/****************************************************************
**
**	TCPIP.H	- Portable TCP/IP header file
**
**	TCP/IP on OS/2 is an add-on and thus is not fully integrated
**	with the operating system. To ensure portability, follow
**	these rules:
**
**	  * Always call SockInit() at the beginning of your program
**	    and check that it returns TRUE.
**
**	  * Use SockSend() & SockRecv() instead of read(), write(),
**	    send(), or recv() when working with sockets.
**
**	  * Use SockClose() instead of close() with sockets.
**
**	  * Use SOCK_ERRNO when using functions that use or return
**	    sockets, such as SockSend() or accept().
**
**	  * Use HOST_ERRNO when using gethostbyname() or gethostbyaddr()
**	    functions.
**
**	  * As far as I can tell, getservbyname() and related functions
**	    never set any error variable.
**
**	  * Use SockStrError() & HostStrError() to convert SOCK_ERRNO
**	    and HOST_ERRNO to error strings.
**
**	  * In .MAK files, include $(TCPIP_MAK) & use $(TCPIPLIB)
**	    when linking applications using TCP/IP.
**
****************************************************************/

#if !defined( IN_TCPIP_H )
#define IN_TCPIP_H

#if defined( TCPIP_IBM )
#	include	<types.h>
#	if !defined( TCPIP_IBM_NOHIDE )
#		define send		Use_SockSend
#		define recv		Use_SockRecv
#	endif
#endif

#include	<sys/types.h>
#include	<sys/stat.h>
#include	<sys/socket.h>
#include	<sys/ioctl.h>
#include	<netinet/in.h>
#include	<netdb.h>
#include	<errno.h>

#if defined( TCPIP_IBM )
#	define	BSD_SELECT
#	include	<sys/select.h>
#	include	<sys/time.h>
#	include <nerrno.h>
#	include <utils.h>
#	if defined( MICROSOFT )
#		define	SOCK_ERRNO		(tcperrno())
#	else
#		define	SOCK_ERRNO		(sock_errno())
#	endif
#	define	HOST_ERRNO		(h_errno)
#	define	SockClose(S)	soclose(S)
#	define	SockInit()		(!sock_init())
#	define	SockSend		IbmSockSend
#	define	SockRecv		IbmSockRecv
const char
   *HostStrError( int HostErrno ),
   *SockStrError( int SockErrno );

int IbmSockSend( int Socket, const void *Data, int Len, int Flags ),
    IbmSockRecv( int Socket,       void *Data, int Len, int Flags );

#if !defined( h_errno )
extern int h_errno;    /* IBM forgot to declare this in current header files */
#endif

#elif defined( __unix )
#	if defined( sgi ) /* SGI incorrectly defines FD_ZERO in sys/select.h */
#		include <bstring.h>
#	endif
#	if defined( sunos )
extern int select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
#	else
#		include <sys/select.h>
#	endif
#	include <sys/time.h>
#	include <errno.h>
#	include <arpa/inet.h>
#	define	SOCK_ERRNO		errno
#	define	HOST_ERRNO		h_errno
#	define	SockClose(S)	close(S)
#	define	SockInit()		TRUE
#	define	SockSend		send
#	define	SockRecv		recv
#	define	SockStrError(E) strerror(E)
const char
		*HostStrError( int HostErrno );

#else
#	error Undefined version of TCP/IP specified

#endif

#endif