Add beginnings of session timeouts and limits

Add the timeout value to the Session header for unusual timeout values.

Allow us to configure a limit to the amount of active sessions in a pool. Set a
limit on the amount of retry we do after a sessionid collision.

Add properties to the sessionid and the timeout of a session. Keep track of
creation time and last access time for sessions.
This commit is contained in:
Wim Taymans 2009-02-04 19:52:50 +01:00
parent e789a8fdf3
commit aedd4652f3
5 changed files with 341 additions and 17 deletions

View file

@ -561,8 +561,16 @@ handle_setup_request (GstRTSPClient *client, GstRTSPUrl *uri, GstRTSPMessage *re
gst_rtsp_message_init_response (&response, code, gst_rtsp_status_as_text (code), request);
/* add the new session header for new session ids */
if (need_session)
gst_rtsp_message_add_header (&response, GST_RTSP_HDR_SESSION, session->sessionid);
if (need_session) {
gchar *str;
if (session->timeout != 60)
str = g_strdup_printf ("%s; timeout=%d", session->sessionid, session->timeout);
else
str = g_strdup (session->sessionid);
gst_rtsp_message_take_header (&response, GST_RTSP_HDR_SESSION, str);
}
gst_rtsp_message_add_header (&response, GST_RTSP_HDR_TRANSPORT, trans_str);
g_free (trans_str);

