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下面是我尝试从 node.js 解析协议缓冲区的代码。它在 python 中工作，但在 node.js 中我似乎遇到了问题。我最担心的是 1) 我得到的有效载荷是否正确？2）我是否使用协议缓冲区来正确解析有效负载。

当我登录到控制台时，有效负载是 sys 所以我假设这是请求中的 prot 缓冲区。然后我通过调用解析缓冲区：

 bid_request.parse(payload);

这是代码片段和错误：

var buffertools = require('buffertools');
var Schema = require('protobuf').Schema; 
var schema = new Schema(fs.readFileSync('/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/test.desc'));

app.post('/n/test', function(req, res){

      var payload = [];
      req.on('data', function (data) {
        payload.push(data);
      });
      console.log(payload);
      req.on('end', function () {
        var payload = buffertools.concat.apply(null, payload);
        console.log(payload);
        console.log('--------------');
        var bid_request = schema['BidRequest'];

        var brr_fu = bid_request.parse(payload);

        // rest of code here

      });

});


libprotobuf ERROR google/protobuf/message_lite.cc:123] Can't parse message of type "BidRequest" because it is missing required fields: id

undefined:1
urn f.call(self,
      ^
Error: Malformed message
    at Function.parse (unknown source)
    at IncomingMessage.<anonymous> (/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/bidder.js:80:31)
    at IncomingMessage.emit (events.js:64:17)
    at HTTPParser.parserOnMessageComplete [as onMessageComplete] (http.js:130:23)
    at Socket.ondata (http.js:1506:22)
    at TCP.onread (net.js:374:27)

我也很好奇为什么有效载荷是<SlowBuffer>

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