1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef APR_NETWORK_IO_H
18 #define APR_NETWORK_IO_H
20 * @file apr_network_io.h
21 * @brief APR Network library
25 #include "apr_pools.h"
26 #include "apr_file_io.h"
27 #include "apr_errno.h"
28 #include "apr_inherit.h"
30 #if APR_HAVE_NETINET_IN_H
31 #include <netinet/in.h>
36 #endif /* __cplusplus */
39 * @defgroup apr_network_io Network Routines
44 #ifndef APR_MAX_SECS_TO_LINGER
45 /** Maximum seconds to linger */
46 #define APR_MAX_SECS_TO_LINGER 30
50 /** Maximum hostname length */
51 #define APRMAXHOSTLEN 256
55 /** Default 'any' address */
56 #define APR_ANYADDR "0.0.0.0"
60 * @defgroup apr_sockopt Socket option definitions
63 #define APR_SO_LINGER 1 /**< Linger */
64 #define APR_SO_KEEPALIVE 2 /**< Keepalive */
65 #define APR_SO_DEBUG 4 /**< Debug */
66 #define APR_SO_NONBLOCK 8 /**< Non-blocking IO */
67 #define APR_SO_REUSEADDR 16 /**< Reuse addresses */
68 #define APR_SO_SNDBUF 64 /**< Send buffer */
69 #define APR_SO_RCVBUF 128 /**< Receive buffer */
70 #define APR_SO_DISCONNECTED 256 /**< Disconnected */
71 #define APR_TCP_NODELAY 512 /**< For SCTP sockets, this is mapped
72 * to STCP_NODELAY internally.
74 #define APR_TCP_NOPUSH 1024 /**< No push */
75 #define APR_RESET_NODELAY 2048 /**< This flag is ONLY set internally
76 * when we set APR_TCP_NOPUSH with
77 * APR_TCP_NODELAY set to tell us that
78 * APR_TCP_NODELAY should be turned on
79 * again when NOPUSH is turned off
81 #define APR_INCOMPLETE_READ 4096 /**< Set on non-blocking sockets
82 * (timeout != 0) on which the
83 * previous read() did not fill a buffer
84 * completely. the next apr_socket_recv()
85 * will first call select()/poll() rather than
86 * going straight into read(). (Can also
87 * be set by an application to force a
88 * select()/poll() call before the next
89 * read, in cases where the app expects
90 * that an immediate read would fail.)
92 #define APR_INCOMPLETE_WRITE 8192 /**< like APR_INCOMPLETE_READ, but for write
93 * @see APR_INCOMPLETE_READ
95 #define APR_IPV6_V6ONLY 16384 /**< Don't accept IPv4 connections on an
96 * IPv6 listening socket.
98 #define APR_TCP_DEFER_ACCEPT 32768 /**< Delay accepting of new connections
99 * until data is available.
100 * @see apr_socket_accept_filter
102 #define APR_SO_BROADCAST 65536 /**< Allow broadcast
107 /** Define what type of socket shutdown should occur. */
109 APR_SHUTDOWN_READ, /**< no longer allow read request */
110 APR_SHUTDOWN_WRITE, /**< no longer allow write requests */
111 APR_SHUTDOWN_READWRITE /**< no longer allow read or write requests */
112 } apr_shutdown_how_e;
114 #define APR_IPV4_ADDR_OK 0x01 /**< @see apr_sockaddr_info_get() */
115 #define APR_IPV6_ADDR_OK 0x02 /**< @see apr_sockaddr_info_get() */
117 #if (!APR_HAVE_IN_ADDR)
119 * We need to make sure we always have an in_addr type, so APR will just
120 * define it ourselves, if the platform doesn't provide it.
123 apr_uint32_t s_addr; /**< storage to hold the IP# */
127 /** @def APR_INADDR_NONE
128 * Not all platforms have a real INADDR_NONE. This macro replaces
129 * INADDR_NONE on all platforms.
