How to customise Osmand HTTP response with a JSON

Hi Guys

I have an android App and I would like to return a JSON with the next time where the device will report the next position. Example in 120 seconds.

I did override the method sendResponse in the class OsmAndProtocolDecoder.

This is my code

@Override
public void sendResponse(Channel channel, HttpResponseStatus status) {
    if (channel != null) {
         String jsonString = "{\"code\":\"0001\",\"message\":\"Location successfully received\", \"data\":{\"seconds\":\"120\", \"miliseconds\":\"120000\"}}";
         byte[] bytesArray = jsonString.getBytes();
         ByteBuf buffer = Unpooled.copiedBuffer(bytesArray);            
         FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_0, status, buffer);
         response.headers().add(HttpHeaderNames.CONTENT_LENGTH, response.content().readableBytes());
         response.headers().set(HttpHeaderNames.CONTENT_TYPE, "application/json");
         channel.writeAndFlush(response);
    }    
}

The problem is that this code is broken something because the locations are not inserted in the table tc_locations. Only the table tc_device is updated in the column lastUpdate but not in positionId column

If I remove the code, the locations are inserted correctly to tc_locations