relay_debug
relay_debug(relay, "sending %s.%u to %u = %*ph\n",
relay_debug(relay, "using mempool with %d elements\n", relay->pool.min_nr);
relay_debug(relay, "%s.%u to %u action %#x:%u\n",
relay_debug(relay, "%u.%u reply %d after %u msec\n",
relay_debug(relay, "%u.%u response %*ph\n", txn->remote, txn->rid,
relay_debug(relay, "%u.%u still awaits response\n",
relay_debug(relay, "%u.%u error %#x (%pe) hint %u debug %*ph\n",
relay_debug(relay, "received %s.%u from %u = %*ph\n",