Hamming Code -- Client

#include <stdio.h>

#include <stdlib.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <arpa/inet.h>

#include <unistd.h>

#include <string.h>

#include <math.h>

/* Hamming code generator */

void ham_code_generator(char msg[255],char temp[255])

{

int hamBit = 0,i,j,k,sum;

int len = strlen(msg);

printf("\n str len is %d\n",len);

bzero(temp,255);

while( pow(2,hamBit) < len )

hamBit++;

printf("hambit: %d\n",hamBit);

/* Setting the hamming bits in temp arr to 'h' */

for(i = 0;i < hamBit ;i++)

{

k=pow(2,i);

temp[k] = 'h';

}

k=len-2;

j =0;

for(i = k+hamBit;i >= 1;i--)

{

if(temp[i]!='h'){

temp[i] = msg[j];j++;}

}

// Assigning the hamming bits

for(i=0;i<hamBit;i++)

{

k=pow(2,i);

sum = 0;

for(j=k ; j<= ((len-2) + hamBit) ; j++)

{

if((k&j) == k)

sum += (temp[j] - 48);

}

sum = sum % 2;

if(sum == 0)

temp[k] = '0';

else

temp[k] = '1';

}

for(i = ((len-2)+hamBit) ; i >= 1 ; i--)

{

printf(" %c ",temp[i]);

}

printf("\n");

strcpy(msg,temp);

strcat(msg,"\n");

}

void error(const char *msg)

{

perror(msg);

exit(1);

}

/* Main Funnction */

void main(int argc,char *argv[])

{

/* Check if all inputs are correct */

if (argc < 3)

{

error("Provide the port number and IP !!!");

}

//TODO (1) Declaration

int sockfd,newsockfd,i;

struct sockaddr_in serv_addr,cli_addr;

char msg[255],reply[255];

serv_addr.sin_family = AF_INET;

serv_addr.sin_addr.s_addr = inet_addr(argv[1]);

serv_addr.sin_port = htons(atoi(argv[2]));

/* Socket */

sockfd = socket(AF_INET, SOCK_STREAM, 0);

if (sockfd < 0)

{

error("Socket Error!!!");

}

/* Connect */

newsockfd = connect(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr));

if (newsockfd < 0)

{

error("Accept Error!!!");

}

while(1)

{

// Read And Write msg

bzero(&msg , 255);

bzero(&reply , 255);

printf("You : ");

fgets(msg , 255 , stdin);

ham_code_generator(msg);

write(sockfd , msg , 255);

read(sockfd , reply , 255);

printf("Server : %s\n",reply);

if(strcmp(reply,"Bye\n")==0 || strcmp(msg,"Bye\n")==0)

break;

}

close(sockfd);

}