Repository navigation
Expand file tree
/
Copy pathnet.h
More file actions
62 lines (43 loc) · 1.38 KB
/
Copy pathnet.h
File metadata and controls
62 lines (43 loc) · 1.38 KB
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
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
#ifndef _NET_H
#define _NET_H
void do_port_ping (char *the_name, int port_number)
{
int my_socket;
char **pointer_pointer;
char answer[INET_ADDRSTRLEN];
struct hostent *returned_host;
struct sockaddr_in outgoing_address;
printf("\ndestination : %s:%d\n", the_name, port_number);
returned_host = gethostbyname(the_name);
if (returned_host==NULL)
{
fprintf(stderr,"error %d\n", h_errno);
return;
}
printf("host's official name: %s\n", returned_host->h_name);
for (pointer_pointer=returned_host->h_aliases; *pointer_pointer; pointer_pointer++)
{
printf("alias : %s\n", *pointer_pointer);
}
for (pointer_pointer=returned_host->h_addr_list; *pointer_pointer; pointer_pointer++)
{
inet_ntop(AF_INET, (void *)*pointer_pointer, answer, sizeof(answer));
printf("IP address : %s\n", answer);
my_socket = socket(AF_INET, SOCK_STREAM,0);
if (my_socket<0)
{
perror("socket()");
return;
}
memset(&outgoing_address, 0, sizeof(outgoing_address));
outgoing_address.sin_family = AF_INET;
outgoing_address.sin_port = htons(port_number);
memmove(&outgoing_address.sin_addr, *pointer_pointer, sizeof(&outgoing_address.sin_addr));
if(connect(my_socket, (struct sockaddr*)&outgoing_address, sizeof(outgoing_address)))
{
perror("connect()");
return ;
}
}
}
#endif //_NET_H