34#define MHD_SOCKETS_H 1
48#if defined(_MSC_FULL_VER) && ! defined(_SSIZE_T_DEFINED)
50# define _SSIZE_T_DEFINED
51typedef intptr_t ssize_t;
54#if ! defined(MHD_POSIX_SOCKETS) && ! defined(MHD_WINSOCK_SOCKETS)
55# if ! defined(_WIN32) || defined(__CYGWIN__)
56# define MHD_POSIX_SOCKETS 1
58# define MHD_WINSOCK_SOCKETS 1
69#if defined(MHD_POSIX_SOCKETS)
70# ifdef HAVE_SYS_TYPES_H
71# include <sys/types.h>
73# ifdef HAVE_SYS_TIME_H
82# ifdef HAVE_SYS_SOCKET_H
83# include <sys/socket.h>
85# if defined(__VXWORKS__) || defined(__vxworks) || defined(OS_VXWORKS)
94# ifdef HAVE_NETINET_IN_H
95# include <netinet/in.h>
97# ifdef HAVE_ARPA_INET_H
98# include <arpa/inet.h>
106# ifdef HAVE_SYS_SELECT_H
107# include <sys/select.h>
110# include <sys/epoll.h>
112# ifdef HAVE_NETINET_TCP_H
114# include <netinet/tcp.h>
116#elif defined(MHD_WINSOCK_SOCKETS)
117# ifndef WIN32_LEAN_AND_MEAN
118# define WIN32_LEAN_AND_MEAN 1
120# include <winsock2.h>
121# include <ws2tcpip.h>
124#if defined(HAVE_POLL_H) && defined(HAVE_POLL)
129#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
130#include <sys/param.h>
135#ifdef _MHD_FD_SETSIZE_IS_DEFAULT
136# define _MHD_SYS_DEFAULT_FD_SETSIZE FD_SETSIZE
138# ifndef MHD_SYS_FD_SETSIZE_
140# define _MHD_SYS_DEFAULT_FD_SETSIZE get_system_fdsetsize_value ()
142# define _MHD_SYS_DEFAULT_FD_SETSIZE MHD_SYS_FD_SETSIZE_
150# define MHD_PANIC(msg) \
151 do { fprintf (stderr, \
152 "Abnormal termination at %d line in file %s: %s\n", \
153 (int) __LINE__, __FILE__, msg); abort (); \
157#ifndef MHD_SOCKET_DEFINED
161# if defined(MHD_POSIX_SOCKETS)
163# define MHD_INVALID_SOCKET (-1)
164# elif defined(MHD_WINSOCK_SOCKETS)
166# define MHD_INVALID_SOCKET (INVALID_SOCKET)
169# define MHD_SOCKET_DEFINED 1
173# define SOCK_CLOEXEC_OR_ZERO SOCK_CLOEXEC
175# define SOCK_CLOEXEC_OR_ZERO 0
178#ifdef HAVE_SOCK_NONBLOCK
179# define SOCK_NONBLOCK_OR_ZERO SOCK_NONBLOCK
181# define SOCK_NONBLOCK_OR_ZERO 0
185# define SOCK_NOSIGPIPE_OR_ZERO SOCK_NOSIGPIPE
187# define SOCK_NOSIGPIPE_OR_ZERO 0
191# define MSG_NOSIGNAL_OR_ZERO MSG_NOSIGNAL
193# define MSG_NOSIGNAL_OR_ZERO 0
196#if ! defined(SHUT_WR) && defined(SD_SEND)
197# define SHUT_WR SD_SEND
199#if ! defined(SHUT_RD) && defined(SD_RECEIVE)
200# define SHUT_RD SD_RECEIVE
202#if ! defined(SHUT_RDWR) && defined(SD_BOTH)
203# define SHUT_RDWR SD_BOTH
206#if defined(HAVE_ACCEPT4) && (defined(HAVE_SOCK_NONBLOCK) || \
207 defined(SOCK_CLOEXEC) || defined(SOCK_NOSIGPIPE))
208# define USE_ACCEPT4 1
211#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
212 defined(__OpenBSD__) || defined(__NetBSD__) || \
