Hessian lite 3.2.5 cannot readInputStream from Hessian2Input

[haiyang1985]

• [x] I have searched the issues of this repository and believe that this is not a duplicate.
• [x] I have checked the FAQ of this repository and believe that this is not a duplicate.

Environment

• Dubbo version: 2.7.0
• Operating System version: macOS Sierra 10.12
• Java version: 1.8

Steps to reproduce this issue

We are going to support Google PB serialization with Hessian2 as delegate to write buffer to channel. But, the readInputStream cannot parse the tag from the BytesOutputStream.

1. write stream direct to Hessian2Output BytesOutputStream.

   
   protected AbstractProtobufObjectOutput(OutputStream os) {
   this.delegate = new Hessian2ObjectOutput(os);
   }

private void writeStream(Object obj) throws IOException { Hessian2ObjectOutput hessian2ObjectOutput = (Hessian2ObjectOutput) delegate; OutputStream outputStream = hessian2ObjectOutput.getOutput().getBytesOutputStream(); protobufUtil.serializeWithProtobuf(obj, outputStream); }

2. read the stream from the Hessian2Input readInputStream.

protected AbstractProtobufObjectInput(InputStream is) {
  this.delegate = new Hessian2ObjectInput(is);
}

<T> T deserializeWithStream(Class<T> clazz)
        throws IOException, NoSuchMethodException, IllegalAccessException, InvocationTargetException {
  Hessian2ObjectInput input = (Hessian2ObjectInput) delegate;
  InputStream inputStream = input.getOutput().readInputStream();
  return deserializeWithProtobuf(inputStream, clazz);
}

Pls. provide [GitHub address] to reproduce this issue.

### Expected Result
Google Protobuf should be able to read inputStream from Hessian2Input readInputStream.

### Actual Result
The tag value should be 'B' or 'b', actually it's not.

@Override public InputStream readInputStream() throws IOException { int tag = read();

switch (tag) {
   case 'B':
   case 'b':
        _isLastChunk = tag == 'B';
        _chunkLength = (read() << 8) + read();
        break;

    default:
        throw expect("binary", tag);

}

return new ReadInputStream();

}

From the Hessian2Output's BytesOutputStream, we are able to see write 'A' for continue, but 'B' for close.

@Override public void write(byte[] buffer, int offset, int length) throws IOException { while (length > 0) { int sublen = SIZE - _offset;

    if (length < sublen)
        sublen = length;

    if (sublen > 0) {
        System.arraycopy(buffer, offset, _buffer, _offset, sublen);
        _offset += sublen;
    }

    length -= sublen;
    offset += sublen;

    if (SIZE <= _offset) {
        int chunkLength = (_offset - _startOffset) - 3;

        _buffer[_startOffset] = (byte) BC_BINARY_CHUNK;
        _buffer[_startOffset + 1] = (byte) (chunkLength >> 8);
        _buffer[_startOffset + 2] = (byte) (chunkLength);

        Hessian2Output.this.flush();

        _startOffset = _offset;
        _offset += 3;
    }
}

}

@Override public void close() throws IOException { int startOffset = _startOffset; _startOffset = -1;

if (startOffset < 0)
    return;

int length = (_offset - startOffset) - 3;

_buffer[startOffset] = (byte) 'B';
_buffer[startOffset + 1] = (byte) (length >> 8);
_buffer[startOffset + 2] = (byte) (length);

Hessian2Output.this.flush();

}

If there is an exception, please attach the exception trace:

Just put your stack trace here!

[chickenlj]

How do protobufUtil.serializeWithProtobuf(obj, outputStream); and protobufUtil.deserializeWithProtobuf(inputStream, clazz); work?

[chickenlj]

If we write and read bytes in or out Hessian's OutputStream and InputStream directly, is there any rule we should follow? for example, write some flags to indicate Hessian how to work properly?

[chickenlj]

Try to call outstream.close () everytime.

[CrazyHZM]

No feedback for a long time, please close the issue temporarily. If there is still a problem, you can reopen it.