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/* Copyright 1999-2005 The Apache Software Foundation or its licensors, as
* applicable.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file ap_listen.h
* @brief Apache Listeners Library
*
* @defgroup APACHE_CORE_LISTEN Apache Listeners Library
* @ingroup APACHE_CORE
* @{
*/
#ifndef AP_LISTEN_H
#define AP_LISTEN_H
#include "apr_network_io.h"
#include "httpd.h"
#include "http_config.h"
typedef struct ap_listen_rec ap_listen_rec;
typedef apr_status_t (*accept_function)(void **csd, ap_listen_rec *lr, apr_pool_t *ptrans);
/**
* @brief Apache's listeners record.
*
* These are used in the Multi-Processing Modules
* to setup all of the sockets for the MPM to listen to and accept on.
*/
struct ap_listen_rec {
/**
* The next listener in the list
*/
ap_listen_rec *next;
/**
* The actual socket
*/
apr_socket_t *sd;
/**
* The sockaddr the socket should bind to
*/
apr_sockaddr_t *bind_addr;
/**
* The accept function for this socket
*/
accept_function accept_func;
/**
* Is this socket currently active
*/
int active;
/**
* The default protocol for this listening socket.
*/
const char* protocol;
};
/**
* The global list of ap_listen_rec structures
*/
AP_DECLARE_DATA extern ap_listen_rec *ap_listeners;
/**
* Setup all of the defaults for the listener list
*/
AP_DECLARE(void) ap_listen_pre_config(void);
/**
* Loop through the global ap_listen_rec list and create all of the required
* sockets. This executes the listen and bind on the sockets.
* @param s The global server_rec
* @return The number of open sockets.
*/
AP_DECLARE(int) ap_setup_listeners(server_rec *s);
/**
* Loop through the global ap_listen_rec list and close each of the sockets.
*/
AP_DECLARE_NONSTD(void) ap_close_listeners(void);
/* Although these functions are exported from libmain, they are not really
* public functions. These functions are actually called while parsing the
* config file, when one of the LISTEN_COMMANDS directives is read. These
* should not ever be called by external modules. ALL MPMs should include
* LISTEN_COMMANDS in their command_rec table so that these functions are
* called.
*/
AP_DECLARE_NONSTD(const char *) ap_set_listenbacklog(cmd_parms *cmd, void *dummy, const char *arg);
AP_DECLARE_NONSTD(const char *) ap_set_listener(cmd_parms *cmd, void *dummy,
int argc, char *const argv[]);
AP_DECLARE_NONSTD(const char *) ap_set_send_buffer_size(cmd_parms *cmd, void *dummy,
const char *arg);
AP_DECLARE_NONSTD(const char *) ap_set_receive_buffer_size(cmd_parms *cmd,
void *dummy,
const char *arg);
#define LISTEN_COMMANDS \
AP_INIT_TAKE1("ListenBacklog", ap_set_listenbacklog, NULL, RSRC_CONF, \
"Maximum length of the queue of pending connections, as used by listen(2)"), \
AP_INIT_TAKE_ARGV("Listen", ap_set_listener, NULL, RSRC_CONF, \
"A port number or a numeric IP address and a port number, and an optional protocol"), \
AP_INIT_TAKE1("SendBufferSize", ap_set_send_buffer_size, NULL, RSRC_CONF, \
"Send buffer size in bytes"), \
AP_INIT_TAKE1("ReceiveBufferSize", ap_set_receive_buffer_size, NULL, \
RSRC_CONF, "Receive buffer size in bytes")
#endif
/** @} */