132 #define APR_INADDR_NONE INADDR_NONE
134 #define APR_INADDR_NONE ((unsigned int) 0xffffffff)
139 * Not all platforms have these defined, so we'll define them here
140 * The default values come from FreeBSD 4.1.1
142 #define APR_INET AF_INET
144 * Let the system decide which address family to use
147 #define APR_UNSPEC AF_UNSPEC
153 * IPv6 Address Family. Not all platforms may have this defined.
156 #define APR_INET6 AF_INET6
160 * @defgroup IP_Proto IP Protocol Definitions for use when creating sockets
163 #define APR_PROTO_TCP 6 /**< TCP */
164 #define APR_PROTO_UDP 17 /**< UDP */
165 #define APR_PROTO_SCTP 132 /**< SCTP */
169 * Enum used to denote either the local and remote endpoint of a
173 APR_LOCAL, /**< Socket information for local end of connection */
174 APR_REMOTE /**< Socket information for remote end of connection */
178 * The specific declaration of inet_addr's ... some platforms fall back
179 * inet_network (this is not good, but necessary)
182 #if APR_HAVE_INET_ADDR
183 #define apr_inet_addr inet_addr
184 #elif APR_HAVE_INET_NETWORK /* only DGUX, as far as I know */
187 * not generally safe... inet_network() and inet_addr() perform
188 * different functions */
189 #define apr_inet_addr inet_network
192 /** A structure to represent sockets */
193 typedef struct apr_socket_t apr_socket_t;
195 * A structure to encapsulate headers and trailers for apr_socket_sendfile
197 typedef struct apr_hdtr_t apr_hdtr_t;
198 /** A structure to represent in_addr */
199 typedef struct in_addr apr_in_addr_t;
200 /** A structure to represent an IP subnet */
201 typedef struct apr_ipsubnet_t apr_ipsubnet_t;
203 /** @remark use apr_uint16_t just in case some system has a short that isn't 16 bits... */
204 typedef apr_uint16_t apr_port_t;
206 /** @remark It's defined here as I think it should all be platform safe...
207 * @see apr_sockaddr_t
209 typedef struct apr_sockaddr_t apr_sockaddr_t;
211 * APRs socket address type, used to ensure protocol independence
213 struct apr_sockaddr_t {
214 /** The pool to use... */
218 /** Either a string of the port number or the service name for the port */
220 /** The numeric port */
224 /** How big is the sockaddr we're using? */
226 /** How big is the ip address structure we're using? */
228 /** How big should the address buffer be? 16 for v4 or 46 for v6
229 * used in inet_ntop... */
231 /** This points to the IP address structure within the appropriate
232 * sockaddr structure. */
234 /** If multiple addresses were found by apr_sockaddr_info_get(), this
235 * points to a representation of the next address. */
236 apr_sockaddr_t *next;
237 /** Union of either IPv4 or IPv6 sockaddr. */
239 /** IPv4 sockaddr structure */
240 struct sockaddr_in sin;
242 /** IPv6 sockaddr structure */
243 struct sockaddr_in6 sin6;
245 #if APR_HAVE_SA_STORAGE
246 /** Placeholder to ensure that the size of this union is not
247 * dependent on whether APR_HAVE_IPV6 is defined. */
248 struct sockaddr_storage sas;
255 * Support reusing the socket on platforms which support it (from disconnect,
256 * specifically Win32.
257 * @remark Optional flag passed into apr_socket_sendfile()
259 #define APR_SENDFILE_DISCONNECT_SOCKET 1
262 /** A structure to encapsulate headers and trailers for apr_socket_sendfile */
264 /** An iovec to store the headers sent before the file. */
265 struct iovec* headers;
266 /** number of headers in the iovec */
268 /** An iovec to store the trailers sent after the file. */
269 struct iovec* trailers;
270 /** number of trailers in the iovec */
274 /* function definitions */
278 * @param new_sock The new socket that has been set up.
279 * @param family The address family of the socket (e.g., APR_INET).
280 * @param type The type of the socket (e.g., SOCK_STREAM).
281 * @param protocol The protocol of the socket (e.g., APR_PROTO_TCP).
282 * @param cont The pool for the apr_socket_t and associated storage.
