Can'；t在javascript中从protobuf消息读取字节

我需要使用javascript对protobuf消息中的

字节进行编码/解码。

字符串工作正常，如图所示，但在消息定义中使用
字节时，我可以看到数据包含在解码的bytebuffer中（printDebug显示了这一点），但我无法提取字符串：

test.proto：

syntax = "proto3";

package Testing;

message Record {
  string  data = 1;
}

message Bytes {
  bytes data = 1;
}

TestProto.js：

var ProtoBuf = require("protobufjs");
var ByteBuffer = require("bytebuffer");

var builder = ProtoBuf.loadProtoFile('test.proto');
var Testing = builder.build('Testing');

var test = new Testing.Record();
test.data = 'Hello World';

var encoded = test.encode();
encoded.printDebug();

var unencoded = Testing.Record.decode(encoded);
console.log(unencoded.data);
// prints 'Hello World'

console.log('\n\n');

var bytes = new Testing.Bytes();
var bb = new ByteBuffer();
bb.writeIString('Testing 1,2,3');
bb.flip();
bytes.data = bb;

var bytesEncoded = bytes.encode();
bytesEncoded.printDebug();

var bytesUnencoded = Testing.Bytes.decode(bytesEncoded);
bytesUnencoded.data.printDebug();
console.log(bytesUnencoded.data.readIString());

控制台输出：

$ node TestProto.js
ByteBufferNB(offset=0,markedOffset=-1,limit=13,capacity=16)
-------------------------------------------------------------------
<0A 0B 48 65 6C 6C 6F 20 57 6F 72 6C 64>00 00 00   ..Hello.World...

Hello World



ByteBufferNB(offset=0,markedOffset=-1,limit=19,capacity=32)
-------------------------------------------------------------------
<0A 11 00 00 00 0D 54 65 73 74 69 6E 67 20 31 2C   ......Testing.1,
 32 2C 33>00 00 02 00 00 01 00 00 00 01 00 00 00   2,3.............

ByteBufferNB(offset=2,markedOffset=-1,limit=19,capacity=32)
-------------------------------------------------------------------
 0A 11<00 00 00 0D 54 65 73 74 69 6E 67 20 31 2C   ......Testing.1,
 32 2C 33>00 00 02 00 00 01 00 00 00 01 00 00 00   2,3.............

C:\node_modules\protobufjs\node_modules\bytebuffer\dist\ByteBufferNB.js:1874
            throw RangeError("Index out of bounds: "+offset+" + "+temp+" <= "+this.buffer.length);
            ^

RangeError: Index out of bounds: 6 + 218103808 <= 32
    at RangeError (native)
    at module.exports.ByteBufferPrototype.readIString (C:\node_modules\protobufjs\node_modules\bytebuffer\dist\ByteBufferNB.js:1874:19)
    at Object.<anonymous> (C:\TestProto.js:30:33)
    at Module._compile (module.js:435:26)
    at Object.Module._extensions..js (module.js:442:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:311:12)
    at Function.Module.runMain (module.js:467:10)
    at startup (node.js:136:18)
    at node.js:963:3

$node TestProto.js
ByteBufferNB（偏移量=0，标记偏移量=1，极限值=13，容量=16）
-------------------------------------------------------------------
你好，世界。。。
你好，世界
ByteBufferNB（偏移量=0，标记偏移量=1，极限值=19，容量=32）
-------------------------------------------------------------------
00 00 02 00 00 01 00 00 00 01 00 00 00   2,3.............
ByteBufferNB（偏移量=2，标记偏移量=1，极限值=19，容量=32）
-------------------------------------------------------------------
0A 1100 00 02 00 00 01 00 00 2,3。。。。。。。。。。。。。
C:\node\u modules\protobufjs\node\u modules\bytebuffer\dist\ByteBufferNB.js:1874
将RangeError（“索引超出范围：“+offset+”+“+temp+”通过ByteUnencoded.data显式设置为Big-Endian，然后再读取”
修复了该问题

bytesUnencoded.data.BE();
console.log(bytesUnencoded.data.readIString());