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-rw-r--r--src/feature/relay/relay_metrics.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/feature/relay/relay_metrics.h b/src/feature/relay/relay_metrics.h
index 67f58f6029..00dfeaa624 100644
--- a/src/feature/relay/relay_metrics.h
+++ b/src/feature/relay/relay_metrics.h
@@ -27,6 +27,8 @@ typedef enum {
RELAY_METRICS_NUM_DNS = 4,
/** Number of DNS query errors. */
RELAY_METRICS_NUM_DNS_ERRORS = 5,
+ /** Number of TCP exhaustion reached. */
+ RELAY_METRICS_NUM_TCP_EXHAUSTION = 6,
} relay_metrics_key_t;
/** The metadata of a relay metric. */