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;
193 ret = GNUNET_malloc (sizeof (struct GNUNET_NETWORK_Handle));
194 ret->fd = accept (desc->fd, address, address_len);
195 if (ret->fd == INVALID_SOCKET)
198 SetErrnoFromWinsockError (WSAGetLastError ());
204 if (ret->fd >= FD_SETSIZE)
206 GNUNET_break (0 == close (ret->fd));
212 if (GNUNET_SYSERR == socket_set_blocking (ret, GNUNET_NO))
216 /* we might want to treat this one as fatal... */
218 GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (ret));
223 if (GNUNET_OK != socket_set_inheritable (ret))
224 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
225 "socket_set_inheritable");
228 socket_set_nosigpipe (ret);
231 if (address->sa_family != AF_UNIX)
233 socket_set_nodelay (ret);
239 * Bind to a connected socket
241 * @param address address to be bound
242 * @param address_len length of address
243 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
246 GNUNET_NETWORK_socket_bind (struct GNUNET_NETWORK_Handle *desc,
247 const struct sockaddr *address,
248 socklen_t address_len)
252 ret = bind (desc->fd, address, address_len);
254 if (SOCKET_ERROR == ret)
255 SetErrnoFromWinsockError (WSAGetLastError ());
257 return ret == 0 ? GNUNET_OK : GNUNET_SYSERR;
264 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
267 GNUNET_NETWORK_socket_close (struct GNUNET_NETWORK_Handle *desc)
272 ret = closesocket (desc->fd);
273 SetErrnoFromWinsockError (WSAGetLastError ());
275 ret = close (desc->fd);
278 return (ret == 0) ? GNUNET_OK : GNUNET_SYSERR;
285 * @param address peer address
286 * @param address_len length of address
287 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
290 GNUNET_NETWORK_socket_connect (const struct GNUNET_NETWORK_Handle *desc,
291 const struct sockaddr *address,
292 socklen_t address_len)
295 ret = connect (desc->fd, address, address_len);
298 if (SOCKET_ERROR == ret)
301 SetErrnoFromWinsockError (WSAGetLastError ());
302 if (errno == EWOULDBLOCK)
306 return ret == 0 ? GNUNET_OK : GNUNET_SYSERR;
314 * @param level protocol level of the option
315 * @param optname identifier of the option
316 * @param optval options
317 * @param optlen length of optval
318 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
321 GNUNET_NETWORK_socket_getsockopt (const struct GNUNET_NETWORK_Handle *desc,
322 int level, int optname, void *optval,
326 ret = getsockopt (desc->fd, level, optname, optval, optlen);
329 if (ret == 0 && level == SOL_SOCKET && optname == SO_ERROR)
330 *((int *) optval) = GetErrnoFromWinsockError (*((int *) optval));
332 else if (SOCKET_ERROR == ret)
333 SetErrnoFromWinsockError (WSAGetLastError ());
336 return ret == 0 ? GNUNET_OK : GNUNET_SYSERR;
343 * @param backlog length of the listen queue
344 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
347 GNUNET_NETWORK_socket_listen (const struct GNUNET_NETWORK_Handle *desc,
351 ret = listen (desc->fd, backlog);
354 if (SOCKET_ERROR == ret)
355 SetErrnoFromWinsockError (WSAGetLastError ());
358 return ret == 0 ? GNUNET_OK : GNUNET_SYSERR;
363 * How much data is available to be read on this descriptor?
365 * Returns GNUNET_NO if no data is available, or on error!
369 GNUNET_NETWORK_socket_recvfrom_amount (const struct GNUNET_NETWORK_Handle
375 /* How much is there to be read? */
377 error = ioctl (desc->fd, FIONREAD, &pending);
380 error = ioctlsocket (desc->fd, FIONREAD, &pending);
381 if (error != SOCKET_ERROR)
389 * Read data from a connected socket (always non-blocking).
391 * @param buffer buffer
392 * @param length length of buffer
393 * @param src_addr either the source to recv from, or all zeroes
394 * to be filled in by recvfrom
395 * @param addrlen length of the addr
398 GNUNET_NETWORK_socket_recvfrom (const struct GNUNET_NETWORK_Handle * desc,
399 void *buffer, size_t length,
400 struct sockaddr * src_addr,
408 flags |= MSG_DONTWAIT;
411 ret = recvfrom (desc->fd, buffer, length, flags, src_addr, addrlen);
413 if (SOCKET_ERROR == ret)
414 SetErrnoFromWinsockError (WSAGetLastError ());
421 * Read data from a connected socket (always non-blocking).
