#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

#define SERVER_PORT 5432
#define MAX_LINE 256

int
main(int argc, char *argv[])
{
    FILE *fp;
    struct hostent *hp;
    struct sockaddr_in sin;
    char *host;
    char buf[MAX_LINE];
    int s;
    int len;

    if (argc == 2) {
	host = argv[1];
    } else {
	fprintf(stderr, "usage: client host\n");
	exit(1);
    }

    /* translate host name into peer's IP address */
    hp = gethostbyname(host);
    if (hp == NULL) {
	fprintf(stderr, "client: unknown host: %s\n", host);
    }

    /* build address data structure */
    bzero((char *)&sin, sizeof(sin));
    sin.sin_family = AF_INET;
    bcopy(hp->h_addr, (char *)&sin.sin_addr, hp->h_length);
    sin.sin_port = htons(SERVER_PORT);

    /* active open */
    if ((s = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
	perror("client: socket");
	exit(1);
    }
    if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
	perror("client: connect");
	close(s);
	exit(1);
    }

    /* main loop: get and send lines of text */
    while (fgets(buf, sizeof(buf), stdin)) {
	buf[MAX_LINE-1] = 0;
	len = strlen(buf) + 1;
	send(s, buf, len, 0);
    }
}