The occasional ECONNRESET | Hacker News

Hacker News discussed why Linux TCP can return ECONNRESET when a connection is torn down after data loss.

The post cites Linux TCP code and RFC 2525 to explain why the stack may send a TCP RST instead of a FIN.

The key question was what problems the older FIN-based behavior caused when data had already been lost.

The discussion highlights how low-level TCP teardown choices can surface as surprising connection reset errors for applications, including FTP clients.