int main(){
printf("hello how are you?\n");
logtest();
printf("reach the end point!\n");
//cgi_trace_line();
return 0;
}
/* Return a listening socket after setting various characteristics on it.
Returns -1 on error. */
int do_listen(int type, int proto, const union sockaddr_u *srcaddr_u)
{
int sock = 0, option_on = 1;
size_t sa_len;
if (type != SOCK_STREAM && type != SOCK_DGRAM)
return -1;
/* We need a socket that can be inherited by child processes in
ncat_exec_win.c, for --exec and --sh-exec. inheritable_socket is from
nbase. */
sock = inheritable_socket(srcaddr_u->storage.ss_family, type, proto);
if (sock < 0)
return -1;
Setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &option_on, sizeof(int));
/* IPPROTO_IPV6 is defined in Visual C++ only when _WIN32_WINNT >= 0x501.
Nbase's nbase_winunix.h defines _WIN32_WINNT to a lower value for
compatibility with older versions of Windows. This code disables IPv6 sockets
that also receive IPv4 connections. This is the default on Windows anyway so
it doesn't make a difference.
http://support.microsoft.com/kb/950688
http://msdn.microsoft.com/en-us/library/bb513665
*/
#ifdef IPPROTO_IPV6
#ifdef IPV6_V6ONLY
if (srcaddr_u->storage.ss_family == AF_INET6) {
int set = 1;
/* Tell it to not try and bind to IPV4 */
if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &set, sizeof(set)) == -1)
die("Unable to set IPV6 socket to bind only to IPV6");
}
#endif
#endif
#ifdef HAVE_SYS_UN_H
if (srcaddr_u->storage.ss_family == AF_UNIX)
sa_len = SUN_LEN(&srcaddr_u->un);
else
#endif
#ifdef HAVE_SOCKADDR_SA_LEN
sa_len = srcaddr_u->sockaddr.sa_len;
#else
sa_len = sizeof(*srcaddr_u);
#endif
if (bind(sock, &srcaddr_u->sockaddr, sa_len) < 0) {
#ifdef HAVE_SYS_UN_H
if (srcaddr_u->storage.ss_family == AF_UNIX)
bye("bind to %s: %s.", srcaddr_u->un.sun_path,
socket_strerror(socket_errno()));
else
#endif
bye("bind to %s:%hu: %s.", inet_socktop(srcaddr_u),
inet_port(srcaddr_u), socket_strerror(socket_errno()));
}
if (type == SOCK_STREAM)
Listen(sock, BACKLOG);
if (o.verbose) {
#ifdef HAVE_SYS_UN_H
if (srcaddr_u->storage.ss_family == AF_UNIX)
loguser("Listening on %s\n", srcaddr_u->un.sun_path);
else
#endif
loguser("Listening on %s:%hu\n", inet_socktop(srcaddr_u), inet_port(srcaddr_u));
}
if (o.test)
logtest("LISTEN\n");
return sock;
}