213 defined(MHD_WINSOCK_SOCKETS) || defined(__MACH__) || defined(__sun) || \
216#define MHD_ACCEPT_INHERIT_NONBLOCK 1
219#if defined(HAVE_EPOLL_CREATE1) && defined(EPOLL_CLOEXEC)
220# define USE_EPOLL_CREATE1 1
227#define MHD_TCP_FASTOPEN_QUEUE_SIZE_DEFAULT 10
235#define MHD_TCP_CORK_NOPUSH TCP_CORK
236#elif defined(TCP_NOPUSH)
240#define MHD_TCP_CORK_NOPUSH TCP_NOPUSH
244#ifdef MHD_TCP_CORK_NOPUSH
249#define _MHD_CORK_RESET_PUSH_DATA 1
254#define _MHD_CORK_RESET_PUSH_DATA_ALWAYS 1
256#if (defined(__FreeBSD__) && \
257 ((__FreeBSD__ + 0) >= 5 || (__FreeBSD_version + 0) >= 450000)) || \
258 (defined(__FreeBSD_kernel_version) && \
259 (__FreeBSD_kernel_version + 0) >= 450000)
265#define _MHD_CORK_RESET_PUSH_DATA 1
272#define _MHD_CORK_RESET_PUSH_DATA 1
280#define _MHD_NODELAY_SET_PUSH_DATA 1
285#define _MHD_NODELAY_SET_PUSH_DATA_ALWAYS 1
296#define MHD_USE_MSG_MORE 1
304#ifdef MHD_POSIX_SOCKETS
314#if ! defined(MHD_WINSOCK_SOCKETS)
323#if ! defined(MHD_WINSOCK_SOCKETS)
324# define MHD_SCKT_SEND_MAX_SIZE_ SSIZE_MAX
326# define MHD_SCKT_SEND_MAX_SIZE_ INT_MAX
339#if ! defined(MHD_WINSOCK_SOCKETS)
340# define MHD_socket_close_(fd) ((0 == close ((fd))) || (EBADF != errno))
342# define MHD_socket_close_(fd) (0 == closesocket ((fd)))
350#define MHD_socket_close_chk_(fd) do { \
351 if (! MHD_socket_close_ (fd)) \
352 MHD_PANIC (_ ("Close socket failed.\n")); \
364#define MHD_send4_(s,b,l,f) \
365 ((ssize_t) send ((s),(const void*) (b),(MHD_SCKT_SEND_SIZE_) (l), \
366 ((MSG_NOSIGNAL_OR_ZERO) | (f))))
376#define MHD_send_(s,b,l) MHD_send4_((s),(b),(l), 0)
386#define MHD_recv_(s,b,l) \
387 ((ssize_t) recv ((s),(void*) (b),(MHD_SCKT_SEND_SIZE_) (l), 0))
399#if defined(MHD_POSIX_SOCKETS)
400# define MHD_SCKT_FD_FITS_FDSET_SETSIZE_(fd,pset,setsize) \
401 ((fd) < ((MHD_socket) (setsize)))
402#elif defined(MHD_WINSOCK_SOCKETS)
403# define MHD_SCKT_FD_FITS_FDSET_SETSIZE_(fd,pset,setsize) \
404 ( ((void*) (pset)== (void*) 0) || \
405 (((fd_set*) (pset))->fd_count < ((unsigned) setsize)) || \
406 (FD_ISSET ((fd), (pset))) )
417#define MHD_SCKT_FD_FITS_FDSET_(fd,pset) \
418 MHD_SCKT_FD_FITS_FDSET_SETSIZE_ ((fd), (pset), FD_SETSIZE)
428#if defined(MHD_POSIX_SOCKETS)
429# define MHD_SCKT_ADD_FD_TO_FDSET_SETSIZE_(fd,pset,setsize) \
430 FD_SET ((fd), (pset))
431#elif defined(MHD_WINSOCK_SOCKETS)
432# define MHD_SCKT_ADD_FD_TO_FDSET_SETSIZE_(fd,pset,setsize) \
435 fd_set*const _s_ = (fd_set*) (pset); \
436 while ((_i_ < _s_->fd_count) && ((fd) != _s_->fd_array [_i_])) {++_i_;} \
437 if ((_i_ == _s_->fd_count)) {_s_->fd_array [_s_->fd_count ++] = (fd);} \
