-
Notifications
You must be signed in to change notification settings - Fork 0
/
client.c
43 lines (37 loc) · 1.16 KB
/
client.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
#include "common.h"
int main(int argc, char** argv) {
int sockfd, n;
char recvline[MAXLINE + 1];
struct sockaddr_in servaddr;
if (argc != 2) {
fprintf(stderr, "USAGE: a.out <IPaddress>\n");
exit(EXIT_FALIURE);
}
if ( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
fprintf(stderr, "socket error.\n");
exit(EXIT_FALIURE);
}
bzero(&servaddr, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(13); // daytime server port
if (inet_pton(AF_INET, argv[1], &servaddr.sin_addr) <= 0) {
fprintf(stderr, "inet_pton error for %s\n", argv[1]);
exit(EXIT_FALIURE);
}
if ( ( connect(sockfd,(SA*) &servaddr, sizeof(servaddr)) ) < 0) {
fprintf(stderr, "connect error.\n");
exit(EXIT_FALIURE);
}
while ( (n = read(sockfd, recvline, MAXLINE)) > 0) {
recvline[n] = 0;
if (fputs(recvline, stdout) == EOF) {
fprintf(stderr, "fputs error.\n");
exit(EXIT_FALIURE);
}
}
if (n < 0) {
fprintf(stderr, "read error.\n");
exit(EXIT_FALIURE);
}
exit(EXIT_SUCCESS);
}