423 * @param buffer buffer
424 * @param length length of buffer
427 GNUNET_NETWORK_socket_recv (const struct GNUNET_NETWORK_Handle * desc,
428 void *buffer, size_t length)
435 flags |= MSG_DONTWAIT;
437 ret = recv (desc->fd, buffer, length, flags);
439 if (SOCKET_ERROR == ret)
440 SetErrnoFromWinsockError (WSAGetLastError ());
447 * Send data (always non-blocking).
450 * @param buffer data to send
451 * @param length size of the buffer
452 * @return number of bytes sent, GNUNET_SYSERR on error
455 GNUNET_NETWORK_socket_send (const struct GNUNET_NETWORK_Handle * desc,
456 const void *buffer, size_t length)
463 flags |= MSG_DONTWAIT;
467 flags |= MSG_NOSIGNAL;
470 ret = send (desc->fd, buffer, length, flags);
473 if (SOCKET_ERROR == ret)
474 SetErrnoFromWinsockError (WSAGetLastError ());
482 * Send data to a particular destination (always non-blocking).
483 * This function only works for UDP sockets.
486 * @param message data to send
487 * @param length size of the data
488 * @param dest_addr destination address
489 * @param dest_len length of address
490 * @return number of bytes sent, GNUNET_SYSERR on error
493 GNUNET_NETWORK_socket_sendto (const struct GNUNET_NETWORK_Handle * desc,
494 const void *message, size_t length,
495 const struct sockaddr * dest_addr,
503 flags |= MSG_DONTWAIT;
506 flags |= MSG_NOSIGNAL;
508 ret = sendto (desc->fd, message, length, flags, dest_addr, dest_len);
510 if (SOCKET_ERROR == ret)
511 SetErrnoFromWinsockError (WSAGetLastError ());
520 * @param level protocol level of the option
521 * @param option_name option identifier
522 * @param option_value value to set
523 * @param option_len size of option_value
524 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
527 GNUNET_NETWORK_socket_setsockopt (struct GNUNET_NETWORK_Handle *fd,
528 int level, int option_name,
529 const void *option_value,
530 socklen_t option_len)
534 ret = setsockopt (fd->fd, level, option_name, option_value, option_len);
536 if (SOCKET_ERROR == ret)
537 SetErrnoFromWinsockError (WSAGetLastError ());
539 return ret == 0 ? GNUNET_OK : GNUNET_SYSERR;
544 * Create a new socket. Configure it for non-blocking IO and
545 * mark it as non-inheritable to child processes (set the
546 * close-on-exec flag).
548 * @param domain domain of the socket
549 * @param type socket type
550 * @param protocol network protocol
551 * @return new socket, NULL on error
553 struct GNUNET_NETWORK_Handle *
554 GNUNET_NETWORK_socket_create (int domain, int type, int protocol)
556 struct GNUNET_NETWORK_Handle *ret;
557 ret = GNUNET_malloc (sizeof (struct GNUNET_NETWORK_Handle));
558 ret->fd = socket (domain, type, protocol);
559 if (INVALID_SOCKET == ret->fd)
562 SetErrnoFromWinsockError (WSAGetLastError ());
569 if (ret->fd >= FD_SETSIZE)
571 GNUNET_break (0 == close (ret->fd));
578 if (GNUNET_SYSERR == socket_set_blocking (ret, GNUNET_NO))
580 /* we might want to treat this one as fatal... */
582 GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (ret));
587 if (GNUNET_OK != socket_set_inheritable (ret))
588 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
589 "socket_set_inheritable");
592 socket_set_nosigpipe (ret);
594 if ( (type == SOCK_STREAM)
596 && (domain != AF_UNIX)
599 socket_set_nodelay (ret);
605 * Shut down socket operations
607 * @param how type of shutdown
