static void
on_address_next (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
CockpitStream *self = user_data;
GSocketConnection *connection;
GSocketAddress *address;
GError *error = NULL;
GSocket *sock;
address = g_socket_address_enumerator_next_finish (G_SOCKET_ADDRESS_ENUMERATOR (object),
result, &error);
if (error)
{
set_problem_from_error (self, "couldn't resolve", error);
g_error_free (error);
close_immediately (self, NULL);
}
else if (address)
{
sock = g_socket_new (g_socket_address_get_family (address), G_SOCKET_TYPE_STREAM, 0, &error);
if (sock)
{
g_socket_set_blocking (sock, FALSE);
connection = g_socket_connection_factory_create_connection (sock);
g_object_unref (sock);
g_socket_connection_connect_async (connection, address, NULL,
on_socket_connect, g_object_ref (self));
}
if (error)
{
g_debug ("%s: couldn't open socket: %s", self->priv->name, error->message);
g_clear_error (&self->priv->connect_error);
self->priv->connect_error = error;
}
g_object_unref (address);
}
else
{
if (self->priv->connect_error)
{
set_problem_from_error (self, "couldn't connect", self->priv->connect_error);
close_immediately (self, NULL);
}
else
{
g_message ("%s: no addresses found", self->priv->name);
close_immediately (self, "not-found");
}
}
g_object_unref (self);
}
/**
* g_socket_listener_add_address:
* @listener: a #GSocketListener
* @address: a #GSocketAddress
* @type: a #GSocketType
* @protocol: a #GSocketProtocol
* @source_object: (allow-none): Optional #GObject identifying this source
* @effective_address: (out) (allow-none): location to store the address that was bound to, or %NULL.
* @error: #GError for error reporting, or %NULL to ignore.
*
* Creates a socket of type @type and protocol @protocol, binds
* it to @address and adds it to the set of sockets we're accepting
* sockets from.
*
* Note that adding an IPv6 address, depending on the platform,
* may or may not result in a listener that also accepts IPv4
* connections. For more deterministic behavior, see
* g_socket_listener_add_inet_port().
*
* @source_object will be passed out in the various calls
* to accept to identify this particular source, which is
* useful if you're listening on multiple addresses and do
* different things depending on what address is connected to.
*
* If successful and @effective_address is non-%NULL then it will
* be set to the address that the binding actually occurred at. This
* is helpful for determining the port number that was used for when
* requesting a binding to port 0 (ie: "any port"). This address, if
* requested, belongs to the caller and must be freed.
*
* Returns: %TRUE on success, %FALSE on error.
*
* Since: 2.22
*/
gboolean
g_socket_listener_add_address (GSocketListener *listener,
GSocketAddress *address,
GSocketType type,
GSocketProtocol protocol,
GObject *source_object,
GSocketAddress **effective_address,
GError **error)
{
GSocketAddress *local_address;
GSocketFamily family;
GSocket *socket;
if (!check_listener (listener, error))
return FALSE;
family = g_socket_address_get_family (address);
socket = g_socket_new (family, type, protocol, error);
if (socket == NULL)
return FALSE;
g_socket_set_listen_backlog (socket, listener->priv->listen_backlog);
if (!g_socket_bind (socket, address, TRUE, error) ||
!g_socket_listen (socket, error))
{
g_object_unref (socket);
return FALSE;
}
local_address = NULL;
if (effective_address)
{
local_address = g_socket_get_local_address (socket, error);
if (local_address == NULL)
{
g_object_unref (socket);
return FALSE;
}
}
if (!g_socket_listener_add_socket (listener, socket,
source_object,
error))
{
if (local_address)
g_object_unref (local_address);
g_object_unref (socket);
return FALSE;
}
if (effective_address)
*effective_address = local_address;
g_object_unref (socket); /* add_socket refs this */
return TRUE;
}
static gboolean
gst_multiudpsink_configure_client (GstMultiUDPSink * sink,
GstUDPClient * client)
{
GInetSocketAddress *saddr = G_INET_SOCKET_ADDRESS (client->addr);
