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Log what fraction of EXTEND cells have died for being non-early

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This commit is contained in:
Nick Mathewson 2011-11-21 17:51:46 -05:00
parent 0187bd8728
commit 847541ce5d
1 changed files with 9 additions and 1 deletions
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10
src/or/relay.c
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@ -1188,7 +1188,9 @@ connection_edge_process_relay_cell(cell_t *cell, circuit_t *circ,
connection_mark_and_flush(TO_CONN(conn));
}
return 0;
case RELAY_COMMAND_EXTEND:
case RELAY_COMMAND_EXTEND: {
static uint64_t total_n_extend=0, total_nonearly=0;
total_n_extend++;
if (conn) {
log_fn(LOG_PROTOCOL_WARN, domain,
"'extend' cell received for non-zero stream. Dropping.");
@ -1200,10 +1202,15 @@ connection_edge_process_relay_cell(cell_t *cell, circuit_t *circ,
RATELIM_INIT(EARLY_WARNING_INTERVAL);
char *m;
if (cell->command == CELL_RELAY) {
++total_nonearly;
if ((m = rate_limit_log(&early_warning_limit, approx_time()))) {
/* XXXX make this a protocol_warn once we're happier with it*/
double percentage = ((double)total_nonearly)/total_n_extend;
percentage *= 100;
log_fn(LOG_WARN, domain, "EXTEND cell received, "
"but not via RELAY_EARLY. Dropping.%s", m);
log_fn(LOG_WARN, domain, " (We have dropped %.02f%% of all "
"EXTEND cells for this reason)", percentage);
tor_free(m);
}
} else {
@ -1214,6 +1221,7 @@ connection_edge_process_relay_cell(cell_t *cell, circuit_t *circ,
return 0;
}
return circuit_extend(cell, circ);
}
case RELAY_COMMAND_EXTENDED:
if (!layer_hint) {
log_fn(LOG_PROTOCOL_WARN, LD_PROTOCOL,