Fields
- dwServiceFlags1: u32
- dwServiceFlags2: u32
- dwServiceFlags3: u32
- dwServiceFlags4: u32
- dwProviderFlags: u32
- ProviderId: GUID
- dwCatalogEntryId: u32
- ProtocolChain: WSAPROTOCOLCHAIN
- iVersion: s32
- iAddressFamily: s32
- iMaxSockAddr: s32
- iMinSockAddr: s32
- iSocketType: s32
- iProtocol: s32
- iProtocolMaxOffset: s32
- iNetworkByteOrder: s32
- iSecurityScheme: s32
- dwMessageSize: u32
- dwProviderReserved: u32
- szProtocol: [256] s16