Socket Programming using Java

Socket Programming using Java

• 1.
  OpenLab 1 Socket Programming openlabworld@gmail.com
• 2.
  OpenLab 2 Socket Programming
• 3.
  OpenLab 3 TCP/IP Beginning
• 4.
  OpenLab 4 TCP/IP ModelEncapsulationDecapsulation
• 5.
  OpenLab 5 Socket Description
• 6.
  OpenLab 6 Sockets ● Defination- An interface between an application process and transport layer – The application process can send/receive messages to/from another application process (local or remote)via a socket ● Types of Sockets – TCP/Stream Socket – UDP/Datagram Socket – Raw Socket ● No Sockets – No communication
• 7.
  OpenLab 7 Socket Programming usingJAVA ● I/O Stream ● Reader/Writer ● Create Socket (Class) – TCP Socket ● Server ServerSocket ● Client Socket – UDP Socket ● DatagramSocket
• 8.
  OpenLab 8 I/O Stream *https://docs.oracle.com/javase/tutorial/essential/io/streams.html OutputStream InputStream Write Read -Input Source - Output Destination A stream can represent many different kinds of sources & destinations - - Files - Devices - Programs - Memory arrays
• 9.
  OpenLab 9 Classification ofStreams ● Byte Stream – Data in the form of individual bytes ● Text Strem – Data as character of each 2 bytes
• 10.
  OpenLab 10 Byte Strem ●Byte Stream – Data in the form of individual bytes ● InputStrem – DataInputStream – FileInputStream – BufferedInputStream – . . . ● OutputStream – DataOutputStream – FileOutputStream – BufferedOutputStream – . . .
• 11.
  OpenLab 11 Text Stream ●Text Stream – Data as character of each 2 bytes ● Reader – FileReader – BufferedReader ● Writer – FileWriter – BufferedWriter
• 12.
  OpenLab 12 Steps tocreate Socket(Server/Client) ● TCP Server Socket – Step-1 Create ServerSocket Object – Step-2 Wait for the client request – Step-3 Create I/O streams for communication to the client. – Step-4 Perform communication with client – Step-5 Close Socket ● TCP Client Socket – Step-1 Create Socket Object – Step-2 Create I/O streams for communication with the server – Step-3 Perform I/O or communication with the server – Step-4 Close Socket
• 13.
  OpenLab 13 Create TCPSocket (Connection Oriented) socket() connect() bind() accept() send() recv() listen() socket() send() recv() Server Client close() close()
• 14.
  OpenLab 14 Working ofTCP Socket
• 15.
  OpenLab 15 Scenario 2 ●Two BEST friends , they want to chat to each using their computer and their fathers uninstalled messanger from their computers Ganesh Mohan
• 16.
  OpenLab 16 Case-1 ● Theydecided to create a STREAM/TCP Socket ● One way Communication I/O Stream Client Socket MOHAN Server Socket GANESH `
• 17.
  OpenLab 17 Case-2 ● Theydecided to create a STREAM/TCP Socket ● Two way Communication I/O Stream Client Socket MOHAN Server Socket GANESH `
• 18.
  OpenLab 18 Steps toCreate UDP Socket ● UDP Server/Client – Step-1 Create DatagramSocket object – Step-2 Create buffer for tmp storage – Step-3 Store/Reterive data in/from buffer – Step-4 Create DatagramPacket – Step-5 send/receive DatagramPacket
• 19.
  OpenLab 19 Create UDPSocket [Connection less] socket() bind() recvfrom( ) sendto() socket() recvfrom( ) sendto() ClientServer close() close()
• 20.
  OpenLab 20 Case-1 ● Theydecided to create a DATAGRAM/UDP Socket ● One way Communication Client Socket MOHAN Server Socket GANESH Datagram Packet
• 21.
  OpenLab 21 Case-2 ● Theydecided to create a DATAGRAM/UDP Socket ● Two way Communication Client Socket MOHAN Server Socket GANESH Datagram Packet Datagram Packet
• 22.
  OpenLab 22 To becontinued...