BBB server responded with HTTP status code 504

[quang trinh]

Hi every body, i have a problem when configure sakai use bigbluebutton, can you help me?

+I used a vitrual machine (CentOs 6.2, use NAT network,ip 192.168.122.11) to install sakai 2.7.1, sakai run well,

+I used another virtual machine (Ubuntu 10.04.4, use NAT network, ip 192.168.122.14) to install bigbluebutton (version 0.8),i use command bbb-conf --check, it fine, no error

+In sakai machine, i tested bigbluebutton by command: wget -O - --quiet http://192.168.122.14/bigbluebutton/api, it works fine with result "<response><returncode>SUCCESS</returncode><version>0.8</version></response>", and in firefox browser i use url http://192.168.122.14to use bigbluebutton demo or use url http://192.168.122.14/bigbluebutton/api, both work fine

But i found out that: if i unplug network cable, sakai can use bigbluebutton well.
When I plug network cable, sakai can not use bigbluebutton, meeting tool display list meetings but can't use, and file catalina.out has error "BBB server responded with HTTP status code 504".I restart tomcat but unsuccess, catalina.out display error "IndexOutOfBoundsException:Index:0, Size :0".Sakai could not connect bigbluebutton although bbb server is running

If I unplug net cable, i work fine.

If bigbluebutton machine use Bridge network, above problem is solved.But i want to use NAT network for virtual machine

I guess this problem due to network proxy(my host machine use network proxy), but even i set no_proxy for both virtual machine(sakai vm and bigbluebutton vm) by command "export no_proxy=...." it does not work with NAT network

Can help me?

Thanks