#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>

#define PORT 20000

#define MAXDATASIZE 100 

int main(int argc, char *argv[])
{
    int sockfd, numbytes;
    int len;
    char buf[MAXDATASIZE];
    struct hostent *he;
    struct sockaddr_in their_addr; 

    if (argc != 2) {
        fprintf(stderr,"usage: client hostname\n");
        exit(1);
    }

    if ((he=gethostbyname(argv[1])) == NULL) {
        herror("gethostbyname");
        exit(1);
    }

    if ((sockfd = socket(PF_INET, SOCK_STREAM, 0)) == -1) {
        perror("socket");
        exit(1);
    }

    their_addr.sin_family = AF_INET; 
    their_addr.sin_port = htons(PORT); 
    their_addr.sin_addr = *((struct in_addr *)he->h_addr);
    memset(&(their_addr.sin_zero), '\0', 8);

    if (connect(sockfd, (struct sockaddr *)&their_addr,
                                          sizeof(struct sockaddr)) == -1) {
        perror("connect");
        exit(1);
    }

while (strcmp(buf, ".")) {

    if ((numbytes=recv(sockfd, buf, MAXDATASIZE-1, 0)) == -1) {
        perror("recv");
        exit(1);
    }
    buf[numbytes] = '\0';
    printf("%s\n", buf);

printf("Input: ", str);
scanf("%s", str);
len = strlen("%s");
send(sockfd, "SAY lol", len, 0);

}

    return 0;
}