创建WCF消息的缓冲副本 [英] Create a buffered copy of WCF Message

问题描述

我有一个消息检查下面的代码检查响应主体。我明白，所以我先创建一个副本WCF消息只能被读取一次。但是，下面的代码我仍然得到错误，因为它已被阅读此消息不支持操作。......我失去的东西吗？

I have the following code in a message inspector to examine the response body. I understand the WCF Message can only be read once so I create a copy first. But with the following code I still get the error "This message cannot support the operation because it has been read."...Am I missing something?

        MessageBuffer buffer = message.CreateBufferedCopy(Int32.MaxValue);
        Message copy = buffer.CreateMessage();
        message = copy;

        XmlDictionaryReader bodyReader = copy.GetReaderAtBodyContents();
        bodyReader.ReadStartElement("Binary");
        byte[] bodyBytes = bodyReader.ReadContentAsBase64();
        string messageBody = Encoding.UTF8.GetString(bodyBytes);

        return messageBody;

此外，我不使用Int23.MaxValue那里感觉很舒服。这将是一个合理的规模。

Also I don't feel comfortable using Int23.MaxValue there. What would be a reasonable size?

推荐答案

试试这个代码：

    MessageBuffer buffer = message.CreateBufferedCopy(Int32.MaxValue);
    message = buffer.CreateMessage();

    var copy = buffer.CreateMessage();
    XmlDictionaryReader bodyReader = copy.GetReaderAtBodyContents();
    bodyReader.ReadStartElement("Binary");
    byte[] bodyBytes = bodyReader.ReadContentAsBase64();
    string messageBody = Encoding.UTF8.GetString(bodyBytes);

    return messageBody;

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