View file

@ -21,6 +21,19 @@
#undef DEBUG
#define DEFAULT_MAX_SESSIONS 0
enum
{
PROP_0,
PROP_MAX_SESSIONS,
PROP_LAST
};
static void gst_rtsp_session_pool_get_property (GObject *object, guint propid,
GValue *value, GParamSpec *pspec);
static void gst_rtsp_session_pool_set_property (GObject *object, guint propid,
const GValue *value, GParamSpec *pspec);
static void gst_rtsp_session_pool_finalize (GObject * object);
static gchar * create_session_id (GstRTSPSessionPool *pool);
@ -34,8 +47,16 @@ gst_rtsp_session_pool_class_init (GstRTSPSessionPoolClass * klass)
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->get_property = gst_rtsp_session_pool_get_property;
gobject_class->set_property = gst_rtsp_session_pool_set_property;
gobject_class->finalize = gst_rtsp_session_pool_finalize;
g_object_class_install_property (gobject_class, PROP_MAX_SESSIONS,
g_param_spec_uint ("max-sessions", "Max Sessions",
"the maximum amount of sessions (0 = unlimited)",
0, G_MAXUINT, DEFAULT_MAX_SESSIONS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
klass->create_session_id = create_session_id;
}
@ -45,6 +66,7 @@ gst_rtsp_session_pool_init (GstRTSPSessionPool * pool)
pool->lock = g_mutex_new ();
pool->sessions = g_hash_table_new_full (g_str_hash, g_str_equal,
NULL, g_object_unref);
pool->max_sessions = DEFAULT_MAX_SESSIONS;
}
static void
@ -58,6 +80,42 @@ gst_rtsp_session_pool_finalize (GObject * object)
G_OBJECT_CLASS (gst_rtsp_session_pool_parent_class)->finalize (object);
}
static void
gst_rtsp_session_pool_get_property (GObject *object, guint propid,
GValue *value, GParamSpec *pspec)
{
GstRTSPSessionPool *pool = GST_RTSP_SESSION_POOL (object);
switch (propid) {
case PROP_MAX_SESSIONS:
g_mutex_lock (pool->lock);
g_value_set_uint (value, pool->max_sessions);
g_mutex_unlock (pool->lock);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propid, pspec);
break;
}
}
static void
gst_rtsp_session_pool_set_property (GObject *object, guint propid,
const GValue *value, GParamSpec *pspec)
{
GstRTSPSessionPool *pool = GST_RTSP_SESSION_POOL (object);
switch (propid) {
case PROP_MAX_SESSIONS:
g_mutex_lock (pool->lock);
pool->max_sessions = g_value_get_uint (value);
g_mutex_unlock (pool->lock);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propid, pspec);
break;
}
}
/**
* gst_rtsp_session_pool_new:
*
@ -75,12 +133,76 @@ gst_rtsp_session_pool_new (void)
return result;
}
/**
* gst_rtsp_session_pool_set_max_sessions:
* @pool: a #GstRTSPSessionPool
* @max: the maximum number of sessions
*
* Configure the maximum allowed number of sessions in @pool to @max.
* A value of 0 means an unlimited amount of sessions.
*/
void
gst_rtsp_session_pool_set_max_sessions (GstRTSPSessionPool *pool, guint max)
{
g_return_if_fail (GST_IS_RTSP_SESSION_POOL (pool));
g_mutex_lock (pool->lock);
pool->max_sessions = max;
g_mutex_unlock (pool->lock);
}
/**
* gst_rtsp_session_pool_get_max_sessions:
* @pool: a #GstRTSPSessionPool
*
* Get the maximum allowed number of sessions in @pool. 0 means an unlimited
* amount of sessions.
*
* Returns: the maximum allowed number of sessions.
*/
guint
gst_rtsp_session_pool_get_max_sessions (GstRTSPSessionPool *pool)
{
guint result;
g_return_val_if_fail (GST_IS_RTSP_SESSION_POOL (pool), 0);
g_mutex_lock (pool->lock);
result = pool->max_sessions;
g_mutex_unlock (pool->lock);
return result;
}
/**
* gst_rtsp_session_pool_get_n_sessions:
* @pool: a #GstRTSPSessionPool
*
* Get the amount of active sessions in @pool.
*
* Returns: the amount of active sessions in @pool.
*/
guint
gst_rtsp_session_pool_get_n_sessions (GstRTSPSessionPool *pool)
{
guint result;
g_return_val_if_fail (GST_IS_RTSP_SESSION_POOL (pool), 0);
g_mutex_lock (pool->lock);
result = g_hash_table_size (pool->sessions);
g_mutex_unlock (pool->lock);
return result;
}
/**
* gst_rtsp_session_pool_find:
* @pool: the pool to search
* @sessionid: the session id
*
* Find the session with @sessionid in @pool.
* Find the session with @sessionid in @pool. The access time of the session
* will be updated with gst_rtsp_session_touch().
*
* Returns: the #GstRTSPSession with @sessionid or %NULL when the session did
* not exist. g_object_unref() after usage.
@ -99,6 +221,9 @@ gst_rtsp_session_pool_find (GstRTSPSessionPool *pool, const gchar *sessionid)
g_object_ref (result);
g_mutex_unlock (pool->lock);
if (result)
gst_rtsp_session_touch (result);
return result;
}
@ -129,11 +254,13 @@ gst_rtsp_session_pool_create (GstRTSPSessionPool *pool)
GstRTSPSession *result = NULL;
GstRTSPSessionPoolClass *klass;
gchar *id = NULL;
guint retry;
g_return_val_if_fail (GST_IS_RTSP_SESSION_POOL (pool), NULL);
klass = GST_RTSP_SESSION_POOL_GET_CLASS (pool);
retry = 0;
do {
/* start by creating a new random session id, we assume that this is random
* enough to not cause a collision, which we will check later */
@ -146,11 +273,19 @@ gst_rtsp_session_pool_create (GstRTSPSessionPool *pool)
goto no_session;
g_mutex_lock (pool->lock);
/* check session limit */
if (pool->max_sessions > 0) {
if (g_hash_table_size (pool->sessions) >= pool->max_sessions)
goto too_many_sessions;
}
/* check if the sessionid existed */
result = g_hash_table_lookup (pool->sessions, id);
if (result) {
/* found, retry with a different session id*/
/* found, retry with a different session id */
result = NULL;
retry++;
if (retry > 100)
goto collision;
}
else {
/* not found, create session and insert it in the pool */
@ -177,6 +312,20 @@ no_session:
g_warning ("can't create session id with GstRTSPSessionPool %p", pool);
return NULL;
}
collision:
{
g_warning ("can't find unique sessionid for GstRTSPSessionPool %p", pool);
g_mutex_unlock (pool->lock);
g_free (id);
return NULL;
}
too_many_sessions:
{
g_warning ("session pool reached max sessions of %d", pool->max_sessions);
g_mutex_unlock (pool->lock);
g_free (id);
return NULL;
}
}
/**
@ -184,20 +333,22 @@ no_session:
* @pool: a #GstRTSPSessionPool
* @sess: a #GstRTSPSession
*
* Remove @sess from @pool and Clean it up.
* Remove @sess from @pool, releasing the ref that the pool has on @sess.
*
* Returns: a new #GstRTSPSession.
* Returns: %TRUE if the session was found and removed.
*/
void
gboolean
gst_rtsp_session_pool_remove (GstRTSPSessionPool *pool, GstRTSPSession *sess)
{
gboolean found;
g_return_if_fail (GST_IS_RTSP_SESSION_POOL (pool));
g_return_if_fail (GST_IS_RTSP_SESSION (sess));
g_return_val_if_fail (GST_IS_RTSP_SESSION_POOL (pool), FALSE);
g_return_val_if_fail (GST_IS_RTSP_SESSION (sess), FALSE);
g_mutex_lock (pool->lock);
found = g_hash_table_remove (pool->sessions, sess->sessionid);
g_mutex_unlock (pool->lock);
return found;
}

