Mobile Computing Tugas Individu 1

Teknik Komputasi: Ujian Akhir Semester (UAS)

 

 

    Mobile Computing   

Tugas Individu 1 

   

Dosen   :  Ir. Teddy Mantoro, M.Sc.  Ph.D      Nama    :  Yoga Prihastomo  NIM      :  1011601026  Kelas    :  XB 

       

MAGISTER ILMU KOMPUTER  UNIVERSITAS  BUDI  LUHUR  2012    

          

 

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Mobile Computing: Tugas Individu 1 

                   

Lingkungan Pengujian:  ƒ Processor: Intel Core2Duo T6600  ƒ Memory: 3GB  ƒ Sistem Operasi: Windows XP SP3  ƒ Versi JDK: 1.6.0 Update 27  ƒ Editor: Notepad++   

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Mobile Computing: Tugas Individu 1 

A. TCP Protocol  1) TCPServer  ƒ Listening di Port 6789;  ƒ Merespon inputan dari Client dengan menjadikannya huruf kapital.  Adapun programnya adalah sebagai berikut:  /* TCPServer Listening on Port 6789 */ import java.io.*; import java.net.*; class TCPServer { public static void main(String argv[]) throws Exception { String clientSentence; ServerSocket welcomeSocket = new ServerSocket(6789); while(true) { Socket connectionSocket = welcomeSocket.accept(); BufferedReader inFromClient = new BufferedReader(new InputStreamReader(connectionSocket.getInputStream())); DataOutputStream outToClient = new DataOutputStream(connectionSocket.getOutputStream()); clientSentence = inFromClient.readLine(); outToClient.writeBytes(clientSentence.toUpperCase()+'\n'); } } }

Kompilasi:  javac TCPServer.java

  Eksekusi:  java TCPServer

  Cek Port:  netstat –a –n –o –p tcp

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Mobile Computing: Tugas Individu 1 

2) TCP Client  ƒ Menggunakan Port 6789 untuk berkomunikasi dengan TCP Server;  ƒ Menerima respon inputan dari Server berupa huruf kapital;  ƒ Melakukan looping (while) hingga mengetik kata EXIT.  Adapun programnya adalah sebagai berikut:  /* TCPClient Loop Until Input Equal Exit */ import java.io.*; import java.net.*; class TCPClient { public static void main(String argv[]) throws Exception { String modifiedSentence="EXIT"; String sentence; while ( modifiedSentence.equals("EXIT") ) { BufferedReader inFromUser = new BufferedReader (new InputStreamReader(System.in)); Socket clientSocket = new Socket("localhost", 6789); DataOutputStream outToServer = new DataOutputStream(clientSocket.getOutputStream()); BufferedReader inFromServer = new BufferedReader (new InputStreamReader(clientSocket.getInputStream())); sentence = inFromUser.readLine(); outToServer.writeBytes(sentence + '\n'); modifiedSentence = inFromServer.readLine(); System.out.println("FROM SERVER: " + modifiedSentence); if ( !modifiedSentence.equals("EXIT") ) { modifiedSentence="EXIT"; } else { modifiedSentence="GOEXIT"; } clientSocket.close(); } } }

Kompilasi:  javac TCPClient.java

  Eksekusi:  java TCPClient

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Mobile Computing: Tugas Individu 1 

  Cek Port:  netstat –a –n –o –p tcp

     

B. UDP Protocol  1) UDP Server  ƒ Listening di Port 9876;  ƒ Merespon inputan dari Client dengan menjadikannya huruf kapital.  Adapun programnya adalah sebagai berikut:  /* UDPServer Listening on Port 9876*/ import java.io.*; import java.net.*; class UDPServer { public static void main(String args[]) throws Exception { DatagramSocket serverSocket = new DatagramSocket(9876); byte[] receiveData = new byte[512]; byte[] sendData = new byte[512]; while(true) { DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length); serverSocket.receive(receivePacket); String sentence = new String(receivePacket.getData()); sentence = sentence.toUpperCase(); InetAddress IPAddress = receivePacket.getAddress(); int port = receivePacket.getPort(); sendData = sentence.getBytes(); DatagramPacket sendPacket = new DatagramPacket (sendData, sendData.length, IPAddress, port);

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Mobile Computing: Tugas Individu 1 

serverSocket.send(sendPacket); } } }

Kompilasi:  javac UDPServer.java

  Eksekusi:  java UDPServer

  Cek Port:  netstat –a –n –o –p udp

    2) UDP Client  ƒ Menggunakan Port 9876 untuk berkomunikasi dengan UDP Server;  ƒ Menerima respon inputan dari Server berupa huruf kapital;  ƒ Melakukan looping (do‐while) hingga mengetik kata EXIT.  Adapun programnya adalah sebagai berikut:  /* UDPClient Loop Until Input Equal Exit */ import java.io.*; import java.net.*; class UDPClient { public static void main(String args[]) throws Exception { String sentence; do { BufferedReader inFromUser = new BufferedReader (new InputStreamReader(System.in)); DatagramSocket clientSocket = new DatagramSocket(); InetAddress IPAddress = InetAddress.getByName("localhost"); byte[] sendData = new byte[512];

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Mobile Computing: Tugas Individu 1 

byte[] receiveData = new byte[512]; 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.trim()); clientSocket.close(); sentence = sentence.toUpperCase(); } while( !sentence.equals("EXIT")); } }

Kompilasi:  javac UDPClient.java

  Eksekusi:  java UDPClient

  Cek Port:  netstat –a –n –o –p udp

       

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