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While debugging, I see that the connect() call on the client succeeds but on the host machine it will just be stuck on accept (or just bypass it with EWOULDBLOCK if it was set to a non-blocking socket)
I'm not very experienced with socket programming, so I'm not sure what can cause this behavior. Also what makes it difficult to solve is that sometimes it works perfectly fine.
What are some possible reasons for this problem to occur?
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