283 * @note The pool will be used by various functions that operate on the
284 * socket. The caller must ensure that it is not used by other threads
287 APR_DECLARE(apr_status_t) apr_socket_create(apr_socket_t **new_sock,
288 int family, int type,
293 * Shutdown either reading, writing, or both sides of a socket.
294 * @param thesocket The socket to close
295 * @param how How to shutdown the socket. One of:
297 * APR_SHUTDOWN_READ no longer allow read requests
298 * APR_SHUTDOWN_WRITE no longer allow write requests
299 * APR_SHUTDOWN_READWRITE no longer allow read or write requests
301 * @see apr_shutdown_how_e
302 * @remark This does not actually close the socket descriptor, it just
303 * controls which calls are still valid on the socket.
305 APR_DECLARE(apr_status_t) apr_socket_shutdown(apr_socket_t *thesocket,
306 apr_shutdown_how_e how);
310 * @param thesocket The socket to close
312 APR_DECLARE(apr_status_t) apr_socket_close(apr_socket_t *thesocket);
315 * Bind the socket to its associated port
316 * @param sock The socket to bind
317 * @param sa The socket address to bind to
318 * @remark This may be where we will find out if there is any other process
319 * using the selected port.
321 APR_DECLARE(apr_status_t) apr_socket_bind(apr_socket_t *sock,
325 * Listen to a bound socket for connections.
326 * @param sock The socket to listen on
327 * @param backlog The number of outstanding connections allowed in the sockets
328 * listen queue. If this value is less than zero, the listen
329 * queue size is set to zero.
331 APR_DECLARE(apr_status_t) apr_socket_listen(apr_socket_t *sock,
332 apr_int32_t backlog);
335 * Accept a new connection request
336 * @param new_sock A copy of the socket that is connected to the socket that
337 * made the connection request. This is the socket which should
338 * be used for all future communication.
339 * @param sock The socket we are listening on.
340 * @param connection_pool The pool for the new socket.
341 * @note The pool will be used by various functions that operate on the
342 * socket. The caller must ensure that it is not used by other threads
345 APR_DECLARE(apr_status_t) apr_socket_accept(apr_socket_t **new_sock,
347 apr_pool_t *connection_pool);
350 * Issue a connection request to a socket either on the same machine
351 * or a different one.
352 * @param sock The socket we wish to use for our side of the connection
353 * @param sa The address of the machine we wish to connect to.
355 APR_DECLARE(apr_status_t) apr_socket_connect(apr_socket_t *sock,
359 * Determine whether the receive part of the socket has been closed by
360 * the peer (such that a subsequent call to apr_socket_read would
361 * return APR_EOF), if the socket's receive buffer is empty. This
362 * function does not block waiting for I/O.
364 * @param sock The socket to check
365 * @param atreadeof If APR_SUCCESS is returned, *atreadeof is set to
366 * non-zero if a subsequent read would return APR_EOF
367 * @return an error is returned if it was not possible to determine the
368 * status, in which case *atreadeof is not changed.
370 APR_DECLARE(apr_status_t) apr_socket_atreadeof(apr_socket_t *sock,
374 * Create apr_sockaddr_t from hostname, address family, and port.
375 * @param sa The new apr_sockaddr_t.
376 * @param hostname The hostname or numeric address string to resolve/parse, or
377 * NULL to build an address that corresponds to 0.0.0.0 or ::
378 * @param family The address family to use, or APR_UNSPEC if the system should
380 * @param port The port number.
381 * @param flags Special processing flags:
383 * APR_IPV4_ADDR_OK first query for IPv4 addresses; only look
384 * for IPv6 addresses if the first query failed;
385 * only valid if family is APR_UNSPEC and hostname
386 * isn't NULL; mutually exclusive with
388 * APR_IPV6_ADDR_OK first query for IPv6 addresses; only look
389 * for IPv4 addresses if the first query failed;
390 * only valid if family is APR_UNSPEC and hostname
391 * isn't NULL and APR_HAVE_IPV6; mutually exclusive
392 * with APR_IPV4_ADDR_OK
394 * @param p The pool for the apr_sockaddr_t and associated storage.