GInetAddress *addr = g_inet_socket_address_get_address (saddr);
GSocketFamily family = g_socket_address_get_family (G_SOCKET_ADDRESS (saddr));
GSocket *socket;
GError *err = NULL;
GST_DEBUG_OBJECT (sink, "configuring client %p", client);
if (family == G_SOCKET_FAMILY_IPV6 && !sink->used_socket_v6)
goto invalid_family;
/* Select socket to send from for this address */
if (family == G_SOCKET_FAMILY_IPV6 || !sink->used_socket)
socket = sink->used_socket_v6;
else
socket = sink->used_socket;
if (g_inet_address_get_is_multicast (addr)) {
GST_DEBUG_OBJECT (sink, "we have a multicast client %p", client);
if (sink->auto_multicast) {
GST_DEBUG_OBJECT (sink, "autojoining group");
if (!g_socket_join_multicast_group (socket, addr, FALSE,
sink->multi_iface, &err))
goto join_group_failed;
}
GST_DEBUG_OBJECT (sink, "setting loop to %d", sink->loop);
g_socket_set_multicast_loopback (socket, sink->loop);
GST_DEBUG_OBJECT (sink, "setting ttl to %d", sink->ttl_mc);
g_socket_set_multicast_ttl (socket, sink->ttl_mc);
} else {
GST_DEBUG_OBJECT (sink, "setting unicast ttl to %d", sink->ttl);
g_socket_set_ttl (socket, sink->ttl);
}
return TRUE;
/* ERRORS */
join_group_failed:
{
gst_multiudpsink_stop (GST_BASE_SINK (sink));
GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL),
("Could not join multicast group: %s",
err ? err->message : "unknown reason"));
g_clear_error (&err);
return FALSE;
}
invalid_family:
{
gst_multiudpsink_stop (GST_BASE_SINK (sink));
GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL),
("Invalid address family (got %d)", family));
return FALSE;
}
}
static GSocket *
create_socket (GSocketClient *client,
GSocketAddress *dest_address,
GError **error)
{
GSocketFamily family;
GSocket *socket;
family = client->priv->family;
if (family == G_SOCKET_FAMILY_INVALID &&
client->priv->local_address != NULL)
family = g_socket_address_get_family (client->priv->local_address);
if (family == G_SOCKET_FAMILY_INVALID)
family = g_socket_address_get_family (dest_address);
socket = g_socket_new (family,
client->priv->type,
client->priv->protocol,
error);
if (socket == NULL)
return NULL;
if (client->priv->local_address)
{
if (!g_socket_bind (socket,
client->priv->local_address,
FALSE,
error))
{
g_object_unref (socket);
return NULL;
}
}
if (client->priv->timeout)
g_socket_set_timeout (socket, client->priv->timeout);
return socket;
}
static gboolean
kms_sctp_connection_create_socket (KmsSCTPConnection * conn, gchar * host,
gint port, GCancellable * cancellable, GError ** err)
{
GInetAddress *addr;
/* look up name if we need to */
addr = g_inet_address_new_from_string (host);
if (addr == NULL) {
GResolver *resolver;
GList *results;
resolver = g_resolver_get_default ();
results = g_resolver_lookup_by_name (resolver, host, cancellable, err);
if (results == NULL) {
g_object_unref (resolver);
return FALSE;
}
addr = G_INET_ADDRESS (g_object_ref (results->data));
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
if (G_UNLIKELY (GST_LEVEL_DEBUG <= _gst_debug_min)) {
gchar *ip = g_inet_address_to_string (addr);
GST_DEBUG ("IP address for host %s is %s", host, ip);
g_free (ip);
}
conn->saddr = g_inet_socket_address_new (addr, port);
g_object_unref (addr);
conn->socket = g_socket_new (g_socket_address_get_family (conn->saddr),
G_SOCKET_TYPE_STREAM, G_SOCKET_PROTOCOL_SCTP, err);
if (conn->socket == NULL) {
g_clear_object (&conn->saddr);
return FALSE;
}
/* create socket */
GST_DEBUG ("created SCTP socket for %s", host);
return TRUE;
}
/**
* g_vfs_ftp_connection_listen_data_connection:
* @conn: a connection
* @error: %NULL or location to take potential errors
*
* Initiates a listening socket that the FTP server can connect to. To accept
* connections and initialize data transfers, use
* g_vfs_ftp_connection_accept_data_connection().
* This function supports what is known as "active FTP", while
* g_vfs_ftp_connection_open_data_connection() is to be used for "passive FTP".
