Change #270931

Comments

servers: minor socket error handling fixes
- sws: fix socket error code in `select()` failure message.
  Spotted by Copilot
  Bug: https://github.com/curl/curl/pull/21998#discussion_r3409469444
- sws: do not call `SOCKERRNO` twice on error.
- dnsd: do not call `SOCKERRNO` twice on error.
- dnsd: replace `goto` with `while()` to sync with rest of code.
- dnsd: `sendto()` fail message fixes:
  - replace `int` cast with `%zu` mask.
  - drop redundant newline.
  - show socket error string like rest of code.
  - report not-fully-sent error separately from socket errors.

Closes #22007

Changed files

• tests/server/dnsd.c
• tests/server/sws.c