396 APR_DECLARE(apr_status_t) apr_sockaddr_info_get(apr_sockaddr_t **sa,
397 const char *hostname,
404 * Look up the host name from an apr_sockaddr_t.
405 * @param hostname The hostname.
406 * @param sa The apr_sockaddr_t.
407 * @param flags Special processing flags.
409 APR_DECLARE(apr_status_t) apr_getnameinfo(char **hostname,
414 * Parse hostname/IP address with scope id and port.
416 * Any of the following strings are accepted:
417 * 8080 (just the port number)
418 * www.apache.org (just the hostname)
419 * www.apache.org:8080 (hostname and port number)
420 * [fe80::1]:80 (IPv6 numeric address string only)
421 * [fe80::1%eth0] (IPv6 numeric address string and scope id)
425 * [abc] (not valid IPv6 numeric address string)
426 * abc:65536 (invalid port number)
428 * @param addr The new buffer containing just the hostname. On output, *addr
429 * will be NULL if no hostname/IP address was specfied.
430 * @param scope_id The new buffer containing just the scope id. On output,
431 * *scope_id will be NULL if no scope id was specified.
432 * @param port The port number. On output, *port will be 0 if no port was
434 * ### FIXME: 0 is a legal port (per RFC 1700). this should
435 * ### return something besides zero if the port is missing.
436 * @param str The input string to be parsed.
437 * @param p The pool from which *addr and *scope_id are allocated.
438 * @remark If scope id shouldn't be allowed, check for scope_id != NULL in
439 * addition to checking the return code. If addr/hostname should be
440 * required, check for addr == NULL in addition to checking the
443 APR_DECLARE(apr_status_t) apr_parse_addr_port(char **addr,
450 * Get name of the current machine
451 * @param buf A buffer to store the hostname in.
452 * @param len The maximum length of the hostname that can be stored in the
453 * buffer provided. The suggested length is APRMAXHOSTLEN + 1.
454 * @param cont The pool to use.
455 * @remark If the buffer was not large enough, an error will be returned.
457 APR_DECLARE(apr_status_t) apr_gethostname(char *buf, int len, apr_pool_t *cont);
460 * Return the data associated with the current socket
461 * @param data The user data associated with the socket.
462 * @param key The key to associate with the user data.
463 * @param sock The currently open socket.
465 APR_DECLARE(apr_status_t) apr_socket_data_get(void **data, const char *key,
469 * Set the data associated with the current socket.
470 * @param sock The currently open socket.
471 * @param data The user data to associate with the socket.
472 * @param key The key to associate with the data.
473 * @param cleanup The cleanup to call when the socket is destroyed.
475 APR_DECLARE(apr_status_t) apr_socket_data_set(apr_socket_t *sock, void *data,
477 apr_status_t (*cleanup)(void*));
480 * Send data over a network.
481 * @param sock The socket to send the data over.
482 * @param buf The buffer which contains the data to be sent.
483 * @param len On entry, the number of bytes to send; on exit, the number
487 * This functions acts like a blocking write by default. To change
488 * this behavior, use apr_socket_timeout_set() or the APR_SO_NONBLOCK
491 * It is possible for both bytes to be sent and an error to be returned.
493 * APR_EINTR is never returned.
496 APR_DECLARE(apr_status_t) apr_socket_send(apr_socket_t *sock, const char *buf,
500 * Send multiple buffers over a network.
501 * @param sock The socket to send the data over.
502 * @param vec The array of iovec structs containing the data to send
503 * @param nvec The number of iovec structs in the array
504 * @param len Receives the number of bytes actually written
507 * This functions acts like a blocking write by default. To change
508 * this behavior, use apr_socket_timeout_set() or the APR_SO_NONBLOCK
510 * The number of bytes actually sent is stored in argument 4.
512 * It is possible for both bytes to be sent and an error to be returned.
514 * APR_EINTR is never returned.
