2 This file is part of GNUnet.
3 (C) 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file util/network.c
23 * @brief basic, low-level networking interface
28 #include "gnunet_disk_lib.h"
30 #include "gnunet_container_lib.h"
32 #define DEBUG_NETWORK GNUNET_NO
34 #ifndef INVALID_SOCKET
35 #define INVALID_SOCKET -1
39 struct GNUNET_NETWORK_Handle
49 struct GNUNET_NETWORK_FDSet
53 * Maximum number of any socket socket descriptor in the set
58 * Bitset with the descriptors.
64 * Linked list of handles
66 struct GNUNET_CONTAINER_SList *handles;
72 #define FD_COPY(s, d) (memcpy ((d), (s), sizeof (fd_set)))
77 * Set if a socket should use blocking or non-blocking IO.
79 * @param doBlock blocking mode
80 * @return GNUNET_OK on success, GNUNET_SYSERR on error
83 socket_set_blocking (struct GNUNET_NETWORK_Handle *fd, int doBlock)
89 if (ioctlsocket (fd->fd, FIONBIO, &mode) == SOCKET_ERROR)
92 SetErrnoFromWinsockError (WSAGetLastError ());
93 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "ioctlsocket");
100 int flags = fcntl (fd->fd, F_GETFL);
104 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "fcntl");
105 return GNUNET_SYSERR;
108 flags &= ~O_NONBLOCK;
112 if (0 != fcntl (fd->fd, F_SETFL, flags))
115 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "fcntl");
116 return GNUNET_SYSERR;
125 * Make a socket non-inheritable to child processes
127 * @param h the socket to make non-inheritable
128 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
129 * @warning Not implemented on Windows
132 socket_set_inheritable (const struct GNUNET_NETWORK_Handle *h)
135 i = fcntl (h->fd, F_GETFD);
136 if (i == (i | FD_CLOEXEC))
138 return (fcntl (h->fd, F_SETFD, i | FD_CLOEXEC) == 0)
139 ? GNUNET_OK : GNUNET_SYSERR;
146 * The MSG_NOSIGNAL equivalent on Mac OS X
148 * @param h the socket to make non-delaying
151 socket_set_nosigpipe (const struct GNUNET_NETWORK_Handle *h)
155 setsockopt (h->fd, SOL_SOCKET, SO_NOSIGPIPE, &value, sizeof (value)))
156 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "setsockopt");
162 * Disable delays when sending data via the socket.
163 * (GNUnet makes sure that messages are as big as
166 * @param h the socket to make non-delaying
169 socket_set_nodelay (const struct GNUNET_NETWORK_Handle *h)
173 setsockopt (h->fd, IPPROTO_TCP, TCP_NODELAY, &value, sizeof (value)))
174 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "setsockopt");
179 * accept a new connection on a socket
181 * @param desc bound socket
182 * @param address address of the connecting peer, may be NULL
183 * @param address_len length of address
184 * @return client socket
186 struct GNUNET_NETWORK_Handle *
187 GNUNET_NETWORK_socket_accept (const struct GNUNET_NETWORK_Handle *desc,
188 struct sockaddr *address,
189 socklen_t * address_len)
191 struct GNUNET_NETWORK_Handle *ret;
192 ret = GNUNET_malloc (sizeof (struct GNUNET_NETWORK_Handle));
193 ret->fd = accept (desc->fd, address, address_len);
194 if (ret->fd == INVALID_SOCKET)
197 SetErrnoFromWinsockError (WSAGetLastError ());
203 if (ret->fd >= FD_SETSIZE)
205 GNUNET_break (0 == close (ret->fd));
211 if (GNUNET_SYSERR == socket_set_blocking (ret, GNUNET_NO))
215 /* we might want to treat this one as fatal... */
217 GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (ret));
222 if (GNUNET_OK != socket_set_inheritable (ret))
223 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
224 "socket_set_inheritable");
227 socket_set_nosigpipe (ret);
230 if (address->sa_family != AF_UNIX)
232 socket_set_nodelay (ret);
238 * Bind to a connected socket
240 * @param address address to be bound
241 * @param address_len length of address
242 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
245 GNUNET_NETWORK_socket_bind (struct GNUNET_NETWORK_Handle *desc,
246 const struct sockaddr *address,
247 socklen_t address_len)
251 ret = bind (desc->fd, address, address_len);
253 if (SOCKET_ERROR == ret)
254 SetErrnoFromWinsockError (WSAGetLastError ());
256 return ret == 0 ? GNUNET_OK : GNUNET_SYSERR;
263 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
266 GNUNET_NETWORK_socket_close (struct GNUNET_NETWORK_Handle *desc)
271 ret = closesocket (desc->fd);
272 SetErrnoFromWinsockError (WSAGetLastError ());
274 ret = close (desc->fd);
277 return (ret == 0) ? GNUNET_OK : GNUNET_SYSERR;
284 * @param address peer address
285 * @param address_len length of address
286 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
289 GNUNET_NETWORK_socket_connect (const struct GNUNET_NETWORK_Handle *desc,
290 const struct sockaddr *address,
291 socklen_t address_len)
294 ret = connect (desc->fd, address, address_len);
297 if (SOCKET_ERROR == ret)
300 SetErrnoFromWinsockError (WSAGetLastError ());
301 if (errno == EWOULDBLOCK)
305 return ret == 0 ? GNUNET_OK : GNUNET_SYSERR;
313 * @param level protocol level of the option
314 * @param optname identifier of the option
315 * @param optval options
316 * @param optlen length of optval
317 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
320 GNUNET_NETWORK_socket_getsockopt (const struct GNUNET_NETWORK_Handle *desc,
321 int level, int optname, void *optval,
325 ret = getsockopt (desc->fd, level, optname, optval, optlen);
328 if (ret == 0 && level == SOL_SOCKET && optname == SO_ERROR)
329 *((int *) optval) = GetErrnoFromWinsockError (*((int *) optval));
331 else if (SOCKET_ERROR == ret)
332 SetErrnoFromWinsockError (WSAGetLastError ());
335 return ret == 0 ? GNUNET_OK : GNUNET_SYSERR;
342 * @param backlog length of the listen queue
343 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
346 GNUNET_NETWORK_socket_listen (const struct GNUNET_NETWORK_Handle *desc,
350 ret = listen (desc->fd, backlog);
353 if (SOCKET_ERROR == ret)
354 SetErrnoFromWinsockError (WSAGetLastError ());
357 return ret == 0 ? GNUNET_OK : GNUNET_SYSERR;
362 * How much data is available to be read on this descriptor?
364 * Returns GNUNET_NO if no data is available, or on error!
368 GNUNET_NETWORK_socket_recvfrom_amount (const struct GNUNET_NETWORK_Handle
374 /* How much is there to be read? */
376 error = ioctl (desc->fd, FIONREAD, &pending);
379 error = ioctlsocket (desc->fd, FIONREAD, &pending);
380 if (error != SOCKET_ERROR)
388 * Read data from a connected socket (always non-blocking).
390 * @param buffer buffer
391 * @param length length of buffer
392 * @param src_addr either the source to recv from, or all zeroes
393 * to be filled in by recvfrom
394 * @param addrlen length of the addr
397 GNUNET_NETWORK_socket_recvfrom (const struct GNUNET_NETWORK_Handle * desc,
398 void *buffer, size_t length,
399 struct sockaddr * src_addr,
407 flags |= MSG_DONTWAIT;
410 ret = recvfrom (desc->fd, buffer, length, flags, src_addr, addrlen);
412 if (SOCKET_ERROR == ret)
413 SetErrnoFromWinsockError (WSAGetLastError ());
420 * Read data from a connected socket (always non-blocking).
422 * @param buffer buffer
423 * @param length length of buffer
426 GNUNET_NETWORK_socket_recv (const struct GNUNET_NETWORK_Handle * desc,
427 void *buffer, size_t length)
434 flags |= MSG_DONTWAIT;
436 ret = recv (desc->fd, buffer, length, flags);
438 if (SOCKET_ERROR == ret)
439 SetErrnoFromWinsockError (WSAGetLastError ());
446 * Send data (always non-blocking).
