使用IclientMessageInspector的BeforesendRequest注入新的XML

Question

我想使用IClientMessageInspector的BeforeSendRequest方法"注入"自定义XML文本。这是我尝试的代码：

public object BeforeSendRequest(ref Message request, IClientChannel channel)
{       
    String myXML = "somexmlcontent";
    XmlDocument doc = new XmlDocument();
    doc.LoadXml(myXML);
    var ms = new MemoryStream();
    XmlDictionaryWriter writer = XmlDictionaryWriter.CreateTextWriter(ms);
    doc.WriteTo(writer);
    writer.Flush();
    ms.Position = 0;
    XmlDictionaryReader reader = XmlDictionaryReader.CreateTextReader(ms, XmlDictionaryReaderQuotas.Max);
    Message newReply = Message.CreateMessage(reader, int.MaxValue, request.Version);
    request = newReply;
    return null;
}

但它确实返回了我的错误"未识别的消息版本"。

Answer 1

在操纵之前制作消息的副本：

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

然后根据您的XML创建新消息：

request = Message.CreateMessage(reader, int.MaxValue, message.Version);

您还可以创建新的按摩设置原始请求对象的版本：

Message newReply = Message.CreateMessage(reader, int.MaxValue, request.Version);
request = newReply;

希望它有帮助