Based on the senior's feedback, here are the proper function pointer type definitions per the Windows API docs while maintaining POSIX compatibility:
// Network byte order conversions
uint32_t (*)(uint32_t) for htonl/ntohl
uint16_t (*)(uint16_t) for htons/ntohs
// IP address conversions
unsigned long (*)(const char*) for inet_addr
char* (*)(struct in_addr) for inet_ntoa
const char* (*)(int, const void*, char*, size_t) for inet_ntop (InetNtopA)
int (*)(int, const char*, void*) for inet_pton (InetPtonA)
The key points:
- We maintain POSIX types in our public interface
- Function pointer types match Windows API signatures
- No Windows-specific types or headers are used
- For inet_ntop/pton we use InetNtopA/InetPtonA from ws2tcpip.h