gstreamer/gst/tcp/gsttcpserversink.c
Mark Nauwelaerts e5e09844ea tcp: use socklen_t where appropriate rather than specific type
In particular, fixes Cygwin build where socklen_t is defined as int
in line with native win32 api definition.
2011-01-31 19:21:32 +01:00

378 lines
11 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-tcpserversink
* @see_also: #multifdsink
*
* <refsect2>
* <title>Example launch line</title>
* |[
* # server:
* gst-launch fdsrc fd=1 ! tcpserversink protocol=none port=3000
* # client:
* gst-launch tcpclientsrc protocol=none port=3000 ! fdsink fd=2
* ]|
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst-i18n-plugin.h>
#include <string.h> /* memset */
#include <sys/ioctl.h>
#ifdef HAVE_FIONREAD_IN_SYS_FILIO
#include <sys/filio.h>
#endif
#include "gsttcp.h"
#include "gsttcpserversink.h"
#include "gsttcp-marshal.h"
#define TCP_BACKLOG 5
GST_DEBUG_CATEGORY_STATIC (tcpserversink_debug);
#define GST_CAT_DEFAULT (tcpserversink_debug)
enum
{
ARG_0,
ARG_HOST,
ARG_PORT,
};
static void gst_tcp_server_sink_finalize (GObject * gobject);
static gboolean gst_tcp_server_sink_handle_wait (GstMultiFdSink * sink,
GstPoll * set);
static gboolean gst_tcp_server_sink_init_send (GstMultiFdSink * this);
static gboolean gst_tcp_server_sink_close (GstMultiFdSink * this);
static void gst_tcp_server_sink_removed (GstMultiFdSink * sink, int fd);
static void gst_tcp_server_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_tcp_server_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
GST_BOILERPLATE (GstTCPServerSink, gst_tcp_server_sink, GstMultiFdSink,
GST_TYPE_MULTI_FD_SINK);
static void
gst_tcp_server_sink_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details_simple (element_class,
"TCP server sink", "Sink/Network",
"Send data as a server over the network via TCP",
"Thomas Vander Stichele <thomas at apestaart dot org>");
}
static void
gst_tcp_server_sink_class_init (GstTCPServerSinkClass * klass)
{
GObjectClass *gobject_class;
GstMultiFdSinkClass *gstmultifdsink_class;
gobject_class = (GObjectClass *) klass;
gstmultifdsink_class = (GstMultiFdSinkClass *) klass;
gobject_class->set_property = gst_tcp_server_sink_set_property;
gobject_class->get_property = gst_tcp_server_sink_get_property;
gobject_class->finalize = gst_tcp_server_sink_finalize;
g_object_class_install_property (gobject_class, ARG_HOST,
g_param_spec_string ("host", "host", "The host/IP to send the packets to",
TCP_DEFAULT_HOST, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_PORT,
g_param_spec_int ("port", "port", "The port to send the packets to",
0, TCP_HIGHEST_PORT, TCP_DEFAULT_PORT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gstmultifdsink_class->init = gst_tcp_server_sink_init_send;
gstmultifdsink_class->wait = gst_tcp_server_sink_handle_wait;
gstmultifdsink_class->close = gst_tcp_server_sink_close;
gstmultifdsink_class->removed = gst_tcp_server_sink_removed;
GST_DEBUG_CATEGORY_INIT (tcpserversink_debug, "tcpserversink", 0, "TCP sink");
}
static void
gst_tcp_server_sink_init (GstTCPServerSink * this,
GstTCPServerSinkClass * klass)
{
this->server_port = TCP_DEFAULT_PORT;
/* should support as minimum 576 for IPV4 and 1500 for IPV6 */
/* this->mtu = 1500; */
this->host = g_strdup (TCP_DEFAULT_HOST);
this->server_sock.fd = -1;
}
static void
gst_tcp_server_sink_finalize (GObject * gobject)
{
GstTCPServerSink *this = GST_TCP_SERVER_SINK (gobject);
g_free (this->host);
G_OBJECT_CLASS (parent_class)->finalize (gobject);
}
/* handle a read request on the server,
* which indicates a new client connection */
static gboolean
gst_tcp_server_sink_handle_server_read (GstTCPServerSink * sink)
{
/* new client */
int client_sock_fd;
struct sockaddr_in client_address;
socklen_t client_address_len;
/* For some stupid reason, client_address and client_address_len has to be
* zeroed */
memset (&client_address, 0, sizeof (client_address));
client_address_len = 0;
client_sock_fd =
accept (sink->server_sock.fd, (struct sockaddr *) &client_address,
&client_address_len);
if (client_sock_fd == -1)
goto accept_failed;
gst_multi_fd_sink_add (GST_MULTI_FD_SINK (sink), client_sock_fd);
GST_DEBUG_OBJECT (sink, "added new client ip %s with fd %d",
inet_ntoa (client_address.sin_addr), client_sock_fd);
return TRUE;
/* ERRORS */
accept_failed:
{
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL),
("Could not accept client on server socket %d: %s (%d)",
sink->server_sock.fd, g_strerror (errno), errno));
return FALSE;
}
}
static void
gst_tcp_server_sink_removed (GstMultiFdSink * sink, int fd)