517 APR_DECLARE(apr_status_t) apr_socket_sendv(apr_socket_t *sock,
518 const struct iovec *vec,
519 apr_int32_t nvec, apr_size_t *len);
522 * @param sock The socket to send from
523 * @param where The apr_sockaddr_t describing where to send the data
524 * @param flags The flags to use
525 * @param buf The data to send
526 * @param len The length of the data to send
528 APR_DECLARE(apr_status_t) apr_socket_sendto(apr_socket_t *sock,
529 apr_sockaddr_t *where,
530 apr_int32_t flags, const char *buf,
534 * Read data from a socket. On success, the address of the peer from
535 * which the data was sent is copied into the @a from parameter, and the
536 * @a len parameter is updated to give the number of bytes written to
539 * @param from Updated with the address from which the data was received
540 * @param sock The socket to use
541 * @param flags The flags to use
542 * @param buf The buffer to use
543 * @param len The length of the available buffer
546 APR_DECLARE(apr_status_t) apr_socket_recvfrom(apr_sockaddr_t *from,
548 apr_int32_t flags, char *buf,
551 #if APR_HAS_SENDFILE || defined(DOXYGEN)
554 * Send a file from an open file descriptor to a socket, along with
555 * optional headers and trailers
556 * @param sock The socket to which we're writing
557 * @param file The open file from which to read
558 * @param hdtr A structure containing the headers and trailers to send
559 * @param offset Offset into the file where we should begin writing
560 * @param len (input) - Number of bytes to send from the file
561 * (output) - Number of bytes actually sent,
562 * including headers, file, and trailers
563 * @param flags APR flags that are mapped to OS specific flags
564 * @remark This functions acts like a blocking write by default. To change
565 * this behavior, use apr_socket_timeout_set() or the
566 * APR_SO_NONBLOCK socket option.
567 * The number of bytes actually sent is stored in the len parameter.
568 * The offset parameter is passed by reference for no reason; its
569 * value will never be modified by the apr_socket_sendfile() function.
571 APR_DECLARE(apr_status_t) apr_socket_sendfile(apr_socket_t *sock,
578 #endif /* APR_HAS_SENDFILE */
581 * Read data from a network.
582 * @param sock The socket to read the data from.
583 * @param buf The buffer to store the data in.
584 * @param len On entry, the number of bytes to receive; on exit, the number
588 * This functions acts like a blocking read by default. To change
589 * this behavior, use apr_socket_timeout_set() or the APR_SO_NONBLOCK
591 * The number of bytes actually received is stored in argument 3.
593 * It is possible for both bytes to be received and an APR_EOF or
594 * other error to be returned.
596 * APR_EINTR is never returned.
599 APR_DECLARE(apr_status_t) apr_socket_recv(apr_socket_t *sock,
600 char *buf, apr_size_t *len);
603 * Setup socket options for the specified socket
604 * @param sock The socket to set up.
605 * @param opt The option we would like to configure. One of:
607 * APR_SO_DEBUG -- turn on debugging information
608 * APR_SO_KEEPALIVE -- keep connections active
609 * APR_SO_LINGER -- lingers on close if data is present
610 * APR_SO_NONBLOCK -- Turns blocking on/off for socket
611 * When this option is enabled, use
612 * the APR_STATUS_IS_EAGAIN() macro to
613 * see if a send or receive function
614 * could not transfer data without
616 * APR_SO_REUSEADDR -- The rules used in validating addresses
617 * supplied to bind should allow reuse
618 * of local addresses.
619 * APR_SO_SNDBUF -- Set the SendBufferSize
620 * APR_SO_RCVBUF -- Set the ReceiveBufferSize
622 * @param on Value for the option.
624 APR_DECLARE(apr_status_t) apr_socket_opt_set(apr_socket_t *sock,
625 apr_int32_t opt, apr_int32_t on);
628 * Setup socket timeout for the specified socket
629 * @param sock The socket to set up.
630 * @param t Value for the timeout.
