Please see below! ----- Original Message ----- From: "Christoph Willing" <will...@itee.uq.edu.au> To: "Michael Braitmaier" <braitma...@hlrs.de> Cc: "West Suhanic" <wsuha...@alumni.uwaterloo.ca>; "Thomas D. Uram" <tu...@mcs.anl.gov>; <ag-t...@mcs.anl.gov> Sent: Monday, November 15, 2004 1:54 PM Subject: Re: [AG-TECH] BridgeServer trouble
> > On 15/11/2004, at 7:36 PM, Michael Braitmaier wrote: > >> HEllo chris! >> >> I am using a quite small port range with our bridgeserver here at our >> institute, only allowing a port range of 4 ports, which is exactly what >> is needed to bridge one room. For example: >> >> #HLRS AG Room on ANL Server >> [https://hume.mcs.anl.gov:9000/Venues/ >> 000000f5569d3f0a008c00dd000b003761b] >> type=Venue >> portMin=50096 >> portMax=50099 >> >> Two ports are allocated for audio (in/out) and two ports are allocated >> for video (in/out). >> >> Works quite stable. > > Michael, > > Since you had success, I just tried mine again and it worked fine. > > I did do one thing differently and this seems to be significant. My > original port number range was portMin=24000, portMax 24004 ( they were > just commented out in the bridge.conf file). I changed them to 24000 & > 24003 and it worked perfectly. When I changed back to the original 24000 > & 24004, I had errors again,namely: > can't bind ucaddr to socket!: Address already in use That is related to something different. The port allocator code uses a random port allocation method. I changed the code of my AccessGrid installation, to have a repeatable intervall allocation of ports.This means everytime I start the bridge the ports will be allocated starting with <PortMin> and ending with <PortMax>. The normal AG distribution uses a random number generator to allocate the ports so it is possible that one uc-port might be used for different mc-ports, due to a bug (i guess) in the portallocator python script, which I also fixed to have a stable track of ports already used. Michael > > When I changed back to 24000 & 24003 and problem disappeared. So its > working now, but I think something is still not quite perfect in the port > allocation. > > So West, thats something else you could try: I see that your port range > was 24000-24006. What happens if you try portMin=24000 and portMax=24003? > > chris > > > Christoph Willing Ph: +61 7 3365 8350 > QPSF Access Grid Manager > University of Queensland >