442#if ! defined(MHD_WINSOCK_SOCKETS)
443# define MHD_SYS_select_(n,r,w,e,t) select ((n),(r),(w),(e),(t))
445# define MHD_SYS_select_(n,r,w,e,t) \
446 ( ( (((void*) (r) == (void*) 0) || ((fd_set*) (r))->fd_count == 0) && \
447 (((void*) (w) == (void*) 0) || ((fd_set*) (w))->fd_count == 0) && \
448 (((void*) (e) == (void*) 0) || ((fd_set*) (e))->fd_count == 0) ) ? \
449 ( ((void*) (t) == (void*) 0) ? 0 : \
450 (Sleep ((DWORD)((struct timeval*) (t))->tv_sec * 1000 \
451 + (DWORD)((struct timeval*) (t))->tv_usec / 1000), 0) ) : \
452 (select ((int) 0,(r),(w),(e),(t))) )
455#if defined(HAVE_POLL)
457# if ! defined(MHD_WINSOCK_SOCKETS)
458# define MHD_sys_poll_ poll
460# define MHD_sys_poll_ WSAPoll
464# define MHD_POLLPRI_OR_ZERO POLLPRI
466# define MHD_POLLPRI_OR_ZERO 0
469# define MHD_POLLRDBAND_OR_ZERO POLLRDBAND
471# define MHD_POLLRDBAND_OR_ZERO 0
474# define MHD_POLLNVAL_OR_ZERO POLLNVAL
476# define MHD_POLLNVAL_OR_ZERO 0
481# if defined(_WIN32) && ! defined(__CYGWIN__)
482# define MHD_POLL_EVENTS_ERR_DISC POLLRDBAND
483# elif defined(__linux__)
484# define MHD_POLL_EVENTS_ERR_DISC POLLPRI
486# define MHD_POLL_EVENTS_ERR_DISC \
487 (MHD_POLLPRI_OR_ZERO | MHD_POLLRDBAND_OR_ZERO)
491# define MHD_POLL_REVENTS_ERR_DISC \
492 (MHD_POLLPRI_OR_ZERO | MHD_POLLRDBAND_OR_ZERO | MHD_POLLNVAL_OR_ZERO \
496# define MHD_POLL_REVENTS_ERRROR \
497 (MHD_POLLPRI_OR_ZERO | MHD_POLLRDBAND_OR_ZERO | MHD_POLLNVAL_OR_ZERO \
501#define MHD_SCKT_MISSING_ERR_CODE_ 31450
503#if defined(MHD_POSIX_SOCKETS)
505# define MHD_SCKT_EAGAIN_ EAGAIN
506# elif defined(EWOULDBLOCK)
507# define MHD_SCKT_EAGAIN_ EWOULDBLOCK
509# define MHD_SCKT_EAGAIN_ MHD_SCKT_MISSING_ERR_CODE_
511# if defined(EWOULDBLOCK)
512# define MHD_SCKT_EWOULDBLOCK_ EWOULDBLOCK
513# elif defined(EAGAIN)
514# define MHD_SCKT_EWOULDBLOCK_ EAGAIN
516# define MHD_SCKT_EWOULDBLOCK_ MHD_SCKT_MISSING_ERR_CODE_
519# define MHD_SCKT_EINTR_ EINTR
521# define MHD_SCKT_EINTR_ MHD_SCKT_MISSING_ERR_CODE_
524# define MHD_SCKT_ECONNRESET_ ECONNRESET
526# define MHD_SCKT_ECONNRESET_ MHD_SCKT_MISSING_ERR_CODE_
529# define MHD_SCKT_ECONNABORTED_ ECONNABORTED
531# define MHD_SCKT_ECONNABORTED_ MHD_SCKT_MISSING_ERR_CODE_
534# define MHD_SCKT_ENOTCONN_ ENOTCONN
536# define MHD_SCKT_ENOTCONN_ MHD_SCKT_MISSING_ERR_CODE_
539# define MHD_SCKT_EMFILE_ EMFILE
541# define MHD_SCKT_EMFILE_ MHD_SCKT_MISSING_ERR_CODE_
544# define MHD_SCKT_ENFILE_ ENFILE
546# define MHD_SCKT_ENFILE_ MHD_SCKT_MISSING_ERR_CODE_
549# define MHD_SCKT_ENOMEM_ ENOMEM
551# define MHD_SCKT_ENOMEM_ MHD_SCKT_MISSING_ERR_CODE_
