Zahn - Unix-Netzwerkprogramminerung mit Threads, Sockets und SSL

5.2 Iterative Server 257
1 #include
2 #include
3 #include
4 #include
5 #include
6 #include
7 #include
8 #include
9
10 #include "server.h"
11
12 int daemon_exit = 0;
13
14 void sig_handler( int sig )
15 {
16 daemon_exit = 1;
17 return;
18 }
Beispiel 5.9. iter-srv.c
19
20 int main( int argc, char *argv[] )
21 {
22 int sd, client;
23 socklen_t slen;
24 struct sockaddr_storage sa;
25 struct sigaction action;
26
27 /* horchenden Socket öffnen (passive open) */
28 if( ( sd = tcp_listen( NULL, SRVPORT , BACKLOG ) ) < 0 )
29 exit( EXIT_FAILURE );
30
31 /* Signalbehandlungsroutine für SIGTERM installieren */
32 action.sa_handler = sig_handler;
33 sigemptyset( &action.sa_mask );
34 action.sa_flags = 0;
35
36 if( sigaction( SIGTERM , &action , NULL ) < 0 )
37 {
38 fprintf( stderr , "sigaction() failed: %s",
39 strerror( errno ) );
40 close( sd ); /* passiven Socket schließen */
41 exit( EXIT_FAILURE );
42 }
43
44 /* Prozeß in einen Daemon umwandeln */
45 daemon_init( argv[0], PIDFILE , LOG_DAEMON );
46
47 init_srv_stats(); /* CPU-Statistik initialisieren */