将套接字连接到设备上的本地地址

Question

我现在暂时停留在这个问题上一段时间了.我通过接收端的套接字从设备向设备发送数据我必须将这些数据从套接字发送到设备本身.localhost/127.0.0.1/10.0.0.2或WiFi地址不起作用.

如何将数据从套接字发送到localhost:port设备？

try
{
    Socket socket = new Socket(InetAddress.getLocalHost(), 1500);
    InputStream is = s.getInputStream();
    OutputStream os = socket.getOutputStream();
    int bufferSize = 1024;
    byte[] buffer = new byte[bufferSize];
    int len = 0;
    while ((len = is.read(buffer)) > 0)
    {
        if(is.available() > 1024){
            os.write(buffer);
        Log.i(TAG, "localSocket writing: " + buffer.length);
        }


        try
        {
            Thread.sleep(100);
        }
        catch (InterruptedException e)
        {
            Log.e(TAG, "LocalSocketThread" + e.toString());
        }
    }
}

和我的明显权限:

<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.CAMERA" /> 
<uses-permission android:name="android.permission.STORAGE" /> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>

Answer 1

从您的代码来看，它是没有意义的，您从套接字读取并立即测试 available() 。您刚刚读取它，所以很可能它会返回 0。

while ((len = is.read(buffer)) > 0)
{
   // this is what makes no sense
   if (is.available() > 1024) os.write(buffer);
   // what you probably want to do is
   //  Even this test is not necessary because you already test in the while loop
   if (len > 0) 
   {
      os.write(buffer, 0, len);
      Log.i(TAG, "localSocket writing: " + len);
   }