Re: [GnomeMeeting-list] Help troubleshooting Gnomemeeting

[Erik Reuter <ereuter erikreuter net>]

On Thu, Jan 10, 2002 at 09:35:57AM +0100, Damien Sandras wrote:

> le jeu 10-01-2002 ? 03:49, Erik Reuter a ?crit :
>
> > I'm running GnomeMeeting 0.12.2, Linux kernel 2.4.17, ALSA          
> > sound module, and a WinTV model 401 video capture card with a       
> > BT878 chip. My computer is connected to a D-Link DI-713P cable      
> > router/firewall which is connected to a cable modem (Optimum Online 
> > ISP) but my Linux box is on the "DMZ" IP of the D-Link, meaning     
> > that the firewall is supposed to pass all the packets on to my      
> > Linux box (no filtering, theoretically).                            
> >
> > I am trying to make an audio/video connection with Andy. We can     
> > make a connection (either one of us can call the other), and my     
> > computer can send video and audio which Andy is able to receive     
> > (i.e., Andy can see and hear me). But I receive neither video nor   
> > audio from Andy. Andy is also running Gnomemeeting 0.12.2 and ALSA, 
> > has video transmission enabled, and Andy's Gnomemeeting can read    
> > the camera and display it locally. Also, Andy is able to record and 
> > playback sound with sox, but I cannot receive any sound from Andy   
> > when we are connected with Gnomemeeting (i.e., I cannot see or hear 
> > Andy).                                                              
>
>
> Perhaps that Andy has a broken configuration for Audio. However, for
> video, it should work.

I'm not sure why you say this. If Andy can record and playback sound
with sox, then Andy's sound config is working, isn't it?

> Well, GnomeMeeting uses the port that are in the FAQ. You should try
> to enable H.245 Tunneling and Andy too. It will remove a port.  If you
> enable H.245 Tunneling, GnomeMeeting should only use 1720 and some
> random UDP ports for audio and video. There are no other ports.

Okay, we enabled H.245 tunneling, but I still can neither see nor hear
Andy. I see a connection (using netstat) on port 1720, but nothing on
any other ports. Andy can see and hear me with no difficulty.

> Yes, please go on the IRC channel, #gnomemeeting, server irc.gnome.org
> I'm not present, but there are several people there that could help
> you.

I just tried that channel. There was only one person responding, acetyl
(acetyl has a microphone, but no camera). I connected with acetyl
using Gnomemeeting and acetyl could see and hear me, but I could not
hear acetyl (obviously I could not see acetyl due to acetyl having no
camera).

It appears the problem is with my computer configuration, or with the
packets not getting through to my computer. I ran a portscan with
nmap on my computer from Andy's computer, and got the results below
(Gnomemeeting was running on my computer during the port scan, but I was
not connected with anyone at the time).

I put the output of gnomemeeting --debug during my connection
with Andy onto my webserver (it is quite long). The URL is
http://erikreuter.net/gm.debug

I don't know how to troubleshoot this problem any further. Do you have
any suggestions?

***

 nmap -sT -v -P0 -oN port_scan_h -p 1-6000 erikreuter.com

 Starting nmap V. 2.54BETA22 ( www.insecure.org/nmap/ )
 Host ool-18be459a.dyn.optonline.net (24.190.69.154) appears to be up ... good.
 Initiating Connect() Scan against ool-18be459a.dyn.optonline.net (24.190.69.154)
 The Connect() Scan took 75 seconds to scan 6000 ports.
 Interesting ports on ool-18be459a.dyn.optonline.net (24.190.69.154):
 (The 5984 ports scanned but not shown below are in state: closed)
 Port       State       Service
 9/tcp      open        discard                 
 13/tcp     open        daytime                 
 21/tcp     open        ftp                     
 22/tcp     open        ssh                     
 23/tcp     open        telnet                  
 25/tcp     open        smtp                    
 37/tcp     open        time                    
 53/tcp     open        domain                  
 79/tcp     open        finger                  
 80/tcp     filtered    http                    
 111/tcp    open        sunrpc                  
 515/tcp    open        printer                 
 631/tcp    open        cups                    
 1024/tcp   open        kdm                     
 1214/tcp   filtered    unknown                 
 1720/tcp   open        unknown                

***

Here is my config file:



[VideoSettings]
video_size=0
video_format=1
transmitted_video_quality=5
transmitted_fps=30
received_video_quality=3
transmitted_update_blocks=2
video_transmission=1
tr_fps=15
fps=0
vb=0
video_bandwidth=0

[UserSettings]
firstname=Erik
surname=Reuter
mail=ereuter erikreuter net
comment=need to test my videoconferncing setup
location=New Jersey
listen_port=1720
notfirst=1
version=122

[GeneralSettings]
show_splash=1
show_notebook=1
show_statusbar=1
incoming_call_sound=1
show_docklet=1
enable_popup=1
show_quickbar=1
dnd=0
enable_auto_answer=0
video_preview=1

[AdvancedSettings]
enable_fast_start=1
enable_h245_tunneling=1
enable_auto_answer=1
max_bps=20000
silence_detection=1
dnd=0
gsm_silence_detection=1
g711_silence_detection=1
jitter_buffer=50
gsm_frames=4
g711_frames=30

[LDAPSettings]
ldap=1
ldap_server=argo.dyndns.org
ldap_port=389
ldap_servers_list=ils.advalvas.be:ils.netmeetinghq.com:argo.dyndns.org:

[EnabledAudio]
LPC10=0
GSM-06.10=0
G.711-uLaw-64k=1
G.711-ALaw-64k=1
MS-GSM=1

[Devices]
audio_player=/dev/dsp
audio_recorder=/dev/dsp
audio_player_mixer=/dev/mixer
audio_recorder_mixer=/dev/mixer
video_device=/dev/video0
video_channel=2

[Placement]
Dock=Toolbar\\3,0,0,28\\Menubar\\0,0,0,0

[GKSettings]
gk=0
gk_host=
gk_id=

***


-- 
"Erik Reuter" <ereuter erikreuter net>       http://www.erikreuter.com/