pub const WSAPROTOCOL_INFOA = extern struct {
    dwServiceFlags1: DWORD,
    dwServiceFlags2: DWORD,
    dwServiceFlags3: DWORD,
    dwServiceFlags4: DWORD,
    dwProviderFlags: DWORD,
    ProviderId: GUID,
    dwCatalogEntryId: DWORD,
    ProtocolChain: WSAPROTOCOLCHAIN,
    iVersion: c_int,
    iAddressFamily: c_int,
    iMaxSockAddr: c_int,
    iMinSockAddr: c_int,
    iSocketType: c_int,
    iProtocol: c_int,
    iProtocolMaxOffset: c_int,
    iNetworkByteOrder: c_int,
    iSecurityScheme: c_int,
    dwMessageSize: DWORD,
    dwProviderReserved: DWORD,
    szProtocol: [WSAPROTOCOL_LEN + 1]CHAR,
}