*
* Returns: the actual address the socket is listening on or %NULL on error
**/
GSocketAddress *
g_vfs_ftp_connection_listen_data_connection (GVfsFtpConnection *conn,
GError ** error)
{
GSocketAddress *local, *addr;
g_return_val_if_fail (conn != NULL, NULL);
g_return_val_if_fail (conn->data == NULL, NULL);
g_vfs_ftp_connection_stop_listening (conn);
local = g_socket_connection_get_local_address (conn->connection, error);
if (local == NULL)
return NULL;
conn->listen_socket = g_socket_new (g_socket_address_get_family (local),
G_SOCKET_TYPE_STREAM,
G_SOCKET_PROTOCOL_TCP,
error);
if (conn->listen_socket == NULL)
return NULL;
g_assert (G_IS_INET_SOCKET_ADDRESS (local));
addr = g_inet_socket_address_new (g_inet_socket_address_get_address (G_INET_SOCKET_ADDRESS (local)), 0);
g_object_unref (local);
if (!g_socket_bind (conn->listen_socket, addr, TRUE, error) ||
!g_socket_listen (conn->listen_socket, error) ||
!(local = g_socket_get_local_address (conn->listen_socket, error)))
{
g_object_unref (addr);
g_vfs_ftp_connection_stop_listening (conn);
return NULL;
}
g_object_unref (addr);
return local;
}
/* create a socket for sending to remote machine */
static void
gst_sctp_base_sink_create_socket (GstSCTPBaseSink * self)
{
GSocketAddress *saddr;
GResolver *resolver;
GInetAddress *addr;
GError *err = NULL;
if (GST_OBJECT_FLAG_IS_SET (self, GST_SCTP_BASE_SINK_OPEN))
return;
/* look up name if we need to */
addr = g_inet_address_new_from_string (self->priv->host);
if (addr == NULL) {
GList *results;
resolver = g_resolver_get_default ();
results = g_resolver_lookup_by_name (resolver, self->priv->host,
self->priv->cancellable, &err);
if (results == NULL)
goto name_resolve;
addr = G_INET_ADDRESS (g_object_ref (results->data));
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
if (G_UNLIKELY (GST_LEVEL_DEBUG <= _gst_debug_min)) {
gchar *ip = g_inet_address_to_string (addr);
GST_DEBUG_OBJECT (self, "IP address for host %s is %s", self->priv->host,
ip);
g_free (ip);
}
saddr = g_inet_socket_address_new (addr, self->priv->port);
g_object_unref (addr);
/* create sending client socket */
GST_DEBUG_OBJECT (self, "opening sending client socket to %s:%d",
self->priv->host, self->priv->port);
self->priv->socket = g_socket_new (g_socket_address_get_family (saddr),
G_SOCKET_TYPE_STREAM, G_SOCKET_PROTOCOL_SCTP, &err);
if (self->priv->socket == NULL)
goto no_socket;
#if defined (SCTP_INITMSG)
{
struct sctp_initmsg initmsg;
memset (&initmsg, 0, sizeof (initmsg));
initmsg.sinit_num_ostreams = self->priv->num_ostreams;
initmsg.sinit_max_instreams = self->priv->max_istreams;
if (setsockopt (g_socket_get_fd (self->priv->socket), IPPROTO_SCTP,
SCTP_INITMSG, &initmsg, sizeof (initmsg)) < 0)
GST_ELEMENT_WARNING (self, RESOURCE, SETTINGS, (NULL),
("Could not configure SCTP socket: %s (%d)", g_strerror (errno),
errno));
}
#else
GST_WARNING_OBJECT (self, "don't know how to configure the SCTP initiation "
"parameters on this OS.");
#endif
GST_DEBUG_OBJECT (self, "opened sending client socket");
/* connect to server */
if (!g_socket_connect (self->priv->socket, saddr, self->priv->cancellable,
&err))
goto connect_failed;
g_object_unref (saddr);
GST_OBJECT_FLAG_SET (self, GST_SCTP_BASE_SINK_OPEN);
GST_DEBUG ("Created sctp socket");
return;
no_socket:
{
GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ, (NULL),
("Failed to create socket: %s", err->message));
g_clear_error (&err);
g_object_unref (saddr);
return;
}
name_resolve:
{
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
GST_DEBUG_OBJECT (self, "Cancelled name resolval");
} else {
GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ, (NULL),
("Failed to resolve host '%s': %s", self->priv->host, err->message));
}
g_clear_error (&err);
g_object_unref (resolver);
return;
}
connect_failed:
{
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
GST_DEBUG_OBJECT (self, "Cancelled connecting");