554# define MHD_SCKT_ENOBUFS_ ENOBUFS
556# define MHD_SCKT_ENOBUFS_ MHD_SCKT_MISSING_ERR_CODE_
559# define MHD_SCKT_EBADF_ EBADF
561# define MHD_SCKT_EBADF_ MHD_SCKT_MISSING_ERR_CODE_
564# define MHD_SCKT_ENOTSOCK_ ENOTSOCK
566# define MHD_SCKT_ENOTSOCK_ MHD_SCKT_MISSING_ERR_CODE_
569# define MHD_SCKT_EINVAL_ EINVAL
571# define MHD_SCKT_EINVAL_ MHD_SCKT_MISSING_ERR_CODE_
574# define MHD_SCKT_EPIPE_ EPIPE
576# define MHD_SCKT_EPIPE_ MHD_SCKT_MISSING_ERR_CODE_
579# define MHD_SCKT_EFAUL_ EFAULT
581# define MHD_SCKT_EFAUL_ MHD_SCKT_MISSING_ERR_CODE_
584# define MHD_SCKT_ENOSYS_ ENOSYS
586# define MHD_SCKT_ENOSYS_ MHD_SCKT_MISSING_ERR_CODE_
589# define MHD_SCKT_ENOPROTOOPT_ ENOPROTOOPT
591# define MHD_SCKT_ENOPROTOOPT_ MHD_SCKT_MISSING_ERR_CODE_
594# define MHD_SCKT_ENOTSUP_ ENOTSUP
596# define MHD_SCKT_ENOTSUP_ MHD_SCKT_MISSING_ERR_CODE_
599# define MHD_SCKT_EOPNOTSUPP_ EOPNOTSUPP
601# define MHD_SCKT_EOPNOTSUPP_ MHD_SCKT_MISSING_ERR_CODE_
604# define MHD_SCKT_EACCESS_ EACCES
606# define MHD_SCKT_EACCESS_ MHD_SCKT_MISSING_ERR_CODE_
609# define MHD_SCKT_ENETDOWN_ ENETDOWN
611# define MHD_SCKT_ENETDOWN_ MHD_SCKT_MISSING_ERR_CODE_
614# define MHD_SCKT_EALREADY_ EALREADY
616# define MHD_SCKT_EALREADY_ MHD_SCKT_MISSING_ERR_CODE_
619# define MHD_SCKT_EINPROGRESS_ EINPROGRESS
621# define MHD_SCKT_EINPROGRESS_ MHD_SCKT_MISSING_ERR_CODE_
624# define MHD_SCKT_EISCONN_ EISCONN
626# define MHD_SCKT_EISCONN_ MHD_SCKT_MISSING_ERR_CODE_
628#elif defined(MHD_WINSOCK_SOCKETS)
629# define MHD_SCKT_EAGAIN_ WSAEWOULDBLOCK
630# define MHD_SCKT_EWOULDBLOCK_ WSAEWOULDBLOCK
631# define MHD_SCKT_EINTR_ WSAEINTR
632# define MHD_SCKT_ECONNRESET_ WSAECONNRESET
633# define MHD_SCKT_ECONNABORTED_ WSAECONNABORTED
634# define MHD_SCKT_ENOTCONN_ WSAENOTCONN
635# define MHD_SCKT_EMFILE_ WSAEMFILE
636# define MHD_SCKT_ENFILE_ MHD_SCKT_MISSING_ERR_CODE_
637# define MHD_SCKT_ENOMEM_ MHD_SCKT_MISSING_ERR_CODE_
638# define MHD_SCKT_ENOBUFS_ WSAENOBUFS
639# define MHD_SCKT_EBADF_ WSAEBADF
640# define MHD_SCKT_ENOTSOCK_ WSAENOTSOCK
641# define MHD_SCKT_EINVAL_ WSAEINVAL
642# define MHD_SCKT_EPIPE_ WSAESHUTDOWN
643# define MHD_SCKT_EFAUL_ WSAEFAULT
644# define MHD_SCKT_ENOSYS_ MHD_SCKT_MISSING_ERR_CODE_
645# define MHD_SCKT_ENOPROTOOPT_ WSAENOPROTOOPT
646# define MHD_SCKT_ENOTSUP_ MHD_SCKT_MISSING_ERR_CODE_
647# define MHD_SCKT_EOPNOTSUPP_ WSAEOPNOTSUPP
648# define MHD_SCKT_EACCESS_ WSAEACCES
649# define MHD_SCKT_ENETDOWN_ WSAENETDOWN
650# define MHD_SCKT_EALREADY_ WSAEALREADY
651# define MHD_SCKT_EINPROGRESS_ WSAEINPROGRESS
652# define MHD_SCKT_EISCONN_ WSAEISCONN
