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TCP/IP CLIENT SOCKET
TCP/IP SERVER SOCKET
URL-DATAGRAM SOCKET
Submitted on
p.Priyadharshini
I-MSC (IT)
Department of cs and IT
Nadar saraswathi college of arts and science,theni
Networking programming
Introduction
Networking programming introduction
Java support network programming to communicate
with other
Let’s start with network programming introduction
• As well as Computer network means group of computer
between connect each other medium and transfer data
Between them when required
• Java support network programming we can make such
program In which machine connect in network send and
receive Data from other machine network by programming
• The first and simple logic send or receive any kind of data or
message is we must have address of receiver or
sender.computer needs to communicate with another
computer, its require other computer s address
• java networking programming support concept of socket.a
socket identifies an endpoint in a network.the socket
communication takes places via a protocol
Internet protocol
ď‚´ An Internet protocol Lower level connection less ( means no continuing. Connect
between the end point) protocol for delivering data into small packet from one
computer (address) to another computer (address) across the network (internet)
doesn’t guarantee deliver sent packet the destination
SOCKET PROGRAMMING IN JAVA
ď‚´ Socket programming java very important topic and concept of networking
programming
ď‚´ Java network programming support concept Of socket.a Socket Identifies
endpoint Network.socket Communication Take place protocol
ď‚´ Socket can be Used connect java input/output system other program May resides
any machine on internet local machine.
ď‚´ TCP/ip socket:
ď‚´ Tcp/IP used to implement Point to point, reliable Bidirectional stream-based
connection between.hosts on the internet
ď‚´ There are two types of TCP socket available in java
ď‚´ Tcp/ip client socket
ď‚´ TCP/ip server socket
Tcp/ip client socket
The socketet class (available in java.net package) client socket designed to connect To server socket
And intiate protocol Exchanged
There are two constructes used to create client socket type object.
(A)Socket (string host_name,int port) throw
Unknown Hostexception,IOException :: it creates a socket that is connected to given host_name and port number
(b) Socket ( Inet ADDRESS ip,int port) throw IOException:it create a socket
Using a pre-existing inetaddress object and a port number.
TCP/IP server socket
ď‚´ The server socket.class (available in java net.package) the server.
 It is designed to”Listener”, Wait for clients to connect Doing anything that listener
either
ď‚´ Local or Remote client program to connect them on given port.
ď‚´ When you create server socket it will register itself the system having interest in
client connection
ď‚´ Syntax:
ď‚´ Server socket (int port)throws IOException
Program:
ď‚´ Write down a program demonstrate socket programming for passing message server to client
Client.java
ď‚´ Import java.io.exception;
ď‚´ Import java.io.inputstreamReader;
ď‚´ Import java.net.socket;
ď‚´ Import.java.net.unknownHostException;
ď‚´ Public class client {
ď‚´ Public static void main (string []args){
 System.out.pritln(“sending a request…….”);
ď‚´ Try {
 Socket=new socket (“127.0.01”,1564);
ď‚´ Buffered Reader br =new buffered Reader (newInput stream Reader (s.getinputstream()));
 System.out.println(“ response from server….”);
 System.out.println(“client side:”+br.readLine());s.close();}
ď‚´ Catch(unknown Hostexception e){
 System.out.println(not find the IP-Address for:”+e);}catch (IOException e){ system.out.println(“not found data for socket:”+e);
ď‚´ }}}
Server.java
ď‚´ Import java.io.inputstreamreader;
ď‚´ Import Java.io.printstream;
ď‚´ Import java.net.serverscocket;
ď‚´ Import java.net.socket;
ď‚´ Public class server {
ď‚´ Public static void main (string []args)
ď‚´ { Try{
ď‚´ Serversocketss=New server socket (1564);
 System.out.println(“waiting for request…….”);
 Socket s=ss.accept(); system.out.println(“request accepted”);
ď‚´ Print stream ps=new printstream(s.getoutputstream());
ď‚´ BufferedReader br=new buffered Reader (New input stream Reader (system.in));
system.out.println(“input Data atserver:”);ps.print(br.readline());
 S.close();ss.close();}catch (exception e){system.out.println(“not found data for
socket:”+e);}}}
For output step:
ď‚´ 1)Run server.java
ď‚´ Console:
 Waiting for request….
2) Run client.java
Console:
Waiting for request…..
Request accepted
Input the data at server:
3) Now enter the message at console
Input Data at server:
Welcome at server
4) Then press enter.
