Udp client server chat program

udp client sever chat program

UDP server 

#include<stdio.h>

#include<unistd.h>

#include<sys/types.h>

#include<netinet/in.h>

#include<string.h>

#include<sys/socket.h>

main()

{

        int sd,i=0,port=5015;

        char buffer[30];

        unsigned int t;

        struct sockaddr_in ser,cli;

        if((sd=socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP))==-1)

        {

                printf("Error in Socket creation with  server\n");

                return 0;

        }

        bzero((char *)&ser,sizeof(ser));

        printf("The port address is %d\n",port);

        ser.sin_family=AF_INET;

        ser.sin_port=htons(port);

        ser.sin_addr.s_addr=inet_addr("192.168.0.200");

        if(bind(sd,(struct sockaddr *)&ser,sizeof(ser))==-1)

        {       printf("Error in  Binding problem due to port busy");

       return (0);

  }

  printf("\t\tServer\n");

  t=sizeof(cli);

  printf("\n client accepted\n");

  while(1)

  {

          recvfrom(sd,buffer,50,0,(struct sockaddr*)&cli,&t);

          printf(" Data from client:");

          puts(buffer);

          printf(" Data to client:");

          gets(buffer);

          sendto(sd,buffer,50,0,(struct sockaddr*)&cli,sizeof(cli));

         if(buffer[i]=='*')

                  break;

  }

  close(sd);

  return 0;

  }

Server o/p:

[cs2910007@localhost netlab]$ ./a.out

The port address is 5015

                                                Server

 client accepted

 Data from client:58

 Data to client:856

 Data from client:412

 Data to client:952

 Data from client:782

 Data to client:*

[cs2910007@localhost netlab]$

UDP Client CHAT

#include<stdio.h>

#include<unistd.h>

#include<sys/types.h>

#include<netinet/in.h>

#include<string.h>

#include<sys/socket.h>

main()

{

        int sd,i=0,port=5015;

        unsigned int t;

        char cont[30]="\0";

        struct sockaddr_in ser,cli;

        if((sd=socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP))==-1)

        {

                printf("Error in Socket creation with the server\n");

                return 0;

        }

        bzero((char *)&ser,sizeof(ser));

        printf("The port address is %d\n",port);

        ser.sin_family=AF_INET;

        ser.sin_port=htons(port);

        ser.sin_addr.s_addr=inet_addr("192.168.0.200");

        if(connect(sd,(struct sockaddr *)&ser,sizeof(ser))==-1)

 {

      printf("Error in connecting due to port busy");

      return 0;

 }

 t=sizeof(ser);

 printf("This is client\n");

 while(1)

 {

         printf(" Data to server:");

         gets(cont);

         sendto(sd,cont,50,0,(struct sockaddr*)&ser,sizeof(ser));

         recvfrom(sd,cont,50,0,(struct sockaddr*)&ser,&t);

         printf(" Data from server:");

         puts(cont);

         if(cont[i]=='*')

                break;

 }

 close(sd);

 return 0;

 }

Client o/p:

The port address is 5015

This is client

 Data to server:58

 Data from server:856

 Data to server:412

 Data from server:952

 Data to server:782

 Data from server:*

[cs2910007@localhost netlab]$