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113 lines
3.2 KiB
C
113 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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/* clean up from possible previous iterations */
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g_clear_error (err);
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/* update iter in case we get called again */
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*iter = (*iter)->next;
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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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