Thanks for this. > See `TCP_KEEPCNT` and friends Yeah, 3 options with manually tuning even the number of probes. And this is for one OS only. This is one reas

Thanks for this. > See `TCP_KEEPCNT` and friends Yeah, 3 options with manually tuning even the number of probes. And this is for one OS only. This is one reason why application level pinging is just more feasible. I am using Go and gave up on tcp keepalives (even though they do have an std api) because the resulting behavior was a mess. I don’t know if it should be the job of stdlibs or the OS, but at application level I’d prefer something like a single keepalive param with reasonable behavior.