计算机网络原理实验报告 基于TCPUDP的Socket编程

实验报告学院（系）名称：计算机科学与工程学院

Tcpsever：

package uppercase;

import java.io.*;

import .*;

class TCPServer{

public static void main(String argv[]) throws Exception

{

String clientSentence;

String capitalizedSentence;

ServerSocket welcomeSocket = new ServerSocket(1234);

while(true) {

Socket connectionSocket = welcomeSocket.accept();

BufferedReader infromClient = new BufferedReader(new InputStreamReader(connectionSocket. getInputStream()));

DataOutputStream outToClient = new DataOutputStream(connectionSocket.getOutputStream());

clientSentence = infromClient. readLine();

capitalizedSentence = clientSentence.toUpperCase() + '\n';

outToClient.writeBytes(capitalizedSentence);

}

}

}

用udp完成字符串大写

Udpsever：

package uppercase;

import java.io.*;

import .*;

class UDPServer {

clientSocket.send(sendPacket);

DatagramPacket receivePacket =

new DatagramPacket(receiveData, receiveData.length);

clientSocket.receive(receivePacket);

String modifiedSentence =

new String(receivePacket.getData());

System.out.println("FROM SERVER:" + modifiedSentence);

clientSocket.close();

}

}

用tcp传输文件

package uppercase;

import java.io.*;

import .Socket;

class TCPFileClient {

public static void main(String argv[]) throws Exception

{

String HOST = "0.0.0.0";

String filePath = "D:/bn/";

BufferedReader infromUser = new BufferedReader(new InputStreamReader(System.in));

String fileName = infromUser.readLine();

BufferedWriter bWriter = new BufferedWriter(new FileWriter(filePath + fileName));

Socket clientSocket = new Socket(HOST, 8810);

DataOutputStream outToServer = new DataOutputStream(clientSocket.getOutputStream());

Socket connectionSocket = welcomeSocket.accept();

BufferedReader infromClient = new BufferedReader(new InputStreamReader(connectionSocket. getInputStream()));

DataOutputStream outToClient = new DataOutputStream(connectionSocket.getOutputStream());

fileName = infromClient.readLine();

BufferedReader bReader = new BufferedReader(new FileReader(filePath + fileName));

String strLine = null;

outToClient.writeBytes("PREPARE\n");

while((strLine = bReader.readLine()) != null) {

System.out.println(strLine);

if (infromClient.readLine().contains("OK")){

outToClient.writeBytes(strLine + '\n');

}

}

outToClient.writeBytes("DONE\n");

break;

}

}

}

5.实验结论与分析：

通过此次实验使我熟悉和掌握socket编程的基本理论和方法。掌握基于TCP和UDP的工作原理以及Socket编程的一般方法，能够编写简单的网络应用程序。为以后的学习打下了良好的基础。