rtsp.c 52.3 KB
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/*****************************************************************************
 * rtsp.c: rtsp VoD server module
 *****************************************************************************
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 * Copyright (C) 2003-2006 the VideoLAN team
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 * $Id$
 *
 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
 *          Gildas Bazin <gbazin@videolan.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/

#include <errno.h>

#include <vlc/vlc.h>
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#include <vlc_input.h>
#include <vlc_sout.h>
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#include <vlc_block.h>
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#include "vlc_httpd.h"
#include "vlc_vod.h"
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#include "vlc_url.h"
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#include <vlc_network.h>
#include <vlc_charset.h>
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#include <vlc_strings.h>
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/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
static int  Open ( vlc_object_t * );
static void Close( vlc_object_t * );

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#define HOST_TEXT N_( "RTSP host address" )
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#define HOST_LONGTEXT N_( \
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    "This defines the address, port and path the RTSP VOD server will listen " \
    "on.\nSyntax is address:port/path. The default is to listen on all "\
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    "interfaces (address 0.0.0.0), on port 554, with no path.\nTo listen " \
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    "only on the local interface, use \"localhost\" as address." )
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#define THROTLE_TEXT N_( "Maximum number of connections" )
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#define THROTLE_LONGTEXT N_( "This limits the maximum number of clients " \
    "that can connect to the RTSP VOD. 0 means no limit."  )
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#define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )

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#define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
    "session string" )
#define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
    "to the RTSP session ID string. Setting it to a negative number removes " \
    "the timeout option entirely. This is needed by some IPTV STBs (such as " \
    "those made by HansunTech) which get confused by it. The default is 5." )

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vlc_module_begin();
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    set_shortname( _("RTSP VoD" ) );
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    set_description( _("RTSP VoD server") );
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    set_category( CAT_SOUT );
    set_subcategory( SUBCAT_SOUT_VOD );
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    set_capability( "vod server", 1 );
    set_callbacks( Open, Close );
    add_shortcut( "rtsp" );
    add_string ( "rtsp-host", NULL, NULL, HOST_TEXT, HOST_LONGTEXT, VLC_TRUE );
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    add_string( "rtsp-raw-mux", "ts", NULL, RAWMUX_TEXT, RAWMUX_TEXT, VLC_TRUE );
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    add_integer( "rtsp-throttle-users", 0, NULL, THROTLE_TEXT,
                                           THROTLE_LONGTEXT, VLC_TRUE );
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    add_integer( "rtsp-session-timeout", 5, NULL, SESSION_TIMEOUT_TEXT,
                 SESSION_TIMEOUT_LONGTEXT, VLC_TRUE );
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vlc_module_end();

/*****************************************************************************
 * Exported prototypes
 *****************************************************************************/

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typedef struct media_es_t media_es_t;

typedef struct
{
    media_es_t *p_media_es;
    char *psz_ip;
    int i_port;

} rtsp_client_es_t;

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typedef struct
{
    char *psz_session;
    int64_t i_last; /* for timeout */

    vlc_bool_t b_playing; /* is it in "play" state */
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    vlc_bool_t b_paused; /* is it in "pause" state */

    int i_es;
    rtsp_client_es_t **es;
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} rtsp_client_t;

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struct media_es_t
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{
    /* VoD server */
    vod_t *p_vod;

    /* RTSP server */
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    httpd_url_t *p_rtsp_url;
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    vod_media_t *p_media;

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    es_format_t fmt;
    int         i_port;
    uint8_t     i_payload_type;
    char        *psz_rtpmap;
    char        *psz_fmtp;

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};
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struct vod_media_t
{
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    int id;

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    /* VoD server */
    vod_t *p_vod;

    /* RTSP server */
    httpd_url_t  *p_rtsp_url;
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    char         *psz_rtsp_control_v4;
    char         *psz_rtsp_control_v6;
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    char         *psz_rtsp_path;

    int  i_port;
    int  i_port_audio;
    int  i_port_video;
    int  i_ttl;
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    int  i_payload_type;

    int64_t i_sdp_id;
    int     i_sdp_version;

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    vlc_bool_t b_multicast;

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    vlc_mutex_t lock;
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    /* ES list */
    int        i_es;
    media_es_t **es;
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    char       *psz_mux;
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    vlc_bool_t  b_raw;
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    /* RTSP client */
    int           i_rtsp;
    rtsp_client_t **rtsp;
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    /* Infos */
    char *psz_session_name;
    char *psz_session_description;
    char *psz_session_url;
    char *psz_session_email;
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    mtime_t i_length;
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};

struct vod_sys_t
{
    /* RTSP server */
    httpd_host_t *p_rtsp_host;
    char *psz_path;
    int i_port;
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    int i_throttle_users;
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    int i_connections;
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    char *psz_raw_mux;

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    int i_session_timeout;

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    /* List of media */
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    vlc_mutex_t lock_media;
    int i_media_id;
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    int i_media;
    vod_media_t **media;
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    /* */
    block_fifo_t *p_fifo_cmd;
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};