608 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
611 GNUNET_NETWORK_socket_shutdown (struct GNUNET_NETWORK_Handle *desc, int how)
615 ret = shutdown (desc->fd, how);
618 SetErrnoFromWinsockError (WSAGetLastError ());
620 return ret == 0 ? GNUNET_OK : GNUNET_SYSERR;
629 GNUNET_NETWORK_fdset_zero (struct GNUNET_NETWORK_FDSet *fds)
634 GNUNET_CONTAINER_slist_clear (fds->handles);
639 * Add a socket to the FD set
641 * @param desc socket to add
644 GNUNET_NETWORK_fdset_set (struct GNUNET_NETWORK_FDSet *fds,
645 const struct GNUNET_NETWORK_Handle *desc)
647 FD_SET (desc->fd, &fds->sds);
648 if (desc->fd + 1 > fds->nsds)
649 fds->nsds = desc->fd + 1;
654 * Check whether a socket is part of the fd set
657 * @return 0 if the FD is not set
660 GNUNET_NETWORK_fdset_isset (const struct GNUNET_NETWORK_FDSet *fds,
661 const struct GNUNET_NETWORK_Handle *desc)
663 return FD_ISSET (desc->fd, &fds->sds);
668 * Add one fd set to another
669 * @param dst the fd set to add to
670 * @param src the fd set to add from
673 GNUNET_NETWORK_fdset_add (struct GNUNET_NETWORK_FDSet *dst,
674 const struct GNUNET_NETWORK_FDSet *src)
677 for (nfds = src->nsds; nfds > 0; nfds--)
678 if (FD_ISSET (nfds, &src->sds))
681 FD_SET (nfds, &dst->sds);
682 if (nfds + 1 > dst->nsds)
683 dst->nsds = nfds + 1;
686 GNUNET_CONTAINER_slist_append (dst->handles, src->handles);
692 * Copy one fd set to another
694 * @param to destination
698 GNUNET_NETWORK_fdset_copy (struct GNUNET_NETWORK_FDSet *to,
699 const struct GNUNET_NETWORK_FDSet *from)
701 FD_COPY (&from->sds, &to->sds);
702 to->nsds = from->nsds;
705 GNUNET_CONTAINER_slist_clear (to->handles);
706 GNUNET_CONTAINER_slist_append (to->handles, from->handles);
711 GNUNET_NETWORK_get_fd (struct GNUNET_NETWORK_Handle *desc)
717 * Copy a native fd set
719 * @param to destination
720 * @param from native source set
721 * @param nfds the biggest socket number in from + 1
724 GNUNET_NETWORK_fdset_copy_native (struct GNUNET_NETWORK_FDSet *to,
725 const fd_set * from, int nfds)
727 FD_COPY (from, &to->sds);
733 * Set a native fd in a set
735 * @param to destination
736 * @param nfd native FD to set
738 void GNUNET_NETWORK_fdset_set_native (struct GNUNET_NETWORK_FDSet *to,
741 FD_SET (nfd, &to->sds);
742 to->nsds = GNUNET_MAX (nfd + 1, to->nsds);
747 * Add a file handle to the fd set
749 * @param h the file handle to add
752 GNUNET_NETWORK_fdset_handle_set (struct GNUNET_NETWORK_FDSet *fds,
753 const struct GNUNET_DISK_FileHandle *h)
758 GNUNET_DISK_internal_file_handle_ (h, &hw, sizeof (HANDLE));
759 GNUNET_CONTAINER_slist_add (fds->handles,
760 GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT,
761 &hw, sizeof (HANDLE));
765 GNUNET_DISK_internal_file_handle_ (h, &fd, sizeof (int));
766 FD_SET (fd, &fds->sds);
767 if (fd + 1 > fds->nsds)
775 * Check if a file handle is part of an fd set
777 * @param h file handle
778 * @return GNUNET_YES if the file handle is part of the set
781 GNUNET_NETWORK_fdset_handle_isset (const struct GNUNET_NETWORK_FDSet *fds,
782 const struct GNUNET_DISK_FileHandle *h)
786 return GNUNET_CONTAINER_slist_contains (fds->handles, &h->h,
789 return FD_ISSET (h->fd, &fds->sds);
795 * Checks if two fd sets overlap
796 * @param fds1 first fd set
797 * @param fds2 second fd set
798 * @return GNUNET_YES if they do overlap, GNUNET_NO otherwise