} else {
GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ, (NULL),
("Failed to connect to host '%s:%d': %s", self->priv->host,
self->priv->port, err->message));
}
g_clear_error (&err);
g_object_unref (saddr);
/* pretend we opened ok for proper cleanup to happen */
GST_OBJECT_FLAG_SET (self, GST_SCTP_BASE_SINK_OPEN);
gst_sctp_base_sink_destroy_socket (self);
return;
}
}
static GSocket *
gst_switch_server_listen (GstSwitchServer *srv, gint port,
gint *bound_port)
{
GError *err = NULL;
GInetAddress *addr;
GSocket *socket = NULL;
GSocketAddress *saddr;
GResolver *resolver;
gchar *ip;
*bound_port = 0;
/* look up name if we need to */
addr = g_inet_address_new_from_string (srv->host);
if (!addr) {
GList *results;
resolver = g_resolver_get_default ();
results = g_resolver_lookup_by_name (resolver, srv->host,
srv->cancellable, &err);
if (!results)
goto resolve_no_name;
addr = G_INET_ADDRESS (g_object_ref (results->data));
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
ip = g_inet_address_to_string (addr);
saddr = g_inet_socket_address_new (addr, port);
g_object_unref (addr);
/* create the server listener socket */
socket = g_socket_new (g_socket_address_get_family (saddr),
G_SOCKET_TYPE_STREAM, G_SOCKET_PROTOCOL_TCP, &err);
if (!socket)
goto socket_new_failed;
/* bind it */
if (!g_socket_bind (socket, saddr, TRUE, &err))
goto socket_bind_failed;
g_object_unref (saddr);
/* listen on the socket */
g_socket_set_listen_backlog (socket, GST_SWITCH_SERVER_LISTEN_BACKLOG);
if (!g_socket_listen (socket, &err))
goto socket_listen_failed;
if (port == 0) {
saddr = g_socket_get_local_address (socket, NULL);
*bound_port = g_inet_socket_address_get_port ((GInetSocketAddress *) saddr);
g_object_unref (saddr);
} else {
*bound_port = port;
}
INFO ("Listening on %s (%s:%d)", srv->host, ip, *bound_port);
g_free (ip);
//g_atomic_int_set (&srv->bound_port, bound_port);
//g_object_notify (G_OBJECT (src), "bound-port");
return socket;
/* Errors Handling */
resolve_no_name:
{
ERROR ("resolve: %s", err->message);
g_object_unref (resolver);
g_object_unref (addr);
return NULL;
}
socket_new_failed:
{
ERROR ("new socket: %s", err->message);
g_clear_error (&err);
g_object_unref (saddr);
g_free (ip);
return NULL;
}
socket_bind_failed:
{
ERROR ("bind socket: %s", err->message);
g_clear_error (&err);
g_object_unref (saddr);
g_free (ip);
return NULL;
}
socket_listen_failed:
{
ERROR ("listen socket: %s", err->message);
g_clear_error (&err);
g_object_unref (saddr);
g_free (ip);
return NULL;
}
}
static gboolean
gst_tcp_mix_src_listen (GstTCPMixSrc * src, GstTCPMixSrcPad * pad)
{
GError *err = NULL;
GInetAddress *addr;
GSocketAddress *saddr;
GResolver *resolver;
gint bound_port = 0;
gchar *ip;
/* look up name if we need to */
addr = g_inet_address_new_from_string (src->host);
if (!addr) {
GList *results;
resolver = g_resolver_get_default ();
results = g_resolver_lookup_by_name (resolver, src->host,
src->cancellable, &err);
if (!results)
goto resolve_no_name;
addr = G_INET_ADDRESS (g_object_ref (results->data));
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
/* get IP address */
ip = g_inet_address_to_string (addr);
saddr = g_inet_socket_address_new (addr, src->server_port);
g_object_unref (addr);
/* create the server listener socket */
src->server_socket = g_socket_new (g_socket_address_get_family (saddr),
G_SOCKET_TYPE_STREAM, G_SOCKET_PROTOCOL_TCP, &err);
if (!src->server_socket)
goto socket_new_failed;
/* bind it */
if (!g_socket_bind (src->server_socket, saddr, TRUE, &err))
goto socket_bind_failed;
g_object_unref (saddr);
g_socket_set_listen_backlog (src->server_socket, TCP_BACKLOG);
if (!g_socket_listen (src->server_socket, &err))
goto socket_listen_failed;
GST_OBJECT_FLAG_SET (src, GST_TCP_MIX_SRC_OPEN);
if (src->server_port == 0) {
saddr = g_socket_get_local_address (src->server_socket, NULL);