View file

@ -40,7 +40,7 @@ typedef struct _GstRTSPSessionPoolClass GstRTSPSessionPoolClass;
/**
* GstRTSPSessionPool:
*
* @max_sessions: the maximum number of sessions.
* @lock: locking the session hashtable
* @session: hashtable of sessions indexed by the session id.
*
@ -50,6 +50,8 @@ typedef struct _GstRTSPSessionPoolClass GstRTSPSessionPoolClass;
struct _GstRTSPSessionPool {
GObject parent;
guint max_sessions;
GMutex *lock;
GHashTable *sessions;
};
@ -57,7 +59,7 @@ struct _GstRTSPSessionPool {
/**
* GstRTSPSessionPoolClass:
* @create_session_id: create a new random session id. Subclasses can create
* custom session ids and should not check if the session exists.
* custom session ids and should not check if the session exists.
*/
struct _GstRTSPSessionPoolClass {
GObjectClass parent_class;
@ -67,12 +69,20 @@ struct _GstRTSPSessionPoolClass {
GType gst_rtsp_session_pool_get_type (void);
/* creating a session pool */
GstRTSPSessionPool * gst_rtsp_session_pool_new (void);
/* counting sessionss */
void gst_rtsp_session_pool_set_max_sessions (GstRTSPSessionPool *pool, guint max);
guint gst_rtsp_session_pool_get_max_sessions (GstRTSPSessionPool *pool);
guint gst_rtsp_session_pool_get_n_sessions (GstRTSPSessionPool *pool);
/* managing sessions */
GstRTSPSession * gst_rtsp_session_pool_create (GstRTSPSessionPool *pool);
GstRTSPSession * gst_rtsp_session_pool_find (GstRTSPSessionPool *pool,
const gchar *sessionid);
GstRTSPSession * gst_rtsp_session_pool_create (GstRTSPSessionPool *pool);
void gst_rtsp_session_pool_remove (GstRTSPSessionPool *pool,
gboolean gst_rtsp_session_pool_remove (GstRTSPSessionPool *pool,
GstRTSPSession *sess);
G_END_DECLS