801 GNUNET_NETWORK_fdset_overlap (const struct GNUNET_NETWORK_FDSet *fds1,
802 const struct GNUNET_NETWORK_FDSet *fds2)
806 if (nfds < fds2->nsds)
808 for (; nfds >= 0; nfds--)
809 if (FD_ISSET (nfds, &fds1->sds) && FD_ISSET (nfds, &fds2->sds))
813 struct GNUNET_CONTAINER_SList_Iterator *it;
815 for (it = GNUNET_CONTAINER_slist_begin (fds1->handles);
816 GNUNET_CONTAINER_slist_end (it) != GNUNET_YES;
817 GNUNET_CONTAINER_slist_next (it))
821 h = GNUNET_CONTAINER_slist_get (it, NULL);
822 if (GNUNET_CONTAINER_slist_contains
823 (fds2->handles, h, sizeof (HANDLE)))
825 GNUNET_CONTAINER_slist_iter_destroy (it);
829 GNUNET_CONTAINER_slist_iter_destroy (it);
838 * @return a new fd set
840 struct GNUNET_NETWORK_FDSet *
841 GNUNET_NETWORK_fdset_create ()
843 struct GNUNET_NETWORK_FDSet *fds;
844 fds = GNUNET_malloc (sizeof (struct GNUNET_NETWORK_FDSet));
846 fds->handles = GNUNET_CONTAINER_slist_create ();
848 GNUNET_NETWORK_fdset_zero (fds);
854 * Releases the associated memory of an fd set
858 GNUNET_NETWORK_fdset_destroy (struct GNUNET_NETWORK_FDSet *fds)
861 GNUNET_CONTAINER_slist_destroy (fds->handles);
867 * Check if sockets meet certain conditions
868 * @param rfds set of sockets to be checked for readability
869 * @param wfds set of sockets to be checked for writability
870 * @param efds set of sockets to be checked for exceptions
871 * @param timeout relative value when to return
872 * @return number of selected sockets, GNUNET_SYSERR on error
875 GNUNET_NETWORK_socket_select (struct GNUNET_NETWORK_FDSet *rfds,
876 struct GNUNET_NETWORK_FDSet *wfds,
877 struct GNUNET_NETWORK_FDSet *efds,
878 const struct GNUNET_TIME_Relative timeout)
892 handles = GNUNET_CONTAINER_slist_count (rfds->handles);
897 nfds = GNUNET_MAX (nfds, wfds->nsds);
899 handles += GNUNET_CONTAINER_slist_count (wfds->handles);
904 nfds = GNUNET_MAX (nfds, efds->nsds);
906 handles += GNUNET_CONTAINER_slist_count (efds->handles);
911 tv.tv_sec = timeout.value / GNUNET_TIME_UNIT_SECONDS.value;
913 1000 * (timeout.value - (tv.tv_sec * GNUNET_TIME_UNIT_SECONDS.value));
914 if ((nfds == 0) && (timeout.value == GNUNET_TIME_UNIT_FOREVER_REL.value)
920 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
922 ("Fatal internal logic error, process hangs in `%s' (abort with CTRL-C)!\n"),
927 return select (nfds + 1,
928 (rfds != NULL) ? &rfds->sds : NULL,
929 (wfds != NULL) ? &wfds->sds : NULL,
930 (efds != NULL) ? &efds->sds : NULL,
931 (timeout.value == GNUNET_TIME_UNIT_FOREVER_REL.value)
936 fd_set sock_read, sock_write, sock_except;
937 fd_set aread, awrite, aexcept;
938 struct GNUNET_CONTAINER_SList *handles_read, *handles_write,
942 struct timeval tvslice;
946 #define SAFE_FD_ISSET(fd, set) (set != NULL && FD_ISSET(fd, set))
948 /* calculate how long we need to wait in milliseconds */
949 if (timeout.value == GNUNET_TIME_UNIT_FOREVER_REL.value)
953 ms_total = timeout.value / GNUNET_TIME_UNIT_MILLISECONDS.value;
955 /* select() may be used as a portable way to sleep */
956 if (!(rfds || wfds || efds))
963 handles_read = GNUNET_CONTAINER_slist_create ();
964 handles_write = GNUNET_CONTAINER_slist_create ();
965 handles_except = GNUNET_CONTAINER_slist_create ();
968 sock_read = rfds->sds;
970 FD_ZERO (&sock_read);
972 sock_write = wfds->sds;
974 FD_ZERO (&sock_write);
