Android中的上载和下载速率分析 [英] Upload and Download rate profiling in Android

问题描述

我正在尝试开发一个Android应用程序，以测量网络的上载和下载速度，可能我需要每隔2秒钟左右运行和配置一次. SpeedTest.net应用程序是类似工作的理想应用程序，但是它不是开源的.而且，我需要每2秒运行一次.完成测试需要几秒钟.

I'm trying to develop an Android app to measure the upload and download speed of my network, which probably I would need to run and profile it every 2 seconds or so. SpeedTest.net app is an ideal app working similarly, however, it is not open-source. Moreover, I would need it to be run every 2 seconds. It takes couple of seconds to finish test.

我该怎么做?目前，我只是在Internet上某个地方下载一个小的随机.txt文件，并以size/time-to-download表示下载速率.但是我每次都会得到奇怪的结果.显然，这种方法行不通.

How can I do that? Currently I'm just downloading a small random .txt file found somewhere on Internet and measure size/time-to-download as a measure of download rate. But I get weird results every time. Apparently this approach is not working.

更新:下载完成.有关如何实现上传速度的任何建议?

UPDATE: download is done. Any advices on how to implement the upload speeds?

推荐答案

您需要下载一个相当大的文件，下载该文件至少需要15秒.文件越大，您收到的效果越好.使用具有高可用性的永远在线服务器.另外，仅在网络调用时使用累积(我相信您必须使用某些套接字来读取while循环.因此，在socket.read()之前和之后执行System.currentTimeMillis()并继续添加它们)

You need to download a considerably large file, something that takes atleast 15 seconds to download. The bigger the file, the better result you would receive. Use an always-on server with high availability. Also, use accumulation on the time of your network calls only (I believe that you must be using some socket to read in a while loop. So do System.currentTimeMillis() before and after socket.read() and keep adding them)

这几乎也是SpeedTest.net所做的

就上传而言，您可以做同样的事情.粗略的伪代码:

As far as upload is concerned, you can do the same thing. A rough pseudo code :

upload (String remote, InputStream localfile){
     Socket s = openDataConnection(remote);
     OutputStream os = new BufferedOutputStream (s.getOutputStream(), MAX_BUFFER_SIZE);

     byte[] buffer = new byte[MAX_BUFFER_SIZE];
     long totalTime = 0L;
     while((buffer = localfile.read())!= -1){
         long startTime = System.currentTimeMillis();
         os.write(buffer);
         long endTime = System.currentTimeMillis();
         totalTime += (endTime - startTime);
     }
}

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