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-rw-r--r--src/feature/nodelist/node_select.h28
1 files changed, 17 insertions, 11 deletions
diff --git a/src/feature/nodelist/node_select.h b/src/feature/nodelist/node_select.h
index 2e67f990f6..1776d8ea1a 100644
--- a/src/feature/nodelist/node_select.h
+++ b/src/feature/nodelist/node_select.h
@@ -14,20 +14,26 @@
/** Flags to be passed to control router_choose_random_node() to indicate what
* kind of nodes to pick according to what algorithm. */
typedef enum router_crn_flags_t {
+ /* Try to choose stable nodes. */
CRN_NEED_UPTIME = 1<<0,
+ /* Try to choose nodes with a reasonable amount of bandwidth. */
CRN_NEED_CAPACITY = 1<<1,
- CRN_NEED_GUARD = 1<<2,
- /* XXXX not used, apparently. */
- CRN_WEIGHT_AS_EXIT = 1<<5,
- CRN_NEED_DESC = 1<<6,
- /* On clients, only provide nodes that satisfy ClientPreferIPv6OR */
- CRN_PREF_ADDR = 1<<7,
+ /* Only choose nodes if we have downloaded their descriptor or
+ * microdescriptor. */
+ CRN_NEED_DESC = 1<<2,
+ /* Choose nodes that can be used as Guard relays. */
+ CRN_NEED_GUARD = 1<<3,
/* On clients, only provide nodes that we can connect to directly, based on
- * our firewall rules */
- CRN_DIRECT_CONN = 1<<8,
- /* On clients, only provide nodes with HSRend >= 2 protocol version which
- * is required for hidden service version >= 3. */
- CRN_RENDEZVOUS_V3 = 1<<9,
+ * our firewall rules. */
+ CRN_DIRECT_CONN = 1<<4,
+ /* On clients, if choosing a node for a direct connection, only provide
+ * nodes that satisfy ClientPreferIPv6OR. */
+ CRN_PREF_ADDR = 1<<5,
+ /* On clients, only provide nodes with HSRend=2 protocol version which
+ * is required for hidden service version 3. */
+ CRN_RENDEZVOUS_V3 = 1<<6,
+ /* On clients, only provide nodes that can initiate IPv6 extends. */
+ CRN_INITIATE_IPV6_EXTEND = 1<<7,
} router_crn_flags_t;
/** Possible ways to weight routers when choosing one randomly. See