Question

我正在使用WCF Extensibilty，我创建了一个IClientMessageFormatter来通过Json-RPC序列化请求。代码就是这个：

    public Message SerializeRequest(MessageVersion messageVersion, object[] parameters)
    {
        string jsonText = SerializeJsonRequestParameters(parameters);

        // Compose message
        Message message = Message.CreateMessage(messageVersion, _clientOperation.Action, new JsonRpcBodyWriter(Encoding.UTF8.GetBytes(jsonText)));
        message.Properties.Add(WebBodyFormatMessageProperty.Name, new WebBodyFormatMessageProperty(WebContentFormat.Raw));
        _address.ApplyTo(message);

        HttpRequestMessageProperty reqProp = new HttpRequestMessageProperty();
        reqProp.Headers[HttpRequestHeader.ContentType] = "application/json";
        message.Properties.Add(HttpRequestMessageProperty.Name, reqProp);

        UriBuilder builder = new UriBuilder(message.Headers.To);
        builder.Query = string.Format("jsonrpc={0}", HttpUtility.UrlEncode(jsonText));
        message.Headers.To = builder.Uri;
        message.Properties.Via = builder.Uri;

        return message;
    }

我试图使用HttpRequestMessageProperty强制WCF使用GET http动词，但设置如下：

reqProp.Method = "GET";

导致WCF抛出System.Net.ProtocolViolationException。谁能告诉我我做错了什么？

Answer 1

自己找到答案！ GET动词要求消息不包含正文：

    public Message SerializeRequest(MessageVersion messageVersion, object[] parameters)
    {
        string jsonText = SerializeJsonRequestParameters(parameters);

        // Compose message
        Message message = Message.CreateMessage(messageVersion, _clientOperation.Action);
        _address.ApplyTo(message);

        HttpRequestMessageProperty reqProp = new HttpRequestMessageProperty();
        reqProp.Headers[HttpRequestHeader.ContentType] = "application/json";
        reqProp.Method = "GET";
        message.Properties.Add(HttpRequestMessageProperty.Name, reqProp);


        UriBuilder builder = new UriBuilder(message.Headers.To);
        builder.Query = string.Format("jsonrpc={0}", HttpUtility.UrlEncode(jsonText));
        message.Headers.To = builder.Uri;
        message.Properties.Via = builder.Uri;

        return message;
    }

在IClientMessageFormatter.SerializeRequest（HTTP GET）中编写消息

1 个答案: