The occasional ECONNRESET

blog - git - desktop - contact The occasional ECONNRESET (part 1/2) 2026-05-05 Two services running on the same machine. One of them opens a listening TCP socket bound to localhost, the other one connects to that. They exchange data. Every now and then, the service that initiated the connection gets an ECONNRESET while reading data from the socket -- but no other errors show up in the logs, no crashes, nothing. What's going on? A reproducer in the "lab" What tcpdump sees What strace ./server see