bound_port = g_inet_socket_address_get_port ((GInetSocketAddress *) saddr);
g_object_unref (saddr);
} else {
bound_port = src->server_port;
}
GST_DEBUG_OBJECT (src, "Listening on %s (%s:%d)", src->host, ip, bound_port);
g_free (ip);
g_atomic_int_set (&src->bound_port, bound_port);
g_object_notify (G_OBJECT (src), "bound-port");
return TRUE;
/* Handling Errors */
resolve_no_name:
{
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
GST_DEBUG_OBJECT (src, "Cancelled name resolval");
} else {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Failed to resolve host '%s': %s", src->host, err->message));
}
g_clear_error (&err);
g_object_unref (resolver);
return FALSE;
}
socket_new_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Failed to create socket: %s", err->message));
g_clear_error (&err);
g_object_unref (saddr);
return FALSE;
}
socket_bind_failed:
{
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
GST_DEBUG_OBJECT (src, "Cancelled binding");
} else {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Failed to bind on host '%s:%d': %s", src->host, src->server_port,
err->message));
}
g_clear_error (&err);
g_object_unref (saddr);
gst_tcp_mix_src_stop (src, pad);
return FALSE;
}
socket_listen_failed:
{
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
GST_DEBUG_OBJECT (src, "Cancelled listening");
} else {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Failed to listen on host '%s:%d': %s", src->host,
src->server_port, err->message));
}
g_clear_error (&err);
gst_tcp_mix_src_stop (src, pad);
return FALSE;
}
}
/* create a socket for sending to remote machine */
static gboolean
gst_multiudpsink_start (GstBaseSink * bsink)
{
GstMultiUDPSink *sink;
GList *clients;
GstUDPClient *client;
GError *err = NULL;
sink = GST_MULTIUDPSINK (bsink);
sink->external_socket = FALSE;
if (sink->socket) {
GST_DEBUG_OBJECT (sink, "using configured socket");
if (g_socket_get_family (sink->socket) == G_SOCKET_FAMILY_IPV6) {
sink->used_socket_v6 = G_SOCKET (g_object_ref (sink->socket));
sink->external_socket = TRUE;
} else {
sink->used_socket = G_SOCKET (g_object_ref (sink->socket));
sink->external_socket = TRUE;
}
}
if (sink->socket_v6) {
GST_DEBUG_OBJECT (sink, "using configured IPv6 socket");
g_return_val_if_fail (g_socket_get_family (sink->socket) !=
G_SOCKET_FAMILY_IPV6, FALSE);
if (sink->used_socket_v6 && sink->used_socket_v6 != sink->socket_v6) {
GST_ERROR_OBJECT (sink,
"Provided different IPv6 sockets in socket and socket-v6 properties");
return FALSE;
}
sink->used_socket_v6 = G_SOCKET (g_object_ref (sink->socket_v6));
sink->external_socket = TRUE;
}
if (!sink->used_socket && !sink->used_socket_v6) {
GSocketAddress *bind_addr;
GInetAddress *bind_iaddr;
if (sink->bind_address) {
GSocketFamily family;
bind_iaddr = g_inet_address_new_from_string (sink->bind_address);
if (!bind_iaddr) {
GList *results;
GResolver *resolver;
resolver = g_resolver_get_default ();
results =
g_resolver_lookup_by_name (resolver, sink->bind_address,
sink->cancellable, &err);
if (!results) {
g_object_unref (resolver);
goto name_resolve;
}
bind_iaddr = G_INET_ADDRESS (g_object_ref (results->data));
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
bind_addr = g_inet_socket_address_new (bind_iaddr, sink->bind_port);
g_object_unref (bind_iaddr);
family = g_socket_address_get_family (G_SOCKET_ADDRESS (bind_addr));
if ((sink->used_socket =
g_socket_new (family, G_SOCKET_TYPE_DATAGRAM,
G_SOCKET_PROTOCOL_UDP, &err)) == NULL) {
g_object_unref (bind_addr);
goto no_socket;
}
g_socket_bind (sink->used_socket, bind_addr, TRUE, &err);
if (err != NULL)
goto bind_error;
} else {
/* create sender sockets if none available */
if ((sink->used_socket = g_socket_new (G_SOCKET_FAMILY_IPV4,
G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, &err)) == NULL)
goto no_socket;
bind_iaddr = g_inet_address_new_any (G_SOCKET_FAMILY_IPV4);
bind_addr = g_inet_socket_address_new (bind_iaddr, sink->bind_port);
