By httpurlconnection get the server side will be empty inputstream Why do

If that code is as follows

public static String requestPost(String linkAddress, int timeout) {
    String result = null;
    try {
     URL url = new URL(linkAddress); 
     setProxy();
     HttpURLConnection conn = (HttpURLConnection) url.openConnection();
     conn.setConnectTimeout(timeout * 1000);
     conn.connect();
     int state = conn.getResponseCode();
     System.out.println(state);
     System.out.println(linkAddress);
     if (state == HttpURLConnection.HTTP_OK) {
      InputStream in = conn.getInputStream();
      System.out.println("$$$$$$"+in.available());
      BufferedReader reader = new BufferedReader(new InputStreamReader(in, HTTP.UTF_8));
      String line = null;
      while ((line = reader.readLine()) != null) {
       if(result==null){
        result=line;
       }else{
       result += line;
       }
      }
     }
    } catch (MalformedURLException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    } catch (IOException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
    return result;
  }
  

server returns the state is 200 which is a successful visit but why do not the server -side streaming ? flow does exist I use the phone can run , but with the simulator will not work, solving ? which setProxy () is a way to set the proxy access through a proxy


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with equipment testing it ,
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top about it. . . . . Do not know ?
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phone line simulator does not work , then use the handset testing chanting, anyway, finally, on the cell phone , not a simulator run .

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problem is that I do not have android phone. . . . . And this little bug module now points assigned my head how to do this ? Connect stream how successful it may be empty . . . .
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you can take a look at your normal network simulator
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all functions are normal int state = conn.getResponseCode ();
state = 200
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top back up to people seeking answers
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LZ, did you solve this problem , ah, my problem with you on the contrary, I simulation can obtain data on the phone not return code is 200
can tell me what is the reason you
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I also get inputstream flow ah
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setProxy (); inside it ?