View file

@ -22,6 +22,20 @@
#undef DEBUG
#define DEFAULT_TIMEOUT 60
enum
{
PROP_0,
PROP_SESSIONID,
PROP_TIMEOUT,
PROP_LAST
};
static void gst_rtsp_session_get_property (GObject *object, guint propid,
GValue *value, GParamSpec *pspec);
static void gst_rtsp_session_set_property (GObject *object, guint propid,
const GValue *value, GParamSpec *pspec);
static void gst_rtsp_session_finalize (GObject * obj);
G_DEFINE_TYPE (GstRTSPSession, gst_rtsp_session, G_TYPE_OBJECT);
@ -33,12 +47,26 @@ gst_rtsp_session_class_init (GstRTSPSessionClass * klass)
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->get_property = gst_rtsp_session_get_property;
gobject_class->set_property = gst_rtsp_session_set_property;
gobject_class->finalize = gst_rtsp_session_finalize;
g_object_class_install_property (gobject_class, PROP_SESSIONID,
g_param_spec_string ("sessionid", "Sessionid", "the session id",
NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_TIMEOUT,
g_param_spec_uint ("timeout", "timeout", "the timeout of the session (0 = never)",
0, G_MAXUINT, DEFAULT_TIMEOUT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_rtsp_session_init (GstRTSPSession * session)
{
session->timeout = DEFAULT_TIMEOUT;
g_get_current_time (&session->create_time);
gst_rtsp_session_touch (session);
}
static void
@ -100,6 +128,43 @@ gst_rtsp_session_finalize (GObject * obj)
G_OBJECT_CLASS (gst_rtsp_session_parent_class)->finalize (obj);
}
static void
gst_rtsp_session_get_property (GObject *object, guint propid,
GValue *value, GParamSpec *pspec)
{
GstRTSPSession *session = GST_RTSP_SESSION (object);
switch (propid) {
case PROP_SESSIONID:
g_value_set_string (value, session->sessionid);
break;
case PROP_TIMEOUT:
g_value_set_uint (value, gst_rtsp_session_get_timeout (session));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propid, pspec);
}
}
static void
gst_rtsp_session_set_property (GObject *object, guint propid,
const GValue *value, GParamSpec *pspec)
{
GstRTSPSession *session = GST_RTSP_SESSION (object);
switch (propid) {
case PROP_SESSIONID:
g_free (session->sessionid);
session->sessionid = g_value_dup_string (value);
break;
case PROP_TIMEOUT:
gst_rtsp_session_set_timeout (session, g_value_get_uint (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propid, pspec);
}
}
/**
* gst_rtsp_session_manage_media:
* @sess: a #GstRTSPSession
@ -262,12 +327,76 @@ gst_rtsp_session_new (const gchar *sessionid)
{
GstRTSPSession *result;
result = g_object_new (GST_TYPE_RTSP_SESSION, NULL);
result->sessionid = g_strdup (sessionid);
g_return_val_if_fail (sessionid != NULL, NULL);
result = g_object_new (GST_TYPE_RTSP_SESSION, "sessionid", sessionid, NULL);
return result;
}
/**
* gst_rtsp_session_get_sessionid:
* @session: a #GstRTSPSession
*
* Get the sessionid of @session.
*
* Returns: the sessionid of @session. The value remains valid as long as
* @session is alive.
*/
const gchar *
gst_rtsp_session_get_sessionid (GstRTSPSession *session)
{
g_return_val_if_fail (GST_IS_RTSP_SESSION (session), NULL);
return session->sessionid;
}
/**
* gst_rtsp_session_set_timeout:
* @session: a #GstRTSPSession
* @timeout: the new timeout
*
* Configure @session for a timeout of @timeout seconds. The session will be
* cleaned up when there is no activity for @timeout seconds.
*/
void
gst_rtsp_session_set_timeout (GstRTSPSession *session, guint timeout)
{
g_return_if_fail (GST_IS_RTSP_SESSION (session));
session->timeout = timeout;
}
/**
* gst_rtsp_session_get_timeout:
* @session: a #GstRTSPSession
*
* Get the timeout value of @session.
*
* Returns: the timeout of @session in seconds.
*/
guint
gst_rtsp_session_get_timeout (GstRTSPSession *session)
{
g_return_val_if_fail (GST_IS_RTSP_SESSION (session), 0);
return session->timeout;
}
/**
* gst_rtsp_session_touch:
* @session: a #GstRTSPSession
*
* Update the last_access time of the session to the current time.
*/
void
gst_rtsp_session_touch (GstRTSPSession *session)
{
g_return_if_fail (GST_IS_RTSP_SESSION (session));
g_get_current_time (&session->last_access);
}
/**
* gst_rtsp_session_stream_init_udp:
* @stream: a #GstRTSPSessionStream
@ -284,6 +413,9 @@ gst_rtsp_session_stream_set_transport (GstRTSPSessionStream *stream,
{
GstRTSPTransport *st;
g_return_val_if_fail (stream != NULL, NULL);
g_return_val_if_fail (ct != NULL, NULL);
/* prepare the server transport */
gst_rtsp_transport_new (&st);
@ -316,6 +448,8 @@ gst_rtsp_session_media_play (GstRTSPSessionMedia *media)
{
gboolean ret;
g_return_val_if_fail (media != NULL, FALSE);
ret = gst_rtsp_media_play (media->media, media->streams);
return ret;
@ -334,6 +468,8 @@ gst_rtsp_session_media_pause (GstRTSPSessionMedia *media)
{
gboolean ret;
g_return_val_if_fail (media != NULL, FALSE);
ret = gst_rtsp_media_pause (media->media, media->streams);
return ret;
@ -353,6 +489,8 @@ gst_rtsp_session_media_stop (GstRTSPSessionMedia *media)
{
gboolean ret;
g_return_val_if_fail (media != NULL, FALSE);
ret = gst_rtsp_media_stop (media->media, media->streams);
return ret;

View file

@ -81,16 +81,25 @@ struct _GstRTSPSessionMedia
/**
* GstRTSPSession:
* @sessionid: the session id of the session
* @timeout: the timeout of the session
* @create_time: the time when the session was created
* @last_access: the time the session was last accessed
* @media: a list of #GstRTSPSessionMedia managed in this session
*
* Session information kept by the server for a specific client.
* One client session, identified with a session id, can handle multiple medias
* identified with the media object.
* identified with the url of a media.
*/
struct _GstRTSPSession {
GObject parent;
gchar *sessionid;
guint timeout;
GTimeVal create_time;
GTimeVal last_access;
GList *medias;
};
@ -103,6 +112,14 @@ GType gst_rtsp_session_get_type (void);
/* create a new session */
GstRTSPSession * gst_rtsp_session_new (const gchar *sessionid);
const gchar * gst_rtsp_session_get_sessionid (GstRTSPSession *session);
void gst_rtsp_session_set_timeout (GstRTSPSession *session, guint timeout);
guint gst_rtsp_session_get_timeout (GstRTSPSession *session);
/* touch the session, update last_access */
void gst_rtsp_session_touch (GstRTSPSession *session);
/* handle media in a session */
GstRTSPSessionMedia * gst_rtsp_session_manage_media (GstRTSPSession *sess,
const GstRTSPUrl *uri,