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/* rtsp delayed command (to avoid deadlock between vlm/httpd) */
typedef enum
{
    RTSP_CMD_TYPE_NONE,  /* Exit requested */

    RTSP_CMD_TYPE_PLAY,
    RTSP_CMD_TYPE_PAUSE,
    RTSP_CMD_TYPE_STOP,
    RTSP_CMD_TYPE_SEEK,
    RTSP_CMD_TYPE_REWIND,
    RTSP_CMD_TYPE_FORWARD,
} rtsp_cmd_type_t;

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static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
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static void         MediaDel( vod_t *, vod_media_t * );
static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );

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static void CommandThread( vlc_object_t *p_this );
static void CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *, const char *psz_session,
                         double f_arg, const char *psz_arg );

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static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
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static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
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static void           RtspClientDel( vod_media_t *, rtsp_client_t * );

static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
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                         httpd_message_t *, const httpd_message_t * );
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static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
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                           httpd_message_t *, const httpd_message_t * );
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static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
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static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
{
    static const char hex[16] = "0123456789abcdef";
    int i;

    for( i = 0; i < i_data; i++ )
    {
        s[2*i+0] = hex[(p_data[i]>>4)&0xf];
        s[2*i+1] = hex[(p_data[i]   )&0xf];
    }
    s[2*i_data] = '\0';
}

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/*****************************************************************************
 * Open: Starts the RTSP server module
 *****************************************************************************/
static int Open( vlc_object_t *p_this )
{
    vod_t *p_vod = (vod_t *)p_this;
    vod_sys_t *p_sys = 0;
    char *psz_url = 0;
    vlc_url_t url;

    psz_url = config_GetPsz( p_vod, "rtsp-host" );
    vlc_UrlParse( &url, psz_url, 0 );
    if( psz_url ) free( psz_url );

    if( url.i_port <= 0 ) url.i_port = 554;

    p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
    if( !p_sys ) goto error;
    p_sys->p_rtsp_host = 0;

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    p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
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    p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
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    msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
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    p_sys->i_connections = 0;

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    p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
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    p_sys->p_rtsp_host =
        httpd_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
    if( !p_sys->p_rtsp_host )
    {
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        msg_Err( p_vod, "cannot create RTSP server (%s:%i)",
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                 url.psz_host, url.i_port );
        goto error;
    }

    p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
    p_sys->i_port = url.i_port;

    vlc_UrlClean( &url );
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    vlc_mutex_init( p_vod, &p_sys->lock_media );

    TAB_INIT( p_sys->i_media, p_sys->media );
    p_sys->i_media_id = 0;
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    p_vod->pf_media_new = MediaNew;
    p_vod->pf_media_del = MediaDel;
    p_vod->pf_media_add_es = MediaAddES;
    p_vod->pf_media_del_es = MediaDelES;

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    p_sys->p_fifo_cmd = block_FifoNew( p_vod );
    if( vlc_thread_create( p_vod, "rtsp vod thread", CommandThread,
                           VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
    {
        msg_Err( p_vod, "cannot spawn rtsp vod thread" );
        block_FifoRelease( p_sys->p_fifo_cmd );
        free( p_sys->psz_path );
        goto error;
    }

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    return VLC_SUCCESS;

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error:
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    if( p_sys && p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
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    if( p_sys && p_sys->psz_raw_mux ) free( p_sys->psz_raw_mux );
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    if( p_sys ) free( p_sys );
    vlc_UrlClean( &url );
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    return VLC_EGENERIC;
}

/*****************************************************************************
 * Close:
 *****************************************************************************/
static void Close( vlc_object_t * p_this )
{
    vod_t *p_vod = (vod_t *)p_this;
    vod_sys_t *p_sys = p_vod->p_sys;

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    /* Stop command thread */
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    vlc_object_kill( p_vod );
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    CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
    vlc_thread_join( p_vod );

    block_FifoRelease( p_sys->p_fifo_cmd );

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    httpd_HostDelete( p_sys->p_rtsp_host );
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    var_Destroy( p_this, "rtsp-session-timeout" );
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    var_Destroy( p_this, "rtsp-throttle-users" );
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    var_Destroy( p_this, "rtsp-raw-mux" );
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    /* Check VLM is not buggy */
    if( p_sys->i_media > 0 )
        msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
    TAB_CLEAN( p_sys->i_media, p_sys->media );

    vlc_mutex_destroy( &p_sys->lock_media );

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    free( p_sys->psz_path );
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    free( p_sys->psz_raw_mux );
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    free( p_sys );
}

/*****************************************************************************
 * Media handling
 *****************************************************************************/
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static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
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                              input_item_t *p_item )
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{
    vod_sys_t *p_sys = p_vod->p_sys;
    vod_media_t *p_media = malloc( sizeof(vod_media_t) );
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    int i;
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    if( !p_media )
    {
        msg_Err( p_vod, "not enough memory" );
        return NULL;
    }

