计算机网络试验2

天津理工大学实验报告

BufferedReader infromClient =

new BufferedReader(new InputStreamReader(

connectionSocket. getInputStream()));

DataOutputStream outToClient =

new DataOutputStream(

connectionSocket.getOutputStream());

ClientSentence = infromClient. readLine();

capitalizedSentence =

ClientSentence.toUpperCase() + '\n';

outToClient.writeBytes(capitalizedSentence);

}

}

}

编程中注意客户程序和服务器程序端口号要相同。客户程序中的

S ocket clientSocket = new Socket("59.67.146.124",6789);使用计算机名和客户机ip均可。运行效果：

byte[] sendData = new byte[1024];

byte[] receiveData = new byte[1024];

String sentence = inFromUser.readLine();

sendData = sentence.getBytes();

DatagramPacket sendPacket =

new DatagramPacket(sendData, sendData.length, IPAddress, 9876); 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();

}

}

客户端程序和服务器程序要注意端口号一致，客户机用计算机名获得IP地址。

运行效果：