632 * t > 0 -- read and write calls return APR_TIMEUP if specified time
633 * elapsess with no data read or written
634 * t == 0 -- read and write calls never block
635 * t < 0 -- read and write calls block
638 APR_DECLARE(apr_status_t) apr_socket_timeout_set(apr_socket_t *sock,
639 apr_interval_time_t t);
642 * Query socket options for the specified socket
643 * @param sock The socket to query
644 * @param opt The option we would like to query. One of:
646 * APR_SO_DEBUG -- turn on debugging information
647 * APR_SO_KEEPALIVE -- keep connections active
648 * APR_SO_LINGER -- lingers on close if data is present
649 * APR_SO_NONBLOCK -- Turns blocking on/off for socket
650 * APR_SO_REUSEADDR -- The rules used in validating addresses
651 * supplied to bind should allow reuse
652 * of local addresses.
653 * APR_SO_SNDBUF -- Set the SendBufferSize
654 * APR_SO_RCVBUF -- Set the ReceiveBufferSize
655 * APR_SO_DISCONNECTED -- Query the disconnected state of the socket.
656 * (Currently only used on Windows)
658 * @param on Socket option returned on the call.
660 APR_DECLARE(apr_status_t) apr_socket_opt_get(apr_socket_t *sock,
661 apr_int32_t opt, apr_int32_t *on);
664 * Query socket timeout for the specified socket
665 * @param sock The socket to query
666 * @param t Socket timeout returned from the query.
668 APR_DECLARE(apr_status_t) apr_socket_timeout_get(apr_socket_t *sock,
669 apr_interval_time_t *t);
672 * Query the specified socket if at the OOB/Urgent data mark
673 * @param sock The socket to query
674 * @param atmark Is set to true if socket is at the OOB/urgent mark,
675 * otherwise is set to false.
677 APR_DECLARE(apr_status_t) apr_socket_atmark(apr_socket_t *sock,
681 * Return an address associated with a socket; either the address to
682 * which the socket is bound locally or the address of the peer
683 * to which the socket is connected.
684 * @param sa The returned apr_sockaddr_t.
685 * @param which Whether to retrieve the local or remote address
686 * @param sock The socket to use
688 APR_DECLARE(apr_status_t) apr_socket_addr_get(apr_sockaddr_t **sa,
689 apr_interface_e which,
693 * Return the IP address (in numeric address string format) in
694 * an APR socket address. APR will allocate storage for the IP address
695 * string from the pool of the apr_sockaddr_t.
696 * @param addr The IP address.
697 * @param sockaddr The socket address to reference.
699 APR_DECLARE(apr_status_t) apr_sockaddr_ip_get(char **addr,
700 apr_sockaddr_t *sockaddr);
703 * Write the IP address (in numeric address string format) of the APR
704 * socket address @a sockaddr into the buffer @a buf (of size @a buflen).
705 * @param sockaddr The socket address to reference.
707 APR_DECLARE(apr_status_t) apr_sockaddr_ip_getbuf(char *buf, apr_size_t buflen,
708 apr_sockaddr_t *sockaddr);
711 * See if the IP addresses in two APR socket addresses are
712 * equivalent. Appropriate logic is present for comparing
713 * IPv4-mapped IPv6 addresses with IPv4 addresses.
715 * @param addr1 One of the APR socket addresses.
716 * @param addr2 The other APR socket address.
717 * @remark The return value will be non-zero if the addresses
720 APR_DECLARE(int) apr_sockaddr_equal(const apr_sockaddr_t *addr1,
721 const apr_sockaddr_t *addr2);
724 * See if the IP address in an APR socket address refers to the wildcard
725 * address for the protocol family (e.g., INADDR_ANY for IPv4).
727 * @param addr The APR socket address to examine.
728 * @remark The return value will be non-zero if the address is
729 * initialized and is the wildcard address.
731 APR_DECLARE(int) apr_sockaddr_is_wildcard(const apr_sockaddr_t *addr);
734 * Return the type of the socket.
735 * @param sock The socket to query.
736 * @param type The returned type (e.g., SOCK_STREAM).
