Oh, I found a beautiful memory leak in nostr-tools!
Fixed on my branch, let's try this!
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Subscribing to events looks fine.
Leaks appeared only on publish events, that's why it could take many hours before crash
So... if you are connected to either nproxy.zerologin.co or nproxy.cc, just publish things to stress test the proxy!
(nproxy.cc should be better)