[AG-TECH] TCP to UDP bridges.....

Joseph Stone stone004 at umn.edu
Fri Nov 3 05:12:43 CST 2006

I see now that AG Connector does use only one port (probably needs to  
be opened in many cases) but uses UDP - doesn't solve this problem.
Would something like UDPoTCP work?  http://gogo.bluedynamics.net/ 


On Nov 3, 2006, at 4:47 AM, Joseph Stone wrote:

> Where does AGConnector fit into (compare to) this?  I've seen this  
> work for a number of sites, but not all.
> http://ace.netmedia.gist.ac.kr/AG_Connector/
> Joe
> On Nov 3, 2006, at 3:26 AM, Andrew A Rowley wrote:
>> Hi,
>> In general, bridges use UDP as the AG traffic uses UDP.  The AG  
>> toolkit uses vic and rat, which only communicate using UDP.  I  
>> have a couple of solutions that help with this:
>> StaticBridge uses the same set of port numbers (4 for AG audio and  
>> video e.g. 2 per channel), regardless of the venue or the number  
>> of users.  This means that users need to open less UDP ports in  
>> general in their firewall.  This appears to work fine, although we  
>> have not had heavy usage yet, and we can't yet use this with the  
>> AG3 server due to differences in the way the Static and Quick  
>> bridges work (I have submitted updates but have no idea of the  
>> status of these, and if they will be in the next release).
>> I have also been working on a TCP-based bridge.  This appears to  
>> work OK just now, but I haven't really had any time to test it  
>> properly yet.  If you are interested, I could see about packaging  
>> something up for you to try out.  This also doesn't work with  
>> AG2/3 yet, although this will probably work in a completely  
>> different way to both the Static and Quick bridges again, and will  
>> probably require an AG Toolkit service to make it work (which I  
>> have again not had time to get going).
>> Andrew :)

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