Question

我正在编写一个代码，它会使用WCF将所选文件上传到某个服务器。我正在使用.Net 4.0。我有一个带有fileupload控件的aspx页面。用户浏览文件并单击“保存”时，我将在会话对象中保留这些文件（以字节读入，然后转换为base64）。还有一个名为Upload的按钮。当我点击上传时，我正在调用WCF服务并从会话传递对象。以下是来自客户端的绑定配置

<i>   
<bindings>
<wsHttpBinding>
<binding name="WSHttpBinding_DefaultService" closeTimeout="00:20:00" openTimeout="00:20:00" receiveTimeout="00:20:00" sendTimeout="00:20:00" bypassProxyOnLocal="false" 
             transactionFlow="false" hostNameComparisonMode="StrongWildcard" 
             maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false">
      <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />

      <reliableSession ordered="true" inactivityTimeout="00:20:00" enabled="false" />
       <security mode="Message">
        <message clientCredentialType="Windows" negotiateServiceCredential="true" algorithmSuite="Default" establishSecurityContext="true" />
      </security>
    </binding>
  </wsHttpBinding>
</bindings>
</i>

并从服务器

开始

<i>
<wsHttpBinding>
<binding name="WSHttpBinding_DefaultService" closeTimeout="0:20:00"
  openTimeout="00:20:00" receiveTimeout="00:20:00" sendTimeout="00:20:00"
  bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
  maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"
  messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
  allowCookies="false">
  <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647"
    maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
  <reliableSession ordered="true" inactivityTimeout="00:20:00"
    enabled="false" />
  <security mode="Message">
    <message clientCredentialType="Windows" negotiateServiceCredential="true"
      algorithmSuite="Default" />
  </security>
</binding>
</wsHttpBinding>
</i>

我也对httpruntime

进行了调整

<i> <httpRuntime requestValidationMode="2.0"  executionTimeout="90" maxRequestLength="2097151"/></i>

问题是每当我尝试选择总大小超过2.5 MB的多个文件时，我的对象都没有被传输到WCF，这就是抛出错误

<i>The underlying connection was closed: A connection that was expected to be kept alive was closed by the server. >>>> The underlying connection was closed: A connection that was expected to be kept alive was closed by the server. >>>> Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. >>>> An existing connection was forcibly closed by the remote host >>>>     </i>

所以我需要做什么？我正在尝试使用wsHttpBinding找到解决方案那么有什么建议吗？

Answer 1

在httpRuntime配置中，属性maxRequestLength="2097151"表示最大请求大小约为2.1 MB。增加它应该会增加你的最大文件大小。

对于较大的文件，您可能需要创建某种streaming implementation，因此您不需要受maxRequestLength属性的限制。

对于WCF，发送超过2.1 MB的数据失败

1 个答案: