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
For example:
% make clean
% make stage
And then configure 3 FLUs:
% echo '{p_srvr, a, machi_flu1_client, "localhost", 39000, []}.' > rel/machi/etc/flu-config/a
% echo '{p_srvr, b, machi_flu1_client, "localhost", 39001, []}.' > rel/machi/etc/flu-config/b
% echo '{p_srvr, c, machi_flu1_client, "localhost", 39002, []}.' > rel/machi/etc/flu-config/c
And then configure a chain to use 2 of those 3 FLUs:
% echo '{chain_def_v1,c1,ap_mode,[{p_srvr,a,machi_flu1_client,"localhost",39000,[]},{p_srvr,b,machi_flu1_client,"localhost",39001,[]}],[],[]}.' > rel/machi/etc/chain-config/c1
... then start Machi e.g.
% ./rel/machi/bin/machi console
... you should see the following console messages scroll by (including a :
=PROGRESS REPORT==== 8-Dec-2015::22:01:44 ===
supervisor: {local,machi_flu_sup}
started: [{pid,<0.145.0>},
{name,a},
{mfargs,
{machi_flu_psup,start_link,
[a,39000,"./data/flu/a",[]]}},
{restart_type,permanent},
{shutdown,5000},
{child_type,supervisor}]
[... and also for the other two FLUs, including a bunch of progress
reports for processes that started underneath that sub-supervisor.]
22:01:44.446 [info] Running FLUs: [a,b,c]
22:01:44.446 [info] Running FLUs at epoch 0: [a,b,c]
22:01:44.532 [warning] The following FLUs are defined but are not also members of a defined chain: [c]
