[Bug] setsockopt SO_RCVTIMEO not working in Windows

[pdematteis]

Describe the bug

In network.c, _z_open_udp_unicast() calls setsockopt() passing a z_time_t value, while in Windows it should be DWORD type.
Fixed by using:

#ifdef WIN32
        DWORD tv = tout;
#else
        z_time_t tv;
        tv.time = tout / (uint32_t)1000;
        tv.millitm = tout % (uint32_t)1000;
#endif

To reproduce

Start either a publisher or a subscriber with no parameters in Windows without zenohd running.
The application will stuck in Opening session... and the expected timeout is not honored.

System info

Windows 11

[jean-roland]

Hello @pdematteis, thanks for notifying us, I'll investigate the issue and open a PR accordingly.