(Sending a nak would be pointless.) See ticket 15515 for discussion.
@@ -157,7 +157,8 @@ rend_mid_introduce(or_circuit_t *circ, const uint8_t *request,
"Blocking multiple introductions on the same circuit. "
"Someone might be trying to attack a hidden service through "
"this relay.");
- goto err;
+ circuit_mark_for_close(TO_CIRCUIT(circ), END_CIRC_REASON_TORPROTOCOL);
+ return -1;
}
circ->already_received_introduce1 = 1;