976 sock_except = efds->sds;
978 FD_ZERO (&sock_except);
980 /* multiplex between winsock select() and waiting on the handles */
984 limit = GetTickCount () + ms_total;
993 /* overwrite the zero'd sets here; the select call
994 * will clear those that are not active */
995 FD_COPY (&sock_read, &aread);
996 FD_COPY (&sock_write, &awrite);
997 FD_COPY (&sock_except, &aexcept);
999 tvslice.tv_usec = 100000;
1001 select (nfds + 1, &aread, &awrite, &aexcept,
1002 &tvslice)) == SOCKET_ERROR)
1005 SetErrnoFromWinsockError (WSAGetLastError ());
1006 if (errno == ENOTSOCK)
1010 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "select");
1013 goto select_loop_end;
1017 /* Poll read pipes */
1021 struct GNUNET_CONTAINER_SList_Iterator *i;
1022 for (i = GNUNET_CONTAINER_slist_begin (rfds->handles);
1023 GNUNET_CONTAINER_slist_end (i) != GNUNET_YES;
1024 GNUNET_CONTAINER_slist_next (i))
1029 h = *(HANDLE *) GNUNET_CONTAINER_slist_get (i, NULL);
1030 if (!PeekNamedPipe (h, NULL, 0, NULL, &dwBytes, NULL))
1033 SetErrnoFromWinError (GetLastError ());
1036 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
1040 goto select_loop_end;
1045 GNUNET_CONTAINER_slist_add (handles_read,
1046 GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT,
1047 &h, sizeof (HANDLE));
1051 GNUNET_CONTAINER_slist_iter_destroy (i);
1054 /* Poll for faulty pipes */
1058 struct GNUNET_CONTAINER_SList_Iterator *i;
1059 for (i = GNUNET_CONTAINER_slist_begin (efds->handles);
1060 GNUNET_CONTAINER_slist_end (i) != GNUNET_YES;
1061 GNUNET_CONTAINER_slist_next (i))
1066 h = *(HANDLE *) GNUNET_CONTAINER_slist_get (i, NULL);
1067 if (!PeekNamedPipe (h, NULL, 0, NULL, &dwBytes, NULL))
1070 GNUNET_CONTAINER_slist_add (handles_except,
1071 GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT,
1072 &h, sizeof (HANDLE));
1076 GNUNET_CONTAINER_slist_iter_destroy (i);
1081 GNUNET_CONTAINER_slist_append (handles_write, wfds->handles);
1082 retcode += GNUNET_CONTAINER_slist_count (wfds->handles);
1085 /* Check for closed sockets */
1086 for (i = 0; i < nfds; i++)
1089 if (SAFE_FD_ISSET (i, &sock_read))
1092 struct sockaddr addr;
1094 if (getpeername (i, &addr, &len) == SOCKET_ERROR)
1100 (i, SOL_SOCKET, SO_ERROR, (char *) &err, &len) == 0
1101 && err == WSAENOTCONN)
1104 if (!SAFE_FD_ISSET (i, &aread))
1115 if (retcode == 0 && nfds == 0)
1116 Sleep (GNUNET_MIN (100, limit - GetTickCount ()));
1118 while (retcode == 0 && (ms_total == INFINITE || GetTickCount () < limit));
1126 GNUNET_NETWORK_fdset_zero (rfds);
1127 GNUNET_NETWORK_fdset_copy_native (rfds, &aread, retcode);
1128 GNUNET_CONTAINER_slist_clear (rfds->handles);
1129 GNUNET_CONTAINER_slist_append (rfds->handles, handles_read);
1135 GNUNET_NETWORK_fdset_zero (wfds);
1136 GNUNET_NETWORK_fdset_copy_native (wfds, &awrite, retcode);
1137 GNUNET_CONTAINER_slist_clear (wfds->handles);
1138 GNUNET_CONTAINER_slist_append (wfds->handles, handles_write);
1143 GNUNET_NETWORK_fdset_zero (efds);
1144 GNUNET_NETWORK_fdset_copy_native (efds, &aexcept, retcode);
1145 GNUNET_CONTAINER_slist_clear (efds->handles);
1146 GNUNET_CONTAINER_slist_append (efds->handles, handles_except);
1150 GNUNET_CONTAINER_slist_destroy (handles_read);
1151 GNUNET_CONTAINER_slist_destroy (handles_write);
1152 GNUNET_CONTAINER_slist_destroy (handles_except);
1159 /* end of network.c */