Java Data gramsocket class
ď‚´ Java datagram socket class represent a connection-less socket for sending and
receiving datagram packet
ď‚´ A datagram is basically an information but there is no guarantee of content, arrivals
or arrival time
Commonly used constructor of data gram
socket clas
ď‚´ Datagram socket ()throws socket Eeption:
ď‚´ It creates Data Gram socket and bind it with available port number On the local
Host machine
ď‚´ Datagram socket (int port) throws socketEeption:
ď‚´ It creates a data gram socket and bind it with give port number
ď‚´ Datagram socket (intport, inetAddress address) throw socket Eeption:it create a
data gram
ď‚´ Socket with specific Port number and host address
Java 1

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Java 1

  • 1. TCP/IP CLIENT SOCKET TCP/IP SERVER SOCKET URL-DATAGRAM SOCKET Submitted on p.Priyadharshini I-MSC (IT) Department of cs and IT Nadar saraswathi college of arts and science,theni
  • 4. Networking programming introduction Java support network programming to communicate with other Let’s start with network programming introduction
  • 5. • As well as Computer network means group of computer between connect each other medium and transfer data Between them when required • Java support network programming we can make such program In which machine connect in network send and receive Data from other machine network by programming • The first and simple logic send or receive any kind of data or message is we must have address of receiver or sender.computer needs to communicate with another computer, its require other computer s address • java networking programming support concept of socket.a socket identifies an endpoint in a network.the socket communication takes places via a protocol
  • 6. Internet protocol ď‚´ An Internet protocol Lower level connection less ( means no continuing. Connect between the end point) protocol for delivering data into small packet from one computer (address) to another computer (address) across the network (internet) doesn’t guarantee deliver sent packet the destination
  • 8. ď‚´ Socket programming java very important topic and concept of networking programming ď‚´ Java network programming support concept Of socket.a Socket Identifies endpoint Network.socket Communication Take place protocol ď‚´ Socket can be Used connect java input/output system other program May resides any machine on internet local machine.
  • 9. ď‚´ TCP/ip socket: ď‚´ Tcp/IP used to implement Point to point, reliable Bidirectional stream-based connection between.hosts on the internet ď‚´ There are two types of TCP socket available in java ď‚´ Tcp/ip client socket ď‚´ TCP/ip server socket
  • 10. Tcp/ip client socket The socketet class (available in java.net package) client socket designed to connect To server socket And intiate protocol Exchanged There are two constructes used to create client socket type object. (A)Socket (string host_name,int port) throw Unknown Hostexception,IOException :: it creates a socket that is connected to given host_name and port number (b) Socket ( Inet ADDRESS ip,int port) throw IOException:it create a socket Using a pre-existing inetaddress object and a port number.
  • 11. TCP/IP server socket ď‚´ The server socket.class (available in java net.package) the server. ď‚´ It is designed to”Listener”, Wait for clients to connect Doing anything that listener either ď‚´ Local or Remote client program to connect them on given port. ď‚´ When you create server socket it will register itself the system having interest in client connection ď‚´ Syntax: ď‚´ Server socket (int port)throws IOException
  • 12. Program: ď‚´ Write down a program demonstrate socket programming for passing message server to client Client.java ď‚´ Import java.io.exception; ď‚´ Import java.io.inputstreamReader; ď‚´ Import java.net.socket; ď‚´ Import.java.net.unknownHostException; ď‚´ Public class client { ď‚´ Public static void main (string []args){ ď‚´ System.out.pritln(“sending a request…….”); ď‚´ Try { ď‚´ Socket=new socket (“127.0.01”,1564); ď‚´ Buffered Reader br =new buffered Reader (newInput stream Reader (s.getinputstream())); ď‚´ System.out.println(“ response from server….”); ď‚´ System.out.println(“client side:”+br.readLine());s.close();} ď‚´ Catch(unknown Hostexception e){ ď‚´ System.out.println(not find the IP-Address for:”+e);}catch (IOException e){ system.out.println(“not found data for socket:”+e); ď‚´ }}}
  • 13. Server.java ď‚´ Import java.io.inputstreamreader; ď‚´ Import Java.io.printstream; ď‚´ Import java.net.serverscocket; ď‚´ Import java.net.socket; ď‚´ Public class server { ď‚´ Public static void main (string []args) ď‚´ { Try{ ď‚´ Serversocketss=New server socket (1564); ď‚´ System.out.println(“waiting for request…….”); ď‚´ Socket s=ss.accept(); system.out.println(“request accepted”); ď‚´ Print stream ps=new printstream(s.getoutputstream()); ď‚´ BufferedReader br=new buffered Reader (New input stream Reader (system.in)); system.out.println(“input Data atserver:”);ps.print(br.readline()); ď‚´ S.close();ss.close();}catch (exception e){system.out.println(“not found data for socket:”+e);}}}
  • 14. For output step: ď‚´ 1)Run server.java ď‚´ Console: ď‚´ Waiting for request…. 2) Run client.java Console: Waiting for request….. Request accepted Input the data at server: 3) Now enter the message at console Input Data at server: Welcome at server 4) Then press enter.
  • 15. Java Data gramsocket class ď‚´ Java datagram socket class represent a connection-less socket for sending and receiving datagram packet ď‚´ A datagram is basically an information but there is no guarantee of content, arrivals or arrival time
  • 16. Commonly used constructor of data gram socket clas ď‚´ Datagram socket ()throws socket Eeption: ď‚´ It creates Data Gram socket and bind it with available port number On the local Host machine ď‚´ Datagram socket (int port) throws socketEeption: ď‚´ It creates a data gram socket and bind it with give port number ď‚´ Datagram socket (intport, inetAddress address) throw socket Eeption:it create a data gram ď‚´ Socket with specific Port number and host address