/***********************************************************************\
*                               mswsock.d                               *
*                                                                       *
*                       Windows API header module                       *
*                                                                       *
*                 Translated from MinGW Windows headers                 *
*                             by Daniel Keep                            *
*                                                                       *
*                       Placed into public domain                       *
\***********************************************************************/
module win32.mswsock;

import win32.winbase, win32.windef;
private import win32.basetyps, win32.w32api;

// FIXME: clean up Windows version support

version (Win32_Winsock2) pragma(msg,
 "Version Win32_Winsock2 is deprecated; Winsock2 is now imported by default");

// Pull in Winsock1 if the user has put "Win32_Winsock1" on the compile
// line; otherwise, default to Winsock2.
version (Win32_Winsock1) {
	import win32.winsock;
} else {
	import win32.winsock2;
}

static if (_WIN32_WINNT_ONLY) {
	static if (_WIN32_WINNT >= 0x500) {
		enum {
			/* WinNT5+:
			   ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/socket_options.htm */
			SO_MAXDG             = 0x7009,
			SO_MAXPATHDG         = 0x700A,
		}
	}

	enum {
		/* WinNT4+:
		   ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/socket_options_for_windows_nt_4_0_2.htm */
		SO_CONNDATA              = 0x7000,
		SO_CONNOPT               = 0x7001,
		SO_DISCDATA              = 0x7002,
		SO_DISCOPT               = 0x7003,
		SO_CONNDATALEN           = 0x7004,
		SO_CONNOPTLEN            = 0x7005,
		SO_DISCDATALEN           = 0x7006,
		SO_DISCOPTLEN            = 0x7007,

		/* WinNT4:
		   ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/socket_options.htm */
		SO_UPDATE_ACCEPT_CONTENT = 0x700B,
	}
}

enum {
	/* Win95+, WinNT4+ but apparently shouldn't used: mark as deprecated?
	   ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/socket_options.htm */
	SO_OPENTYPE                  = 0x7008,

	/* Win95+; these two are passed to the SO_OPENTYPE option as arguments,
	   so would they be deprecated as well?
	   ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/socket_options.htm */
	SO_SYNCHRONOUS_ALERT         = 0x0010,
	SO_SYNCHRONOUS_NONALERT      = 0x0020,

	/* Win95:
	   ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/socket_options.htm */
	SO_CONNECT_TIME              = 0x700C,
}


static if (_WIN32_WINNT_ONLY) {
	enum {
		TCP_BSDURGENT = 0x7000,
	}

	/* These *appear* to be constants for passing to the TransmitFile /
	   TransmitPackets functions, which are available in WinNT3.51+
	   ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/transmitfile_2.htm */
	enum {
		TF_DISCONNECT         = 1,
		TF_REUSE_SOCKET       = 2,
		TF_WRITE_BEHIND       = 4,
		TF_USE_DEFAULT_WORKER = 0,
		TF_USE_SYSTEM_THREAD  = 16,
		TF_USE_KERNEL_APC     = 32
	}
}

/* Win95+, WinNT3.51+
   ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/transmit_file_buffers_2.htm */
struct TRANSMIT_FILE_BUFFERS {
	PVOID Head;
	DWORD HeadLength;
	PVOID Tail;
	DWORD TailLength;
}
alias TRANSMIT_FILE_BUFFERS* PTRANSMIT_FILE_BUFFERS, LPTRANSMIT_FILE_BUFFERS;

extern(Windows) {
	/* Win95+, WinNT3.51+
	   ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/wsarecvex_2.htm */
	int WSARecvEx(SOCKET, char*, int, int*);

	/* Win95+, WinNT3.51+
	   ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/getacceptexSOCKADDRs_2.htm */
	VOID GetAcceptExSockaddrs(PVOID, DWORD, DWORD, DWORD, SOCKADDR**, LPINT, SOCKADDR**, LPINT);

	static if (_WIN32_WINNT_ONLY) {
		/* WinNT3.51+
		   ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/transmitfile_2.htm */
		BOOL TransmitFile(SOCKET, HANDLE, DWORD, DWORD, LPOVERLAPPED, LPTRANSMIT_FILE_BUFFERS, DWORD);

		/* WinNT3.51+
		   ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/acceptex_2.htm */
		alias BOOL function(SOCKET, SOCKET, PVOID, DWORD, DWORD, DWORD, LPDWORD, LPOVERLAPPED) LPFN_ACCEPTEX;
        const GUID WSAID_ACCEPTEX = {0xb5367df1,0xcbac,0x11cf,[0x95,0xca,0x00,0x80,0x5f,0x48,0xa1,0x92]};

        alias BOOL function(SOCKET, SOCKADDR*, int, PVOID, DWORD, LPDWORD, LPOVERLAPPED) LPFN_CONNECTEX;
        const GUID WSAID_CONNECTEX = {0x25a207b9,0xddf3,0x4660,[0x8e,0xe9,0x76,0xe5,0x8c,0x74,0x06,0x3e]};
	}
}

version(Win32_Winsock1) {
} else {
	static if (WINVER > 0x501) {
		/*	These appear to be constants for the TRANSMIT_PACKETS_ELEMENT
		 *	structure below, so I've given them the same minimum version
		 */
		enum {
			TP_ELEMENT_FILE   = 1,
			TP_ELEMENT_MEMORY = 2,
			TP_ELEMENT_EOP    = 4
		}

		/*	WinXP+, Srv2k3+
		 *	ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/transmit_packets_element_2.htm
		 */
		struct TRANSMIT_PACKETS_ELEMENT {
			ULONG dwElFlags;
			ULONG cLength;
			union {
				struct {
					LARGE_INTEGER nFileOffset;
					HANDLE        hFile;
				}
				PVOID pBuffer;
			}
		}

		/*	WinXP+, Server2003+:
		 *	ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/wsamsg_2.htm
		 */
		struct WSAMSG {
			LPSOCKADDR name;
			INT        namelen;
			LPWSABUF   lpBuffers;
			DWORD      dwBufferCount;
			WSABUF     Control;
			DWORD      dwFlags;
		}

		alias WSAMSG* PWSAMSG, LPWSAMSG;

		/* According to MSDN docs, the WSAMSG.Control buffer starts with a
		   cmsghdr header of the following form.  See also RFC 2292. */
		/* DK: Confirmed.  So I suppose these should get the same version as
		   WSAMSG... */
		struct WSACMSGHDR {
			UINT cmsg_len;
			INT  cmsg_level;
			INT  cmsg_type;
			// followed by UCHAR cmsg_data[];
		}

		/* TODO: Standard Posix.1g macros as per RFC 2292, with WSA_uglification. */
		/* DK: MinGW doesn't define these, and neither does the MSDN docs.  Might have
		   to actually look up RFC 2292... */
		/+
		#if 0
		#define WSA_CMSG_FIRSTHDR(mhdr)
		#define WSA_CMSG_NXTHDR(mhdr, cmsg)
		#define WSA_CMSG_SPACE(length)
		#define WSA_CMSG_LEN(length)
		#endif
		+/

		extern(Windows)
		{
			/*	WinXP+, Srv2k3+
			 *	ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/disconnectex_2.htm
			 */
			BOOL DisconnectEx(SOCKET, LPOVERLAPPED, DWORD, DWORD);

			/*	WinXP+, Srv2k3+
			 *	ms-help://MS.MSDNQTR.2003FEB.1033/winsock/winsock/wsarecvmsg_2.htm
			 */
			int WSARecvMsg(SOCKET, LPWSAMSG, LPDWORD, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE);
		}
	}
}
