#server.py  import socket  def getipaddrs(hostname):#只是为了显示IP，仅仅测试一下      result = socket.getaddrinfo(hostname, None, 0, socket.SOCK_STREAM)      return [x[4][0] for x in result]    host = ''#为空代表为本地host  hostname = socket.gethostname()  hostip = getipaddrs(hostname)  print('host ip', hostip)#应该显示为：127.0.1.1  port = 9999     # Arbitrary non-privileged port  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  s.bind((host, port))  s.listen(4)  while True:      conn, addr = s.accept()      print('Connected by', addr)      data = conn.recv(1024)      if not data: break      conn.sendall(data)#把接收到数据原封不动的发送回去      print('Received', repr(data))      conn.close()

import java.io.BufferedReader;  import java.io.BufferedWriter;  import java.io.IOException;  import java.io.InputStreamReader;  import java.io.OutputStreamWriter;  import java.net.Socket;  import java.net.UnknownHostException;    import android.app.Activity;  import android.content.Intent;  import android.os.Bundle;  import android.util.Log;    public class TcpClient extends Activity {      /** Called when the activity is first created. */      @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.main);          runTcpClient();          finish();      }            private static final int TCP_SERVER_PORT = 9999;//should be same to the server port      private void runTcpClient() {          try {              Socket s = new Socket("**.**.intel.com", TCP_SERVER_PORT);//注意host改成你服务器的hostname或IP地址              BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream()));              BufferedWriter out = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));              //send output msg              String outMsg = "TCP connecting to " + TCP_SERVER_PORT + System.getProperty("line.separator");               out.write(outMsg);//发送数据              out.flush();              Log.i("TcpClient", "sent: " + outMsg);              //accept server response              String inMsg = in.readLine() + System.getProperty("line.separator");//得到服务器返回的数据              Log.i("TcpClient", "received: " + inMsg);              //close connection              s.close();          } catch (UnknownHostException e) {              e.printStackTrace();          } catch (IOException e) {              e.printStackTrace();          }       }      //replace runTcpClient() at onCreate with this method if you want to run tcp client as a service      private void runTcpClientAsService() {          Intent lIntent = new Intent(this.getApplicationContext(), TcpClientService.class);          this.startService(lIntent);      }  }