WPF 客户端的单向回调时，我不断收到这个令人费解的错误。

The message could not be transferred within the allotted timeout of 00:01:00. There was no space available in the reliable channel's transfer window. The time allotted to this operation may have been a portion of a longer timeout.

它不会发送太多数据，只是一个字符串列表，其中只有一个短字符串。

我的服务器有以下配置:

<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>

我的客户有以下配置:

<?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>

考虑到消息相对较小并且回调只是单向的，这可能会发生，这只是令人困惑。我应该尝试一些不同的绑定(bind)吗？

Answer 1

我发现了这个问题，不幸的是，这个特定的错误消息让我走上了一条完全错误的道路。

我的 DataContract 设置中有一些具有继承的类，我没有正确标记 KnownType s。

我的猜测是在某些时候客户端试图反序列化关联的对象并失败。框架一定没有很好地处理错误，也许它一直试图一遍又一遍地发送，一分钟后没有得到响应。

也许如果我有一个双向调用，我会得到更多信息的堆栈跟踪。