mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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408b2fa634
Lookup will now maintain the full list of possible IP address(es). We can now iterate over all available addresses in case certain address families (IPv6) are disabled or try connecting to additional addresses for the clients. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/1105>
111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) 2020 Huawei Technologies Co., Ltd.
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* @Author: Stéphane Cerveau <scerveau@collabora.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gsttcpelements.h"
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GST_DEBUG_CATEGORY (tcp_debug);
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#define GST_CAT_DEFAULT tcp_debug
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void
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tcp_element_init (GstPlugin * plugin)
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{
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static gsize res = FALSE;
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if (g_once_init_enter (&res)) {
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GST_DEBUG_CATEGORY_INIT (tcp_debug, "tcp", 0, "TCP calls");
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g_once_init_leave (&res, TRUE);
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}
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}
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GList *
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tcp_get_addresses (GstElement * obj, const char *host,
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GCancellable * cancellable, GError ** err)
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{
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GList *addrs = NULL;
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GInetAddress *addr;
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g_return_val_if_fail (GST_IS_ELEMENT (obj), NULL);
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g_return_val_if_fail (host != NULL, NULL);
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g_return_val_if_fail (err == NULL || *err == NULL, NULL);
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/* look up name if we need to */
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addr = g_inet_address_new_from_string (host);
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if (addr) {
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addrs = g_list_append (addrs, addr);
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} else {
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GResolver *resolver = g_resolver_get_default ();
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GST_DEBUG_OBJECT (obj, "Looking up IP address(es) for host '%s'", host);
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addrs = g_resolver_lookup_by_name (resolver, host, cancellable, err);
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g_object_unref (resolver);
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}
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return addrs;
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}
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/*
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* Loops over available addresses until successfully creates a socket
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*
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* iter: updated to contain current list position or NULL if finished
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* saddr: contains current address is successful
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*/
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GSocket *
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tcp_create_socket (GstElement * obj, GList ** iter, guint16 port,
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GSocketAddress ** saddr, GError ** err)
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{
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GSocket *sock = NULL;
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g_return_val_if_fail (GST_IS_ELEMENT (obj), NULL);
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g_return_val_if_fail (iter != NULL, NULL);
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g_return_val_if_fail (saddr != NULL, NULL);
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g_return_val_if_fail (err == NULL || *err == NULL, NULL);
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*saddr = NULL;
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while (*iter) {
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GInetAddress *addr = G_INET_ADDRESS ((*iter)->data);
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#ifndef GST_DISABLE_GST_DEBUG
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{
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gchar *ip = g_inet_address_to_string (addr);
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GST_DEBUG_OBJECT (obj, "Trying IP address %s", ip);
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g_free (ip);
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}
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#endif
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/* update iter in case we get called again */
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*iter = (*iter)->next;
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g_clear_error (err);
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*saddr = g_inet_socket_address_new (addr, port);
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sock =
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g_socket_new (g_socket_address_get_family (*saddr),
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G_SOCKET_TYPE_STREAM, G_SOCKET_PROTOCOL_TCP, err);
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if (sock)
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break;
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/* release and try next... */
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g_clear_object (saddr);
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}
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return sock;
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}
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