[Building Sakai] 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://192.168.122.14 to 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 guest 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
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