turn work not well,only one side can receive video and audio streams

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What steps will reproduce the problem?
1.two imsdorid clients.one client(1001) behind syemetric NAT,the other(1002) 
not.
  1001 call 1002,ice beigin to work,connect check success,turn server 
begin to work.
  1001 send turn message package from it's reflect port to the turn server stun port(3478).
  turn server extract udp package from the turn message package,then
send udp package from it's relay port to the 1002 client.
  1002 send udp package from it's reflect port to the turn server stun
port(3478).
  turn server does't send any package to the 1001 client.
2.so 1001 client can't receive video and audio streams,but 1002 client
can.
3.

What is the expected output? What do you see instead?
both clients must receive video and audio streams,but only side can.

What version of the product are you using? On what operating system?
r1128

Please provide any additional information below.

Original issue reported on code.google.com by [email protected] on 2 Mar 2015 at 11:16