449 * @param buffer data to send
450 * @param length size of the buffer
451 * @return number of bytes sent, GNUNET_SYSERR on error
454 GNUNET_NETWORK_socket_send (const struct GNUNET_NETWORK_Handle * desc,
455 const void *buffer, size_t length)
462 flags |= MSG_DONTWAIT;
466 flags |= MSG_NOSIGNAL;
469 ret = send (desc->fd, buffer, length, flags);
472 if (SOCKET_ERROR == ret)
473 SetErrnoFromWinsockError (WSAGetLastError ());
481 * Send data to a particular destination (always non-blocking).
482 * This function only works for UDP sockets.
485 * @param message data to send
486 * @param length size of the data
487 * @param dest_addr destination address
488 * @param dest_len length of address
489 * @return number of bytes sent, GNUNET_SYSERR on error
492 GNUNET_NETWORK_socket_sendto (const struct GNUNET_NETWORK_Handle * desc,
493 const void *message, size_t length,
494 const struct sockaddr * dest_addr,
502 flags |= MSG_DONTWAIT;
505 flags |= MSG_NOSIGNAL;
507 ret = sendto (desc->fd, message, length, flags, dest_addr, dest_len);
509 if (SOCKET_ERROR == ret)
510 SetErrnoFromWinsockError (WSAGetLastError ());
519 * @param level protocol level of the option
520 * @param option_name option identifier
521 * @param option_value value to set
522 * @param option_len size of option_value
523 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
526 GNUNET_NETWORK_socket_setsockopt (struct GNUNET_NETWORK_Handle *fd,
527 int level, int option_name,
528 const void *option_value,
529 socklen_t option_len)
533 ret = setsockopt (fd->fd, level, option_name, option_value, option_len);
535 if (SOCKET_ERROR == ret)
536 SetErrnoFromWinsockError (WSAGetLastError ());
538 return ret == 0 ? GNUNET_OK : GNUNET_SYSERR;
543 * Create a new socket. Configure it for non-blocking IO and
544 * mark it as non-inheritable to child processes (set the
545 * close-on-exec flag).
547 * @param domain domain of the socket
548 * @param type socket type
549 * @param protocol network protocol
550 * @return new socket, NULL on error
552 struct GNUNET_NETWORK_Handle *
553 GNUNET_NETWORK_socket_create (int domain, int type, int protocol)
555 struct GNUNET_NETWORK_Handle *ret;
556 ret = GNUNET_malloc (sizeof (struct GNUNET_NETWORK_Handle));
557 ret->fd = socket (domain, type, protocol);
558 if (INVALID_SOCKET == ret->fd)
561 SetErrnoFromWinsockError (WSAGetLastError ());
568 if (ret->fd >= FD_SETSIZE)
570 GNUNET_break (0 == close (ret->fd));
577 if (GNUNET_SYSERR == socket_set_blocking (ret, GNUNET_NO))
579 /* we might want to treat this one as fatal... */
581 GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (ret));
586 if (GNUNET_OK != socket_set_inheritable (ret))
587 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
588 "socket_set_inheritable");
591 socket_set_nosigpipe (ret);
593 if ( (type == SOCK_STREAM)
595 && (domain != AF_UNIX)
598 socket_set_nodelay (ret);
604 * Shut down socket operations
606 * @param how type of shutdown
607 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
610 GNUNET_NETWORK_socket_shutdown (struct GNUNET_NETWORK_Handle *desc, int how)
614 ret = shutdown (desc->fd, how);
617 SetErrnoFromWinsockError (WSAGetLastError ());
619 return ret == 0 ? GNUNET_OK : GNUNET_SYSERR;
