Addresses PERFORMANCE-FINDINGS #1, #4, #6 (and #2 in creategroup flow):
- Add app/telnet-pool.js: pool of N connections (config.telnet.poolSize,
default 4) with wait-queue, lazy reconnect, and respawn on dead socket.
- Remove module-level new Telnet() singleton and startup socket dump from
app/routes/index.js; switch all mutating endpoints to telnetPool.send().
- Set telnet debug:false; use config.telnet.timeout (default 5s) instead
of hardcoded 30000.
- Add telnet.poolSize to config/prosody-muc-rest.js.
- await doesMucExist in /creategroup so the existence check is no longer dead.
Part-of: <http://gitlab.vnc.biz/uxf/prosody-muc-rest/-/merge_requests/3>
macanhhuy
Stefan-Sanger