738 APR_DECLARE(apr_status_t) apr_socket_type_get(apr_socket_t *sock,
742 * Given an apr_sockaddr_t and a service name, set the port for the service
743 * @param sockaddr The apr_sockaddr_t that will have its port set
744 * @param servname The name of the service you wish to use
746 APR_DECLARE(apr_status_t) apr_getservbyname(apr_sockaddr_t *sockaddr,
747 const char *servname);
749 * Build an ip-subnet representation from an IP address and optional netmask or
751 * @param ipsub The new ip-subnet representation
752 * @param ipstr The input IP address string
753 * @param mask_or_numbits The input netmask or number-of-bits string, or NULL
754 * @param p The pool to allocate from
756 APR_DECLARE(apr_status_t) apr_ipsubnet_create(apr_ipsubnet_t **ipsub,
758 const char *mask_or_numbits,
762 * Test the IP address in an apr_sockaddr_t against a pre-built ip-subnet
764 * @param ipsub The ip-subnet representation
765 * @param sa The socket address to test
766 * @return non-zero if the socket address is within the subnet, 0 otherwise
768 APR_DECLARE(int) apr_ipsubnet_test(apr_ipsubnet_t *ipsub, apr_sockaddr_t *sa);
770 #if APR_HAS_SO_ACCEPTFILTER || defined(DOXYGEN)
772 * Set an OS level accept filter.
773 * @param sock The socket to put the accept filter on.
774 * @param name The accept filter
775 * @param args Any extra args to the accept filter. Passing NULL here removes
777 * @bug name and args should have been declared as const char *, as they are in
780 apr_status_t apr_socket_accept_filter(apr_socket_t *sock, char *name,
785 * Return the protocol of the socket.
786 * @param sock The socket to query.
787 * @param protocol The returned protocol (e.g., APR_PROTO_TCP).
789 APR_DECLARE(apr_status_t) apr_socket_protocol_get(apr_socket_t *sock,
793 * Get the pool used by the socket.
795 APR_POOL_DECLARE_ACCESSOR(socket);
798 * Set a socket to be inherited by child processes.
800 APR_DECLARE_INHERIT_SET(socket);
803 * Unset a socket from being inherited by child processes.
805 APR_DECLARE_INHERIT_UNSET(socket);
808 * @defgroup apr_mcast IP Multicast
813 * Join a Multicast Group
814 * @param sock The socket to join a multicast group
815 * @param join The address of the multicast group to join
816 * @param iface Address of the interface to use. If NULL is passed, the
817 * default multicast interface will be used. (OS Dependent)
818 * @param source Source Address to accept transmissions from (non-NULL
819 * implies Source-Specific Multicast)
821 APR_DECLARE(apr_status_t) apr_mcast_join(apr_socket_t *sock,
822 apr_sockaddr_t *join,
823 apr_sockaddr_t *iface,
824 apr_sockaddr_t *source);
827 * Leave a Multicast Group. All arguments must be the same as
829 * @param sock The socket to leave a multicast group
830 * @param addr The address of the multicast group to leave
831 * @param iface Address of the interface to use. If NULL is passed, the
832 * default multicast interface will be used. (OS Dependent)
833 * @param source Source Address to accept transmissions from (non-NULL
834 * implies Source-Specific Multicast)
836 APR_DECLARE(apr_status_t) apr_mcast_leave(apr_socket_t *sock,
837 apr_sockaddr_t *addr,
838 apr_sockaddr_t *iface,
839 apr_sockaddr_t *source);
842 * Set the Multicast Time to Live (ttl) for a multicast transmission.
843 * @param sock The socket to set the multicast ttl
844 * @param ttl Time to live to Assign. 0-255, default=1
845 * @remark If the TTL is 0, packets will only be seen by sockets on
846 * the local machine, and only when multicast loopback is enabled.
848 APR_DECLARE(apr_status_t) apr_mcast_hops(apr_socket_t *sock,
852 * Toggle IP Multicast Loopback
853 * @param sock The socket to set multicast loopback
854 * @param opt 0=disable, 1=enable
856 APR_DECLARE(apr_status_t) apr_mcast_loopback(apr_socket_t *sock,
861 * Set the Interface to be used for outgoing Multicast Transmissions.
862 * @param sock The socket to set the multicast interface on
863 * @param iface Address of the interface to use for Multicast
865 APR_DECLARE(apr_status_t) apr_mcast_interface(apr_socket_t *sock,
866 apr_sockaddr_t *iface);
876 #endif /* ! APR_NETWORK_IO_H */