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r11885@catbus: nickm | 2007-02-23 13:34:24 -0500

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Fix an XXXX012: make entry guards _really_ get retried when the network comes back online.


svn:r9622
This commit is contained in:
Nick Mathewson 2007-02-23 18:34:35 +00:00
parent 4aa9745dc1
commit f1d207b29a
2 changed files with 13 additions and 12 deletions
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2
ChangeLog
View File

@ -48,6 +48,8 @@ Changes in version 0.1.2.8-alpha - 2007-??-??
wants (because it has received fresh networkstatuses in the meantime),
do not warn the user. Cache the descriptor if we're a cache; drop it
if we aren't.
- Make earlier entry guards _really_ get retried when the network comes
back online.
o Minor features (controller):
- Warn the user when an application uses the obsolete binary v0

23
src/or/circuitbuild.c
View File

@ -25,8 +25,10 @@ extern circuit_t *global_circuitlist;
typedef struct {
char nickname[MAX_NICKNAME_LEN+1];
char identity[DIGEST_LEN];
uint8_t made_contact; /**< 0 if we have never connected to this router,
* 1 if we have. */
unsigned int made_contact : 1; /**< 0 if we have never connected to this
* router, 1 if we have. */
unsigned int can_retry : 1; /**< Should we retry connecting to this entry,
* in spite of having it marked as unreachable?*/
time_t bad_since; /**< 0 if this guard is currently usable, or the time at
* which it was observed to become (according to the
* directory or the user configuration) unusable. */
@ -1881,7 +1883,8 @@ entry_is_live(entry_guard_t *e, int need_uptime, int need_capacity,
routerinfo_t *r;
if (e->bad_since)
return NULL;
if (!assume_reachable &&
/* no good if it's unreachable, unless assume_unreachable or can_retry. */
if ((!assume_reachable && !e->can_retry) &&
e->unreachable_since && !entry_is_time_to_retry(e, time(NULL)))
return NULL;
r = router_get_by_digest(e->identity);
@ -2162,6 +2165,7 @@ entry_guard_register_connect_status(const char *digest, int succeeded,
if (entry->unreachable_since) {
log_info(LD_CIRC, "Entry guard '%s' (%s) is now reachable again. Good.",
entry->nickname, buf);
entry->can_retry = 0;
entry->unreachable_since = 0;
entry->last_attempted = now;
control_event_guard(entry->nickname, entry->identity, "UP");
@ -2197,6 +2201,7 @@ entry_guard_register_connect_status(const char *digest, int succeeded,
entry->nickname, buf, tbuf);
entry->last_attempted = now;
}
entry->can_retry = 0; /* We gave it an early chance; no good. */
}
if (first_contact) {
@ -2205,19 +2210,13 @@ entry_guard_register_connect_status(const char *digest, int succeeded,
* and close this connection so we don't use it before we've given
* the others a shot. */
SMARTLIST_FOREACH(entry_guards, entry_guard_t *, e, {
routerinfo_t *r;
if (e == entry)
break;
if (e->made_contact) {
r = entry_is_live(e, 0, 1, 1);
if (r && !r->is_running) {
routerinfo_t *r = entry_is_live(e, 0, 1, 1);
if (r && e->unreachable_since) {
refuse_conn = 1;
/* XXXX012 I think this might be broken; when picking entry nodes,
* we only look at unreachable_since and is_time_to_retry, and we
* pay no attention to is_running. If this is indeed the case, we
* can fix the bug by adding a retry_as_entry flag to
* routerinfo_t. -NM */
r->is_running = 1;
e->can_retry = 1;
}
}
});