dangernoodle-io / TaipanMiner / 25981080623

90%

push

github

chore(lwip): tune socket pool for browser keepalive + SSE churn (#406)

Three coordinated changes to fix httpd_accept_conn errno 23 (ENFILE)
under realistic dashboard usage:

1. CONFIG_LWIP_MAX_SOCKETS=10 — bumped from 8. TA-301's analysis missed
   browser HTTP/1.1 keepalive (3 sockets/tab) + stratum + listener
   exceeding the old cap. ~360B extra RAM.
2. CONFIG_LWIP_TCP_FIN_WAIT_TIMEOUT=2000 — pairs with breadboard
   sse_task disconnect-detect (BB #241). Per-disconnect socket
   residency: ~25s → ~2.5s.
3. CONFIG_BB_HTTP_LWIP_RESERVE=1 — uses new BB Kconfig (BB #242).
   Default 3 over-reserves for mDNS (UDP, separate pool) and
   transient outbound; realistic non-httpd usage is 1 (stratum).
   Gives httpd 9 client slots instead of 5.

Bench-validated on .78 tdongle: rapid Diagnostics-page navigation no
longer produces errno 23 in device logs. Companion to webui lazy-load
PR.

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

2373 of 3013 branches covered (78.76%)

Branch coverage included in aggregate %.

4703 of 4874 relevant lines covered (96.49%)

169421.51 hits per line