{
#ifndef GST_DISABLE_GST_DEBUG
GstTCPServerSink *this = GST_TCP_SERVER_SINK (sink);
#endif
GST_LOG_OBJECT (this, "closing fd %d", fd);
if (close (fd) < 0) {
GST_WARNING_OBJECT (this, "error closing fd %d: %s", fd,
g_strerror (errno));
}
}
static gboolean
gst_tcp_server_sink_handle_wait (GstMultiFdSink * sink, GstPoll * set)
{
GstTCPServerSink *this = GST_TCP_SERVER_SINK (sink);
if (gst_poll_fd_can_read (set, &this->server_sock)) {
/* handle new client connection on server socket */
if (!gst_tcp_server_sink_handle_server_read (this))
goto connection_failed;
}
return TRUE;
/* ERRORS */
connection_failed:
{
GST_ELEMENT_ERROR (this, RESOURCE, READ, (NULL),
("client connection failed: %s", g_strerror (errno)));
return FALSE;
}
}
static void
gst_tcp_server_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstTCPServerSink *sink;
g_return_if_fail (GST_IS_TCP_SERVER_SINK (object));
sink = GST_TCP_SERVER_SINK (object);
switch (prop_id) {
case ARG_HOST:
if (!g_value_get_string (value)) {
g_warning ("host property cannot be NULL");
break;
}
g_free (sink->host);
sink->host = g_strdup (g_value_get_string (value));
break;
case ARG_PORT:
sink->server_port = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_tcp_server_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstTCPServerSink *sink;
g_return_if_fail (GST_IS_TCP_SERVER_SINK (object));
sink = GST_TCP_SERVER_SINK (object);
switch (prop_id) {
case ARG_HOST:
g_value_set_string (value, sink->host);
break;
case ARG_PORT:
g_value_set_int (value, sink->server_port);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* create a socket for sending to remote machine */
static gboolean
gst_tcp_server_sink_init_send (GstMultiFdSink * parent)
{
int ret;
GstTCPServerSink *this = GST_TCP_SERVER_SINK (parent);
/* create sending server socket */
if ((this->server_sock.fd = socket (AF_INET, SOCK_STREAM, 0)) == -1)
goto no_socket;
GST_DEBUG_OBJECT (this, "opened sending server socket with fd %d",
this->server_sock.fd);
/* make address reusable */
ret = 1;
if (setsockopt (this->server_sock.fd, SOL_SOCKET, SO_REUSEADDR,
(void *) &ret, sizeof (ret)) < 0)
goto reuse_failed;
/* keep connection alive; avoids SIGPIPE during write */
ret = 1;
if (setsockopt (this->server_sock.fd, SOL_SOCKET, SO_KEEPALIVE,
(void *) &ret, sizeof (ret)) < 0)
goto keepalive_failed;
/* name the socket */
memset (&this->server_sin, 0, sizeof (this->server_sin));
this->server_sin.sin_family = AF_INET; /* network socket */
this->server_sin.sin_port = htons (this->server_port); /* on port */
this->server_sin.sin_addr.s_addr = htonl (INADDR_ANY); /* for hosts */
/* bind it */
GST_DEBUG_OBJECT (this, "binding server socket to address");
ret = bind (this->server_sock.fd, (struct sockaddr *) &this->server_sin,
sizeof (this->server_sin));
if (ret)
goto bind_failed;
/* set the server socket to nonblocking */
fcntl (this->server_sock.fd, F_SETFL, O_NONBLOCK);
GST_DEBUG_OBJECT (this, "listening on server socket %d with queue of %d",
this->server_sock.fd, TCP_BACKLOG);
if (listen (this->server_sock.fd, TCP_BACKLOG) == -1)
goto listen_failed;
GST_DEBUG_OBJECT (this,
"listened on server socket %d, returning from connection setup",
this->server_sock.fd);
gst_poll_add_fd (parent->fdset, &this->server_sock);
gst_poll_fd_ctl_read (parent->fdset, &this->server_sock, TRUE);
return TRUE;
/* ERRORS */
no_socket:
{
GST_ELEMENT_ERROR (this, RESOURCE, OPEN_WRITE, (NULL), GST_ERROR_SYSTEM);
return FALSE;
}
reuse_failed:
{
gst_tcp_socket_close (&this->server_sock);
GST_ELEMENT_ERROR (this, RESOURCE, SETTINGS, (NULL),
("Could not setsockopt: %s", g_strerror (errno)));
return FALSE;
}
keepalive_failed:
{
gst_tcp_socket_close (&this->server_sock);
GST_ELEMENT_ERROR (this, RESOURCE, SETTINGS, (NULL),
("Could not setsockopt: %s", g_strerror (errno)));
return FALSE;
}
listen_failed:
{
gst_tcp_socket_close (&this->server_sock);
GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
("Could not listen on server socket: %s", g_strerror (errno)));
return FALSE;
}
bind_failed:
{
gst_tcp_socket_close (&this->server_sock);
switch (errno) {
default:
GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
("bind on port %d failed: %s", this->server_port,
g_strerror (errno)));
break;
}
return FALSE;
}
}
static gboolean
gst_tcp_server_sink_close (GstMultiFdSink * parent)
{
GstTCPServerSink *this = GST_TCP_SERVER_SINK (parent);
if (this->server_sock.fd != -1) {
gst_poll_remove_fd (parent->fdset, &this->server_sock);
close (this->server_sock.fd);
this->server_sock.fd = -1;
}
return TRUE;
}