当所有超时参数设置为最大值时，WCF服务超时

Question

我有一个WCF服务，它有一个非常耗时的方法，将大数据文件上传到"azure 表存储"。

我在客户端运行时设置超时如下:-

binding = new BasicHttpBinding();
binding.CloseTimeout = TimeSpan.FromMilliseconds(2147483647.0);
binding.OpenTimeout = TimeSpan.FromMilliseconds(2147483647.0);
binding.ReceiveTimeout = TimeSpan.FromMilliseconds(2147483647.0);
binding.SendTimeout = TimeSpan.FromMilliseconds(2147483647.0);

和我的网。配置的超时设置如下:—

<bindings>
      <basicHttpBinding>
        <binding maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" sendTimeout="22:30:00" receiveTimeout="22:30:00" openTimeout="22:30:00" closeTimeout="22:30:00" maxBufferSize="2147483647">
          <readerQuotas maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxDepth="2147483647" maxNameTableCharCount="2147483647" maxStringContentLength="2147483647" />
        </binding>
      </basicHttpBinding>
    </bindings>

我在VS 2012中运行我的代码，我看到的问题是文件上传方法在60分钟后崩溃，出现未处理的CommunicationException:远程服务器返回错误:NotFound。如果按F5，则继续上传并完成。此时，在Reference.cs文件中出现崩溃:-

public void EndFileUploadMethod(System.IAsyncResult result) {
                object[] _args = new object[0];
                base.EndInvoke("FileUploadMethod", _args, result);

Answer 1

我使用类似的azure blob来存储我的内容。我的代码没有任何超时设置。试试这个，让我知道。

    public static CloudBlobContainer Container
    {
        get
        {
            CloudStorageAccount.SetConfigurationSettingPublisher((configName, configSetter) =>
                {
                    // Provide the configSetter with the initial value
                    configSetter(RoleEnvironment.GetConfigurationSettingValue(configName));
                    RoleEnvironment.Changed += (sender, arg) =>
                    {
                        if (arg.Changes.OfType<RoleEnvironmentConfigurationSettingChange>().Any((change) =>
                        (change.ConfigurationSettingName == configName)))
                        {
                            // The corresponding configuration setting has changed, so propagate the value
                            if (!configSetter(RoleEnvironment.GetConfigurationSettingValue(configName)))
                            {
                                // In this case, the change to the storage account credentials in the
                                // service configuration is significant enough that the role needs to be
                                // recycled in order to use the latest settings (for example, the 
                                // endpoint may have changed)
                                RoleEnvironment.RequestRecycle();
                            }
                        }
                    };
                });
            CloudStorageAccount acc = CloudStorageAccount.FromConfigurationSetting("RecordingsStorageAccount");
            CloudBlobClient bc = acc.CreateCloudBlobClient();
            CloudBlobContainer c = bc.GetContainerReference(RoleEnvironment.GetConfigurationSettingValue("RecordingsContainer"));
            return c;
        }
    }

Answer 2

对于文件上传，还需要准备一些其他配置。首先，你要上传的文件有多大?如果它们> 50MB左右，您可能需要将它们分成更小的块并发送这些块。

在此之前，尝试将以下设置添加到配置中。不要担心<authentication>和<compilation>标签。我们感兴趣的是<httpRuntime>和<requestLimits>标签。

我的maxAllowedContentLength属性值是任意的，所以你可以把它设置成任何你想要的。我相信它是用字节来衡量的。

  <system.web>
    <compilation debug="true" targetFramework="4.0"/>
    <authentication mode="Windows" />
    <httpRuntime maxRequestLength="2147483647" />
  </system.web>
  <system.webServer>
    <security>
      <requestFiltering>
        <requestLimits maxAllowedContentLength="2000000000" />
      </requestFiltering>
    </security>
  </system.webServer>