g_socket_bind (sink->used_socket, bind_addr, TRUE, &err);
g_object_unref (bind_addr);
g_object_unref (bind_iaddr);
if (err != NULL)
goto bind_error;
if ((sink->used_socket_v6 = g_socket_new (G_SOCKET_FAMILY_IPV6,
G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP,
&err)) == NULL) {
GST_INFO_OBJECT (sink, "Failed to create IPv6 socket: %s",
err->message);
g_clear_error (&err);
} else {
bind_iaddr = g_inet_address_new_any (G_SOCKET_FAMILY_IPV6);
bind_addr = g_inet_socket_address_new (bind_iaddr, sink->bind_port);
g_socket_bind (sink->used_socket_v6, bind_addr, TRUE, &err);
g_object_unref (bind_addr);
g_object_unref (bind_iaddr);
if (err != NULL)
goto bind_error;
}
}
}
#ifdef SO_SNDBUF
{
socklen_t len;
gint sndsize, ret;
len = sizeof (sndsize);
if (sink->buffer_size != 0) {
sndsize = sink->buffer_size;
GST_DEBUG_OBJECT (sink, "setting udp buffer of %d bytes", sndsize);
/* set buffer size, Note that on Linux this is typically limited to a
* maximum of around 100K. Also a minimum of 128 bytes is required on
* Linux. */
if (sink->used_socket) {
ret =
setsockopt (g_socket_get_fd (sink->used_socket), SOL_SOCKET,
SO_SNDBUF, (void *) &sndsize, len);
if (ret != 0) {
GST_ELEMENT_WARNING (sink, RESOURCE, SETTINGS, (NULL),
("Could not create a buffer of requested %d bytes, %d: %s",
sndsize, ret, g_strerror (errno)));
}
}
if (sink->used_socket_v6) {
ret =
setsockopt (g_socket_get_fd (sink->used_socket_v6), SOL_SOCKET,
SO_SNDBUF, (void *) &sndsize, len);
if (ret != 0) {
GST_ELEMENT_WARNING (sink, RESOURCE, SETTINGS, (NULL),
("Could not create a buffer of requested %d bytes, %d: %s",
sndsize, ret, g_strerror (errno)));
}
}
}
/* read the value of the receive buffer. Note that on linux this returns 2x the
* value we set because the kernel allocates extra memory for metadata.
* The default on Linux is about 100K (which is about 50K without metadata) */
if (sink->used_socket) {
ret =
getsockopt (g_socket_get_fd (sink->used_socket), SOL_SOCKET,
SO_SNDBUF, (void *) &sndsize, &len);
if (ret == 0)
GST_DEBUG_OBJECT (sink, "have UDP buffer of %d bytes", sndsize);
else
GST_DEBUG_OBJECT (sink, "could not get UDP buffer size");
}
if (sink->used_socket_v6) {
ret =
getsockopt (g_socket_get_fd (sink->used_socket_v6), SOL_SOCKET,
SO_SNDBUF, (void *) &sndsize, &len);
if (ret == 0)
GST_DEBUG_OBJECT (sink, "have UDPv6 buffer of %d bytes", sndsize);
else
GST_DEBUG_OBJECT (sink, "could not get UDPv6 buffer size");
}
}
#endif
#ifdef SO_BINDTODEVICE
if (sink->multi_iface) {
if (sink->used_socket) {
setsockopt (g_socket_get_fd (sink->used_socket), SOL_SOCKET,
SO_BINDTODEVICE, sink->multi_iface, strlen (sink->multi_iface));
}
if (sink->used_socket_v6) {
setsockopt (g_socket_get_fd (sink->used_socket_v6), SOL_SOCKET,
SO_BINDTODEVICE, sink->multi_iface, strlen (sink->multi_iface));
}
}
#endif
if (sink->used_socket)
g_socket_set_broadcast (sink->used_socket, TRUE);
if (sink->used_socket_v6)
g_socket_set_broadcast (sink->used_socket_v6, TRUE);
sink->bytes_to_serve = 0;
sink->bytes_served = 0;
gst_multiudpsink_setup_qos_dscp (sink, sink->used_socket);
gst_multiudpsink_setup_qos_dscp (sink, sink->used_socket_v6);
/* look for multicast clients and join multicast groups appropriately
set also ttl and multicast loopback delivery appropriately */
for (clients = sink->clients; clients; clients = g_list_next (clients)) {
client = (GstUDPClient *) clients->data;
if (!gst_multiudpsink_configure_client (sink, client))
return FALSE;
}
return TRUE;
/* ERRORS */
no_socket:
{
GST_ELEMENT_ERROR (sink, RESOURCE, FAILED, (NULL),
("Could not create socket: %s", err->message));
g_clear_error (&err);
return FALSE;
}
bind_error:
{
GST_ELEMENT_ERROR (sink, RESOURCE, FAILED, (NULL),
("Failed to bind socket: %s", err->message));
g_clear_error (&err);
return FALSE;
}
name_resolve:
{
GST_ELEMENT_ERROR (sink, RESOURCE, FAILED, (NULL),