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    memset( p_media, 0, sizeof(vod_media_t) );
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    p_media->id = p_sys->i_media_id++;
    TAB_INIT( p_media->i_es, p_media->es );
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    p_media->psz_mux = 0;
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    TAB_INIT( p_media->i_rtsp, p_media->rtsp );
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    p_media->b_raw = VLC_FALSE;
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    asprintf( &p_media->psz_rtsp_path, "%s%s", p_sys->psz_path, psz_name );
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    p_media->p_rtsp_url =
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        httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
                            NULL, NULL );
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    if( !p_media->p_rtsp_url )
    {
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        msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
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        free( p_media->psz_rtsp_path );
        free( p_media );
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        return NULL;
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    }

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    msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
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    asprintf( &p_media->psz_rtsp_control_v4,
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               "a=control:rtsp://%%s:%d%s/trackID=%%d\r\n",
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               p_sys->i_port, p_media->psz_rtsp_path );
    asprintf( &p_media->psz_rtsp_control_v6,
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               "a=control:rtsp://[%%s]:%d%s/trackID=%%d\r\n",
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              p_sys->i_port, p_media->psz_rtsp_path );
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    httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
                    RtspCallback, (void*)p_media );
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    httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
                    RtspCallback, (void*)p_media );
    httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
                    RtspCallback, (void*)p_media );
    httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
                    RtspCallback, (void*)p_media );
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    httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
                    RtspCallback, (void*)p_media );
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    httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
                    RtspCallback, (void*)p_media );

    p_media->p_vod = p_vod;

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    vlc_mutex_lock( &p_sys->lock_media );
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    TAB_APPEND( p_sys->i_media, p_sys->media, p_media );
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    vlc_mutex_unlock( &p_sys->lock_media );
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    vlc_mutex_init( p_vod, &p_media->lock );
    p_media->psz_session_name = strdup("");
    p_media->psz_session_description = strdup("");
    p_media->psz_session_url = strdup("");
    p_media->psz_session_email = strdup("");

    p_media->i_port_audio = 1234;
    p_media->i_port_video = 1236;
    p_media->i_port       = 1238;
    p_media->i_payload_type = 96;

    p_media->i_sdp_id = mdate();
    p_media->i_sdp_version = 1;
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    p_media->i_length = input_item_GetDuration( p_item );
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    vlc_mutex_lock( &p_item->lock );
    msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
    for( i = 0; i < p_item->i_es; i++ )
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    {
        MediaAddES( p_vod, p_media, p_item->es[i] );
    }
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    vlc_mutex_unlock( &p_item->lock );

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    return p_media;
}

static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
{
    vod_sys_t *p_sys = p_vod->p_sys;

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    msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );

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    vlc_mutex_lock( &p_sys->lock_media );
    TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
    vlc_mutex_unlock( &p_sys->lock_media );

    while( p_media->i_rtsp > 0 )
        RtspClientDel( p_media, p_media->rtsp[0] );
    TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
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    httpd_UrlDelete( p_media->p_rtsp_url );
    if( p_media->psz_rtsp_path ) free( p_media->psz_rtsp_path );
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    if( p_media->psz_rtsp_control_v6 ) free( p_media->psz_rtsp_control_v6 );
    if( p_media->psz_rtsp_control_v4 ) free( p_media->psz_rtsp_control_v4 );
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    while( p_media->i_es )
        MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
    TAB_CLEAN( p_media->i_es, p_media->es );
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    vlc_mutex_destroy( &p_media->lock );
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    if( p_media->psz_session_name ) free( p_media->psz_session_name );
    if( p_media->psz_session_description ) free( p_media->psz_session_description );
    if( p_media->psz_session_url ) free( p_media->psz_session_url );
    if( p_media->psz_session_email ) free( p_media->psz_session_email );
    if( p_media->psz_mux ) free( p_media->psz_mux );
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    free( p_media );
}

static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
{
    media_es_t *p_es = malloc( sizeof(media_es_t) );
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    char *psz_urlc;
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    if( !p_es ) return VLC_ENOMEM;
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    memset( p_es, 0, sizeof(media_es_t) );
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    if( p_media->psz_mux ) free( p_media->psz_mux );
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    p_media->psz_mux = NULL;
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    /* TODO: update SDP, etc... */
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    asprintf( &psz_urlc, "%s/trackID=%d",
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              p_media->psz_rtsp_path, p_media->i_es );
    msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
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    switch( p_fmt->i_codec )
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    {
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        case VLC_FOURCC( 's', '1', '6', 'b' ):
            if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
            {
                p_es->i_payload_type = 11;
            }
            else if( p_fmt->audio.i_channels == 2 && p_fmt->audio.i_rate == 44100 )
            {
                p_es->i_payload_type = 10;
            }
            else
            {
                p_es->i_payload_type = p_media->i_payload_type++;
            }
            p_es->psz_rtpmap = malloc( strlen( "L16/*/*" ) + 20+1 );
            sprintf( p_es->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
                    p_fmt->audio.i_channels );
            break;
        case VLC_FOURCC( 'u', '8', ' ', ' ' ):
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            p_es->i_payload_type = p_media->i_payload_type++;
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            p_es->psz_rtpmap = malloc( strlen( "L8/*/*" ) + 20+1 );
            sprintf( p_es->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
                    p_fmt->audio.i_channels );
            break;
        case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
            p_es->i_payload_type = 14;
            p_es->psz_rtpmap = strdup( "MPA/90000" );
            break;
        case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
            p_es->i_payload_type = 32;
            p_es->psz_rtpmap = strdup( "MPV/90000" );
            break;
        case VLC_FOURCC( 'a', '5', '2', ' ' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( "ac3/90000" );
            break;
        case VLC_FOURCC( 'H', '2', '6', '3' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( "H263-1998/90000" );
            break;
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        case VLC_FOURCC( 'h', '2', '6', '4' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( "H264/90000" );
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            p_es->psz_fmtp = NULL;
            /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
            if( p_fmt->i_extra > 0 )
            {
                uint8_t *p_buffer = p_fmt->p_extra;
                int     i_buffer = p_fmt->i_extra;
                char    *p_64_sps = NULL;
                char    *p_64_pps = NULL;
                char    hexa[6+1];

