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Diffstat (limited to 'src/or/dirvote.c')
-rw-r--r--src/or/dirvote.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/src/or/dirvote.c b/src/or/dirvote.c
index 67f0ba8cc7..f606b07f7a 100644
--- a/src/or/dirvote.c
+++ b/src/or/dirvote.c
@@ -1563,6 +1563,7 @@ networkstatus_compute_consensus(smartlist_t *votes,
smartlist_t *matching_descs = smartlist_new();
smartlist_t *chosen_flags = smartlist_new();
smartlist_t *versions = smartlist_new();
+ smartlist_t *protocols = smartlist_new();
smartlist_t *exitsummaries = smartlist_new();
uint32_t *bandwidths_kb = tor_calloc(smartlist_len(votes),
sizeof(uint32_t));
@@ -1705,6 +1706,7 @@ networkstatus_compute_consensus(smartlist_t *votes,
routerstatus_t rs_out;
const char *current_rsa_id = NULL;
const char *chosen_version;
+ const char *chosen_protocol_list;
const char *chosen_name = NULL;
int exitsummary_disagreement = 0;
int is_named = 0, is_unnamed = 0, is_running = 0;
@@ -1718,6 +1720,7 @@ networkstatus_compute_consensus(smartlist_t *votes,
smartlist_clear(matching_descs);
smartlist_clear(chosen_flags);
smartlist_clear(versions);
+ smartlist_clear(protocols);
num_bandwidths = 0;
num_mbws = 0;
num_guardfraction_inputs = 0;
@@ -1737,6 +1740,12 @@ networkstatus_compute_consensus(smartlist_t *votes,
if (rs->version && rs->version[0])
smartlist_add(versions, rs->version);
+ if (rs->protocols) {
+ /* We include this one even if it's empty: voting for an
+ * empty protocol list actually is meaningful. */
+ smartlist_add(protocols, rs->protocols);
+ }
+
/* Tally up all the flags. */
for (int flag = 0; flag < n_voter_flags[voter_idx]; ++flag) {
if (rs->flags & (U64_LITERAL(1) << flag))
@@ -1875,6 +1884,14 @@ networkstatus_compute_consensus(smartlist_t *votes,
chosen_version = NULL;
}
+ /* Pick the protocol list */
+ if (smartlist_len(protocols)) {
+ smartlist_sort_strings(protocols);
+ chosen_protocol_list = get_most_frequent_member(protocols);
+ } else {
+ chosen_protocol_list = NULL;
+ }
+
/* If it's a guard and we have enough guardfraction votes,
calculate its consensus guardfraction value. */
if (is_guard && num_guardfraction_inputs > 2 &&
@@ -2028,6 +2045,10 @@ networkstatus_compute_consensus(smartlist_t *votes,
smartlist_add(chunks, tor_strdup(chosen_version));
}
smartlist_add(chunks, tor_strdup("\n"));
+ if (chosen_protocol_list &&
+ consensus_method >= MIN_METHOD_FOR_RS_PROTOCOLS) {
+ smartlist_add_asprintf(chunks, "proto %s\n", chosen_protocol_list);
+ }
/* Now the weight line. */
if (rs_out.has_bandwidth) {
char *guardfraction_str = NULL;
@@ -2068,6 +2089,7 @@ networkstatus_compute_consensus(smartlist_t *votes,
smartlist_free(matching_descs);
smartlist_free(chosen_flags);
smartlist_free(versions);
+ smartlist_free(protocols);
smartlist_free(exitsummaries);
tor_free(bandwidths_kb);
tor_free(measured_bws_kb);