mirror of https://github.com/asterisk/asterisk
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
157 lines
3.7 KiB
157 lines
3.7 KiB
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* Copyright (C) 2021, Sangoma Technologies Corporation
|
|
*
|
|
* Kevin Harwell <kharwell@sangoma.com>
|
|
*
|
|
* See http://www.asterisk.org for more information about
|
|
* the Asterisk project. Please do not directly contact
|
|
* any of the maintainers of this project for assistance;
|
|
* the project provides a web site, mailing lists and IRC
|
|
* channels for your use.
|
|
*
|
|
* This program is free software, distributed under the terms of
|
|
* the GNU General Public License Version 2. See the LICENSE file
|
|
* at the top of the source tree.
|
|
*/
|
|
|
|
#include "asterisk.h"
|
|
|
|
#include "asterisk/utils.h"
|
|
|
|
#include "logger.h"
|
|
#include "transport.h"
|
|
#include "transport_websocket.h"
|
|
|
|
struct aeap_transport *aeap_transport_create(const char *type)
|
|
{
|
|
struct aeap_transport *transport = NULL;
|
|
|
|
if (!strncasecmp(type, "ws", 2)) {
|
|
transport = (struct aeap_transport *)aeap_transport_websocket_create();
|
|
}
|
|
|
|
if (!transport) {
|
|
ast_log(LOG_ERROR, "AEAP transport: failed to create for type '%s'\n", type);
|
|
return NULL;
|
|
}
|
|
|
|
ast_mutex_init(&transport->read_lock);
|
|
ast_mutex_init(&transport->write_lock);
|
|
|
|
transport->connected = 0;
|
|
|
|
return transport;
|
|
}
|
|
|
|
int aeap_transport_connect(struct aeap_transport *transport, const char *url,
|
|
const char *protocol, int timeout)
|
|
{
|
|
int res;
|
|
|
|
SCOPED_MUTEX(rlock, &transport->read_lock);
|
|
SCOPED_MUTEX(wlock, &transport->write_lock);
|
|
|
|
if (aeap_transport_is_connected(transport)) {
|
|
return 0;
|
|
}
|
|
|
|
res = transport->vtable->connect(transport, url, protocol, timeout);
|
|
if (!res) {
|
|
transport->connected = 1;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
struct aeap_transport *aeap_transport_create_and_connect(const char *type,
|
|
const char *url, const char *protocol, int timeout)
|
|
{
|
|
struct aeap_transport *transport = aeap_transport_create(type);
|
|
|
|
if (!transport) {
|
|
return NULL;
|
|
}
|
|
|
|
if (aeap_transport_connect(transport, url, protocol, timeout)) {
|
|
aeap_transport_destroy(transport);
|
|
return NULL;
|
|
}
|
|
|
|
return transport;
|
|
}
|
|
|
|
int aeap_transport_is_connected(struct aeap_transport *transport)
|
|
{
|
|
/*
|
|
* Avoid using a lock to 'read' the 'connected' variable in order to
|
|
* keep things slightly more efficient.
|
|
*/
|
|
return ast_atomic_fetch_add(&transport->connected, 0, __ATOMIC_RELAXED);
|
|
}
|
|
|
|
int aeap_transport_disconnect(struct aeap_transport *transport)
|
|
{
|
|
int res;
|
|
|
|
SCOPED_MUTEX(rlock, &transport->read_lock);
|
|
SCOPED_MUTEX(wlock, &transport->write_lock);
|
|
|
|
if (!aeap_transport_is_connected(transport)) {
|
|
return 0;
|
|
}
|
|
|
|
res = transport->vtable->disconnect(transport);
|
|
|
|
/*
|
|
* Even though the transport is locked here use atomics to set the value of
|
|
* 'connected' since it's possible the variable is being 'read' by another
|
|
* thread via the 'is_connected' call.
|
|
*/
|
|
ast_atomic_fetch_sub(&transport->connected, 1, __ATOMIC_RELAXED);
|
|
|
|
return res;
|
|
}
|
|
|
|
void aeap_transport_destroy(struct aeap_transport *transport)
|
|
{
|
|
if (!transport) {
|
|
return;
|
|
}
|
|
|
|
/* Ensure an orderly disconnect occurs before final destruction */
|
|
aeap_transport_disconnect(transport);
|
|
|
|
transport->vtable->destroy(transport);
|
|
|
|
ast_mutex_destroy(&transport->read_lock);
|
|
ast_mutex_destroy(&transport->write_lock);
|
|
|
|
ast_free(transport);
|
|
}
|
|
|
|
intmax_t aeap_transport_read(struct aeap_transport *transport, void *buf, intmax_t size,
|
|
enum AST_AEAP_DATA_TYPE *rtype)
|
|
{
|
|
SCOPED_MUTEX(lock, &transport->read_lock);
|
|
|
|
if (!aeap_transport_is_connected(transport)) {
|
|
return 0;
|
|
}
|
|
|
|
return transport->vtable->read(transport, buf, size, rtype);
|
|
}
|
|
|
|
intmax_t aeap_transport_write(struct aeap_transport *transport, const void *buf, intmax_t size,
|
|
enum AST_AEAP_DATA_TYPE wtype)
|
|
{
|
|
SCOPED_MUTEX(lock, &transport->write_lock);
|
|
|
|
if (!aeap_transport_is_connected(transport)) {
|
|
return 0;
|
|
}
|
|
|
|
return transport->vtable->write(transport, buf, size, wtype);
|
|
}
|