                while( i_buffer > 4 &&
                       p_buffer[0] == 0 && p_buffer[1] == 0 &&
                       p_buffer[2] == 0 && p_buffer[3] == 1 )
                {
                    const int i_nal_type = p_buffer[4]&0x1f;
                    int i_offset;
                    int i_size      = 0;

                    i_size = i_buffer;
                    for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
                    {
                        if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
                        {
                            /* we found another startcode */
                            i_size = i_offset;
                            break;
                        }
                    }
                    if( i_nal_type == 7 )
                    {
                        p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
                        sprintf_hexa( hexa, &p_buffer[5], 3 );
                    }
                    else if( i_nal_type == 8 )
                    {
                        p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
                    }
                    i_buffer -= i_size;
                    p_buffer += i_size;
                }
                /* */
                if( p_64_sps && p_64_pps )
                    asprintf( &p_es->psz_fmtp, "packetization-mode=1;profile-level-id=%s;sprop-parameter-sets=%s,%s;", hexa, p_64_sps, p_64_pps );
                if( p_64_sps )
                    free( p_64_sps );
                if( p_64_pps )
                    free( p_64_pps );
            }
            if( !p_es->psz_fmtp )
                p_es->psz_fmtp = strdup( "packetization-mode=1" );
581
            break;
582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611
        case VLC_FOURCC( 'm', 'p', '4', 'v' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( "MP4V-ES/90000" );
            if( p_fmt->i_extra > 0 )
            {
                char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
                p_es->psz_fmtp = malloc( 100 + 2 * p_fmt->i_extra );
                sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
                sprintf( p_es->psz_fmtp,
                        "profile-level-id=3; config=%s;", p_hexa );
                free( p_hexa );
            }
            break;
        case VLC_FOURCC( 'm', 'p', '4', 'a' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = malloc( strlen( "mpeg4-generic/" ) + 12 );
            sprintf( p_es->psz_rtpmap, "mpeg4-generic/%d", p_fmt->audio.i_rate );
            if( p_fmt->i_extra > 0 )
            {
                char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
                p_es->psz_fmtp = malloc( 200 + 2 * p_fmt->i_extra );
                sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
                sprintf( p_es->psz_fmtp,
                        "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
                        "config=%s; SizeLength=13;IndexLength=3; "
                        "IndexDeltaLength=3; Profile=1;", p_hexa );
                free( p_hexa );
            }
            break;
        case VLC_FOURCC( 'm', 'p', '2', 't' ):
612
            p_media->psz_mux = strdup("ts");
613 614 615 616
            p_es->i_payload_type = 33;
            p_es->psz_rtpmap = strdup( "MP2T/90000" );
            break;
        case VLC_FOURCC( 'm', 'p', '2', 'p' ):
617
            p_media->psz_mux = strdup("ps");
618 619 620 621 622 623 624 625 626 627 628 629 630 631 632
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( "MP2P/90000" );
            break;
        case VLC_FOURCC( 's', 'a', 'm', 'r' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
                                    "AMR/8000/2" : "AMR/8000" );
            p_es->psz_fmtp = strdup( "octet-align=1" );
            break;
        case VLC_FOURCC( 's', 'a', 'w', 'b' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
                                    "AMR-WB/16000/2" : "AMR-WB/16000" );
            p_es->psz_fmtp = strdup( "octet-align=1" );
            break;
633

634 635 636 637 638
        default:
            msg_Err( p_vod, "cannot add this stream (unsupported "
                    "codec: %4.4s)", (char*)&p_fmt->i_codec );
            free( p_es );
            return VLC_EGENERIC;
639 640 641
    }

    p_es->p_rtsp_url =
642 643
        httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
                            NULL );
644 645 646

    if( !p_es->p_rtsp_url )
    {
647
        msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
648 649 650
        free( psz_urlc );
        free( p_es );
        return VLC_EGENERIC;
651
    }
652 653 654 655
    free( psz_urlc );

    httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
                    RtspCallbackES, (void*)p_es );
656 657 658 659 660 661
    httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
                    RtspCallbackES, (void*)p_es );
    httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
                    RtspCallbackES, (void*)p_es );
    httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
                    RtspCallbackES, (void*)p_es );
662

