flex4.9.1 air23 show anr

I was using rtmfp to build a p2p voice stream between cellphones, but after running for a while anr showed up. I dumped the traces.txt and it showed like this:

"main" prio=5 tid=1 NATIVE

  | group="main" sCount=1 dsCount=0 obj=0x40e1ab50 self=0x40e0a168

  | sysTid=11736 nice=0 sched=0/0 cgrp=apps handle=1074464476

  | state=S schedstat=( 266005332894 156510492216 1253060 ) utm=21775 stm=4825 core=1

  #00  pc 000181e4  /system/lib/libc.so (__futex_syscall3+8)

  #01  pc 0000d71c  /system/lib/libc.so

  #02  pc 0013d5f1  /data/app-lib/[appname]/libCore.so

  #03  pc 0012a26b  /data/app-lib/[appname]/libCore.so

  #04  pc 001b9c0d  /data/app-lib/[appname]/libCore.so

  #05  pc 0033e00f  /data/app-lib/[appname]/libCore.so

  #06  pc 00164dd9  /data/app-lib/[appname]/libCore.so

  at com.adobe.air.customHandler.callTimeoutFunction(Native Method)

  at com.adobe.air.customHandler.handleMessage(customHandler.java:22)

  at android.os.Handler.dispatchMessage(Handler.java:99)

  at android.os.Looper.loop(Looper.java:213)

  at android.app.ActivityThread.main(ActivityThread.java:5153)

  at java.lang.reflect.Method.invokeNative(Native Method)

  at java.lang.reflect.Method.invoke(Method.java:511)

  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:797)

  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:564)

  at dalvik.system.NativeStart.main(Native Method)

Would someone tell me how to solve this?Thanks in advance!