Andrew Hutchings 3720a9496c Restore IP_SOCK_getsockopt emNET error lookup ...

Merging TranslateReturnCode into wolfSSL_LastError dropped the
IP_SOCK_getsockopt(SO_ERROR) lookup emNET integrations need to retrieve
the canonical IP_ERR_* for a failed recv/send, leaving a broken branch
that returned the raw value and mishandled the POSIX-facade convention.

Restore the historic lookup (fixing the optlen pointer-vs-int typo
along the way) and add a CI test that builds wolfSSL with
-DWOLFSSL_EMNET against a clean-room shim providing an emNET-faithful
IP_SOCK_getsockopt (SO_ERROR-then-errno fallback, since Linux does not
stash EAGAIN in SO_ERROR); recv/send fall through to glibc.

2026-04-30 18:01:16 +01:00

..

IP.h

Restore IP_SOCK_getsockopt emNET error lookup

2026-04-30 18:01:16 +01:00