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#ifdef _MSDOS
#include <winsock.h>
/* Some of our own infrastructure where the WinSock stuff was too hairy
to dump into a clean Unix program... */
#define SOCKET_INITIALIZE() win_socket_initialize()
#define SOCKET_CLEANUP() WSACleanup()
#define SOCKET_ERRNO (WSAGetLastError())
#define SOCKET_SET_ERRNO(x) (WSASetLastError (x))
#define SOCKET_NFDS(f) (0) /* select()'s first arg is ignored */
#define SOCKET_READ(fd, b, l) (recv(fd, b, l, 0))
#define SOCKET_WRITE(fd, b, l) (send(fd, b, l, 0))
#define SOCKET_EINTR WSAEINTR
int win_socket_initialize();
#else /* not _MSDOS */
/* If this source file requires it, define struct sockaddr_in
(and possibly other things related to network I/O). */
#ifdef HAVE_MACSOCK_H /* Sockets stuff differs on Mac */
#include "macsock.h" /* Macintosh sockets emulation library */
/* Some of our own infrastructure where the WinSock stuff was too hairy
to dump into a clean Unix program... */
#define SOCKET_INITIALIZE() (WSAStartup(0x0101, (WSADATA *)0))
#define SOCKET_CLEANUP() (WSACleanup())
#define SOCKET_ERRNO (WSAGetLastError())
#define SOCKET_SET_ERRNO(x) (WSASetLastError(x))
#define SOCKET_NFDS(f) (0) /* select()'s first arg is ignored */
#define SOCKET_READ(fd, b, l) (recv(fd, b, l, 0))
#define SOCKET_WRITE(fd, b, l) (send(fd, b, l, 0))
#define SOCKET_EINTR WSAEINTR
#else /* ! HAVE_MACSOCK_H */ /* Sockets stuff for Unix machines */
#include <netinet/in.h> /* For struct sockaddr_in and in_addr */
#include <arpa/inet.h> /* For inet_ntoa */
#include <netdb.h> /* For struct hostent, gethostbyname, etc */
#include <sys/param.h> /* For MAXHOSTNAMELEN */
#include <sys/socket.h> /* For SOCK_*, AF_*, etc */
#include <sys/time.h> /* For struct timeval */
#include <net/if.h> /* For struct ifconf, for localaddr.c */
/*
* Compatability with WinSock calls on MS-Windows...
*/
#define SOCKET unsigned int
#define INVALID_SOCKET ((SOCKET)~0)
#define closesocket close
#define ioctlsocket ioctl
#define SOCKET_ERROR (-1)
/* Some of our own infrastructure where the WinSock stuff was too hairy
to dump into a clean Unix program... */
#define SOCKET_INITIALIZE() (0) /* No error (or anything else) */
#define SOCKET_CLEANUP() /* nothing */
#define SOCKET_ERRNO errno
#define SOCKET_SET_ERRNO(x) (errno = (x))
#define SOCKET_NFDS(f) ((f)+1) /* select() arg for a single fd */
#define SOCKET_READ read
#define SOCKET_WRITE write
#define SOCKET_EINTR EINTR
#endif /* HAVE_MACSOCK_H */
#endif /* _MSDOS */
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