659#if defined(MHD_POSIX_SOCKETS)
660# define MHD_socket_get_error_() (errno)
661#elif defined(MHD_WINSOCK_SOCKETS)
662# define MHD_socket_get_error_() WSAGetLastError ()
665#ifdef MHD_WINSOCK_SOCKETS
673const char *MHD_W32_strerror_winsock_ (
int err);
678#if defined(MHD_POSIX_SOCKETS)
679# define MHD_socket_strerr_(err) strerror ((err))
680#elif defined(MHD_WINSOCK_SOCKETS)
681# define MHD_socket_strerr_(err) MHD_W32_strerror_winsock_ ((err))
686#define MHD_socket_last_strerr_() MHD_socket_strerr_ (MHD_socket_get_error_ ())
691#if defined(MHD_POSIX_SOCKETS)
692# define MHD_socket_fset_error_(err) (errno = (err))
693#elif defined(MHD_WINSOCK_SOCKETS)
694# define MHD_socket_fset_error_(err) (WSASetLastError ((err)))
705#define MHD_socket_try_set_error_(err) \
706 ( (MHD_SCKT_MISSING_ERR_CODE_ != (err)) ? \
707 (MHD_socket_fset_error_ ((err)), ! 0) : 0)
714#if defined(MHD_POSIX_SOCKETS)
716# define MHD_socket_set_error_(err) ( (MHD_SCKT_MISSING_ERR_CODE_ == (err)) ? \
717 (errno = ENOSYS) : (errno = (err)) )
718# elif defined(EOPNOTSUPP)
719# define MHD_socket_set_error_(err) ( (MHD_SCKT_MISSING_ERR_CODE_ == (err)) ? \
720 (errno = EOPNOTSUPP) : (errno = \
722# elif defined(EFAULT)
723# define MHD_socket_set_error_(err) ( (MHD_SCKT_MISSING_ERR_CODE_ == (err)) ? \
724 (errno = EFAULT) : (errno = (err)) )
725# elif defined(EINVAL)
726# define MHD_socket_set_error_(err) ( (MHD_SCKT_MISSING_ERR_CODE_ == (err)) ? \
727 (errno = EINVAL) : (errno = (err)) )
730 No suitable replacement for missing socket error code is found. Edit this file and add replacement code which is defined on system.
731# define MHD_socket_set_error_(err) (errno = (err))
733#elif defined(MHD_WINSOCK_SOCKETS)
734# define MHD_socket_set_error_(err) ( (MHD_SCKT_MISSING_ERR_CODE_ == (err)) ? \
735 (WSASetLastError ((WSAEOPNOTSUPP))) : \
736 (WSASetLastError ((err))) )
748#define MHD_SCKT_ERR_IS_(err,code) \
749 ( (MHD_SCKT_MISSING_ERR_CODE_ != (code)) && ((code) == (err)) )
760#define MHD_SCKT_LAST_ERR_IS_(code) \
761 MHD_SCKT_ERR_IS_ (MHD_socket_get_error_ (), (code))
771#define MHD_SCKT_ERR_IS_EINTR_(err) MHD_SCKT_ERR_IS_ ((err),MHD_SCKT_EINTR_)
779#if MHD_SCKT_EAGAIN_ == MHD_SCKT_EWOULDBLOCK_
780# define MHD_SCKT_ERR_IS_EAGAIN_(err) MHD_SCKT_ERR_IS_ ((err),MHD_SCKT_EAGAIN_)
782# define MHD_SCKT_ERR_IS_EAGAIN_(err) \
783 ( MHD_SCKT_ERR_IS_ ((err), MHD_SCKT_EAGAIN_) || \
784 MHD_SCKT_ERR_IS_ ((err), MHD_SCKT_EWOULDBLOCK_) )
792#define MHD_SCKT_ERR_IS_LOW_RESOURCES_(err) \
793 ( MHD_SCKT_ERR_IS_ ((err), MHD_SCKT_EMFILE_) || \
794 MHD_SCKT_ERR_IS_ ((err), MHD_SCKT_ENFILE_) || \
