?? client socket code.c
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#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <sys/un.h>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
int main()
{
int sockfd;
int len;
struct sockaddr_in address;
int result;
char ch = 'A';
sockfd = socket(AF_INET, SOCK_STREAM, 0);
address.sin_family = AF_INET;
address.sin_addr.s_addr = inet_addr("127.0.0.1");
address.sin_port = 30000;
len = sizeof(address);
result = connect(sockfd, (struct sockaddr *)&address, len);
if (result == -1) {
perror("client connect failure");
exit(1);
}
write(sockfd, &ch, 1);
read(sockfd, &ch, 1);
printf("\nchar read from server is %c\n", ch);
close(sockfd);
exit(0);
}
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