628 GNUNET_NETWORK_fdset_zero (struct GNUNET_NETWORK_FDSet *fds)
633 GNUNET_CONTAINER_slist_clear (fds->handles);
638 * Add a socket to the FD set
640 * @param desc socket to add
643 GNUNET_NETWORK_fdset_set (struct GNUNET_NETWORK_FDSet *fds,
644 const struct GNUNET_NETWORK_Handle *desc)
646 FD_SET (desc->fd, &fds->sds);
647 if (desc->fd + 1 > fds->nsds)
648 fds->nsds = desc->fd + 1;
653 * Check whether a socket is part of the fd set
656 * @return 0 if the FD is not set
659 GNUNET_NETWORK_fdset_isset (const struct GNUNET_NETWORK_FDSet *fds,
660 const struct GNUNET_NETWORK_Handle *desc)
662 return FD_ISSET (desc->fd, &fds->sds);
667 * Add one fd set to another
668 * @param dst the fd set to add to
669 * @param src the fd set to add from
672 GNUNET_NETWORK_fdset_add (struct GNUNET_NETWORK_FDSet *dst,
673 const struct GNUNET_NETWORK_FDSet *src)
676 for (nfds = src->nsds; nfds > 0; nfds--)
677 if (FD_ISSET (nfds, &src->sds))
680 FD_SET (nfds, &dst->sds);
681 if (nfds + 1 > dst->nsds)
682 dst->nsds = nfds + 1;
685 GNUNET_CONTAINER_slist_append (dst->handles, src->handles);
691 * Copy one fd set to another
693 * @param to destination
697 GNUNET_NETWORK_fdset_copy (struct GNUNET_NETWORK_FDSet *to,
698 const struct GNUNET_NETWORK_FDSet *from)
700 FD_COPY (&from->sds, &to->sds);
701 to->nsds = from->nsds;
704 GNUNET_CONTAINER_slist_clear (to->handles);
705 GNUNET_CONTAINER_slist_append (to->handles, from->handles);
710 GNUNET_NETWORK_get_fd (struct GNUNET_NETWORK_Handle *desc)
716 * Copy a native fd set
718 * @param to destination
719 * @param from native source set
720 * @param nfds the biggest socket number in from + 1
723 GNUNET_NETWORK_fdset_copy_native (struct GNUNET_NETWORK_FDSet *to,
724 const fd_set * from, int nfds)
726 FD_COPY (from, &to->sds);
732 * Set a native fd in a set
734 * @param to destination
735 * @param nfd native FD to set
737 void GNUNET_NETWORK_fdset_set_native (struct GNUNET_NETWORK_FDSet *to,
740 FD_SET (nfd, &to->sds);
741 to->nsds = GNUNET_MAX (nfd + 1, to->nsds);
746 * Add a file handle to the fd set
748 * @param h the file handle to add
751 GNUNET_NETWORK_fdset_handle_set (struct GNUNET_NETWORK_FDSet *fds,
752 const struct GNUNET_DISK_FileHandle *h)
757 GNUNET_DISK_internal_file_handle_ (h, &hw, sizeof (HANDLE));
758 GNUNET_CONTAINER_slist_add (fds->handles,
759 GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT,
760 &hw, sizeof (HANDLE));
764 GNUNET_DISK_internal_file_handle_ (h, &fd, sizeof (int));
765 FD_SET (fd, &fds->sds);
766 if (fd + 1 > fds->nsds)
774 * Check if a file handle is part of an fd set
776 * @param h file handle
777 * @return GNUNET_YES if the file handle is part of the set
780 GNUNET_NETWORK_fdset_handle_isset (const struct GNUNET_NETWORK_FDSet *fds,
781 const struct GNUNET_DISK_FileHandle *h)
785 return GNUNET_CONTAINER_slist_contains (fds->handles, &h->h,
788 return FD_ISSET (h->fd, &fds->sds);
794 * Checks if two fd sets overlap
795 * @param fds1 first fd set
796 * @param fds2 second fd set
797 * @return GNUNET_YES if they do overlap, GNUNET_NO otherwise
800 GNUNET_NETWORK_fdset_overlap (const struct GNUNET_NETWORK_FDSet *fds1,
801 const struct GNUNET_NETWORK_FDSet *fds2)
805 if (nfds < fds2->nsds)
807 for (; nfds >= 0; nfds--)