663
    es_format_Copy( &p_es->fmt, p_fmt );
664 665 666
    p_es->p_vod = p_vod;
    p_es->p_media = p_media;

667
#if 0
668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689
    /* Choose the port */
    if( p_fmt->i_cat == AUDIO_ES && p_media->i_port_audio > 0 )
    {
        p_es->i_port = p_media->i_port_audio;
        p_media->i_port_audio = 0;
    }
    else if( p_fmt->i_cat == VIDEO_ES && p_media->i_port_video > 0 )
    {
        p_es->i_port = p_media->i_port_video;
        p_media->i_port_video = 0;
    }
    while( !p_es->i_port )
    {
        if( p_media->i_port != p_media->i_port_audio &&
            p_media->i_port != p_media->i_port_video )
        {
            p_es->i_port = p_media->i_port;
            p_media->i_port += 2;
            break;
        }
        p_media->i_port += 2;
    }
690 691 692 693
#else

    p_es->i_port = 0;
#endif
694 695 696 697 698 699 700

    vlc_mutex_lock( &p_media->lock );
    TAB_APPEND( p_media->i_es, p_media->es, p_es );
    vlc_mutex_unlock( &p_media->lock );

    p_media->i_sdp_version++;

701 702 703 704 705
    return VLC_SUCCESS;
}

static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
{
706
    media_es_t *p_es = NULL;
707 708 709 710 711 712 713 714 715 716 717 718 719
    int i;

    /* Find the ES */
    for( i = 0; i < p_media->i_es; i++ )
    {
        if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
            p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
            p_media->es[i]->fmt.i_id == p_fmt->i_id )
        {
            p_es = p_media->es[i];
        }
    }
    if( !p_es ) return;
720

721 722 723
    msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );

    vlc_mutex_lock( &p_media->lock );
724
    TAB_REMOVE( p_media->i_es, p_media->es, p_es );
725
    vlc_mutex_unlock( &p_media->lock );
726

727 728 729
    if( p_es->psz_rtpmap ) free( p_es->psz_rtpmap );
    if( p_es->psz_fmtp ) free( p_es->psz_fmtp );
    p_media->i_sdp_version++;
730 731

    if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
732
    es_format_Clean( &p_es->fmt );
733
    free( p_es );
734 735
}

736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843
/* */
typedef struct
{
    int i_type;
    int i_media_id;
    //vod_media_t *p_media;
    char *psz_session;
    char *psz_arg;
    double f_arg;
} rtsp_cmd_t;

static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
                         double f_arg, const char *psz_arg )
{
    rtsp_cmd_t cmd;
    block_t *p_cmd;

    memset( &cmd, 0, sizeof(cmd) );
    cmd.i_type = i_type;
    if( p_media )
        cmd.i_media_id = p_media->id;
    if( psz_session )
        cmd.psz_session = strdup(psz_session);
    cmd.f_arg = f_arg;
    if( psz_arg )
        cmd.psz_arg = strdup(psz_arg);

    p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
    memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );

    block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
}

static void CommandThread( vlc_object_t *p_this )
{
    vod_t *p_vod = (vod_t*)p_this;
    vod_sys_t *p_sys = p_vod->p_sys;

    while( !p_vod->b_die )
    {
        block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
        rtsp_cmd_t cmd;
        vod_media_t *p_media = NULL;
        int i;

        if( !p_block_cmd )
            break;

        memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
        block_Release( p_block_cmd );

        if( cmd.i_type == RTSP_CMD_TYPE_NONE )
            break;

        /* */
        vlc_mutex_lock( &p_sys->lock_media );
        for( i = 0; i < p_sys->i_media; i++ )
        {
            if( p_sys->media[i]->id == cmd.i_media_id )
                break;
        }
        if( i >= p_sys->i_media )
            goto next;
        p_media = p_sys->media[i];

        switch( cmd.i_type )
        {
        case RTSP_CMD_TYPE_PLAY:
            vod_MediaControl( p_vod, p_media, cmd.psz_session,
                              VOD_MEDIA_PLAY, cmd.psz_arg );
            break;
        case RTSP_CMD_TYPE_PAUSE:
            vod_MediaControl( p_vod, p_media, cmd.psz_session,
                              VOD_MEDIA_PAUSE );
            break;

        case RTSP_CMD_TYPE_STOP:
            vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
            break;

        case RTSP_CMD_TYPE_SEEK:
            vod_MediaControl( p_vod, p_media, cmd.psz_session,
                              VOD_MEDIA_SEEK, cmd.f_arg );
            break;

        case RTSP_CMD_TYPE_REWIND:
            vod_MediaControl( p_vod, p_media, cmd.psz_session,
                              VOD_MEDIA_REWIND, cmd.f_arg );
            break;

        case RTSP_CMD_TYPE_FORWARD:
            vod_MediaControl( p_vod, p_media, cmd.psz_session,
                              VOD_MEDIA_FORWARD, cmd.f_arg );
            break;

        default:
            break;
        }

    next:
        vlc_mutex_unlock( &p_sys->lock_media );
        if( cmd.psz_session )
            free( cmd.psz_session );
        if( cmd.psz_arg )
            free( cmd.psz_arg );
    }
}

