When there is TCP_WAIT connection whose local part has
port to be listened, listen (bind) will fail by eaddrinuse
_on Linux_ (won't on Mac OS X).
This commit also adds some logs and pattern matches.
Reference
- Ephemeral port - Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Ephemeral_port
"Many Linux kernels use the port range 32768 to 61000.[note 2]
FreeBSD has used the IANA port range since release 4.6. Previous
versions, including the Berkeley Software Distribution (BSD), use
ports 1024 to 5000 as ephemeral ports.[2]"
- Demostration of collision between already-closed ephemeral port
and listen port on Linux (Mac OS X allows)
https://gist.github.com/shino/36ae1e01608366d52236
2e2d282afc