("Failed to resolve bind address %s: %s", sink->bind_address,
err->message));
g_clear_error (&err);
return FALSE;
}
}
static GstFlowReturn
gst_multiudpsink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstMultiUDPSink *sink;
GList *clients;
GOutputVector *vec;
GstMapInfo *map;
guint n_mem, i;
gsize size;
GstMemory *mem;
gint num, no_clients;
GError *err = NULL;
sink = GST_MULTIUDPSINK (bsink);
n_mem = gst_buffer_n_memory (buffer);
if (n_mem == 0)
goto no_data;
/* allocated on the stack, the max number of memory blocks is limited so this
* should not cause stack overflows */
vec = sink->vec;
map = sink->map;
size = 0;
for (i = 0; i < n_mem; i++) {
mem = gst_buffer_get_memory (buffer, i);
gst_memory_map (mem, &map[i], GST_MAP_READ);
vec[i].buffer = map[i].data;
vec[i].size = map[i].size;
size += map[i].size;
}
sink->bytes_to_serve += size;
/* grab lock while iterating and sending to clients, this should be
* fast as UDP never blocks */
g_mutex_lock (&sink->client_lock);
GST_LOG_OBJECT (bsink, "about to send %" G_GSIZE_FORMAT " bytes in %u blocks",
size, n_mem);
no_clients = 0;
num = 0;
for (clients = sink->clients; clients; clients = g_list_next (clients)) {
GstUDPClient *client;
GSocket *socket;
GSocketFamily family;
gint count;
client = (GstUDPClient *) clients->data;
no_clients++;
GST_LOG_OBJECT (sink, "sending %" G_GSIZE_FORMAT " bytes to client %p",
size, client);
family = g_socket_address_get_family (G_SOCKET_ADDRESS (client->addr));
/* Select socket to send from for this address */
if (family == G_SOCKET_FAMILY_IPV6 || !sink->used_socket)
socket = sink->used_socket_v6;
else
socket = sink->used_socket;
count = sink->send_duplicates ? client->refcount : 1;
while (count--) {
gssize ret;
ret =
g_socket_send_message (socket, client->addr, vec, n_mem,
NULL, 0, 0, sink->cancellable, &err);
if (G_UNLIKELY (ret < 0)) {
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED))
goto flushing;
/* we continue after posting a warning, next packets might be ok
* again */
if (size > UDP_MAX_SIZE) {
GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
("Attempting to send a UDP packet larger than maximum size "
"(%" G_GSIZE_FORMAT " > %d)", size, UDP_MAX_SIZE),
("Reason: %s", err ? err->message : "unknown reason"));
} else {
GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
("Error sending UDP packet"), ("Reason: %s",
err ? err->message : "unknown reason"));
}
g_clear_error (&err);
} else {
num++;
client->bytes_sent += ret;
client->packets_sent++;
sink->bytes_served += ret;
}
}
}
g_mutex_unlock (&sink->client_lock);
/* unmap all memory again */
for (i = 0; i < n_mem; i++) {
gst_memory_unmap (map[i].memory, &map[i]);
gst_memory_unref (map[i].memory);
}
GST_LOG_OBJECT (sink, "sent %" G_GSIZE_FORMAT " bytes to %d (of %d) clients",
size, num, no_clients);
return GST_FLOW_OK;
no_data:
{
return GST_FLOW_OK;
}
flushing:
{
GST_DEBUG ("we are flushing");
g_mutex_unlock (&sink->client_lock);
g_clear_error (&err);
/* unmap all memory */
for (i = 0; i < n_mem; i++) {
gst_memory_unmap (map[i].memory, &map[i]);
gst_memory_unref (map[i].memory);
}
return GST_FLOW_FLUSHING;
}
}
void
gst_multiudpsink_remove (GstMultiUDPSink * sink, const gchar * host, gint port)
{
GList *find;
GstUDPClient udpclient;
GstUDPClient *client;
GTimeVal now;
udpclient.host = (gchar *) host;
udpclient.port = port;
g_mutex_lock (&sink->client_lock);
find = g_list_find_custom (sink->clients, &udpclient,
(GCompareFunc) client_compare);
if (!find)
goto not_found;
client = (GstUDPClient *) find->data;
GST_DEBUG_OBJECT (sink, "found %d clients with host %s, port %d",
client->refcount, host, port);
client->refcount--;
if (client->refcount == 0) {
GInetSocketAddress *saddr = G_INET_SOCKET_ADDRESS (client->addr);
GInetAddress *addr = g_inet_socket_address_get_address (saddr);
GSocketFamily family =
g_socket_address_get_family (G_SOCKET_ADDRESS (saddr));
GSocket *socket;