844 845 846 847 848
/****************************************************************************
 * RTSP server implementation
 ****************************************************************************/
static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
{
849
    rtsp_client_t *p_rtsp = malloc( sizeof(rtsp_client_t) );
850 851

    if( !p_rtsp ) return NULL;
852 853
    memset( p_rtsp, 0, sizeof(rtsp_client_t) );
    p_rtsp->es = 0;
854

855 856
    p_rtsp->psz_session = psz_session;
    TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
857

858 859
    p_media->p_vod->p_sys->i_connections++;
    msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
860
             psz_session, p_media->p_vod->p_sys->i_throttle_users );
861

862
    return p_rtsp;
863 864
}

865
static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
866 867 868
{
    int i;

869
    for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
870 871 872 873 874 875 876 877
    {
        if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
            return p_media->rtsp[i];
    }

    return NULL;
}

878
static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
879
{
880 881
    p_media->p_vod->p_sys->i_connections--;
    msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
882
             p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
883

884 885
    while( p_rtsp->i_es-- )
    {
886 887 888 889
        if( p_rtsp->es[p_rtsp->i_es]->psz_ip )
            free( p_rtsp->es[p_rtsp->i_es]->psz_ip );
        free( p_rtsp->es[p_rtsp->i_es] );
        if( !p_rtsp->i_es ) free( p_rtsp->es );
890 891
    }

892
    TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
893

894 895
    free( p_rtsp->psz_session );
    free( p_rtsp );
896 897 898
}

static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
899
                         httpd_message_t *answer, const httpd_message_t *query )
900 901 902
{
    vod_media_t *p_media = (vod_media_t*)p_args;
    vod_t *p_vod = p_media->p_vod;
903 904 905 906
    const char *psz_transport = NULL;
    const char *psz_playnow = NULL; /* support option: x-playNow */
    const char *psz_session = NULL;
    const char *psz_cseq = NULL;
907
    rtsp_client_t *p_rtsp;
908
    int i_port = 0;
909
    int i_cseq = 0;
910 911 912

    if( answer == NULL || query == NULL ) return VLC_SUCCESS;

913
    msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
914 915 916 917

    answer->i_proto   = HTTPD_PROTO_RTSP;
    answer->i_version = query->i_version;
    answer->i_type    = HTTPD_MSG_ANSWER;
918
    answer->i_body    = 0;
919
    answer->p_body    = NULL;
920 921 922

    switch( query->i_type )
    {
923 924
        case HTTPD_MSG_SETUP:
        {
925
            psz_playnow = httpd_MsgGet( query, "x-playNow" );
926 927 928 929 930 931
            psz_transport = httpd_MsgGet( query, "Transport" );
            msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );

            if( strstr( psz_transport, "unicast" ) &&
                strstr( psz_transport, "client_port=" ) )
            {
932
                rtsp_client_t *p_rtsp = NULL;
933
                char ip[NI_MAXNUMERICHOST];
934
                i_port = atoi( strstr( psz_transport, "client_port=" ) +
935 936
                                strlen("client_port=") );

937 938 939
                if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
                    strstr( psz_transport, "RAW/RAW/UDP" ) )
                {
940 941 942
                    if( p_media->psz_mux ) free( p_media->psz_mux );
                    p_media->psz_mux = NULL;
                    p_media->psz_mux = strdup( p_vod->p_sys->psz_raw_mux );
943
                    p_media->b_raw = VLC_TRUE;
944
                }
945

946 947 948 949 950 951 952 953 954
                if( httpd_ClientIP( cl, ip ) == NULL )
                {
                    answer->i_status = 500;
                    answer->i_body = 0;
                    answer->p_body = NULL;
                    break;
                }

                msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
955
                         ip, i_port );
956 957 958 959

                psz_session = httpd_MsgGet( query, "Session" );
                if( !psz_session || !*psz_session )
                {
960
                    char *psz_new;
961 962
                    if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
                        ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
963
                    {
964
                        answer->i_status = 503;
965 966 967 968
                        answer->i_body = 0;
                        answer->p_body = NULL;
                        break;
                    }
969 970 971 972
                    asprintf( &psz_new, "%d", rand() );
                    psz_session = psz_new;

                    p_rtsp = RtspClientNew( p_media, psz_new );
973 974 975 976 977 978 979
                    if( !p_rtsp )
                    {
                        answer->i_status = 454;
                        answer->i_body = 0;
                        answer->p_body = NULL;
                        break;
                    }
980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996
                }
                else
                {
                    p_rtsp = RtspClientGet( p_media, psz_session );
                    if( !p_rtsp )
                    {
                        answer->i_status = 454;
                        answer->i_body = 0;
                        answer->p_body = NULL;
                        break;
                    }
                }

                answer->i_status = 200;
                answer->i_body = 0;
                answer->p_body = NULL;

