C# 正在引发QuotaExceedeException的WCF文件传输服务

我有一个WCF文件传输服务，当我的文件大于1.5 GB时，它会抛出

quotaExceedeException

。我看过类似的帖子，但我不明白为什么会出现异常或者如何解决

System.ServiceModel.QuotaExceedeException:已超过传入消息的最大消息大小配额（2147483647）。要增加配额，请在相应的绑定元素上使用MaxReceivedMessageSize属性

下面是我的客户端

app.config

：

<basicHttpBinding>
    <binding name="BasicHttpBinding_IFileTransfer" 
             maxReceivedMessageSize="2147483647" maxBufferSize="2147483647" 
             transferMode="Streamed" 
             receiveTimeout="00:30:00" sendTimeout="01:30:00" 
             openTimeout="00:30:00" closeTimeout="00:30:00">
        <readerQuotas maxDepth="32" maxStringContentLength="2147483647" 
                      maxArrayLength="2147483647" maxBytesPerRead="2147483647" 
                      maxNameTableCharCount="16384"/>
    </binding>
</basicHttpBinding>

<basicHttpBinding>
    <binding name="FileTransfer" maxReceivedMessageSize="2147483647" 
             maxBufferSize="2147483647" transferMode="Streamed" 
             receiveTimeout="00:30:00" sendTimeout="01:30:00" 
             openTimeout="00:30:00" closeTimeout="00:30:00">
        <readerQuotas maxDepth="32" maxStringContentLength="2147483647" 
                      maxArrayLength="2147483647" maxBytesPerRead="2147483647" 
                      maxNameTableCharCount="16384"/>
    </binding>
</basicHttpBinding>

下面是引发异常的服务代码片段：

var sum = 0;  

try  
{  
    FileStream targetStream;  
    var sourceStream = request.FileByteStream;  

    using (targetStream = new FileStream(tfile, FileMode.Create, FileAccess.Write, FileShare.None))  
    {  
        const int bufferLen = 1024 * 64;  
        var buffer = new byte[bufferLen];  
        int count;  

        while ((count = sourceStream.Read(buffer, 0, bufferLen)) > 0)  
        {  
            targetStream.Write(buffer, 0, count);  
            sum += count;  
        }  

        targetStream.Close();  
        sourceStream.Close();  
    }  
}  
catch (Exception ex)  
{  
    Logger.Debug("sum = " + sum);  // sum = 1610609664 bytes (this is 1.499997 GB)  
    Logger.LogException(ex);  
}  

---

我没有比1.5 GB更大的容量了

谢谢steve16351，我没有意识到maxReceivedMessageSize太长了。我用Int64.MaxValue（9223372036854775807）更新了我的配置文件，并且能够上传一个6.8GB的文件

<basicHttpBinding>
    <binding name="FileTransfer" maxReceivedMessageSize="9223372036854775807" maxBufferSize="2147483647" transferMode="Streamed" receiveTimeout="00:30:00" sendTimeout="01:30:00" openTimeout="00:30:00" closeTimeout="00:30:00">
      <readerQuotas maxDepth="32" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="16384"/>
    </binding>
</basicHttpBinding>

---

maxReceivedMessageSize

是传输的总数据，包括所有标题和实际传输的数据大小。例如，如果作为soap消息传输，并且数据是Base64编码的，那么传输的实际数据将有很多开销，因此您可能会使用1.5GB文件达到2GB的限制。您需要增加限制（它将采用Int64.MaxValue，但可能仅在绑定代码中使用，请参阅）

var sum = 0L;  
try  
{  
    FileStream targetStream;  
    var sourceStream = request.FileByteStream;  
    using (targetStream = new FileStream(tfile, FileMode.Create, FileAccess.Write, FileShare.None))  
    {  
        const int bufferLen = 1024 * 64;  
        var buffer = new byte[bufferLen];  
        int count;  
        while ((count = sourceStream.Read(buffer, 0, bufferLen)) > 0)  
        {  
            targetStream.Write(buffer, 0, count);  
            sum += count;  
        }  
        targetStream.Close();  
        sourceStream.Close();  
    }  
}  
catch (Exception ex)  
{  
    Logger.Debug("sum = " + sum);  // no more exception  
    Logger.LogException(ex);  
}