WSO2IS IDP Proxy unable to obtain access token for mobile app - mobile

Question

I have been testing WSO2 Identity Server IDP Proxy for android(http://wso2.com/library/articles/2014/07/sso-for-native-mobile-applications-with-wso2-identity-server/). I manage to setup the IDP Proxy App and test without problem. However, when I did setup the sample app given (azone and eBuy), I have encounter some error which I couldn't understand why the token is returning NULL whenever I login to those sample apps. Below are the error log:
09-10 11:04:55.020: D/dalvikvm(19024): GC_FOR_ALLOC freed 83K, 12%
free 9589K/10856K, paused 22ms, total 22ms 09-10 11:04:55.020:
I/dalvikvm-heap(19024): Grow heap (frag case) to 11.990MB for
1544896-byte allocation 09-10 11:04:55.045: D/dalvikvm(19024):
GC_FOR_ALLOC freed <1K, 11% free 11098K/12368K, paused 23ms, total
23ms 09-10 11:04:55.195: D/dalvikvm(19024): GC_FOR_ALLOC freed 2K, 10%
free 12516K/13788K, paused 15ms, total 15ms 09-10 11:04:55.310:
D/libEGL(19024): loaded /system/lib/egl/libEGL_mali.so 09-10
11:04:55.315: D/libEGL(19024): loaded
/system/lib/egl/libGLESv1_CM_mali.so 09-10 11:04:55.320:
D/libEGL(19024): loaded /system/lib/egl/libGLESv2_mali.so 09-10
11:04:55.325: E/(19024): Device driver API match 09-10 11:04:55.325:
E/(19024): Device driver API version: 23 09-10 11:04:55.325:
E/(19024): User space API version: 23 09-10 11:04:55.325: E/(19024):
mali: REVISION=Linux-r3p2-01rel3 BUILD_DATE=Wed Oct 9 21:05:57 KST
2013 09-10 11:04:55.395: D/OpenGLRenderer(19024): Enabling debug mode
0 09-10 11:05:09.585: D/IdentityProxyActivity(19024): starting IDP
Proxy App 09-10 11:05:10.220: W/IInputConnectionWrapper(19024):
showStatusIcon on inactive InputConnection 09-10 11:05:21.770:
D/IdentityProxyActivity(19024): starting IdentityProxyActivity
onActivityResult 09-10 11:05:21.775: D/AccessTokenHandler(19024):
d3b276fc3665350818f18f521f7ae4 09-10 11:05:21.790:
D/ServerUtilities(19024): Posting '{grant_type=authorization_code,
redirect_uri=http://wso2.com, scope=openid,
code=d3b276fc3665350818f18f521f7ae4}' to
https://172.18.64.178:9443/oauth2/token 09-10 11:05:21.795:
D/ServerUtilities(19024): Posting
'grant_type=authorization_code&redirect_uri=http://wso2.com&scope=openid&code=d3b276fc3665350818f18f521f7ae4' to https://172.18.64.178:9443/oauth2/token 09-10 11:05:22.150:
D/AccessTokenHandler(19024): {"error":"Internal Server
Error","error_description":"Internal Server Error"} 09-10
11:05:22.150: D/AccessTokenHandler(19024): Internal Server Error 09-10
11:05:22.150: D/AccessTokenHandler(19024): Internal Server Error 09-10
11:05:22.150: D/AndroidRuntime(19024): Shutting down VM 09-10
11:05:22.150: W/dalvikvm(19024): threadid=1: thread exiting with
uncaught exception (group=0x41c38700) 09-10 11:05:22.155:
E/AndroidRuntime(19024): FATAL EXCEPTION: main 09-10 11:05:22.155:
E/AndroidRuntime(19024): java.lang.NullPointerException 09-10
11:05:22.155: E/AndroidRuntime(19024): at
org.wso2.mobile.idp.proxy.IdentityProxy.receiveAccessToken(IdentityProxy.java:60)
09-10 11:05:22.155: E/AndroidRuntime(19024): at
org.wso2.mobile.idp.proxy.handlers.AccessTokenHandler$NetworkCallTask.onPostExecute(AccessTokenHandler.java:132)
09-10 11:05:22.155: E/AndroidRuntime(19024): at
org.wso2.mobile.idp.proxy.handlers.AccessTokenHandler$NetworkCallTask.onPostExecute(AccessTokenHandler.java:65)
09-10 11:05:22.155: E/AndroidRuntime(19024): at
android.os.AsyncTask.finish(AsyncTask.java:631) 09-10 11:05:22.155:
E/AndroidRuntime(19024): at
android.os.AsyncTask.access$600(AsyncTask.java:177) 09-10
11:05:22.155: E/AndroidRuntime(19024): at
android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
09-10 11:05:22.155: E/AndroidRuntime(19024): at
android.os.Handler.dispatchMessage(Handler.java:99) 09-10
11:05:22.155: E/AndroidRuntime(19024): at
android.os.Looper.loop(Looper.java:176) 09-10 11:05:22.155:
E/AndroidRuntime(19024): at
android.app.ActivityThread.main(ActivityThread.java:5419) 09-10
11:05:22.155: E/AndroidRuntime(19024): at
java.lang.reflect.Method.invokeNative(Native Method) 09-10
11:05:22.155: E/AndroidRuntime(19024): at
java.lang.reflect.Method.invoke(Method.java:525) 09-10 11:05:22.155:
E/AndroidRuntime(19024): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
09-10 11:05:22.155: E/AndroidRuntime(19024): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862) 09-10
11:05:22.155: E/AndroidRuntime(19024): at
dalvik.system.NativeStart.main(Native Method)
Also, when testing the sdample app(eBuy), aside the above error show in Logcat, there is no error shows in the Identity Server wso2carbon.log.

Answer 1

Gayan, I have finally solve the mystery of this issue. when I curl the way you mentioned, I notice a different type of error. It was show "error":"invalid_request","error_description":"Missing parameters: redirect_uri". After doing some checking on the OauthConstants.java between the proxy app and the sample apps (azone & eBuy). I notice that there is some error in code for the sample apps given. One of the variable was declared as REDIRECT_URL instead of CALL_BACK_URL in OauthConstants.java for the sample apps. Once I change to CALL_BACK_URL as required by the SDK. Everything works.

Answer 2

Did you put correct values for client id ,secret in OauthCostants.java
While analyzing your logs I have seen that you have successfully completed first step in the authorization code grant type and second step (token request) was failed due to some reason.
Could you see any exception logged in Identity Server back end ?
Any connectivity issue to https://172.18.64.178:9443/oauth2/token ?
Try with http://172.18.64.178:9763/oauth2/token ?