997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012
                if( p_media->b_raw )
                {
                    if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
                    {
                        httpd_MsgAdd( answer, "Transport", "MP2T/H2221/UDP;client_port=%d-%d",
                                      i_port, i_port + 1 );
                    }
                    else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
                    {
                        httpd_MsgAdd( answer, "Transport", "RAW/RAW/UDP;client_port=%d-%d",
                                      i_port, i_port + 1 );
                    }
                }
                else
                    httpd_MsgAdd( answer, "Transport", "RTP/AVP/UDP;client_port=%d-%d",
                                  i_port, i_port + 1 );
1013 1014 1015 1016 1017 1018 1019
            }
            else /* TODO  strstr( psz_transport, "interleaved" ) ) */
            {
                answer->i_status = 461;
                answer->i_body = 0;
                answer->p_body = NULL;
            }
1020

1021 1022
            /* Intentional fall-through on x-playNow option in RTSP request */
            if( !psz_playnow )
1023
                break;
1024 1025 1026 1027
        }

        case HTTPD_MSG_PLAY:
        {
1028
            char *psz_output, ip[NI_MAXNUMERICHOST];
1029
            int i, i_port_audio = 0, i_port_video = 0;
1030 1031

            /* for now only multicast so easy */
1032 1033 1034 1035 1036 1037
            if( !psz_playnow )
            {
                answer->i_status = 200;
                answer->i_body = 0;
                answer->p_body = NULL;
            }
1038

1039 1040
            if( !psz_session )
                psz_session = httpd_MsgGet( query, "Session" );
1041 1042
            msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );

1043
            p_rtsp = RtspClientGet( p_media, psz_session );
1044 1045 1046 1047 1048 1049 1050
            if( !p_rtsp )
            {
                answer->i_status = 500;
                answer->i_body = 0;
                answer->p_body = NULL;
                break;
            }
1051

1052 1053
            if( p_rtsp->b_playing )
            {
1054 1055
                const char *psz_position = httpd_MsgGet( query, "Range" );
                const char *psz_scale = httpd_MsgGet( query, "Scale" );
1056
                if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1057
                if( psz_position && !psz_scale )
1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068
                {
                    double f_pos;
                    char *end;

                    msg_Dbg( p_vod, "seeking request: %s", psz_position );
                    psz_position += 4;
                    /* FIXME: npt= is not necessarily formatted as a float */
                    f_pos = us_strtod( psz_position, &end );
                    if( end > psz_position )
                    {
                        f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1069
                        CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media, psz_session, f_pos, NULL );
1070 1071 1072
                    }
                    break;
                }
1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084
                if( psz_scale )
                {
                    double f_scale = 0.0;
                    char *end;

                    f_scale = us_strtod( psz_scale, &end );
                    if( end > psz_scale )
                    {
                        f_scale = (f_scale * 30.0);
                        if( psz_scale[0] == '-' ) /* rewind */
                        {
                            msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1085
                            CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media, psz_session, f_scale, NULL );
1086 1087 1088 1089
                        }
                        else if(psz_scale[0] != '1' ) /* fast-forward */
                        {
                            msg_Dbg( p_vod, "fastforward request: %s", psz_scale );
1090
                            CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media, psz_session, f_scale, NULL );
1091 1092 1093 1094 1095
                        }

                        if( p_rtsp->b_paused == VLC_TRUE )
                        {
                            p_rtsp->b_paused = VLC_FALSE;
1096
                            CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session, 0, NULL );
1097 1098 1099 1100
                        }
                    }
                    break;
                }
1101 1102
            }

1103 1104
            if( p_rtsp->b_playing && p_rtsp->b_paused )
            {
1105
                CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session, 0, NULL );
1106 1107 1108 1109 1110
                p_rtsp->b_paused = VLC_FALSE;
                break;
            }
            else if( p_rtsp->b_playing ) break;

1111
            if( httpd_ClientIP( cl, ip ) == NULL ) break;
1112

1113
            p_rtsp->b_playing = VLC_TRUE;
1114 1115

            /* FIXME for != 1 video and 1 audio */
1116
            for( i = 0; i < p_rtsp->i_es; i++ )
1117
            {
1118 1119 1120 1121
                if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
                    i_port_audio = p_rtsp->es[i]->i_port;
                if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
                    i_port_video = p_rtsp->es[i]->i_port;
1122
            }
1123

1124 1125
            if( p_media->psz_mux )
            {
1126 1127 1128 1129 1130 1131 1132 1133 1134 1135
                if( p_media->b_raw )
                {
                    asprintf( &psz_output, "std{access=udp,dst=%s:%i,mux=%s}",
                              ip, i_port, p_media->psz_mux );
                }
                else
                {
                    asprintf( &psz_output, "rtp{dst=%s,port=%i,mux=%s}",
                              ip, i_port_video, p_media->psz_mux );
                }
1136 1137 1138 1139 1140 1141 1142
            }
            else
            {
                asprintf( &psz_output, "rtp{dst=%s,port-video=%i,"
                          "port-audio=%i}", ip, i_port_video, i_port_audio );
            }

1143
            CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session, 0, psz_output );
1144
            free( psz_output );
1145 1146 1147
            break;
        }

