Question

我正在尝试将一个大字符串（24,000到50,000个字符）传递给自托管的TCP WCF服务。

我已将maxStringContentLength（无处不在）提升至22008192。

我在某处读到我需要将bindingConfiguration更改为“LargeBuffer”或“LongFields”，但是当我这样做时：

<endpoint address="" binding="netTcpBinding" bindingConfiguration="LongFields"
  contract="ExStreamWCF.IService1">

或者这个：

<endpoint address="" binding="netTcpBinding" bindingConfiguration="LargeBuffer"
  contract="ExStreamWCF.IService1">

我的服务无法启动。我真的需要这个错误才能消失。有什么想法吗？

谢谢，

杰森

PS - 来自服务器上tcp服务的配置文件：

<system.serviceModel>
<services>
  <service behaviorConfiguration="ExStreamWCF.Service1Behavior"
    name="ExStreamWCF.Service1">
    <endpoint address="" binding="netTcpBinding" bindingConfiguration=""
      contract="ExStreamWCF.IService1">
      <identity>
        <dns value="Devexstream-2.anchorgeneral.local" />
        <!--<dns value="vmwin2k3sta-tn2" />-->
      </identity>
    </endpoint>
    <endpoint address="mex" binding="mexTcpBinding" bindingConfiguration=""
      contract="IMetadataExchange" />
    <host>
      <baseAddresses>
        <add baseAddress="net.tcp://Devexstream-2:8080/Service" />
        <!--<add baseAddress="net.tcp://vmwin2k3sta-tn2:8080/Service" />-->
      </baseAddresses>
    </host>
  </service>
</services>
<behaviors>
  <serviceBehaviors>
    <behavior name="ExStreamWCF.Service1Behavior">
      <serviceMetadata httpGetEnabled="false" />
      <serviceDebug includeExceptionDetailInFaults="true" />
    </behavior>
  </serviceBehaviors>
</behaviors>

编辑：按要求绑定

    <system.serviceModel>
    <bindings>
<netTcpBinding>
<binding name="NetTcpBinding_IService1" closeTimeout="00:01:00"
 openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
 transactionFlow="false" transferMode="Buffered" transactionProtocol="OleTransactions"
 hostNameComparisonMode="StrongWildcard" listenBacklog="10" maxBufferPoolSize="524288"
 maxBufferSize="2565536" maxConnections="10" maxReceivedMessageSize="2565536">
 <readerQuotas maxDepth="22008192" maxStringContentLength="22008192" maxArrayLength="2516384"
  maxBytesPerRead="22008192" maxNameTableCharCount="22008192" />
 <reliableSession ordered="true" inactivityTimeout="00:10:00"
  enabled="false" />
 <security mode="Transport">
  <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
  <message clientCredentialType="Windows" />
 </security>
</binding>

</netTcpBinding>
</bindings>

客户端端点：

<client>
<endpoint address="net.tcp://devexstream-2:8080/Service" binding="netTcpBinding"
bindingConfiguration="NetTcpBinding_IService1" contract="TCPService.IService1"
         name="NetTcpBinding_IService1">
<identity>
 <servicePrincipalName value="TCPService\Devexstream-2" />
 <dns value="Devexstream-2.anchorgeneral.local" />
</identity>
</endpoint>

我已经编辑了服务（如下所示），但现在服务无法启动。新的app.config：

<system.serviceModel>
<bindings>
  <netTcpBinding>
    <binding name="ExStreamWCFBinding" closeTimeout="00:00:05" openTimeout="00:00:05" receiveTimeout="00:00:05" sendTimeout="00:00:05" transferMode="Buffered" transactionProtocol="OleTransactions" hostNameComparison="StrongWildCard" maxBufferPoolSize="524288" maxBufferSize="524288" maxConnections="10" maxReceivedMessageSize="5242880">
      <readerQuotas maxDepth="32" maxStringContentLength="5242880" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" />
    </binding>
  </netTcpBinding>
</bindings>
<services>
  <service behaviorConfiguration="ExStreamWCF.Service1Behavior"
    name="ExStreamWCF.Service1">
    <endpoint address="" binding="netTcpBinding" bindingConfiguration="ExStreamWCFBinding"
      contract="ExStreamWCF.IService1">
      <identity>
        <dns value="Devexstream-2.anchorgeneral.local" />
        <!--<dns value="vmwin2k3sta-tn2" />-->
      </identity>
    </endpoint>
    <endpoint address="mex" binding="mexTcpBinding" bindingConfiguration=""
      contract="IMetadataExchange" />
    <host>
      <baseAddresses>
        <add baseAddress="net.tcp://Devexstream-2:8080/Service" />
        <!--<add baseAddress="net.tcp://vmwin2k3sta-tn2:8080/Service" />-->
      </baseAddresses>
    </host>
  </service>
</services>
<behaviors>
  <serviceBehaviors>
    <behavior name="ExStreamWCF.Service1Behavior">
      <serviceMetadata httpGetEnabled="false" />
      <serviceDebug includeExceptionDetailInFaults="true" />
    </behavior>
  </serviceBehaviors>
</behaviors>

Answer 1

bindingConfiguration需要具有您分配给netTcpinding元素的名称 - “LargeBuffer”或“LongFields”并不意味着什么，除非配置文件中有一个具有该名称的绑定元素。这就是为什么当你把它放入时你的服务无法启动 - 你很可能得到某种配置错误信息，我打赌。

要覆盖maxStringContentLength的默认8192设置，请执行以下操作：

在配置文件中创建一个Binding元素，该元素具有maxStringContentLength所需的大小，并在name属性中为其命名。
在endpoint元素中，将上面步骤1中的名称指定给属性bindingConfiguration。

如果您没有为端点指定绑定配置，则该服务将使用默认值。

例如，将您的配置文件放在上面。在标记下，添加以下绑定配置（请注意，您使用的特定值和可选属性将根据您的服务需求而有所不同）：

<bindings>
  <netTcpBinding>
    <binding name="ExStreamWCFBinding" closeTimeout="00:00:05" openTimeout="00:00:05" receiveTimeout="00:00:05" sendTimeout="00:00:05" transferMode="Buffered" transactionProtocol="OleTransactions" hostNameComparison="StrongWildCard" maxBufferPoolSize="524288" maxBufferSize="524288" maxConnections="10" maxReceivedMessageSize="5242880">
      <readerQuotas maxDepth="32" maxStringContentLength="5242880" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" />
    </binding>
  </netTcpBinding>
</bindings>

然后定义端点时：

<endpoint address="" binding="netTcpBinding" bindingConfiguration="ExStreamWCFBinding" contract="ExStreamWCF.IService1">

已添加

根据您的附加信息，在您的服务端点上为bindingConfiguration属性指定值“NetTcpBinding_IService1”。

Answer 2

有时将“maxStringContentLength”值更改为最大值可能无法帮助。在服务器配置文件的“basicHttpBinding”部分中添加以下“default”绑定。

          <binding >
            <readerQuotas maxDepth="32" maxStringContentLength="102400" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /> 
          </binding>

读取XML数据时已超出最大字符串内容长度配额（8192）

2 个答案: