/*! \brief starts the tcp processes */
int tcp_init_children(int *chd_rank)
{
int r;
//int sockfd[2];
int reader_fd[2]; /* for comm. with the tcp children read */
pid_t pid;
struct socket_info *si;
atomic_t *load_p;
/* estimate max fd. no:
* 1 tcp send unix socket/all_proc,
* + 1 udp sock/udp proc + 1 tcp_child sock/tcp child*
* + no_listen_tcp */
for(r=0, si=tcp_listen; si; si=si->next, r++);
#ifdef USE_TLS
if (! tls_disable)
for (si=tls_listen; si; si=si->next, r++);
#endif
tcp_max_fd_no=counted_processes*2 +r-1 /* timer */ +3; /* stdin/out/err*/
tcp_max_fd_no+=tcp_max_connections;
/* create the tcp sock_info structures */
/* copy the sockets --moved to main_loop*/
load_p = shm_malloc(sizeof(atomic_t));
if (!load_p)
goto error;
memset(load_p,0,sizeof(atomic_t));
register_tcp_load_stat(load_p);
/* fork children & create the socket pairs*/
for(r=0; r<tcp_children_no; r++){
/*if (socketpair(AF_UNIX, SOCK_STREAM, 0, sockfd)<0){
LM_ERR("socketpair failed: %s\n", strerror(errno));
goto error;
}*/
if (socketpair(AF_UNIX, SOCK_STREAM, 0, reader_fd)<0){
LM_ERR("socketpair failed: %s\n", strerror(errno));
goto error;
}
(*chd_rank)++;
pid=internal_fork("SIP receiver TCP");
if (pid<0){
LM_ERR("fork failed\n");
goto error;
}else if (pid>0){
/* parent */
close(reader_fd[1]);
tcp_children[r].pid=pid;
tcp_children[r].proc_no=process_no;
tcp_children[r].busy=0;
tcp_children[r].n_reqs=0;
tcp_children[r].unix_sock=reader_fd[0];
}else{
/* child */
set_proc_attrs("TCP receiver");
pt[process_no].idx=r;
pt[process_no].load = load_p;
bind_address=0; /* force a SEGFAULT if someone uses a non-init.
bind address on tcp */
if (init_child(*chd_rank) < 0) {
LM_ERR("init_children failed\n");
exit(-1);
}
tcp_receive_loop(reader_fd[1]);
exit(-1);
}
}
return 0;
error:
return -1;
}
int tcp_start_processes(int *chd_rank, int *startup_done)
{
int r, n;
int reader_fd[2]; /* for comm. with the tcp children read */
pid_t pid;
struct socket_info *si;
stat_var *load_p = NULL;
if (tcp_disabled)
return 0;
/* estimate max fd. no:
* 1 tcp send unix socket/all_proc,
* + 1 udp sock/udp proc + 1 tcp_child sock/tcp child*
* + no_listen_tcp */
for( r=0,n=PROTO_FIRST ; n<PROTO_LAST ; n++ )
if ( is_tcp_based_proto(n) )
for(si=protos[n].listeners; si ; si=si->next,r++ );
if (register_tcp_load_stat( &load_p )!=0) {
LM_ERR("failed to init tcp load statistic\n");
goto error;
}
/* start the TCP workers & create the socket pairs */
for(r=0; r<tcp_children_no; r++){
/* create sock to communicate from TCP main to worker */
if (socketpair(AF_UNIX, SOCK_STREAM, 0, reader_fd)<0){
LM_ERR("socketpair failed: %s\n", strerror(errno));
goto error;
}
(*chd_rank)++;
pid=internal_fork("SIP receiver TCP");
if (pid<0){
LM_ERR("fork failed\n");
goto error;
}else if (pid>0){
/* parent */
close(reader_fd[1]);
tcp_children[r].pid=pid;
tcp_children[r].proc_no=process_no;
tcp_children[r].busy=0;
tcp_children[r].n_reqs=0;
tcp_children[r].unix_sock=reader_fd[0];
}else{
/* child */
set_proc_attrs("TCP receiver");
pt[process_no].idx=r;
pt[process_no].load = load_p;
if (init_child(*chd_rank) < 0) {
LM_ERR("init_children failed\n");
report_failure_status();
if (startup_done)
*startup_done = -1;
exit(-1);
}
/* was startup route executed so far ? */
if (startup_done!=NULL && *startup_done==0 && r==0) {
LM_DBG("runing startup for first TCP\n");
if(run_startup_route()< 0) {
LM_ERR("Startup route processing failed\n");
report_failure_status();
*startup_done = -1;
exit(-1);
}
*startup_done = 1;
}
report_conditional_status( 1, 0);
tcp_worker_proc( reader_fd[1] );
exit(-1);
}
}
/* wait for the startup route to be executed */
if (startup_done)
while (!(*startup_done)) {
usleep(5);
handle_sigs();
}
/* start the TCP manager process */
if ( (pid=internal_fork( "TCP main"))<0 ) {
LM_CRIT("cannot fork tcp main process\n");
goto error;
}else if (pid==0){
/* child */
/* close the TCP inter-process sockets */
close(unix_tcp_sock);
unix_tcp_sock = -1;
close(pt[process_no].unix_sock);
pt[process_no].unix_sock = -1;
report_conditional_status( (!no_daemon_mode), 0);
tcp_main_server();
exit(-1);
}
return 0;
error:
return -1;
}
