Question

我有一个控制台应用程序将文件发送到我的WCF服务，但我的服务正在响应502 http代码（代理错误 - 指定的网络名称不再可用。）当我尝试发送大于4MB的文件时。这段代码对我来说没有意义，因为他接受的文件小于4MB。

WCF服务在Windows 2003 Server，IIS 6和配置文件下运行，如下所示。

<system.serviceModel>
    <behaviors>
        <serviceBehaviors>
            <behavior name="FileUploadServiceBehavior">
                <serviceMetadata httpGetEnabled="True" httpsGetEnabled="False" />
                <serviceDebug includeExceptionDetailInFaults="False" />
            </behavior>
        </serviceBehaviors>
    </behaviors>
    <bindings>
        <basicHttpBinding>
            <!-- buffer: 64KB; max size: 64MB -->
            <binding name="FileUploadServiceBinding"
                    transferMode="Streamed"
                    messageEncoding="Mtom"
                    maxReceivedMessageSize="67108864" maxBufferSize="65536"
                    closeTimeout="00:05:00" openTimeout="00:05:00"
                    receiveTimeout="00:10:00" sendTimeout="00:05:00">
                <security mode="None">
                    <transport clientCredentialType="None" />
                </security>
            </binding>
        </basicHttpBinding>
    </bindings>
    <services>
        <service behaviorConfiguration="FileUploadServiceBehavior" name="MyProject.ServiceFileTransfer.FileUploadService">
            <endpoint address="" binding="basicHttpBinding" contract="MyProject.ServiceFileTransfer.IFileUploadService"
               bindingConfiguration="FileUploadServiceBinding">
            </endpoint>
        </service>
    </services>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>

为什么在发送大于4mb的文件时会返回502 Bad Gateway错误？

Answer 1

默认限制为4mb。您需要将文件拆分为较小的部分。

http://social.msdn.microsoft.com/Forums/en-US/wcf/thread/f6541134-2e08-4eb9-987b-2158fb99b403/

或更改MaxMessageLength

Large Binary (byte[]) File transfer through WCF

WCF服务返回502 Http代码（指定的网络名称不再可用。）

1 个答案: