static void spawn_handling_thread(struct ns_connection *nc) {
struct ns_mgr dummy = {};
sock_t sp[2];
struct ns_connection *c[2];
/*
* Create a socket pair, and wrap each socket into the connection with
* dummy event manager.
* c[0] stays in this thread, c[1] goes to another thread.
*/
ns_socketpair(sp, SOCK_STREAM);
c[0] = ns_add_sock(&dummy, sp[0], forwarder_ev_handler);
c[1] = ns_add_sock(&dummy, sp[1], nc->listener->priv_1);
/* Interlink client connection with c[0] */
link_conns(c[0], nc);
/*
* Switch c[0] manager from the dummy one to the real one. c[1] manager
* will be set in another thread, allocated on stack of that thread.
*/
ns_add_conn(nc->mgr, c[0]);
/*
* Dress c[1] as nc.
* TODO(lsm): code in accept_conn() looks similar. Refactor.
*/
c[1]->listener = nc->listener;
c[1]->proto_handler = nc->proto_handler;
c[1]->proto_data = nc->proto_data;
c[1]->user_data = nc->user_data;
ns_start_thread(per_connection_thread_function, c[1]);
}
static struct ns_connection *accept_conn(struct ns_connection *ls) {
struct ns_connection *c = NULL;
union socket_address sa;
socklen_t len = sizeof(sa);
sock_t sock = INVALID_SOCKET;
/* NOTE(lsm): on Windows, sock is always > FD_SETSIZE */
if ((sock = accept(ls->sock, &sa.sa, &len)) == INVALID_SOCKET) {
} else if ((c = ns_add_sock(ls->mgr, sock, ls->handler)) == NULL) {
closesocket(sock);
#ifdef NS_ENABLE_SSL
} else if (ls->ssl_ctx != NULL &&
((c->ssl = SSL_new(ls->ssl_ctx)) == NULL ||
SSL_set_fd(c->ssl, sock) != 1)) {
DBG(("SSL error"));
ns_close_conn(c);
c = NULL;
#endif
} else {
c->listener = ls;
c->proto_data = ls->proto_data;
c->proto_handler = ls->proto_handler;
c->user_data = ls->user_data;
ns_call(c, NS_ACCEPT, &sa);
DBG(("%p %d %p %p", c, c->sock, c->ssl_ctx, c->ssl));
}
return c;
}
void sj_prompt_init_hal() {
int fds[2];
if (!ns_socketpair(fds, SOCK_STREAM)) {
printf("cannot create a socketpair\n");
exit(1);
}
ns_start_thread(stdin_thread, (void *) (uintptr_t) fds[1]);
ns_add_sock(&sj_mgr, fds[0], prompt_handler);
}
static const char *test_thread(void) {
struct ns_mgr mgr;
struct ns_connection *nc;
sock_t sp[2];
char buf[20];
ASSERT(ns_socketpair(sp) == 1);
ns_start_thread(thread_func, &sp[1]);
ns_mgr_init(&mgr, NULL);
ASSERT((nc = ns_add_sock(&mgr, sp[0], eh2)) != NULL);
nc->user_data = buf;
poll_mgr(&mgr, 50);
ASSERT(strcmp(buf, ":-)") == 0);
ns_mgr_free(&mgr);
closesocket(sp[1]);
return NULL;
}
int main(int argc, char *argv[]) {
struct ns_mgr mgr;
if (argc != 3) {
fprintf(stderr, "Usage: %s <port> <client|server>\n", argv[0]);
exit(EXIT_FAILURE);
} else if (strcmp(argv[2], "client") == 0) {
int fds[2];
struct ns_connection *ioconn, *server_conn;
ns_mgr_init(&mgr, NULL, client_handler);
// Connect to the pubsub server
server_conn = ns_connect(&mgr, argv[1], NULL);
if (server_conn == NULL) {
fprintf(stderr, "Cannot connect to port %s\n", argv[1]);
exit(EXIT_FAILURE);
}
// Create a socketpair and give one end to the thread that reads stdin
ns_socketpair(fds);
ns_start_thread(stdin_thread, &fds[1]);
// The other end of a pair goes inside the server
ioconn = ns_add_sock(&mgr, fds[0], NULL);
ioconn->flags |= NSF_USER_1; // Mark this so we know this is a stdin
ioconn->user_data = server_conn;
} else {
// Server code path
ns_mgr_init(&mgr, NULL, server_handler);
ns_bind(&mgr, argv[1], NULL);
printf("Starting pubsub server on port %s\n", argv[1]);
}
for (;;) {
ns_mgr_poll(&mgr, 1000);
}
ns_mgr_free(&mgr);
return EXIT_SUCCESS;
}