wcf 流传输，多个客户端 急急急！！！

Question

wcf流传输，一个服务端多个客户端，我传输的时候为啥报错，传着传着就出问题了，说是读取流发生异常。An exception has been thrown when reading the stream.

Answer 1

注意一下文件流的打开方式，不要使用独占锁，否则，其他线程无法读取该流，如果同时还有其他进程在读它。

另外，请检查 Exception 的 InnerException，它会提供更加详细的异常文本。

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Mark Zhou

Answer 2

不是独占，也不知道为啥报错，弄不明白了

Answer 3

您好,

我将你的帖子移到WCF的论坛。在那里你可以得到更专业的WCF回复。谢谢

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Vin Jin [MSFT]
MSDN Community Support | Feedback to us
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Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Answer 4

Hi mister55,

你可以在服务端的config文件中将includeExceptionDetailInFaults设置为true,查看Exception的innerException,知道具体的异常信息。也有可能是你的服务端config文件设置不恰当引起这个问题，你可以把你的服务端config文件代码列出来。在客户端config文件中你可以适当增大SendTimeout的值，在服务端config中将ReceiveTimeout值增大.

谢谢

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Answer 5

能具体点吗。

在什么情况下出错。

比如，多少个客户端，什么绑定，文件大小，网络情况。

还有观察一下你的服务器内存，CPU情况

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Frank Xu Lei--谦卑若愚，好学若饥
专注于.NET平台下分布式应用系统开发和企业应用系统集成
Focus on Distributed Applications Development and EAI based on .NET
 

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Answer 6

就是两个客户端，一个服务端，网速快的话没问题，要是慢了，就可能出错了

<?xml version="1.0"?>
<configuration>
  <system.serviceModel>
    <bindings>
      <!--设置netTcpBinding的接受信息最大数，2147483647传输方式-->
      <netTcpBinding>
        <binding name="TransferFileBinding" maxReceivedMessageSize="1073741824" transferMode="Streamed">
          <security mode="None"/>
        </binding>
       
      </netTcpBinding>
     
    </bindings>
    <services>
      <service name="WCFFileServer.Transfer" behaviorConfiguration="WCFService.WCFServiceBehavior">
        <!--定义终节点ABC-->
        <endpoint address="" binding="netTcpBinding" bindingConfiguration="TransferFileBinding" contract="FileInterface.ITransfer"/>
        <host>
          <baseAddresses>
            <add baseAddress="net.tcp://10.163.157.213:8080/service"/>
          </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="WCFService.WCFServiceBehavior">
          <serviceMetadata httpGetEnabled="false"/>
          <serviceDebug includeExceptionDetailInFaults="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>

Answer 7

后来改成这样了，也报错误，网速是200多k

<?xml version="1.0"?>
<configuration>
  <system.serviceModel>
    <bindings>
      <!--设置netTcpBinding的接受信息最大数，2147483647传输方式-->
      <netTcpBinding>
        <binding name="TransferFileBinding" maxReceivedMessageSize="124294967296" transferMode="Streamed" closeTimeout="00:05:00" openTimeout="00:05:00" receiveTimeout="01:00:00" sendTimeout="01:00:00"
               
          maxBufferSize="2147483646" maxBufferPoolSize="124294967296" >
          <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647"
          maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647"/>
          <security mode="None"/>

        </binding>
       

      </netTcpBinding>
        </bindings>
    <services>
      <service name="WCFFileServer.Transfer" behaviorConfiguration="WCFService.WCFServiceBehavior">
        <!--定义终节点ABC-->
        <endpoint address="" binding="netTcpBinding" bindingConfiguration="TransferFileBinding" contract="FileInterface.ITransfer"/>
              <host>
          <baseAddresses>
            <add baseAddress="net.tcp://192.168.1.12:8070/service"/>
           </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="WCFService.WCFServiceBehavior">
          <serviceMetadata httpGetEnabled="false"/>
          <serviceDebug includeExceptionDetailInFaults="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>

 

Answer 8

Hi mister55,

你可以开启一下WCF Tracing查看服务与客户端所有交互信息,查看一下错误信息。

#WCF Tracing

http://msdn.microsoft.com/zh-cn/library/ms733025.aspx

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