808 if (FD_ISSET (nfds, &fds1->sds) && FD_ISSET (nfds, &fds2->sds))
812 struct GNUNET_CONTAINER_SList_Iterator *it;
814 for (it = GNUNET_CONTAINER_slist_begin (fds1->handles);
815 GNUNET_CONTAINER_slist_end (it) != GNUNET_YES;
816 GNUNET_CONTAINER_slist_next (it))
820 h = GNUNET_CONTAINER_slist_get (it, NULL);
821 if (GNUNET_CONTAINER_slist_contains
822 (fds2->handles, h, sizeof (HANDLE)))
824 GNUNET_CONTAINER_slist_iter_destroy (it);
828 GNUNET_CONTAINER_slist_iter_destroy (it);
837 * @return a new fd set
839 struct GNUNET_NETWORK_FDSet *
840 GNUNET_NETWORK_fdset_create ()
842 struct GNUNET_NETWORK_FDSet *fds;
843 fds = GNUNET_malloc (sizeof (struct GNUNET_NETWORK_FDSet));
845 fds->handles = GNUNET_CONTAINER_slist_create ();
847 GNUNET_NETWORK_fdset_zero (fds);
853 * Releases the associated memory of an fd set
857 GNUNET_NETWORK_fdset_destroy (struct GNUNET_NETWORK_FDSet *fds)
860 GNUNET_CONTAINER_slist_destroy (fds->handles);
866 * Check if sockets meet certain conditions
867 * @param rfds set of sockets to be checked for readability
868 * @param wfds set of sockets to be checked for writability
869 * @param efds set of sockets to be checked for exceptions
870 * @param timeout relative value when to return
871 * @return number of selected sockets, GNUNET_SYSERR on error
874 GNUNET_NETWORK_socket_select (struct GNUNET_NETWORK_FDSet *rfds,
875 struct GNUNET_NETWORK_FDSet *wfds,
876 struct GNUNET_NETWORK_FDSet *efds,
877 const struct GNUNET_TIME_Relative timeout)
891 handles = GNUNET_CONTAINER_slist_count (rfds->handles);
896 nfds = GNUNET_MAX (nfds, wfds->nsds);
898 handles += GNUNET_CONTAINER_slist_count (wfds->handles);
903 nfds = GNUNET_MAX (nfds, efds->nsds);
905 handles += GNUNET_CONTAINER_slist_count (efds->handles);
910 tv.tv_sec = timeout.value / GNUNET_TIME_UNIT_SECONDS.value;
912 1000 * (timeout.value - (tv.tv_sec * GNUNET_TIME_UNIT_SECONDS.value));
913 if ((nfds == 0) && (timeout.value == GNUNET_TIME_UNIT_FOREVER_REL.value)
919 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
921 ("Fatal internal logic error, process hangs in `%s' (abort with CTRL-C)!\n"),
926 return select (nfds + 1,
927 (rfds != NULL) ? &rfds->sds : NULL,
928 (wfds != NULL) ? &wfds->sds : NULL,
929 (efds != NULL) ? &efds->sds : NULL,
930 (timeout.value == GNUNET_TIME_UNIT_FOREVER_REL.value)
935 fd_set sock_read, sock_write, sock_except;
936 fd_set aread, awrite, aexcept;
937 struct GNUNET_CONTAINER_SList *handles_read, *handles_write,
941 struct timeval tvslice;
945 #define SAFE_FD_ISSET(fd, set) (set != NULL && FD_ISSET(fd, set))
947 /* calculate how long we need to wait in milliseconds */
948 if (timeout.value == GNUNET_TIME_UNIT_FOREVER_REL.value)
952 ms_total = timeout.value / GNUNET_TIME_UNIT_MILLISECONDS.value;
954 /* select() may be used as a portable way to sleep */
955 if (!(rfds || wfds || efds))
962 handles_read = GNUNET_CONTAINER_slist_create ();
963 handles_write = GNUNET_CONTAINER_slist_create ();
964 handles_except = GNUNET_CONTAINER_slist_create ();
967 sock_read = rfds->sds;
969 FD_ZERO (&sock_read);
971 sock_write = wfds->sds;
973 FD_ZERO (&sock_write);
975 sock_except = efds->sds;
977 FD_ZERO (&sock_except);
979 /* multiplex between winsock select() and waiting on the handles */
