Restful WCF 的可扩展性问题答案

【问题标题】：Scalabilty issues with Restful WCFRestful WCF 的可扩展性问题
【发布时间】：2012-06-26 15:37:57
【问题描述】：

您好，我已经构建了一个简单的 WCF 应用程序，用于从移动应用程序来回查询数据。其他一切工作正常但是当我尝试上传大型二进制视频上传时，它给了我奇怪的错误，我成功地能够上传高达 3-4 MB 但大于那个的二进制流我随机收到以下错误之一

<html>

   <BODY>
<FONT face="Helvetica">
<big><strong></strong></big><BR>
</FONT>
<blockquote>
<TABLE border=0 cellPadding=1 width="80%">
<TR><TD>
<FONT face="Helvetica">
<big>Network Error (tcp_error)</big>
<BR>
<BR>
</FONT>
</TD></TR>
<TR><TD>
<FONT face="Helvetica">
A communication error occurred: ""
</FONT>
</TD></TR>
<TR><TD>
<FONT face="Helvetica">
The Web Server may be down, too busy, or experiencing other problems preventing it from responding to requests. You may wish to try again at a later time.
</FONT>
</TD></TR>
<TR><TD>
<FONT face="Helvetica" SIZE=2>
<BR>
For assistance, contact your network support team.
</FONT>
</TD></TR>
</TABLE>
</blockquote>
</FONT>
</BODY>
</html>

<html>

<body>

<div id="header"><h1>Server Error</h1></div>

<div id="content">

 <div class="content-container"><fieldset>

  <h2>404 - File or directory not found.</h2>

  <h3>The resource you are looking for might have been removed, had its name changed, or is temporarily unavailable.</h3>

 </fieldset></div>

</div>

</body>

</html>

这是我的 Web.Config

<?xml version="1.0"?>
<configuration>
  <system.webServer>
    <security>
      <requestFiltering>
        <requestLimits maxAllowedContentLength="2147483648" />
      </requestFiltering>
    </security>
  </system.webServer>
  <system.web>
    <compilation debug="true" targetFramework="4.0" />
  </system.web>
  <system.serviceModel>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true"/>
   <bindings>
      <webHttpBinding>
        <binding transferMode="Streamed" maxBufferSize="5242880" maxReceivedMessageSize="2147483647" openTimeout="05:25:00" closeTimeout="00:25:00" sendTimeout="00:25:00" receiveTimeout="0:25:00"
                 name="webBinding"
        />
      </webHttpBinding>
    </bindings>
    <services>
       <service behaviorConfiguration="RestBehavior" name="EyePlots.Videos">
        <endpoint address="" behaviorConfiguration="web" binding="webHttpBinding" bindingConfiguration="webBinding"
           contract="EyePlots.IVideos" />
      </service>
</services>
    <behaviors>
      <endpointBehaviors>
        <behavior name="web">
          <webHttp />
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior name="RestBehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
          <serviceThrottling maxConcurrentCalls="100"
    maxConcurrentInstances="100" maxConcurrentSessions="100" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
</configuration>

这可能是系统的可扩展性问题吗？如果你们愿意，我可以发布我的代码 sn-ps 吗？谢谢！

【问题讨论】：

标签： wcf sql-server-2008 iis-7 wcf-data-services

【解决方案1】：

我认为 4 兆是 IIS 限制。

你设置了吗（IIS7+）

<system.webServer>
  <security>
    <requestFiltering>
      <requestLimits maxAllowedContentLength="2147483648" />
    </requestFiltering>
  </security>
</system.webServer>

这是一篇文章，列出了更多尝试打开的节流阀。 WCF problem with uploading large file, hosted in IIS

【讨论】：

如果这不是您的问题，请发布您的配置。
添加一个链接，列出更多限制，允许回答者上传大文件。
感谢添加<system.web> <httpRuntime executionTimeout="4800" maxRequestLength="500000000"/> </system.web> 解决了这个问题！