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If we can't expand our list of entry guards (e.g. because we're

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using bridges or we have StrictEntryNodes set), don't mark relays
down when they fail a directory request. Otherwise we're too quick
to mark all our entry points down.


svn:r12755
This commit is contained in:
Roger Dingledine 2007-12-10 17:16:41 +00:00
parent ee6ae92670
commit 52363d23d7
4 changed files with 12 additions and 6 deletions
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4
ChangeLog
View file

@ -51,6 +51,10 @@ Changes in version 0.2.0.13-alpha - 2007-12-??
running an obsolete version, it used the string "OLD" to describe
it. Yet the "getinfo" interface used the string "OBSOLETE". Now use
"OBSOLETE" in both cases.
- If we can't expand our list of entry guards (e.g. because we're
using bridges or we have StrictEntryNodes set), don't mark relays
down when they fail a directory request. Otherwise we're too quick
to mark all our entry points down.
o Minor features:
- On USR1, when dmalloc is in use, log the top 10 memory

10
src/or/circuitbuild.c
View file

@ -2430,8 +2430,8 @@ entry_guards_prepend_from_config(void)
/** Return 1 if we're fine adding arbitrary routers out of the
* directory to our entry guard list. Else return 0. */
static int
can_grow_entry_list(or_options_t *options)
int
entry_list_can_grow(or_options_t *options)
{
if (options->StrictEntryNodes)
return 0;
@ -2469,7 +2469,7 @@ choose_random_entry(cpath_build_state_t *state)
if (should_add_entry_nodes)
entry_guards_prepend_from_config();
if (can_grow_entry_list(options) &&
if (entry_list_can_grow(options) &&
(! entry_guards ||
smartlist_len(entry_guards) < options->NumEntryGuards))
pick_entry_guards();
@ -2498,7 +2498,7 @@ choose_random_entry(cpath_build_state_t *state)
* using him.
* (We might get 2 live-but-crummy entry guards, but so be it.) */
if (smartlist_len(live_entry_guards) < 2) {
if (can_grow_entry_list(options)) {
if (entry_list_can_grow(options)) {
/* still no? try adding a new entry then */
/* XXX if guard doesn't imply fast and stable, then we need
* to tell add_an_entry_guard below what we want, or it might
@ -2518,7 +2518,7 @@ choose_random_entry(cpath_build_state_t *state)
need_capacity = 0;
goto retry;
}
if (!r && !can_grow_entry_list(options) && consider_exit_family) {
if (!r && !entry_list_can_grow(options) && consider_exit_family) {
/* still no? if we're using bridges or have strictentrynodes
* set, and our chosen exit is in the same family as all our
* bridges/entry guards, then be flexible about families. */

3
src/or/directory.c
View file

@ -500,7 +500,8 @@ connection_dir_request_failed(dir_connection_t *conn)
me->address, me->dir_port);
return; /* this was a test fetch. don't retry. */
}
router_set_status(conn->identity_digest, 0); /* don't try him again */
if (entry_list_can_grow(get_options()))
router_set_status(conn->identity_digest, 0); /* don't try him again */
if (conn->_base.purpose == DIR_PURPOSE_FETCH_DIR ||
conn->_base.purpose == DIR_PURPOSE_FETCH_RUNNING_LIST) {
log_info(LD_DIR, "Giving up on directory server at '%s:%d'; retrying",

1
src/or/or.h
View file

@ -2481,6 +2481,7 @@ void entry_guards_compute_status(void);
int entry_guard_register_connect_status(const char *digest, int succeeded,
time_t now);
void entry_nodes_should_be_added(void);
int entry_list_can_grow(or_options_t *options);
routerinfo_t *choose_random_entry(cpath_build_state_t *state);
int entry_guards_parse_state(or_state_t *state, int set, char **msg);
void entry_guards_update_state(or_state_t *state);