983 limit = GetTickCount () + ms_total;
992 /* overwrite the zero'd sets here; the select call
993 * will clear those that are not active */
994 FD_COPY (&sock_read, &aread);
995 FD_COPY (&sock_write, &awrite);
996 FD_COPY (&sock_except, &aexcept);
998 tvslice.tv_usec = 100000;
1000 select (nfds + 1, &aread, &awrite, &aexcept,
1001 &tvslice)) == SOCKET_ERROR)
1004 SetErrnoFromWinsockError (WSAGetLastError ());
1005 if (errno == ENOTSOCK)
1009 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "select");
1012 goto select_loop_end;
1016 /* Poll read pipes */
1020 struct GNUNET_CONTAINER_SList_Iterator *i;
1021 for (i = GNUNET_CONTAINER_slist_begin (rfds->handles);
1022 GNUNET_CONTAINER_slist_end (i) != GNUNET_YES;
1023 GNUNET_CONTAINER_slist_next (i))
1028 h = *(HANDLE *) GNUNET_CONTAINER_slist_get (i, NULL);
1029 if (!PeekNamedPipe (h, NULL, 0, NULL, &dwBytes, NULL))
1032 SetErrnoFromWinError (GetLastError ());
1035 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
1039 goto select_loop_end;
1044 GNUNET_CONTAINER_slist_add (handles_read,
1045 GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT,
1046 &h, sizeof (HANDLE));
1050 GNUNET_CONTAINER_slist_iter_destroy (i);
1053 /* Poll for faulty pipes */
1057 struct GNUNET_CONTAINER_SList_Iterator *i;
1058 for (i = GNUNET_CONTAINER_slist_begin (efds->handles);
1059 GNUNET_CONTAINER_slist_end (i) != GNUNET_YES;
1060 GNUNET_CONTAINER_slist_next (i))
1065 h = *(HANDLE *) GNUNET_CONTAINER_slist_get (i, NULL);
1066 if (!PeekNamedPipe (h, NULL, 0, NULL, &dwBytes, NULL))
1069 GNUNET_CONTAINER_slist_add (handles_except,
1070 GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT,
1071 &h, sizeof (HANDLE));
1075 GNUNET_CONTAINER_slist_iter_destroy (i);
1080 GNUNET_CONTAINER_slist_append (handles_write, wfds->handles);
1081 retcode += GNUNET_CONTAINER_slist_count (wfds->handles);
1084 /* Check for closed sockets */
1085 for (i = 0; i < nfds; i++)
1088 if (SAFE_FD_ISSET (i, &sock_read))
1091 struct sockaddr addr;
1093 if (getpeername (i, &addr, &len) == SOCKET_ERROR)
1099 (i, SOL_SOCKET, SO_ERROR, (char *) &err, &len) == 0
1100 && err == WSAENOTCONN)
1103 if (!SAFE_FD_ISSET (i, &aread))
1114 if (retcode == 0 && nfds == 0)
1115 Sleep (GNUNET_MIN (100, limit - GetTickCount ()));
1117 while (retcode == 0 && (ms_total == INFINITE || GetTickCount () < limit));
1125 GNUNET_NETWORK_fdset_zero (rfds);
1126 GNUNET_NETWORK_fdset_copy_native (rfds, &aread, retcode);
1127 GNUNET_CONTAINER_slist_clear (rfds->handles);
1128 GNUNET_CONTAINER_slist_append (rfds->handles, handles_read);
1134 GNUNET_NETWORK_fdset_zero (wfds);
1135 GNUNET_NETWORK_fdset_copy_native (wfds, &awrite, retcode);
1136 GNUNET_CONTAINER_slist_clear (wfds->handles);
1137 GNUNET_CONTAINER_slist_append (wfds->handles, handles_write);
1142 GNUNET_NETWORK_fdset_zero (efds);
1143 GNUNET_NETWORK_fdset_copy_native (efds, &aexcept, retcode);
1144 GNUNET_CONTAINER_slist_clear (efds->handles);
1145 GNUNET_CONTAINER_slist_append (efds->handles, handles_except);
1149 GNUNET_CONTAINER_slist_destroy (handles_read);
1150 GNUNET_CONTAINER_slist_destroy (handles_write);
1151 GNUNET_CONTAINER_slist_destroy (handles_except);
1158 /* end of network.c */