1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169
        case HTTPD_MSG_DESCRIBE:
        {
            char *psz_sdp =
                SDPGenerate( p_media, cl );

            if( psz_sdp != NULL )
            {
                answer->i_status = 200;
                httpd_MsgAdd( answer, "Content-type",  "%s", "application/sdp" );

                answer->p_body = (uint8_t *)psz_sdp;
                answer->i_body = strlen( psz_sdp );
            }
            else
            {
                answer->i_status = 500;
                answer->p_body = NULL;
                answer->i_body = 0;
            }
            break;
        }

1170 1171 1172
        case HTTPD_MSG_PAUSE:
            psz_session = httpd_MsgGet( query, "Session" );
            msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1173

1174 1175 1176
            p_rtsp = RtspClientGet( p_media, psz_session );
            if( !p_rtsp ) break;

1177
            CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session, 0, NULL );
1178
            p_rtsp->b_paused = VLC_TRUE;
1179 1180 1181 1182 1183

            answer->i_status = 200;
            answer->i_body = 0;
            answer->p_body = NULL;
            break;
1184 1185 1186 1187 1188 1189 1190 1191 1192 1193

        case HTTPD_MSG_TEARDOWN:
            /* for now only multicast so easy again */
            answer->i_status = 200;
            answer->i_body = 0;
            answer->p_body = NULL;

            psz_session = httpd_MsgGet( query, "Session" );
            msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);

1194 1195
            p_rtsp = RtspClientGet( p_media, psz_session );
            if( !p_rtsp ) break;
1196

1197
            CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session, 0, NULL );
1198
            RtspClientDel( p_media, p_rtsp );
1199 1200
            break;

1201 1202 1203 1204 1205 1206
        case HTTPD_MSG_GETPARAMETER:
            answer->i_status = 200;
            answer->i_body = 0;
            answer->p_body = NULL;
            break;

1207 1208 1209 1210 1211 1212
        default:
            return VLC_EGENERIC;
    }

    httpd_MsgAdd( answer, "Server", "VLC Server" );
    httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1213 1214
    psz_cseq = httpd_MsgGet( query, "Cseq" );
    psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1215
    httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1216 1217 1218 1219
    httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );

    if( psz_session )
    {
1220 1221 1222 1223 1224 1225
         if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
             httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
               p_media->p_vod->p_sys->i_session_timeout );
         else
              httpd_MsgAdd( answer, "Session", "%s", psz_session );
    } 
1226 1227 1228 1229

    return VLC_SUCCESS;
}

1230
static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1231
                           httpd_message_t *answer, const httpd_message_t *query )
1232
{
1233 1234
    media_es_t *p_es = (media_es_t*)p_args;
    vod_media_t *p_media = p_es->p_media;
1235
    vod_t *p_vod = p_media->p_vod;
1236
    rtsp_client_t *p_rtsp = NULL;
1237 1238 1239 1240 1241
    const char *psz_transport = NULL;
    const char *psz_playnow = NULL; /* support option: x-playNow */
    const char *psz_session = NULL;
    const char *psz_position = NULL;
    const char *psz_cseq = NULL;
1242
    int i_cseq = 0;
1243
    int i;
1244 1245 1246

    if( answer == NULL || query == NULL ) return VLC_SUCCESS;

1247
    msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1248 1249 1250 1251

    answer->i_proto   = HTTPD_PROTO_RTSP;
    answer->i_version = query->i_version;
    answer->i_type    = HTTPD_MSG_ANSWER;
1252 1253
    answer->i_body    = 0;
    answer->p_body      = NULL;
1254 1255 1256

    switch( query->i_type )
    {
1257 1258 1259
        case HTTPD_MSG_SETUP:
            psz_playnow = httpd_MsgGet( query, "x-playNow" );
            psz_transport = httpd_MsgGet( query, "Transport" );
1260

1261
            msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1262

1263 1264
            if( strstr( psz_transport, "unicast" ) &&
                strstr( psz_transport, "client_port=" ) )
1265
            {
1266 1267
                rtsp_client_t *p_rtsp = NULL;
                rtsp_client_es_t *p_rtsp_es = NULL;
1268 1269 1270
                char ip[NI_MAXNUMERICHOST];
                int i_port = atoi( strstr( psz_transport, "client_port=" ) +
                                strlen("client_port=") );
1271

1272
                if( httpd_ClientIP( cl, ip ) == NULL )
1273
                {
1274
                    answer->i_status = 500;
1275 1276 1277 1278 1279
                    answer->i_body = 0;
                    answer->p_body = NULL;
                    break;
                }

1280 1281
                msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
                        ip, i_port );
1282

1283 1284 1285
                psz_session = httpd_MsgGet( query, "Session" );
                if( !psz_session || !*psz_session )
                {
1286
                    char *psz_new;
1287 1288
                    if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
                        ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1289
                    {
1290
                        answer->i_status = 503;
1291 1292 1293 1294
                        answer->i_body = 0;
                        answer->p_body = NULL;
                        break;
                    }
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