/* Select socket to send from for this address */
if (family == G_SOCKET_FAMILY_IPV6 || !sink->used_socket)
socket = sink->used_socket_v6;
else
socket = sink->used_socket;
GST_DEBUG_OBJECT (sink, "remove client with host %s, port %d", host, port);
g_get_current_time (&now);
client->disconnect_time = GST_TIMEVAL_TO_TIME (now);
if (socket && sink->auto_multicast
&& g_inet_address_get_is_multicast (addr)) {
GError *err = NULL;
if (!g_socket_leave_multicast_group (socket, addr, FALSE,
sink->multi_iface, &err)) {
GST_DEBUG_OBJECT (sink, "Failed to leave multicast group: %s",
err->message);
g_clear_error (&err);
}
}
/* Unlock to emit signal before we delete the actual client */
g_mutex_unlock (&sink->client_lock);
g_signal_emit (G_OBJECT (sink),
gst_multiudpsink_signals[SIGNAL_CLIENT_REMOVED], 0, host, port);
g_mutex_lock (&sink->client_lock);
sink->clients = g_list_delete_link (sink->clients, find);
free_client (client);
}
g_mutex_unlock (&sink->client_lock);
return;
/* ERRORS */
not_found:
{
g_mutex_unlock (&sink->client_lock);
GST_WARNING_OBJECT (sink, "client at host %s, port %d not found",
host, port);
return;
}
}
/* set up server */
static gboolean
gst_tcp_server_src_start (GstBaseSrc * bsrc)
{
GstTCPServerSrc *src = GST_TCP_SERVER_SRC (bsrc);
GError *err = NULL;
GInetAddress *addr;
GSocketAddress *saddr;
GResolver *resolver;
/* look up name if we need to */
addr = g_inet_address_new_from_string (src->host);
if (!addr) {
GList *results;
resolver = g_resolver_get_default ();
results =
g_resolver_lookup_by_name (resolver, src->host, src->cancellable, &err);
if (!results)
goto name_resolve;
addr = G_INET_ADDRESS (g_object_ref (results->data));
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
#ifndef GST_DISABLE_GST_DEBUG
{
gchar *ip = g_inet_address_to_string (addr);
GST_DEBUG_OBJECT (src, "IP address for host %s is %s", src->host, ip);
g_free (ip);
}
#endif
saddr = g_inet_socket_address_new (addr, src->server_port);
g_object_unref (addr);
/* create the server listener socket */
src->server_socket =
g_socket_new (g_socket_address_get_family (saddr), G_SOCKET_TYPE_STREAM,
G_SOCKET_PROTOCOL_TCP, &err);
if (!src->server_socket)
goto no_socket;
GST_DEBUG_OBJECT (src, "opened receiving server socket");
/* bind it */
GST_DEBUG_OBJECT (src, "binding server socket to address");
if (!g_socket_bind (src->server_socket, saddr, TRUE, &err))
goto bind_failed;
g_object_unref (saddr);
GST_DEBUG_OBJECT (src, "listening on server socket");
g_socket_set_listen_backlog (src->server_socket, TCP_BACKLOG);
if (!g_socket_listen (src->server_socket, &err))
goto listen_failed;
GST_OBJECT_FLAG_SET (src, GST_TCP_SERVER_SRC_OPEN);
return TRUE;
/* ERRORS */
no_socket:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Failed to create socket: %s", err->message));
g_clear_error (&err);
g_object_unref (saddr);
return FALSE;
}
name_resolve:
{
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
GST_DEBUG_OBJECT (src, "Cancelled name resolval");
} else {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Failed to resolve host '%s': %s", src->host, err->message));
}
g_clear_error (&err);
g_object_unref (resolver);
return FALSE;
}
bind_failed:
{
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
GST_DEBUG_OBJECT (src, "Cancelled binding");
} else {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Failed to bind on host '%s:%d': %s", src->host, src->server_port,
err->message));
}
g_clear_error (&err);
g_object_unref (saddr);
gst_tcp_server_src_stop (GST_BASE_SRC (src));
return FALSE;
}
listen_failed:
{
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
GST_DEBUG_OBJECT (src, "Cancelled listening");
} else {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Failed to listen on host '%s:%d': %s", src->host, src->server_port,
err->message));
}
g_clear_error (&err);
gst_tcp_server_src_stop (GST_BASE_SRC (src));
return FALSE;
}
}
