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https://gitlab.torproject.org/tpo/core/tor.git
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Every 60 seconds, check whether the listeners are still alive, and relaunch the dead ones.
svn:r2581
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parent
04ca660b2a
commit
57f09573f5
@ -553,12 +553,47 @@ static void listener_close_if_present(int type) {
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}
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static int retry_listeners(int type, struct config_line_t *cfg,
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int port_option, const char *default_addr)
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int port_option, const char *default_addr,
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int force)
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{
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if (!force) {
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int want, have, n_conn, i;
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struct config_line_t *c;
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connection_t *conn;
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connection_t **carray;
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/* How many should there be? */
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if (cfg && port_option) {
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want = 0;
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for (c = cfg; c; c = c->next)
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++want;
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} else if (port_option) {
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want = 1;
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} else {
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want = 0;
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}
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/* How many are there actually? */
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have = 0;
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get_connection_array(&carray,&n_conn);
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for(i=0;i<n_conn;i++) {
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conn = carray[i];
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if (conn->type == type && !conn->marked_for_close)
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++have;
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}
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/* If we have the right number of listeners, do nothing. */
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if (have == want)
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return 0;
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/* Otherwise, warn the user and relaunch. */
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log_fn(LOG_WARN,"We have %d %s(s) open, but we want %d; relaunching.",
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have, conn_type_to_string[type], want);
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}
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listener_close_if_present(type);
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if (port_option) {
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if (!cfg) {
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if (connection_create_listener(default_addr, (uint16_t) port_option,
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if (connection_create_listener(default_addr, (uint16_t) port_option,
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type)<0)
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return -1;
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} else {
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@ -572,18 +607,21 @@ static int retry_listeners(int type, struct config_line_t *cfg,
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return 0;
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}
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/** (Re)launch listeners for each port you should have open.
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/** (Re)launch listeners for each port you should have open. If
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* <b>force</b> is true, close and relaunch all listeners. If <b>force</b>
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* is false, then only relaunch listeners when we have the wrong number of
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* connections for a given type.
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*/
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int retry_all_listeners(void) {
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int retry_all_listeners(int force) {
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if (retry_listeners(CONN_TYPE_OR_LISTENER, options.ORBindAddress,
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options.ORPort, "0.0.0.0")<0)
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options.ORPort, "0.0.0.0", force)<0)
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return -1;
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if (retry_listeners(CONN_TYPE_DIR_LISTENER, options.DirBindAddress,
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options.DirPort, "0.0.0.0")<0)
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options.DirPort, "0.0.0.0", force)<0)
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return -1;
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if (retry_listeners(CONN_TYPE_AP_LISTENER, options.SocksBindAddress,
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options.SocksPort, "127.0.0.1")<0)
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options.SocksPort, "127.0.0.1", force)<0)
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return -1;
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return 0;
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@ -502,6 +502,7 @@ static void run_scheduled_events(time_t now) {
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static long time_to_fetch_directory = 0;
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static time_t last_uploaded_services = 0;
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static time_t last_rotated_certificate = 0;
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static time_t time_to_check_listeners = 0;
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int i;
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/** 0. See if we've been asked to shut down and our timeout has
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@ -596,6 +597,12 @@ static void run_scheduled_events(time_t now) {
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*/
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connection_expire_held_open();
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/** 3d. And every 60 secionds, we relaunch listeners if any died. */
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if (time_to_check_listeners < now) {
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retry_all_listeners(0); /* 0 means "only if some died." */
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time_to_check_listeners = now+60;
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}
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/** 4. Every second, we try a new circuit if there are no valid
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* circuits. Every NewCircuitPeriod seconds, we expire circuits
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* that became dirty more than NewCircuitPeriod seconds ago,
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@ -744,7 +751,7 @@ static int do_hup(void) {
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log_fn(LOG_ERR,"Error reloading rendezvous service keys");
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return -1;
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}
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if(retry_all_listeners() < 0) {
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if(retry_all_listeners(1) < 0) {
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log_fn(LOG_ERR,"Failed to bind one of the listener ports.");
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return -1;
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}
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@ -808,7 +815,7 @@ static int do_main_loop(void) {
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}
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/* start up the necessary listeners based on which ports are non-zero. */
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if(retry_all_listeners() < 0) {
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if(retry_all_listeners(1) < 0) {
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log_fn(LOG_ERR,"Failed to bind one of the listener ports.");
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return -1;
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}
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@ -1093,7 +1093,7 @@ int _connection_mark_for_close(connection_t *conn);
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void connection_expire_held_open(void);
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int connection_connect(connection_t *conn, char *address, uint32_t addr, uint16_t port);
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int retry_all_listeners(void);
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int retry_all_listeners(int force);
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void connection_bucket_init(void);
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void connection_bucket_refill(struct timeval *now);
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