795 MHD_SCKT_ERR_IS_ ((err), MHD_SCKT_ENOMEM_) || \
796 MHD_SCKT_ERR_IS_ ((err), MHD_SCKT_ENOBUFS_) )
804#if defined(MHD_POSIX_SOCKETS)
805# define MHD_SCKT_ERR_IS_DISCNN_BEFORE_ACCEPT_(err) \
806 MHD_SCKT_ERR_IS_ ((err), MHD_SCKT_ECONNABORTED_)
807#elif defined(MHD_WINSOCK_SOCKETS)
808# define MHD_SCKT_ERR_IS_DISCNN_BEFORE_ACCEPT_(err) \
809 MHD_SCKT_ERR_IS_ ((err), MHD_SCKT_ECONNRESET_)
818#define MHD_SCKT_ERR_IS_REMOTE_DISCNN_(err) \
819 ( MHD_SCKT_ERR_IS_ ((err), MHD_SCKT_ECONNRESET_) || \
820 MHD_SCKT_ERR_IS_ ((err), MHD_SCKT_ECONNABORTED_) )
828#if MHD_SCKT_MISSING_ERR_CODE_ != MHD_SCKT_ENOMEM_
829# define MHD_socket_set_error_to_ENOMEM() \
830 MHD_socket_set_error_ (MHD_SCKT_ENOMEM_)
831#elif MHD_SCKT_MISSING_ERR_CODE_ != MHD_SCKT_ENOBUFS_
832# define MHD_socket_set_error_to_ENOMEM() \
833 MHD_socket_set_error_ (MHD_SCKT_ENOBUFS_)
836 No suitable replacement for ENOMEM error codes is found. Edit this file and add replacement code which is defined on system.
837# define MHD_socket_set_error_to_ENOMEM() MHD_socket_set_error_ ( \
844# define MHD_SCKT_LOCAL AF_LOCAL
845#elif defined(AF_UNIX)
846# define MHD_SCKT_LOCAL AF_UNIX
849#if defined(MHD_POSIX_SOCKETS) && defined(MHD_SCKT_LOCAL)
850# define MHD_socket_pair_(fdarr) \
851 (! socketpair (MHD_SCKT_LOCAL, SOCK_STREAM, 0, (fdarr)))
852# if defined(HAVE_SOCK_NONBLOCK)
853# define MHD_socket_pair_nblk_(fdarr) \
854 (! socketpair (MHD_SCKT_LOCAL, SOCK_STREAM | SOCK_NONBLOCK, 0, (fdarr)))
856#elif defined(MHD_WINSOCK_SOCKETS)
864int MHD_W32_socket_pair_ (SOCKET sockets_pair[2],
int non_blk);
866# define MHD_socket_pair_(fdarr) MHD_W32_socket_pair_ ((fdarr), 0)
867# define MHD_socket_pair_nblk_(fdarr) MHD_W32_socket_pair_ ((fdarr), 1)
921#if defined(SOL_SOCKET) && defined(SO_NOSIGPIPE)
922static const int _MHD_socket_int_one = 1;
929#define MHD_socket_nosignal_(sock) \
930 (! setsockopt ((sock),SOL_SOCKET,SO_NOSIGPIPE,&_MHD_socket_int_one, \
931 sizeof(_MHD_socket_int_one)))
935#if defined(MHD_socket_nosignal_) || defined(MSG_NOSIGNAL)
942#define MHD_SEND_SPIPE_SUPPRESS_POSSIBLE 1
945#if ! defined(MHD_WINSOCK_SOCKETS)
949#define MHD_SEND_SPIPE_SUPPRESS_NEEDED 1
limits values definitions
additional automatic macros for MHD_config.h
size_t MHD_SCKT_SEND_SIZE_
int MHD_socket_noninheritable_(MHD_socket sock)
int MHD_socket_nonblocking_(MHD_socket sock)
int MHD_add_to_fd_set_(MHD_socket fd, fd_set *set, MHD_socket *max_fd, int fd_setsize)
int MHD_socket_set_nodelay_(MHD_socket sock, bool on)
MHD_socket MHD_socket_create_listen_(int pf)
Helper for obtaining FD_SETSIZE system default value.