I tried to run the call application provided in Libjingle but could not succeed While making a call to a roster member it sends an invitation to other side but then I encounter following error:

=== DNS RESOLUTION (relay1.l.google.com) === relay1.l.google.com resolved to 72.14.253.126 ReuseSocketPool - Creating new socket ReuseSocketPool - Opening connection to: relay1.l.google.com:80 Error(httpbase.cc:373): flush_data: error Error(httpbase.cc:532): OnEvent: SE_CLOSE error: 111 AsyncHttpRequest request error: 4 Warning(httpportallocator.cc:139): HTTPPortAllocator: request received error 500 HTTPPortAllocator: sending to host relay2.l.google.com === DNS RESOLUTION (relay2.l.google.com) === relay2.l.google.com resolved to 209.85.137.126 ReuseSocketPool - Creating new socket ReuseSocketPool - Opening connection to: relay2.l.google.com:80 Error(httpbase.cc:373): flush_data: error Error(httpbase.cc:532): OnEvent: SE_CLOSE error: 111 AsyncHttpRequest request error: 4 Warning(httpportallocator.cc:139): HTTPPortAllocator: request received error 500 Warning(httpportallocator.cc:108): HttpPortAllocator: maximum number of requests reached RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Sep 13 18:23:12 2007 <iq to="unik...@gmail.com/callCEF6F57A" type="set" id="172" from="keda...@gmail.com/Talk.v104F8C3F551"> <session type="terminate" id="3972699105" initiator="keda...@gmail.com/Talk.v104F8C3F551"
xmlns="http://www.google.com/session"/> </iq> (call) other side hung up SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Sep 13 18:23:12 2007 <iq to="keda...@gmail.com/Talk.v104F8C3F551" id="172" type="result"/> Destroyed voice channel

I think that there is some problem in the DNS resolution which i am not able to make out. At both the sides it is showing " other side hung up " , but both the sides are working properly. kindly reply if you have any solutions...